methionine has been researched along with vitamin b 12 in 736 studies
| Timeframe | Studies, this research(%) | All Research% |
|---|---|---|
| pre-1990 | 400 (54.35) | 18.7374 |
| 1990's | 87 (11.82) | 18.2507 |
| 2000's | 129 (17.53) | 29.6817 |
| 2010's | 86 (11.68) | 24.3611 |
| 2020's | 34 (4.62) | 2.80 |
| Authors | Studies |
|---|---|
| DiGirolamo, PM; Fujii, K; Huennekens, FM; Jacobsen, DW; Vitols, KS | 1 |
| Das, KC; Herbert, V | 2 |
| Poirier, LA | 2 |
| Barak, AJ; Sorrell, MF; Tuma, DJ | 1 |
| Jacobsen, SJ; Mangum, JH; North, JA; Rao, NA | 1 |
| Arigoni, D | 1 |
| Nunn, JF | 2 |
| Schrauzer, GN | 2 |
| Drivsholm, A; Hansen, OP; Hippe, E; Linnell, JC; Quadros, E | 1 |
| Batra, KK; Stokstad, EL; Watson, JE | 1 |
| Bukin, IuV; Krasnova, TP; Orlova, NV | 1 |
| Chrin, LR; Jaffe, JJ | 1 |
| Angeretti, A; Gaffodio, AM; Giunta, C; Martinetto, P; Pessione, E | 1 |
| Hemmings, BA; Poston, JM | 1 |
| Fukui, S; Sugimoto, Y | 1 |
| Cooper, BA | 1 |
| Günther, E; Herrmann, H; Wehnert, M | 1 |
| Kageyama, M; Perlman, D | 1 |
| Awasthi, YC; Morris, HH; Powell, GF; Schmalstieg, FC; Schochet, SS; Srivastava, SK | 1 |
| Chiao, F; Stokstad, EL | 1 |
| Shane, B; Stokstad, EL; Watson, JE | 1 |
| DiLello, D; Hutner, SH; Keller, DE; Loudis, MC; Shapiro, A | 1 |
| Hasegawa, A; Suketa, Y; Urakubo, G; Yamamoto, T | 1 |
| Abbakumov, SA; Makolkin, VI; Masliuk, VI; Nedostup, AV; Popova, TA | 1 |
| Abbakumov, SA; Masliuk, VI; Neporent, MI; Polosova, TA; Shatikhin, AI | 1 |
| Fukui, S; Sugimoto, Y; Toraya, T | 1 |
| Grzelakowska-Sztabert, B; Landman-Balińska, M | 1 |
| Grzelakowska-Sztabert, B | 1 |
| Mezey, E | 1 |
| Kafka, EC; Kalser, MH | 1 |
| Chang, GW; Chang, JT | 1 |
| Erbe, RE | 1 |
| Jaszewski, B; Skupin, J; Trojanowska, K | 2 |
| Corcino, JJ; Klipstein, FA | 1 |
| Finkelstein, JD; Freeman, JM; Mudd, SH | 1 |
| Schmid, S; Schuh, M; Stöcki, VW | 1 |
| Fukui, S; Tanaka, A; Toraya, T; Yongsmith, B | 1 |
| Beuhring, KU; Shin, YS; Stokstad, EL | 1 |
| Hanna, LM; Taylor, RT | 1 |
| Cheng, FW; Shane, B; Stokstad, EL | 1 |
| Blumenthal, B | 1 |
| Briggs, GM; Cohen, NL; Reyes, PS; Tseng, RY | 1 |
| Hieb, WF; Lu, NC; Stokstad, EL | 1 |
| Spray, GH; Williams, DL | 2 |
| Banerjee, RV; González, JC; Huang, S; Matthews, RG; Sumner, JS | 1 |
| Brass, EP | 1 |
| Stauffer, GV; Urbanowski, ML; Wu, WF | 1 |
| Di Rocco, A; Gould, RJ; Stacy, CB | 1 |
| Haraguchi, H | 1 |
| Andersson, A; Brattström, L; Hultberg, B; Israelsson, B; Olsson, A | 1 |
| Garovic-Kocic, V; Rosenblatt, DS | 1 |
| Poirier, LA; Wainfan, E | 1 |
| Andersson, A; Brattström, L; Hamfelt, A; Hultberg, B; Isaksson, A; Israelsson, B | 1 |
| Allen, RH; Brass, EP; Marcell, PD; Stabler, SP | 1 |
| Brot, N; Cai, XY; Jakubowski, H; Redfield, B; Weissbach, H; Zaleski, B | 1 |
| Baricault, L; Girr, M; Guéant, JL; Nexø, E; Nicolas, JP; Schohn, H; Zweibaum, A | 1 |
| Hipwell, SE; Liteplo, RG; Lue-Shing, H; Rosenblatt, DS; Sillaots, S | 1 |
| Dahms, N; Li, N; Seetharam, B; Seetharam, S | 1 |
| Alston, TA | 2 |
| Baker, E; Baker, H; DeAngelis, B; Frank, O | 1 |
| Brattström, L; Hultberg, B; Israelsson, B; Lagerstedt, C; Tengborn, L | 1 |
| Brot, N; Weissbach, H | 3 |
| Ramanujam, KS; Ramasamy, M; Seetharam, B; Seetharam, S | 1 |
| Abels, J; Ermens, AA; Guttormsen, AB; Lindemans, J; Refsum, H; Rupreht, J; Spijkers, LJ; Ueland, PM | 1 |
| Baumgartner, R; Bubl, R; Kühne, T | 1 |
| Maree, KA; Metz, J; van der Westhuyzen, J | 1 |
| Newberne, PM; Rogers, AE | 1 |
| Jaffe, EA; Quadros, EV; Rothenberg, SP | 1 |
| Arenson, E; Begley, JA; Chu, RC; Hall, CA; Lindenbaum, RH | 1 |
| Durán, N; Haun, M; Riveros, R | 1 |
| Stauffer, GV; Urbanowski, ML | 3 |
| Rosenblatt, DS; Watkins, D | 2 |
| Chanarin, I; Deacon, R; Lumb, M; Perry, J | 6 |
| Horne, DW | 1 |
| Boss, GR | 2 |
| Chanarin, I; Deacon, R; Lumb, M; Muir, M; Perry, J | 1 |
| Runciman, WB; Snoswell, AM; Xue, GP | 1 |
| Liteplo, RG | 1 |
| Fisler, JS; McKee, R; Sun, S; Swendseid, ME | 1 |
| Begley, JA; Chu, RC; Hall, CA | 2 |
| Brattström, LE; Hultberg, BL; Israelsson, B | 1 |
| Bester, AJ; Beyers, AD; Jaskiewicz, K; van Helden, PD | 1 |
| Berlow, S | 1 |
| Emmett, MR; Johnson, JR | 1 |
| Pristoupil, TI; Pristoupilová, K | 1 |
| Pesti, GM; Tillman, PB | 1 |
| Cooper, BA; Erbe, RW; Rosenblatt, DS; Thomas, IT; Watkins, D | 1 |
| Shane, B; Stokstad, EL | 2 |
| Amess, JA; Amos, RJ; Sourial, NA | 1 |
| Boyd, JN; Graham, ES; Graham, TC; Tennant, BC | 1 |
| Cheeke, PR; Lassen, ED; Pearson, EG; Schmitz, JA | 1 |
| Pagliaro, L | 1 |
| Poirier, LA; Whitehead, VM | 1 |
| Morris, HP; Petri, WA; Poirier, LA | 1 |
| Gawthorne, JM; Smith, RM | 1 |
| Reynolds, EH | 1 |
| Newberne, PM; Rogers, AE; Wogan, GN | 1 |
| Ahlstrom, A; Newberne, PM; Rogers, AE | 1 |
| Bradbeer, C; DiGirolamo, PM; Fu, ML; Preston, YA; White, JC | 1 |
| Chanarin, I; England, JM; Mollin, C; Perry, J | 1 |
| Fukui, S; Nakatani, K; Omori, H; Shimizu, S | 1 |
| Dadd, RH | 1 |
| Karlin, R | 3 |
| Ongari, R; Piva, M | 1 |
| Boselli, A | 1 |
| Bulgini, MJ; Tubaro, E | 1 |
| Beumer-Jochmans, MP; Godard, C | 1 |
| Foti, V; Piazza, E; Sindoni, G; Stornello, C | 1 |
| Berman, R; Simonson, E | 1 |
| Chavez, E; Kratzer, FH | 1 |
| Galloway, E; Kutzbach, C; Stokstad, EL | 1 |
| Daniel, LJ; Griffiths, JM | 1 |
| Galivan, J; Huennekens, FM | 1 |
| Hanna, ML; Taylor, RT | 5 |
| Ritari, SJ; Rosales, F; Sakami, W | 1 |
| Bradbeer, C; Di Girolamo, PM; Kadner, RJ | 1 |
| Chenouda, MS; Osman, HG | 1 |
| Mansouri, A; Silber, R | 1 |
| Gottlieb, LS; Hegsted, DM; Iseri, OA; Vitale, JJ | 1 |
| Naiki, N; Yamagata, S | 1 |
| Baker, CA; Brenchley, JE; Stauffer, GV | 1 |
| Gullberg, R | 1 |
| Stokstad, EL; Vidal, AJ | 1 |
| Inukai, S; Sato, K; Shimizu, S | 1 |
| Batra, KK; Buehring, KU; Stokstad, EL | 1 |
| Koreleski, J; Ryś, R | 1 |
| Cushley, RJ; Kajiwara, M; Okada, K; Scott, AI; Townsend, CA; Whitman, PJ | 1 |
| Erbe, RW; Kamely, D; Littlefield, JW | 1 |
| Clark, BR; Halpern, BC; Halpern, RM; Hardy, DN; Smith, RA | 1 |
| Decter, JB; Mansouri, A; Silber, R | 1 |
| Hanna, ML; Nevins, MP; Taylor, RT | 1 |
| Krause, B | 1 |
| Greene, RC; Kung, HF; Spears, C; Weissbach, H | 1 |
| German, A; Hubert-Brigeau, J | 2 |
| Flavin, M; Savin, MA; Slaughter, C | 1 |
| Hoffbrand, AV; Waters, AH | 1 |
| Smith, DA; Whitehouse, JM | 2 |
| Bradbeer, C; Di Masi, DR; Schnaitman, CA; White, JC | 1 |
| Kadner, RJ; Liggins, GL | 1 |
| Greene, RC; Kung, HF; Spears, C; Weissbach, H; Williams, RD | 1 |
| Whanger, PD | 1 |
| Jaenicke, L; Rüdiger, H | 2 |
| Smyth, DH | 1 |
| Rosenberg, LE | 1 |
| Karlin, R; Levrat, R | 1 |
| Foster, MA; Pattison, JR; Salem, AR | 1 |
| Gross, R; Jaenicke, L | 1 |
| Hakami, N; Sagerson, RN; Scott, CR; Teng, CC | 1 |
| Murphy, D; Wolford, JH | 1 |
| Birnbaum, J; Kaplan, L; White, RF | 1 |
| Stokstad, EL; Thenen, SW | 1 |
| Bannister, DW; Blair, R; Evans, AJ; Whitehead, CC | 1 |
| Bouveng, R | 1 |
| Ando, T; Fawcett, N; Julius, RL; Nyhan, WL; Rennert, OM | 1 |
| Howell, JN; Jaenicke, L; Sauer, H | 1 |
| Ellegaard, J; Esmann, V | 1 |
| Carson, NA; Ritchie, JW | 1 |
| Bertino, JR; Chello, PL | 1 |
| Brown, CE; Katz, JJ; Shemin, D | 1 |
| Iordan, EP; Vorob'eva, LI | 1 |
| Ordóñez, LA; Wurtman, RJ | 2 |
| Arakawa, T; Honda, Y; Narisawa, K | 1 |
| Griffith, M; Schexnailder, R | 1 |
| Giorgio, AJ; Linarelli, LG; Macdonald, RR; Rubin, HM | 1 |
| Kass, L | 1 |
| Dillon, MJ; England, JM; Gompertz, D; Goodey, PA; Grant, DB; Hussein, HA; Linnell, JC; Matthews, DM; Mudd, SH; Newns, GH; Seakins, JW; Uhlendorf, BW; Wise, IJ | 1 |
| Bryant, MP; Varel, VH | 1 |
| Looi, S; Renner, R | 1 |
| Looi, SH; Renner, R | 1 |
| Taylor, RT; Weissbach, H | 7 |
| Dickerman, H; Taylor, RT; Weissbach, H | 2 |
| Jaenicke, L; Stavrianopoulos, J | 1 |
| Taylor, RT; Weissbach, H; Whitfield, C | 1 |
| Kennedy, FS; Wolfe, RS; Wood, JM | 1 |
| Avadhani, NG; Mehta, BM; Rege, DV | 1 |
| Milner, L; Weissbach, H; Whitfield, C | 1 |
| Ljungdahl, LG | 1 |
| Taylor, RT | 1 |
| Bertino, JR; Nixon, PF | 1 |
| Corcino, JJ; Herbert, V; Waxman, S | 1 |
| Corcino, J; Herbert, V; Waxman, S | 1 |
| Simon, A | 1 |
| Jaenicke, L; Otaiza, E | 1 |
| Rüdiger, H | 1 |
| Fenrych, W; Huang, HH; Johnson, BC; Pawelkiewicz, J | 1 |
| Dawes, J; Foster, MA | 1 |
| Mankodi, BS; Rege, DV | 1 |
| Aronovitch, J; Grossowicz, N | 1 |
| Calhoun, DH; Feary, TW | 1 |
| Bridges, JM; Sloane, KM | 1 |
| Hegsted, DM; Vitale, JJ | 2 |
| Landureau, JC | 1 |
| Abbott, JM; Oace, SM | 1 |
| Finkelstein, JD; Freeman, JM; Mudd, SH; Shih, VE; Uhlendorf, BW | 1 |
| Gaull, GE | 1 |
| Barness, LA; Morrow, G | 1 |
| Fuller, HL; Keshavarz, K | 1 |
| Bannikova, ZD; Kol'ga, IV; Lapinskaia, VS; Rodnianskiĭ, LL | 1 |
| Fontaine, G | 1 |
| Curri, SB | 1 |
| Edelstein, S; Guggenheim, K | 2 |
| Foster, MA; Guest, JR; Tejerina, G; Woods, DD | 1 |
| Cauthen, SE; Foster, MA; Woods, DD | 1 |
| Dickerman, H; Weissbach, H | 1 |
| Brodie, JD; Huennekens, FM; Kerwar, SS; Mangum, JH; Scrimgeour, KG | 1 |
| Járai, M | 1 |
| Postgate, JR | 1 |
| Spatz, R | 1 |
| Hartje, J; Wilmanns, W | 1 |
| Mangum, JH; Murray, BK; North, JA | 1 |
| Wada, Y | 1 |
| Potchen, EJ; Studer, R | 1 |
| Allen, SH; Marston, HR | 1 |
| Abeles, RH; Dreyfus, PM; Levy, HL; Mudd, SH; Schulman, JD | 1 |
| Dumont, M; Karlin, R | 1 |
| Brodie, JD; Burke, GT; Mangum, JH | 1 |
| Fujii, K; Fukui, S | 1 |
| Hsia, YE; Lilljeqvist, AC; Rosenberg, LE | 1 |
| Levy, H; Morrow, G; Mudd, SH | 1 |
| Hinds, KR; Mudd, SH; Uhlendorf, BW | 1 |
| Goodman, SI; Hammond, KB; Moe, PG; Mudd, SH; Uhlendorf, BW | 1 |
| Shoji, M | 1 |
| Gawthorne, JM; Stokstad, EL | 1 |
| Kerwar, SS; McAuslan, B; Spears, C; Weissbach, H | 1 |
| Epshteĭn, IaA; Ustimova, MI | 1 |
| Matthews, DM | 1 |
| Jensen, LS; Latshaw, JD | 1 |
| Demain, AL; White, RF | 1 |
| Herbert, V; Kelly, A; Metz, J; Swett, VC; Waxman, S | 1 |
| Carey, MC; Fennelly, JJ; FitzGerald, O | 1 |
| Mangum, JH; North, JA | 1 |
| Oace, SM; Stokstad, EL; Tarczy-Hornoch, K | 1 |
| Durowoju, JE; McFarlane, H; Osuntokun, BO; Wilson, J | 1 |
| Daniels, HJ; Demain, AL; Schnable, L; White, RF | 1 |
| Potty, VH; Tamhane, DV | 1 |
| Chang, YO | 1 |
| Akhtar, M | 1 |
| Abeles, RH; Jennedy, JP; Levy, HL; Mudd, SH | 1 |
| McCully, KS | 1 |
| Milner, L; Weissbach, H | 1 |
| Parry, TE | 1 |
| Easley, LW | 1 |
| Burton, EG; Sakami, W | 1 |
| Demain, AL; Lago, BD | 1 |
| Aschkenasy, A | 1 |
| Henderson, RF; Henderson, TR | 1 |
| Newberne, PM; Young, VR | 1 |
| Daniel, LJ; Lust, G | 2 |
| Babcock, K; Daniel, JW | 1 |
| Shah, E; Stokstad, EL; Webb, RS | 1 |
| Ehrich, WE; György, P; Langer, BW | 1 |
| Barbiroli, B; Caldarera, CM; Marchetti, M | 1 |
| Guttman, HN | 1 |
| Agatov, PA; Galanina, LA | 1 |
| Sharlaĭ, IV; Tal'vik, EI; Zhagullo, EM | 1 |
| Boger, WP; Gavin, JJ; McClelland, J | 1 |
| Hegsted, DM; McCombs, HL; Roach, AM | 1 |
| Cardi, E; Ehrich, WE; Goldblatt, H; György, P; Hirooka, M; Langer, BW | 1 |
| Netke, SP; Patle, BR | 1 |
| Cardi, E; György, P; Hirooka, M; Langer, BW; Rose, CS | 1 |
| Dinn, JJ; Scott, JM; Weir, DG; Wilson, P | 1 |
| Krueger, JH; Margolin, W; Mulligan, JT; Walker, GC | 1 |
| Láhoda, F | 1 |
| Dev, IK; Harvey, RJ | 1 |
| Cooper, BA; Grauer, K; Lue-Shing, H; Matiaszuk, N; Pottier, A; Rosenblatt, DS | 1 |
| Hoover, KL; Lynch, PH; Poirier, LA | 1 |
| Metz, J; van der Westhuyzen, J | 1 |
| Kliasheva, RI | 1 |
| Bishop, AJ; Cooper, BA; Haworth, JC; Rosenblatt, DS; Schroeder, ML; Schuh, S; Seargeant, LE | 1 |
| Dowton, SB; Fulton, AB; Levy, HL; Robb, RM | 1 |
| Chanarin, I; Hewlett, AM; Lewis, JD; Lumb, M; Nunn, JF; Skacel, PO | 1 |
| Linnell, JC; Mikol, YB; Poirier, LA; Wilson, MJ | 1 |
| Myasishcheva, NV; Poirier, LA; Stoner, GD; Wilson, MJ | 1 |
| Chanarin, I; Deacon, R; Jennings, P; Lumb, M; Perry, J; Purkiss, P; Sharer, N | 1 |
| Brody, T; Chan, MM; Stokstad, EL; Watson, JE | 1 |
| Fujii, K; Huennekens, FM; Nagasaki, T | 1 |
| Cooper, BA; Harpey, JP; Lafourcade, J; Le Moël, G; Rosenblatt, DS; Roy, C | 1 |
| Nauss, KM; Newberne, PM | 1 |
| Wickramasinghe, SN | 1 |
| Deguchi, T; Marumo, H; Okumura, S | 1 |
| McGing, PG; Scott, JM | 1 |
| Heckmann, G; Hörig, JA; Lamm, L; Renz, P | 1 |
| Kuniskiĭ, DG | 1 |
| Blakely, R; Coakley, G; Spector, R | 1 |
| Becker, PJ; Delport, R; Potgieter, H; Ubbink, JB; van der Merwe, A; Vermaak, WJ | 1 |
| Eichel, J; González, JC; Hotze, M; Matthews, RG; Schröder, J | 1 |
| Allen, RH; Lindenbaum, J; Stabler, SP | 3 |
| Blom, HJ; Copius Peereboom-Stegeman, JH; Deabreu, RA; Eskes, TK; Noordhoek, J; Trijbels, FJ; Vanaerts, LA | 1 |
| Christensen, B; Guttormsen, AB; Refsum, H; Riedel, B; Schneede, J; Svardal, A; Ueland, PM | 1 |
| Henning, SM; Jacob, RA; Swendseid, ME; Wu, MM | 1 |
| Christensen, B; Fiskerstrand, T; Refsum, H; Tysnes, OB; Ueland, PM | 1 |
| Begley, JA; Chu, RC; Colligan, PD; Hall, CA | 2 |
| Drummond, JT; Matthews, RG | 2 |
| Rees, MM; Rodgers, GM | 1 |
| Eskes, TK; Hollanders, HM; Peereboom-Stegeman, JH; Steegers, EA; Steegers-Theunissen, RP; Thomas, CM; Trijbels, FJ | 1 |
| Bergmark, C; de Faire, U; Mansoor, MA; Svardal, AM; Swedenborg, J; Ueland, PM | 1 |
| Essien, FB; Wannberg, SL | 1 |
| Abileah, S; Christman, JK; Dizik, M; Sheikhnejad, G; Wainfan, E | 1 |
| Bierdrager, E; Rauwerda, JA; Stehouwer, CD; van den Berg, M | 1 |
| Guttormsen, AB; Refsum, H; Schneede, J; Ueland, PM | 1 |
| Aukrust, P; Berge, RK; Frøland, SS; Müller, F; Svardal, AM; Ueland, PM | 1 |
| Allen, RH; Buring, JE; Gaziano, JM; Hennekens, CH; Kok, FJ; Reynolds, RD; Stabler, SP; Stampfer, MJ; Verhoef, P; Willett, WC | 1 |
| Kim, SH; Moon, YS; Park, CS | 1 |
| Dennis, VW; Robinson, K | 1 |
| Fazzio, TG; Roth, JR | 1 |
| Amendt, K; Diehm, C; Hsu, E; Stammler, F; Stockinger, K | 1 |
| Crowe, SF; Ross, CK | 1 |
| Crooks, R; Dudman, N; Finucane, P; Fryer, J; Guo, XW; Nair, B; Silberberg, J; Wlodarczyk, J; Xie, LJ | 1 |
| Abad, LW; Dellaripa, P; Muldoon, BA; Nadeau, MR; Rosenberg, IH; Roubenoff, R; Selhub, J | 1 |
| Matthews, JH | 1 |
| Edwards, SL; Ma, KN; Potter, JD; Schaffer, D; Slattery, ML | 1 |
| Fushiki, S; Matsumoto, K; Nishizawa, Y; Terada, N; Yamamoto, T | 1 |
| Fluhr, K; Goulding, CW; Huang, S; Jarrett, JT; Matthews, RG | 1 |
| Arnold, G; Barness, LA; Harding, CO; Rosenblatt, DS; Wolff, JA | 1 |
| Boiocchi, M; Corona, G; Donada, C; Fabris, M; Toffoli, G; Viel, A; Zarrelli, A | 1 |
| Abrahamsson, L; Andersson, M; Bagby, J; Dyrehag, LE; Gottfries, CG; Regland, B | 1 |
| Braeuer, HC; Kohlschütter, A; Rosenblatt, DS; Scheying, H; Steen, C | 1 |
| George, SE; Hall, LL; Kohan, MJ; Styblo, M; Thomas, DJ | 1 |
| Beaulieu, AJ; Bostom, AG; Gohh, RY; Hume, AL; Jacques, PF; Nadeau, MR; Rosenberg, IH; Selhub, J | 1 |
| Gomes, J; Menawat, AS | 1 |
| Adão, M; Azinheira, J; Bordalo-Sá, AL; Correia, JM; Luís, AS; Pina, JE; Reis, HP; Reis, RP; Santos, L; Tavares, J | 2 |
| Gérard, M; Ogier de Baulny, H; Saudubray, JM; Zittoun, J | 1 |
| Arn, PH; Driscoll, DJ; Rosenblatt, DS; Williams, CA; Zori, RT | 1 |
| Watkins, D | 1 |
| Hamano, H; Takizawa, S | 1 |
| Boddie, AM; Dembure, PP; Elsas, LJ; Fisher, AJ; Macmahon, W; Saxe, D; Steen, MT; Sullivan, KM | 1 |
| Campeau, E; Gravel, RA; Hwang, HY; Leclerc, D; Phillips, JA; Rosenblatt, DS; Saberi, F; Shane, B; Wilson, A | 1 |
| Banerjee, R; Berge, RK; Bose, S; Fiskerstrand, T; Gulati, S; Pezacka, EH; Refsum, H; Riedel, B; Seetharam, B; Ueland, PM | 1 |
| Cooney, CA; Kodell, RL; Moore, SR; Wolff, GL | 1 |
| Chen, J; Hunter, DJ; Kelsey, K; Rimm, EB; Stampfer, MJ; Verhoef, P; Willett, WC | 1 |
| Cole, DE; Daly, PA; Evrovski, J; Langman, LJ; Miner, SE; Ross, HJ; Wong, PY | 1 |
| Cattaneo, M | 1 |
| Alders, D; de Jong, SC; Jakobs, C; Kostense, PJ; Pals, G; Rauwerda, JA; Stehouwer, CD; van den Berg, M | 1 |
| Odekerken, DA; Rakic, M; Sijbrands, EJ; Silberbusch, J; Slaats, EH; Smulders, YM; Stehouwer, CD; Treskes, M | 1 |
| Leppert, M; Potter, JD; Samowitz, W; Schaffer, D; Slattery, ML | 1 |
| Christensen, B; Gravel, RA; Leclerc, D; Platt, R; Rozen, R; Wilson, A; Wu, Q; Yang, H | 1 |
| Gravel, RA; Leclerc, D; Rosenblatt, DS; Wilson, A | 1 |
| Duvaltier, I; Labrune, P; Marquet, J; Niaudet, P; Odièvre, M; Trioche, P; Zittoun, J | 1 |
| Blom, HJ; Eskes, TK; Hamel, BC; Kuijpers-Jagtman, AM; Spauwen, PH; Steegers, EA; Steegers-Theunissen, RP; Thomas, CM; Wong, WY | 1 |
| Dudman, NP; Elsworth, GR; Guo, XW; Kelly, FD; Li, D; Mann, NJ; Sinclair, AJ; Wilson, AK | 1 |
| Mayer, O; Rosolová, H; Simon, J | 1 |
| Dawson, EB; Evans, DR; Harris, WA; Van Hook, JW | 1 |
| Chao, CL; Chien, KL; Lee, YT | 1 |
| Berger, PB; Dumesic, DA; Herrmann, RR | 1 |
| Brouwer, IA; Duran, M; Eskes, TK; Hautvast, JG; Steegers-Theunissen, RP; Thomas, CM; van Dusseldorp, M | 1 |
| Goodrich-Blair, H; Kolter, R | 1 |
| Apeland, T; Kristensen, O; Mansoor, MA; Strandjord, RE | 1 |
| Butzkueven, H; King, JO | 1 |
| Hanefeld, M; Julius, U; Menschikowski, M; Pietzsch, J; Pixa, A | 1 |
| Brand, GM; Duthie, SJ; Grant, G; Narayanan, S | 1 |
| Booth, GL; Wang, EE | 1 |
| Robinson, K; van Guldener, C | 1 |
| Boers, GH; Naughten, ER; Wilcken, B; Wilcken, DE; Yap, S | 1 |
| Becker, A; Surdin-Kerjan, Y; Thomas, D | 1 |
| Briddon, A; Patel, N | 1 |
| Graefe, U; Henning, BF; Tepel, M; Zidek, W | 1 |
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| Beiser, A; Bookman, E; Chen, F; Chen, WM; Doheny, KF; Gogarten, SM; Hsu, FC; Jacques, P; Keene, KL; Liu, X; Nelson, S; Sale, MM; Selhub, J; Seshadri, S; Wang, L; Weinstein, G; Williams, SR; Wolf, PA; Worrall, BB; Yang, Q; Zilka, M | 1 |
| Ashapkin, VV; Fedotova, IB; Merzalov, IB; Pavlova, GV; Perepelkina, OV; Poletaeva, II; Surina, NM | 1 |
| Baba, Y; Chan, AT; Fuchs, CS; Giovannucci, EL; Inamura, K; Kim, SA; Mima, K; Nishihara, R; Ogino, S; Qian, ZR; Schernhammer, ES; Sukawa, Y; Wang, M; Wu, K; Yamauchi, M; Zhang, X | 1 |
| Chen, W; Li, KT; Peng, WF; Xia, W | 1 |
| Cheng, LM; Hsu, TR; Huang, YH; Lin, HY; Lo, MY; Lu, YH; Niu, DM; Wu, TJ | 1 |
| Baumgartner, MR; Burda, P; Chinnery, PF; Demirkol, M; Dionisi-Vici, C; Dobbelaere, D; Fowler, B; Froese, DS; Gökcay, G; Häberle, J; Huemer, M; Lossos, A; Mengel, E; Morris, AA; Mulder-Bleile, R; Niezen-Koning, KE; Parini, R; Plecko, B; Rokicki, D; Schiff, M; Schimmel, M; Sewell, AC; Sperl, W; Spiekerkoetter, U; Steinmann, B; Suormala, T; Taddeucci, G; Trefz, F; Trejo-Gabriel-Galán, JM; Tsuji, M; Vilaseca, MA; von Kleist-Retzow, JC; Walker, V; Zeev, BB; Zeman, J | 1 |
| Berge, RK; Bjørndal, B; Lysne, V; Nordrehaug, JE; Nygård, O; Skorve, J; Vik, R | 1 |
| Hoeflich, A; Muráni, E; Nuchchanart, W; Oster, M; Ponsuksili, S; Trakooljul, N; Wimmers, K; Wirthgen, E; Zeyner, A | 1 |
| Korosi, A; Lucassen, PJ; Naninck, EF; Oosterink, JE; Schierbeek, H; van Goudoever, JB | 1 |
| Braun, KV; Franco, OH; Hofman, A; Jaddoe, VW; Kiefte-de Jong, JC; van den Hooven, EH; Voortman, T | 1 |
| Bennett, C; Bhat, DS; Deshmukh, M; Gruca, L; Gurav, N; Joshi, S; Kalhan, SC; Kalyanaraman, K; Katre, P; Lubree, H; Marczewski, S; Naik, SS; Pandit, S; Yajnik, CS | 1 |
| Cho, K; Choi, WS; Crane, CL; Mabasa, L; Park, CS; Singh, RK | 1 |
| Chen, YM; Fan, YY; Lin, XL; Liu, YT; Xu, CH; Zeng, FF; Zhang, XL | 1 |
| Bent, S; Hendren, RL; James, SJ; Lawton, B; Rosenblatt, A; Widjaja, F | 1 |
| Block, G; Carmichael, SL; Golden, C; Metayer, C; Selvin, S; Singer, AW | 1 |
| Giardina, C; Hanley, MP; Kadaveru, K; Perret, C; Rosenberg, DW | 1 |
| Aldámiz-Echevarría, L; Couce, ML; Fernández-Marmiesse, A; Hermida, A; Leis, R; Llarena, M; Roca, I; Sánchez-Pintos, P; Vitoria, I | 1 |
| Aris, IM; Chong, MF; Chong, YS; Fortier, MV; Gluckman, PD; Godfrey, KM; Kramer, MS; Lee, YS; Quah, PL; Saw, SM; Tint, MT; van Lee, L; Yap, FK | 1 |
| Gogula, S; Guzzo, MB; Jacobs, MR; Jacobsen, DW; Jakubowski, H; Kräutler, B; Nguyen, HT; Nguyen, L; Ogwang, S; Pham, TH; Ruetz, M; Timpona, JL; Wolff, KA; Wyszczelska-Rokiel, M; Zhang, GF | 1 |
| Armato, L; Bedin, S; Fiore, E; Gianesella, M; Giudice, E; Morgante, M; Perillo, L; Piccione, G | 1 |
| Li, H; Sieff, C | 1 |
| Bandeira, A; Baumgartner, MR; Benoist, JF; Blom, H; Burlina, A; Cerone, R; Couce, ML; Diodato, D; Dionisi-Vici, C; Garcia-Cazorla, A; Huemer, M; Kožich, V; la Marca, G; Pasquini, E; Schiff, M; Schwahn, B; Vilarinho, L; Weisfeld-Adams, JD | 1 |
| Anderson, LN; Carre, A; Clauss, TR; Kim, YM; Li, X; Maezato, Y; Metz, TO; Nandhikonda, P; Rodionov, DA; Rodionova, IA; Romine, MF; Wright, AT; Xu, C | 1 |
| Wu, MM; Yang, F | 1 |
| Aylsworth, AS; Botto, LD; Carmichael, SL; Correa, A; Gilboa, SM; Langlois, PH; Luben, TJ; Nembhard, WN; Olshan, AF; Richmond-Bryant, J; Shaw, GM; Stingone, JA | 1 |
| Christopher, R; Majumdar, V; Nagaraja, D; Rudreshkumar, KJ | 1 |
| Koutmos, M; Yamada, K | 1 |
| Adam, AC; Bock, C; Dahl, JA; Espe, M; Fernandes, JMO; Jakt, LM; Klughammer, J; Skjærven, KH | 1 |
| Attia, JR; Butler, T; Chan, EC; Collins, CE; Evans, TJ; Hure, AJ; Mossman, D; Smith, R; Smith, T; Taylor, RM; Wong-Brown, MW | 1 |
| Hammerschmidt, F; Schweifer, A | 1 |
| Ray, D; Richardson, BC; Strickland, FM | 1 |
| Bennett, CD; Bhat, DS; Gruca, LL; Kalhan, SC; Katre, P; Kurpad, AV; Yajnik, CS | 1 |
| Anderson, KE; Fan, H; Hoyt, ML; Marley, AR; Zhang, J | 1 |
| Kalani, A; Lominadze, D; Muradashvili, N; Nuru, M; Tyagi, N | 1 |
| Bassett, JK; Brinkman, MT; Buchanan, DD; Chamberlain, JA; Dugué, PA; English, DR; Giles, GG; Hodge, AM; Hopper, JL; Joo, JE; Jung, CH; Makalic, E; Milne, RL; Schmidt, DF; Southey, MC | 1 |
| Collins, CE; Evans, TJ; Hure, AJ; Smith, R; Taylor, RM | 1 |
| Crider, KS; Mitchell, AA; Parker, SE; Petersen, JM; Tinker, SC; Werler, MM | 1 |
| Belardo, A; Gevi, F; Zolla, L | 1 |
| Goyal, A; Gupta, JK; Narayan Yadav, H; Qureshi, SS | 1 |
| Murphy, C; Shah, K | 1 |
| Adrian, L; Deobald, D; Hanna, R; Layer, G; Shahryari, S | 1 |
| Ampong, I; Eid, N; Griffiths, HR; Morgan, HL; Rouillon, C; Watkins, AJ | 1 |
| Antwi, SO; Campbell, PT; Liao, LM; McGlynn, KA; Norez, DA; Patel, T; Petrick, JL; Roberts, LR; Stevens, VL | 1 |
| Guéant, JL; Hsu, SB; Namour, F; Oussalah, A; Siblini, Y; Zgheib, R | 1 |
| Bergamini, C; Capelli, I; Cappuccilli, M; Cianciolo, G; Conte, D; Donati, G; Giacomelli, FA; La Manna, G; Natali, T | 1 |
| Mao, QQ; Wei, DH | 1 |
| Bouvier, D; Brailova, M; Minet-Quinard, R; Regnier, A; Sapin, V; Szymanowski, M | 1 |
| Elling, FJ; Evans, TW; Hemingway, JD; Kharbush, JJ; Pearson, A; Spieck, E; Summons, RE | 1 |
| Dawes, SS; de Wet, TJ; Kipkorir, T; Koch, A; Mashabela, GT; Mizrahi, V; Warner, DF; Wiesner, L | 1 |
| Gilfix, BM; Rosenblatt, DS; Sorin, M; Watkins, D | 1 |
| Arkin, AP; Deutschbauer, AM; Price, MN | 1 |
| Fiore, E; Gianesella, M; Giannetto, C; Giudice, E; Morgante, M; Perillo, L; Piccione, G | 1 |
| Dank, M; Forika, G; Kiss, E; Krenacs, T; Mohacsi, R; Nemeth, Z | 1 |
| Brunet, T; Kohlhase, J; Lotz-Havla, AS; Maier, EM; Regenauer-Vandewiele, S; Schiergens, KA; Weiß, KJ | 1 |
| Eshak, ES; Inoue, M; Iso, H; Iwasaki, M; Khairan, P; Kitamura, T; Sawada, N; Shimazu, T; Sobue, T; Tsugane, S; Yamaji, T; Zha, L | 1 |
| Baker, PR; Berry, SA; Ketteridge, D; Kripps, KA; Larson, AA; McCandless, SE; Mirsky, DM; Nguyen, H; Rosenblatt, DS; Sremba, L; Van Hove, JLK; Watkins, D; Wright, EL | 1 |
| Matsha, TE; Raghubeer, S | 1 |
| Drennan, CL; Ulrich, EC | 1 |
| Jakubowski, H; Perła-Kaján, J | 1 |
| Abdul Ghani, SAB; Arul, K; Bee, GGB; Cheah, CC; Chow, PKH; Cook, SA; Lim, TR; Pei, HJ; Sandireddy, R; Shekeran, SG; Singh, BK; Singh, MK; Sinha, RA; Suzuki, A; Tikno, K; Tripathi, M; Wang, J; Widjaja, A; Wong, KA; Xiao, RP; Yen, PM; Zhang, X; Zhou, J | 1 |
| Chen, J; Duan, D; Hao, W; Li, L; Liu, J; Qin, C; Qin, S; Shen, E; Wang, Y; Wu, L; Xiao, C; Yao, L; You, J; Zhang, R; Zheng, JS | 1 |
| Beltrán, LJ; Bulleid, NJ; Johnstone, IL; Page, AP; Tjahjono, E; Winter, AD | 1 |
| Alvarez, JA; Cui, X; Ramakrishnan, U; Schoen, MS; Singh, RH; Ziegler, TR | 1 |
| Bo, Y; Cao, Y; Dou, W; Duan, D; Fu, W; Liu, Y; Lyu, Q; Ma, S; Zeng, F; Zhao, X | 1 |
| Bao, W; Cheng, TD; Fowke, JH; Johnson, KC; Liang, X; Liu, B; Mozhui, K; Saquib, N; Sen, S; Shadyab, AH; Snetselaar, LG; Sun, Y; Wallace, RB | 1 |
| Eguchi, T; Hamano, Y; Hashimoto, J; Kozone, I; Kudo, F; Maruyama, C; Minato, A; Nagano, N; Sato, S; Shin-Ya, K | 1 |
| Boles, E; Lehner, S | 1 |
| Andres, C; Bitar, T; Hleihel, W; Roufael, M; Sacre, Y | 1 |
| Borowicz, PP; Caton, JS; Crouse, MS; Dahlen, CR; McLean, KJ; Neville, BW; Neville, TL; Reynolds, LP; Syring, JG; Ward, AK | 1 |
| Dohra, H; Hamada, M; Kotsuchibashi, Y; Mori, K; Moriuchi, R; Saito, A | 1 |
| Cegan, A; Didangelos, T; Kantartzis, K; Kotzakioulafi, E; Peter, A; Schleicher, E | 1 |
| Ando, N; Burnim, A; Wang, H; Watkins, MB | 1 |
| Amich, J; Scott, J | 1 |
| Koutmos, M; Mendoza, J; Purchal, M; Yamada, K | 1 |
85 review(s) available for methionine and vitamin b 12
| Article | Year |
|---|---|
B12 -- dependent methionine synthetase as a potential target for cancer chemotherapy.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Cells, Cultured; Cobamides; Enzyme Activation; Flavoproteins; Leukemia L1210; Methionine; Methyltransferases; Mice; NADP; Neoplasms; S-Adenosylmethionine; Transcobalamins; Vitamin B 12 | 1976 |
The role of vitamin B12 and folic acid in hemato- and other cell-poiesis.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acids; Animals; Bacteria; Coenzymes; DNA; Folic Acid; Folic Acid Deficiency; Formiminoglutamic Acid; Glutamates; Hematopoiesis; Humans; Megaloblasts; Methionine; Methylmalonyl-CoA Mutase; Neurologic Manifestations; Purines; Pyrimidines; Ribonucleotide Reductases; Tetrahydrofolates; Vitamin B 12; Vitamin B 12 Deficiency | 1976 |
Anesthesia and the leucocyte.
Topics: Anemia, Megaloblastic; Anesthetics; Animals; Bone Marrow; Cell Movement; Chemotaxis, Leukocyte; Halothane; Humans; Liver; Methionine; Neutropenia; Neutrophils; Nitrous Oxide; Phagocytosis; Rats; Spinal Cord; Thymidine; Vitamin B 12 | 1979 |
New developments in the field of vitamin B12: enzymatic reactions dependent upon corrins and coenzyme B12.
Topics: Catalysis; Chemical Phenomena; Chemistry; Escherichia coli; Ethanolamine Ammonia-Lyase; Methane; Methionine; Propanediol Dehydratase; Ribonucleotide Reductases; Vitamin B 12 | 1977 |
Megaloblastic anaemia and disorders affecting utilisation of vitamin B12 and folate in childhood.
Topics: Adolescent; Adult; Anemia, Hemolytic; Anemia, Macrocytic; Anemia, Megaloblastic; Anemia, Pernicious; Biological Transport; Bone Marrow; Bone Marrow Cells; Child; Child, Preschool; Female; Folic Acid; Folic Acid Deficiency; Homocystinuria; Humans; Infant; Intrinsic Factor; Malabsorption Syndromes; Male; Metabolism, Inborn Errors; Methionine; Methionine Adenosyltransferase; Orotic Acid; Phenylketonurias; Tetrahydrofolate Dehydrogenase; Transcobalamins; Vitamin B 12 | 1976 |
Inborn errors of folate metabolism (first of two parts).
Topics: Adult; Animals; Bone Marrow; Bone Marrow Cells; DNA; Fibroblasts; Folic Acid; Folic Acid Deficiency; Humans; Liver; Metabolism, Inborn Errors; Methionine; Methyltransferases; Rats; Skin; Tetrahydrofolate Dehydrogenase; Vitamin B 12; Vitamin B 12 Deficiency | 1975 |
Regulation of methionine synthesis in Escherichia coli.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacterial Proteins; Base Sequence; Escherichia coli; Escherichia coli Proteins; Gene Expression Regulation, Bacterial; Homocystine; Leucine Zippers; Methionine; Methyltransferases; Molecular Sequence Data; Trans-Activators; Vitamin B 12 | 1991 |
Labile methyl groups and the promotion of cancer.
Topics: Animals; Antibody Formation; Carcinogens; Choline; Choline Deficiency; Diet; DNA; Folic Acid; Folic Acid Deficiency; Humans; Immunity, Cellular; Lipotropic Agents; Liver; Liver Neoplasms; Methionine; Methylation; Neoplasms; Neoplasms, Experimental; Pharmaceutical Preparations; Risk; Tetrahydrofolates; Vitamin B 12; Vitamin B 12 Deficiency | 1986 |
Functional methionine synthase deficiency (cblE and cblG): clinical and biochemical heterogeneity.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Anemia, Megaloblastic; Cells, Cultured; Female; Fibroblasts; Genetic Complementation Test; Homocystinuria; Humans; Infant; Infant, Newborn; Male; Methionine; Methyltransferases; Nervous System Diseases; Vitamin B 12 | 1989 |
Cobalamin-folate interrelations.
Topics: Anemia, Megaloblastic; Animals; Central Nervous System Diseases; Coenzymes; Folic Acid; Folic Acid Deficiency; Formates; Humans; Methionine; Models, Biological; Tetrahydrofolates; Thymidine; Vitamin B 12; Vitamin B 12 Deficiency | 1989 |
Cobalamin-folate interrelations: a critical review.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Megaloblastic; Animals; Central Nervous System; Deoxyuridine; Disease Models, Animal; Drug Interactions; Enzyme Activation; Folic Acid; Folic Acid Deficiency; Histidine; Humans; Liver; Methionine; Methylmalonyl-CoA Mutase; Nitrous Oxide; Oxidation-Reduction; Pteroylpolyglutamic Acids; Purines; Serine; Tetrahydrofolates; Thymidylate Synthase; Vitamin B 12; Vitamin B 12 Deficiency | 1985 |
Clinical aspects of the interaction between nitrous oxide and vitamin B12.
Topics: Anesthesia, Inhalation; Animals; Female; Humans; Methionine; Nitrous Oxide; Pregnancy; Time Factors; Vitamin B 12 | 1987 |
Vitamin B12-folate interrelationships.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acids; Animals; Bone Marrow; Folic Acid; Folic Acid Deficiency; Formates; Formiminoglutamic Acid; Histidine; Homeostasis; Humans; Liver; Megaloblasts; Methionine; Methylation; Nitrous Oxide; Peptide Synthases; Pteroylpolyglutamic Acids; Purines; Serine; Thymidine Monophosphate; Thymidylate Synthase; Thyroid Gland; Vitamin B 12; Vitamin B 12 Deficiency | 1985 |
Lipotropes and fetal growth.
Topics: Animal Nutritional Physiological Phenomena; Animals; Animals, Newborn; Choline; Cystine; Deficiency Diseases; Dietary Proteins; Embryonic and Fetal Development; Female; Humans; Lipotropic Agents; Maternal-Fetal Exchange; Methionine; Nutritional Physiological Phenomena; Plant Proteins; Pregnancy; Pregnancy Complications; Protein Biosynthesis; Rats; Vitamin B 12 | 1971 |
Epilepsy and schizophrenia: relationship and biochemistry.
Topics: Anemia, Macrocytic; Anticonvulsants; Electroconvulsive Therapy; Electroencephalography; Epilepsy; Folic Acid; Folic Acid Deficiency; Humans; Mental Disorders; Methionine; Phenethylamines; Phenothiazines; Schizophrenia; Vitamin B 12 | 1968 |
Insect nutrition: current developments and metabolic implications.
Topics: Amino Acids; Animals; Aphids; Ascorbic Acid; Choline; Coleoptera; Cystine; DNA; Drosophila melanogaster; Fatty Acids; Folic Acid; Glycine; Insecta; Lepidoptera; Methionine; Minerals; Nutritional Physiological Phenomena; Proline; RNA; Sterols; Tyrosine; Urea; Vitamin B 12; Vitamin E | 1973 |
Mechanisms for synthesis of organic mercury found in fish.
Topics: Animals; Biotransformation; Chlorides; Fishes; Humans; Mercury; Mercury Poisoning; Methionine; Methylation; Methylmercury Compounds; Neurospora crassa; Organometallic Compounds; Vitamin B 12 | 1972 |
New approach in treatment of cardiac decompensation in U.S.S.R.
Topics: Adenosine Triphosphatases; Adenosine Triphosphate; Amino Acids; Aortic Valve Stenosis; Cardiac Glycosides; Digitalis Glycosides; Diuretics; Heart Failure; Heart Ventricles; Hemodynamics; Humans; Hypertrophy; Methionine; Myosins; Nucleic Acids; Orotic Acid; Pantothenic Acid; Protein Biosynthesis; Protein Precursors; Stimulation, Chemical; Strophanthins; USSR; Vitamin B 12 | 1973 |
Regulation of folate-dependent enzymes.
Topics: Animals; Coliphages; Enterobacter; Enterococcus faecalis; Escherichia coli; Feedback; Haplorhini; Lacticaseibacillus casei; Liver; Methionine; Methyltransferases; Mice; Micrococcus; Polyomavirus; Pseudomonas; Rats; Salmonella typhimurium; Serine; Simian virus 40; Tetrahydrofolate Dehydrogenase; Vitamin B 12 | 1971 |
[Sulfate reduction and biosynthesis of sulfur containing amino acids (author's transl)].
Topics: Amino Acids, Sulfur; Bacteria; Cysteine; Feedback; Homocysteine; Hydrogen Sulfide; Methionine; Oxidation-Reduction; Sulfates; Sulfur; Sulfur Acids; Sulfuric Acids; Thiosulfates; Vitamin B 12 | 1974 |
Observations on the biochemical basis of megaloblastic anaemia.
Topics: Anemia, Macrocytic; Deoxyuridine; DNA; Erythrocytes, Abnormal; FIGLU Test; Folic Acid Deficiency; Homocysteine; Humans; Methionine; Nervous System Diseases; Tetrahydrofolate Dehydrogenase; Tetrahydrofolates; Thymine Nucleotides; Vitamin B 12; Vitamin B 12 Deficiency | 1972 |
Sulfur in ruminant nutrition.
Topics: Animal Nutritional Physiological Phenomena; Animals; Calcium; Cattle; Cellulose; Copper; Cysteine; Cystine; Methionine; Milk; Molybdenum; Phosphorus; Riboflavin; Rumen; Selenium; Sheep; Starch; Sulfates; Sulfur; Sulfur Radioisotopes; Vitamin B 12; Wool; Zinc | 1972 |
The biosynthesis of methionine.
Topics: Animals; Apoproteins; Bacteria; Catalysis; Chemical Phenomena; Chemistry; Cobamides; Drug Stability; Enzyme Activation; Escherichia coli; Flavins; Homocysteine; Methionine; Methyltransferases; Molecular Weight; Oxidation-Reduction; Plants; S-Adenosylmethionine; Tetrahydrofolates; Vitamin B 12 | 1973 |
Methods of studying intestinal absorption.
Topics: Animals; Biological Transport; Carbon Dioxide; Electric Conductivity; Ethanol; Evaluation Studies as Topic; Galactose; Humans; Intestinal Absorption; Intestinal Mucosa; Intestine, Small; Lymph; Mathematics; Methionine; Methods; Models, Biological; Organ Size; Oxygen Consumption; Perfusion; Vitamin A; Vitamin B 12; Water | 1974 |
Mechanisms of corrin dependent enzymatic reactions.
Topics: Acetates; Amino Acid Isomerases; Ammonia-Lyases; Arsenicals; Chemical Phenomena; Chemistry; Clostridium; Coenzymes; Deamination; Escherichia coli; Ethanol; Glutamates; Glutarates; Isomerases; Kinetics; Malonates; Methane; Methionine; Methylmercury Compounds; Porphyrins; Ribonucleotide Reductases; Sarcina; Terminology as Topic; Vitamin B 12 | 1974 |
Vitamin-responsive inherited diseases affecting the nervous system.
Topics: Coenzymes; Genotype; Homocysteine; Humans; Metabolism, Inborn Errors; Methionine; Molecular Biology; Mutation; Neurologic Manifestations; Phenotype; Pyridoxine; Vitamin B 12; Vitamins | 1974 |
Nutritional factors in choline deficiency.
Topics: Animals; Choline Deficiency; Diet; Methionine; Rats; Vitamin B 12 | 1968 |
Metabolic role of vitamin B12.
Topics: Acetates; Amides; Amino Alcohols; Anemia, Pernicious; Caproates; Clostridium; Cobalt; Coenzyme A; Coenzymes; DNA; Glutamates; Humans; Hydrogen; Isomerases; Lysine; Malonates; Methane; Methionine; Nucleotides; Oxidoreductases; Transferases; Vitamin B 12 | 1968 |
Total synthesis of acetate from CO2 by heterotrophic bacteria.
Topics: Acetates; Adenosine Triphosphate; Bacteria; Carbon Dioxide; Citric Acid Cycle; Clostridium; Folic Acid; Formates; Intrinsic Factor; Methane; Methionine; Peptococcus; Vitamin B 12 | 1969 |
Defective vitamin B 12 metabolism in the human being: changes in methionine and methylmalonic acid excretion.
Topics: Amino Acids; Animals; Brain; Coenzymes; Homocysteine; Homocystine; Humans; Infant; Male; Malonates; Metabolic Diseases; Methionine; Rats; Vitamin B 12 | 1969 |
Interrelationships of vitamin B12 and folate in man.
Topics: Anemia, Macrocytic; Animals; Folic Acid; Folic Acid Deficiency; Humans; Liver; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1970 |
Drugs, toxins and dietary amino acids affecting vitamin B12 or folic acid absorption or utilization.
Topics: Amino Acids; Anemia, Macrocytic; Contraceptives, Oral; Diet; DNA; Ethanol; Folic Acid; Folic Acid Antagonists; Folic Acid Deficiency; Glycine; Homocysteine; Humans; Malabsorption Syndromes; Methionine; Pharmacology; Serine; Toxins, Biological; Vitamin B 12 | 1970 |
Aggravation or initiation of megaloblastosis by amino acids in the diet.
Topics: Amino Acids; Anemia, Pernicious; Cell Nucleus; Diet; DNA; Erythrocytes; Folic Acid; Folic Acid Deficiency; Glycine; Hematologic Diseases; Homocystine; Humans; Methionine; Polycythemia; Pyridoxine; Serine; Tetrahydrofolate Dehydrogenase; Thymine; Vitamin B 12; Vitamin B 12 Deficiency | 1970 |
Roles of vitamin B 12 and folic acid in methionine synthesis.
Topics: Carbon Isotopes; Catalysis; Chemical Phenomena; Chemistry; Escherichia coli; Folic Acid; Homocysteine; Methionine; Methylation; Methyltransferases; S-Adenosylmethionine; Transferases; Vitamin B 12 | 1970 |
The interrelationships among folate, vitamin B12, and methionine metabolism.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acids; Animals; DNA; Drug Interactions; Folic Acid; Formates; Histidine; Humans; Megaloblasts; Methionine; Nitrous Oxide; Peptide Synthases; Pteroylpolyglutamic Acids; Purines; Serine; Tetrahydrofolates; Thymidine Monophosphate; Thyroid Gland; Vitamin B 12 | 1983 |
Effects of dietary folate, vitamin B12 and methionine/choline deficiency on immune function.
Topics: Animals; Antibody Formation; Choline Deficiency; Deoxyuridine; Drug Interactions; Folic Acid; Folic Acid Deficiency; Humans; Hypersensitivity, Delayed; Immunity; Lymphocyte Activation; Lymphocytes; Lymphoid Tissue; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1981 |
The deoxyuridine suppression test: a review of its clinical and research applications.
Topics: Alcoholism; Anemia, Hemolytic; Anticonvulsants; Bone Marrow Cells; Bone Marrow Diseases; Cells; Deoxyuridine; Erythrocytes, Abnormal; Female; Fluorouracil; Folic Acid; Folic Acid Deficiency; Formyltetrahydrofolates; Homocysteine; Humans; Hypothyroidism; Lymphocyte Activation; Methionine; Pregnancy; Pregnancy Complications; Statistics as Topic; Tetrahydrofolates; Vitamin B 12; Vitamin B 12 Deficiency | 1981 |
Homocysteinemia: association of a metabolic disorder with vascular disease and thrombosis.
Topics: Adult; Amino Acid Metabolism, Inborn Errors; Blood Coagulation Factors; Blood Platelets; Child; Cystathionine beta-Synthase; Endothelium, Vascular; Fibrinolytic Agents; Folic Acid Deficiency; Homocysteine; Humans; Incidence; Male; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Oxidoreductases Acting on CH-NH Group Donors; Penicillamine; Risk Factors; Thrombosis; Vascular Diseases; Vitamin B 12; Vitamin B 6 Deficiency; Vitamins | 1993 |
Homocysteinemia and vascular disease in end-stage renal disease.
Topics: Arteriosclerosis; Female; Folic Acid; Homocysteine; Humans; Kidney; Kidney Failure, Chronic; Kidney Transplantation; Male; Methionine; Middle Aged; Pyridoxine; Thrombosis; Vitamin B 12 | 1996 |
Functional methionine synthase deficiency due to cblG disorder: a report of two patients and a review.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Macrocytic; Anemia, Megaloblastic; Anorexia; Child, Preschool; Developmental Disabilities; Female; Fibroblasts; Genetic Complementation Test; Homocystine; Homocystinuria; Humans; Male; Methionine; Skin; Vitamin B 12 | 1997 |
Vitamin B-12 deficiency in the elderly: current dilemmas.
Topics: Acyl Coenzyme A; Aged; Aged, 80 and over; Female; Homocysteine; Humans; Male; Methionine; Methylmalonic Acid; Middle Aged; Vitamin B 12; Vitamin B 12 Deficiency | 1997 |
Fed-batch bioproduction of spectinomycin.
Topics: Glucose; Kinetics; Methionine; Molecular Structure; Oxygen; Spectinomycin; Streptomyces; Vitamin B 12 | 1998 |
Remethylation defects: guidelines for clinical diagnosis and treatment.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Betaine; Child, Preschool; Folic Acid; Homocysteine; Humans; Hydroxocobalamin; Infant; Infant, Newborn; Metabolism, Inborn Errors; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Methylmalonic Acid; Oxidoreductases Acting on CH-NH Group Donors; Practice Guidelines as Topic; Vitamin B 12 | 1998 |
Relevance of vitamins, homocysteine and other metabolites in neuropsychiatric disorders.
Topics: Central Nervous System Diseases; Citrates; Demyelinating Diseases; Folic Acid; Homocysteine; Humans; Mental Disorders; Methionine; Methylmalonic Acid; Vitamin B 12 | 1998 |
[Methylenetetrahydrofolate reductase deficiency].
Topics: Biomarkers; Child, Preschool; Cystathionine; Folic Acid; Genes, Recessive; Humans; Infant; Infant, Newborn; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Mutation; Oxidoreductases Acting on CH-NH Group Donors; Pyridoxine; Vitamin B 12 | 1998 |
Hyperhomocysteinemia, atherosclerosis and thrombosis.
Topics: Adult; Aged; Animals; Arteriosclerosis; Avitaminosis; Case-Control Studies; Clinical Trials as Topic; Cohort Studies; Cross-Sectional Studies; Cystathionine beta-Synthase; Female; Folic Acid; Gene Frequency; Homocysteine; Homocystinuria; Hormone Replacement Therapy; Humans; Hyperhomocysteinemia; Male; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Muscle, Smooth, Vascular; Oxidoreductases Acting on CH-NH Group Donors; Prevalence; Primates; Prospective Studies; Pyridoxine; Risk Factors; Smoking; Tamoxifen; Thrombophilia; Thrombosis; Vitamin B 12 | 1999 |
Preventive health care, 2000 update: screening and management of hyperhomocysteinemia for the prevention of coronary artery disease events. The Canadian Task Force on Preventive Health Care.
Topics: Aged; Arteriosclerosis; Canada; Coronary Disease; Dietary Supplements; Disease Susceptibility; Fasting; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Mass Screening; Methionine; Preventive Medicine; Pyridoxine; Randomized Controlled Trials as Topic; Risk Factors; Vitamin B 12 | 2000 |
Homocysteine and renal disease.
Topics: Adult; Arteriosclerosis; Cardiovascular Diseases; Case-Control Studies; Child; Endothelium, Vascular; Female; Folic Acid; Folic Acid Deficiency; Follow-Up Studies; Homocysteine; Humans; Hyperhomocysteinemia; Kidney Diseases; Kidney Failure, Chronic; Kidney Transplantation; Life Tables; Male; Methionine; Peritoneal Dialysis; Prospective Studies; Pyridoxine; Renal Dialysis; Survival Analysis; Thrombophilia; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B 6 Deficiency | 2000 |
Vascular complications of severe hyperhomocysteinemia in patients with homocystinuria due to cystathionine beta-synthase deficiency: effects of homocysteine-lowering therapy.
Topics: Adolescent; Adult; Aged; Australia; Child; Child, Preschool; Cohort Studies; Cystine; Drug Resistance; Female; Folic Acid; Follow-Up Studies; Genetic Predisposition to Disease; Homocysteine; Homocystinuria; Humans; Hyperhomocysteinemia; Infant; Ireland; Male; Methionine; Middle Aged; Netherlands; Pyridoxine; Risk; Risk Factors; Thrombophilia; Vascular Diseases; Vitamin B 12 | 2000 |
Nutritional regulation of homocysteine: effects of drugs.
Topics: Acetaminophen; Analgesics, Non-Narcotic; Animals; Drug Interactions; Folic Acid; Folic Acid Antagonists; Homocysteine; Humans; Methionine; Methotrexate; Methylenetetrahydrofolate Reductase (NADPH2); Oxidoreductases Acting on CH-NH Group Donors; S-Adenosylmethionine; Vitamin B 12; Vitamin B 6 | 2001 |
Methods for measuring sulfur amino acid metabolism.
Topics: Amino Acids, Sulfur; Cardiovascular Diseases; Chromatography, High Pressure Liquid; Gas Chromatography-Mass Spectrometry; Glutathione; Homocysteine; Humans; Hyperhomocysteinemia; Kidney Failure, Chronic; Kinetics; Methionine; Methylation; Models, Biological; Radioisotope Dilution Technique; Vitamin B 12 | 2002 |
Pharmacotherapy of hyperhomocysteinaemia in patients with thrombophilia.
Topics: Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Methionine; Pyridoxine; Renal Insufficiency; Thrombophilia; Vitamin B 12; Vitamins | 2002 |
The methionine-homocysteine cycle and its effects on cognitive diseases.
Topics: Alzheimer Disease; Cardiovascular Diseases; Cognition Disorders; Dementia, Vascular; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Memory Disorders; Methionine; Methionine Adenosyltransferase; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B 6 | 2003 |
Toxicity of nitrous oxide.
Topics: Animals; Bone Marrow; Folic Acid Deficiency; Humans; Methionine; Nervous System Diseases; Nitrous Oxide; Occupational Exposure; Vitamin B 12; Vitamin B 12 Deficiency | 2003 |
NEW CHEMICAL AND BIOCHEMICAL DEVELOPMENTS IN THE VITAMIN B12 FIELD.
Topics: Ammonia; Biochemical Phenomena; Biochemistry; Chemistry, Pharmaceutical; Cobalt; Coenzymes; Fatty Acids; Glutamates; Hematinics; Lysine; Metabolism; Methane; Methionine; Vitamin B 12 | 1964 |
ENZYMATIC ASPECTS OF FOLIC ACID.
Topics: Amidohydrolases; Aminopterin; Chromatography; Clostridium; Escherichia coli; Floxuridine; Folic Acid; Ligases; Liver; Lyases; Methionine; Methotrexate; Micrococcus; Oxidoreductases; Pseudomonas; Research; Spectrophotometry; Transferases; Tritium; Vitamin B 12 | 1963 |
[THE SIGNIFICANCE OF FOLIC ACID AND VITAMIN B 12 FOR CELLULAR METABOLISM].
Topics: Adenosine Triphosphate; Celiac Disease; DNA; Folic Acid; Hematinics; Humans; Intestinal Diseases; Metabolism; Methionine; Vitamin B 12 | 1964 |
[BIOSYNTHESIS OF METHYL GROUP OF METHIONINE].
Topics: Alkylation; Amino Acids; Cysteine; Folic Acid; Homocysteine; Metabolism; Methionine; Research; Vitamin B 12 | 1964 |
Homocysteine and cardiovascular disease: interactions between nutrition, genetics and lifestyle.
Topics: Avitaminosis; Cardiovascular Diseases; Creatinine; Folic Acid; Homocysteine; Humans; Incidence; Kidney Diseases; Life Style; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Nutritional Physiological Phenomena; Polymorphism, Genetic; Pyridoxal; Riboflavin; Vitamin B 12 | 2004 |
Schizophrenia and single-carbon metabolism.
Topics: Animals; Antioxidants; Blood-Brain Barrier; Carbon; Case-Control Studies; Homocystine; Humans; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Models, Biological; Schizophrenia; Vitamin B 12 | 2005 |
Vitamin B12 and methionine synthesis: a critical review. Is nature's most beautiful cofactor misunderstood?
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Biological Transport; Bone Marrow; Folic Acid; Folic Acid Deficiency; Homocysteine; Humans; Methionine; Methylation; Myelin Sheath; Nerve Tissue; S-Adenosylmethionine; Tetrahydrofolates; Vitamin B 12; Vitamin B 12 Deficiency | 2006 |
[Risk factors for cardiovascular diseases: what is the role for homocysteine?].
Topics: Cardiovascular Diseases; Folic Acid; Follow-Up Studies; Homocysteine; Homocystinuria; Humans; Hyperhomocysteinemia; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Prospective Studies; Randomized Controlled Trials as Topic; Retrospective Studies; Risk Factors; Vitamin B 12; Vitamin B 6 | 2007 |
[Homocysteine metabolism].
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Betaine-Homocysteine S-Methyltransferase; Cardiovascular Diseases; Deuterium; Gas Chromatography-Mass Spectrometry; Gout; Homocysteine; Humans; Hyperhomocysteinemia; Isotope Labeling; Methionine; Oxidation-Reduction; Risk Factors; Serum Albumin; Vitamin B 12 | 2007 |
Mecobalamin.
Topics: Aged; Alprostadil; Animals; Cobamides; Coenzymes; Diabetic Neuropathies; Drug Administration Routes; Drug Therapy, Combination; Female; Folic Acid; Humans; Hyperhomocysteinemia; Hypoglycemic Agents; Kidney Failure, Chronic; Male; Metformin; Methionine; Methyltransferases; Peripheral Nervous System Diseases; Randomized Controlled Trials as Topic; Renal Dialysis; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B 6 | 2008 |
The isolation of the vitamin B12 coenzyme and the role of the vitamin in methionine synthesis.
Topics: Animals; History, 20th Century; History, 21st Century; Humans; Methionine; Vitamin B 12 | 2008 |
Catalysis of methyl group transfers involving tetrahydrofolate and B(12).
Topics: Humans; Methionine; Methyltransferases; Models, Molecular; Protein Conformation; Tetrahydrofolates; Vitamin B 12 | 2008 |
Cobalamin C defect: natural history, pathophysiology, and treatment.
Topics: Age of Onset; Homocysteine; Humans; Methionine; Methylmalonic Acid; Models, Biological; Vitamin B 12; Vitamin B 12 Deficiency | 2011 |
Combined methylmalonic acidemia and homocystinuria, cblC type. I. Clinical presentations, diagnosis and management.
Topics: Adolescent; Amino Acid Metabolism, Inborn Errors; Carrier Proteins; Child; Child, Preschool; Female; Homocystinuria; Humans; Infant; Infant, Newborn; Male; Methionine; Methylmalonic Acid; Models, Biological; Models, Genetic; Mutation; Neonatal Screening; Oxidoreductases; Pregnancy; Prenatal Diagnosis; Vitamin B 12; Vitamin B 12 Deficiency | 2012 |
Methionine, homocysteine, one carbon metabolism and fetal growth.
Topics: Adult; Animals; Carbon; Dietary Proteins; Energy Intake; Female; Fetal Development; Folic Acid; Homocysteine; Humans; Methionine; Pregnancy; Rats; Vitamin B 12; Vitamins | 2012 |
Role of heat-shock proteins and cobalamine in maintaining methionine synthase activity.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Heat-Shock Proteins; Homocysteine; Humans; Kinetics; Metabolic Networks and Pathways; Methionine; Methylation; Plaque, Atherosclerotic; Vitamin B 12 | 2012 |
Association of vitamin B6, vitamin B12 and methionine with risk of breast cancer: a dose-response meta-analysis.
Topics: Breast Neoplasms; Diet; Dose-Response Relationship, Drug; Female; Humans; Methionine; Pyridoxal Phosphate; Risk; Vitamin B 12; Vitamin B 6 | 2013 |
Vitamin B(12) metabolism during pregnancy and in embryonic mouse models.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Acyl Coenzyme A; Animals; Disease Models, Animal; Embryonic Development; Female; Homocysteine; Humans; Methionine; Methylmalonyl-CoA Mutase; Mice; Pregnancy; Vitamin B 12; Vitamin B 12 Deficiency | 2013 |
Lifetime requirement of the methionine cycle for neuronal development and maintenance.
Topics: Developmental Disabilities; Female; Folic Acid; Homocysteine; Humans; Methionine; Pregnancy; Prenatal Care; S-Adenosylmethionine; Vitamin B 12; Vitamin B Complex | 2014 |
Genome-wide meta-analysis of homocysteine and methionine metabolism identifies five one carbon metabolism loci and a novel association of ALDH1L1 with ischemic stroke.
Topics: Aldehyde Dehydrogenase; Carbon; Folic Acid; Genome-Wide Association Study; Genotype; Homocysteine; Humans; Methionine; Oxidoreductases Acting on CH-NH Group Donors; Stroke; Vitamin B 12 | 2014 |
Guidelines for diagnosis and management of the cobalamin-related remethylation disorders cblC, cblD, cblE, cblF, cblG, cblJ and MTHFR deficiency.
Topics: Animals; Homocysteine; Humans; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Proto-Oncogene Proteins c-cbl; Vitamin B 12 | 2017 |
[Research advances in the association between maternal intake of methyl donor nutrients during pregnancy and DNA methylation in offspring].
Topics: Betaine; Choline; DNA Methylation; Female; Folic Acid; Humans; Maternal Nutritional Physiological Phenomena; Methionine; Pregnancy; Vitamin B 12 | 2017 |
Genetic, epigenetic and genomic mechanisms of methionine dependency of cancer and tumor-initiating cells: What could we learn from folate and methionine cycles.
Topics: Cell Line, Tumor; Epigenesis, Genetic; Folic Acid; Homocysteine; Humans; Methionine; Neoplasms; Neoplastic Stem Cells; Vitamin B 12 | 2020 |
Vitamin B Supplementation and Nutritional Intake of Methyl Donors in Patients with Chronic Kidney Disease: A Critical Review of the Impact on Epigenetic Machinery.
Topics: Betaine; Cardiovascular Diseases; Choline; Dietary Supplements; DNA Methylation; Eating; Epigenesis, Genetic; Folic Acid; Humans; Hyperhomocysteinemia; Kidney Failure, Chronic; Methionine; Nutritional Physiological Phenomena; Renal Insufficiency, Chronic; Uremia; Vitamin B 12; Vitamin B 6 | 2020 |
Vitamin B6, vitamin B12 and methionine and risk of pancreatic cancer: a meta-analysis.
Topics: Diet; Folic Acid; Humans; Methionine; Pancreatic Neoplasms; Risk Factors; Vitamin B 12; Vitamin B 6 | 2020 |
Methionine dependence in tumor cells: The potential role of cobalamin and MMACHC.
Topics: DNA Methylation; Genomics; Humans; Methionine; Neoplasms; Oxidoreductases; Sequence Analysis, RNA; Vitamin B 12 | 2021 |
Methylenetetrahydrofolate (MTHFR), the One-Carbon Cycle, and Cardiovascular Risks.
Topics: Carbon Cycle; Cardiovascular Diseases; Diabetes Mellitus; Epigenesis, Genetic; Female; Folic Acid; Heart Disease Risk Factors; Homocysteine; Humans; Inflammation; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Polymorphism, Genetic; Vascular Diseases; Vitamin B 12 | 2021 |
COVID-19 and One-Carbon Metabolism.
Topics: Carbon; COVID-19; Folic Acid; Homocysteine; Humans; Methionine; Post-Acute COVID-19 Syndrome; SARS-CoV-2; Vitamin B 12 | 2022 |
Folate-Methionine Cycle Disruptions in ASD Patients and Possible Interventions: A Systematic Review.
Topics: Autism Spectrum Disorder; Child; Dietary Supplements; Folic Acid; Humans; Methionine; Racemethionine; Vitamin B 12 | 2023 |
Clinical Pathobiochemistry of Vitamin B
Topics: Antioxidants; Diabetes Mellitus; Diabetic Neuropathies; Humans; Methionine; Vitamin B 12; Vitamin B 12 Deficiency; Vitamins | 2023 |
The role of methionine synthases in fungal metabolism and virulence.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Antifungal Agents; Humans; Methionine; Tetrahydrofolates; Virulence; Vitamin B 12 | 2023 |
23 trial(s) available for methionine and vitamin b 12
| Article | Year |
|---|---|
[Treatment of neuroautonomic symptoms of cervical syndromes with Dimaestad].
Topics: Adenosine Triphosphate; Amino Alcohols; Brachial Plexus Neuritis; Clinical Trials as Topic; Drug Combinations; Female; Humans; Male; Methionine; Middle Aged; Vitamin B 12; Whiplash Injuries | 1972 |
Treatment of hyperhomocysteinemia in renal transplant recipients. A randomized, placebo-controlled trial.
Topics: Drug Therapy, Combination; Factor Analysis, Statistical; Folic Acid; Homocysteine; Humans; Kidney Transplantation; Methionine; Pyridoxine; Risk Factors; Vitamin B 12 | 1997 |
Correlation between total homocysteine and cyclosporine concentrations in cardiac transplant recipients.
Topics: Adult; Aged; Cyclosporine; Female; Folic Acid; Heart Transplantation; Homocysteine; Humans; Immunosuppressive Agents; Kidney Glomerulus; Linear Models; Male; Metabolic Diseases; Methionine; Middle Aged; Postoperative Complications; Vitamin B 12 | 1998 |
Low-dose folic acid supplementation does not influence plasma methionine concentrations in young non-pregnant women.
Topics: Adolescent; Adult; Contraceptives, Oral; Erythrocytes; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Methionine; Vitamin B 12 | 1999 |
Fluctuations in dietary methionine intake do not alter plasma homocysteine concentration in healthy men.
Topics: Adult; Body Mass Index; Diet; Diet Records; Energy Intake; Homocysteine; Humans; Male; Methionine; Vitamin B 12 | 2000 |
Efficacy of methylcobalamin on lowering total homocysteine plasma concentrations in haemodialysis patients receiving high-dose folic acid supplementation.
Topics: Adult; Aged; Dose-Response Relationship, Drug; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Osmolar Concentration; Renal Dialysis; Vitamin B 12; Vitamin B 6 | 2002 |
Post-methionine-load hyperhomocysteinemia and increased lipoprotein(a) are associated with renal metabolic dysfunction: a hypothesis.
Topics: Apolipoproteins A; Creatinine; Folic Acid; Humans; Hyperhomocysteinemia; Kidney Diseases; Lipoprotein(a); Male; Methionine; Middle Aged; Vitamin B 12 | 2002 |
The effect of B-vitamins on hyperhomocysteinemia in patients on antiepileptic drugs.
Topics: Adult; Anticonvulsants; Cholesterol; Cholesterol, HDL; Cholesterol, LDL; Epilepsy; Fasting; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Intercellular Adhesion Molecule-1; Male; Malondialdehyde; Methionine; Middle Aged; Pyridoxic Acid; Riboflavin; Selectins; Vascular Cell Adhesion Molecule-1; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2002 |
Effect of protein and methionine intakes on plasma homocysteine concentrations: a 6-mo randomized controlled trial in overweight subjects.
Topics: Adolescent; Adult; Analysis of Variance; Body Weight; Diet; Diet, Protein-Restricted; Dietary Proteins; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Obesity; Vitamin B 12 | 2002 |
Plasma total homocysteine in Mexican rural and urban women fed typical model diets.
Topics: Adolescent; Adult; Cross-Over Studies; Diet; Fasting; Female; Folic Acid; Homocysteine; Humans; Methionine; Mexico; Middle Aged; Nutritional Status; Reference Values; Rural Health; Urban Health; Vitamin B 12 | 2003 |
Betaine as a determinant of postmethionine load total plasma homocysteine before and after B-vitamin supplementation.
Topics: Administration, Oral; Adult; Age Factors; Aged; Aged, 80 and over; Betaine; Choline; Coronary Angiography; Dietary Supplements; Drug Administration Schedule; Fasting; Female; Folic Acid; Follow-Up Studies; Homocysteine; Humans; Male; Methionine; Methyltransferases; Middle Aged; Sarcosine; Sex Factors; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2004 |
Breakfast cereal fortified with folic acid, vitamin B-6, and vitamin B-12 increases vitamin concentrations and reduces homocysteine concentrations: a randomized trial.
Topics: Aged; Aged, 80 and over; Aging; Cardiovascular Diseases; Double-Blind Method; Edible Grain; Female; Folic Acid; Food, Fortified; Homocysteine; Humans; Male; Methionine; Middle Aged; Vitamin B 12; Vitamin B 6 | 2004 |
Changes in basal and postmethionine load concentrations of total homocysteine and cystathionine after B vitamin intervention.
Topics: Administration, Oral; Adult; Aged; Aged, 80 and over; Analysis of Variance; Cardiovascular Diseases; Cystathionine; Double-Blind Method; Drug Synergism; Drug Therapy, Combination; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Male; Methionine; Middle Aged; Norway; Prospective Studies; Vitamin B 12; Vitamin B 6 | 2004 |
Hormone replacement influences homocysteine levels in the methionine-loading test: a randomized placebo controlled trial in postmenopausal women.
Topics: Analysis of Variance; Blood Chemical Analysis; Double-Blind Method; Dydrogesterone; Estradiol; Estrogen Replacement Therapy; Female; Folic Acid; Homocysteine; Humans; Methionine; Middle Aged; Postmenopause; Pyridoxine; Treatment Outcome; Vitamin B 12 | 2004 |
Effect of L-methionine supplementation on plasma homocysteine and other free amino acids: a placebo-controlled double-blind cross-over study.
Topics: Adult; Aged; Amino Acids; Cross-Over Studies; Dietary Supplements; Double-Blind Method; Female; Folic Acid; Homocysteine; Humans; Methionine; Middle Aged; Urinary Tract Infections; Vitamin B 12; Vitamin B 6 | 2005 |
Effects of low- or high-dose hormone therapy on fasting and post-methionine homocysteine levels in postmenopausal women.
Topics: Dose-Response Relationship, Drug; Estradiol; Estrogen Replacement Therapy; Fasting; Female; Folic Acid; Homocysteine; Humans; Methionine; Middle Aged; Norethindrone; Postmenopause; Prospective Studies; Risk Factors; Treatment Outcome; Vitamin B 12 | 2006 |
Folate, vitamin B6, vitamin B12, and methionine intakes and risk of stroke subtypes in male smokers.
Topics: Aged; Feeding Behavior; Finland; Folic Acid; Health Status; Humans; Male; Methionine; Middle Aged; Multivariate Analysis; Nutrition Surveys; Nutritional Status; Prospective Studies; Risk; Risk Assessment; Risk Factors; Smoking; Stroke; Vitamin B 12; Vitamin B 6 | 2008 |
Supplementation with a multivitamin containing 800 microg of folic acid shortens the time to reach the preventive red blood cell folate concentration in healthy women.
Topics: Adolescent; Adult; Diet; Diet Records; Dietary Supplements; Double-Blind Method; Erythrocytes; Female; Folic Acid; Homocysteine; Humans; Methionine; Micronutrients; Neural Tube Defects; Nutritional Status; Reference Values; Riboflavin; Time Factors; Vitamin B 12; Vitamin B 6; Young Adult | 2009 |
Short-term creatine supplementation does not reduce increased homocysteine concentration induced by acute exercise in humans.
Topics: Adolescent; Creatine; Cysteine; Dietary Supplements; Double-Blind Method; Energy Intake; Exercise; Feeding Behavior; Folic Acid; Glycine; Healthy Volunteers; Homocysteine; Humans; Male; Methionine; S-Adenosylmethionine; Soccer; Vitamin B 12 | 2014 |
Randomized, Placebo-Controlled Trial of Methyl B12 for Children with Autism.
Topics: Antioxidants; Autism Spectrum Disorder; Biomarkers; Child; Child, Preschool; Double-Blind Method; Female; Follow-Up Studies; Glutathione; Humans; Male; Methionine; Oxidative Stress; Psychiatric Status Rating Scales; Treatment Outcome; Vitamin B 12 | 2016 |
Effect of combined acetylmethionine, cyanocobalamin and α-lipoic acid on hepatic metabolism in high-yielding dairy cow.
Topics: 3-Hydroxybutyric Acid; Acetylation; Alanine Transaminase; Animals; Aspartate Aminotransferases; Bilirubin; Blood Glucose; Cattle; Cholesterol; Fatty Acids, Nonesterified; Female; Globulins; Lactation; Liver; Methionine; Placebos; Pregnancy; Thioctic Acid; Triglycerides; Urea; Vitamin B 12 | 2016 |
Comparison between two preventive treatments for hyperketonaemia carried out
Topics: 3-Hydroxybutyric Acid; Amino Acids; Animals; Blood Proteins; Cattle; Cattle Diseases; Fatty Acids, Nonesterified; Female; Ketosis; Lactation; Methionine; Monensin; Peripartum Period; Thioctic Acid; Vitamin B 12 | 2021 |
Concentrations of vitamin B12 and folate in maternal serum and fetal fluids, metabolite interrelationships, and hepatic transcript abundance of key folate and methionine cycle genes: the impacts of maternal nutrition during the first 50 d of gestation.
Topics: Animals; Carbon; Cattle; Diet; Female; Folic Acid; Glycine; Liver; Methionine; Pregnancy; Racemethionine; Serine; Vitamin B 12 | 2023 |
628 other study(ies) available for methionine and vitamin b 12
| Article | Year |
|---|---|
Vitamin B12--folate interrelations.
Topics: Anemia, Megaloblastic; DNA; Folic Acid; Folic Acid Deficiency; Formiminoglutamic Acid; Glycine; Homocysteine; Humans; Methionine; Methylmalonyl-CoA Mutase; Nervous System Diseases; Vitamin B 12; Vitamin B 12 Deficiency | 1976 |
Hepatocarcinogenesis by diethylnitrosamine in rats fed high dietary levels of lipotropes.
Topics: Animals; Betaine; Carcinogens; Carcinoma, Hepatocellular; Choline; Diet; Ethanolamines; Folic Acid; Lipotropic Agents; Liver; Liver Neoplasms; Methionine; Methotrexate; Neoplasms, Experimental; Nitrosamines; Organ Size; Phosphatidylcholines; Phosphatidylethanolamines; Rats; Vitamin B 12 | 1975 |
Interaction of methotrexate with lipotropic factors in rat liver.
Topics: Animals; Cholesterol; Choline; Choline Deficiency; Diet; Drug Synergism; Lipotropic Agents; Liver; Male; Methionine; Methotrexate; Phospholipids; Rats; Triglycerides; Vitamin B 12 | 1975 |
5-methyltetrahydrofolate: synthesis and utilization in normal and SV40-transformed BHK-21 cells.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Cell Line; Cell Survival; Cell Transformation, Neoplastic; Cricetinae; Folic Acid; Homocysteine; Kidney; Methionine; Methylenetetrahydrofolate Dehydrogenase (NADP); Simian virus 40; Tetrahydrofolates; Vitamin B 12 | 1977 |
Stereochemical studies of enzymic C-methylations.
Topics: Enzymes; Magnetic Resonance Spectroscopy; Methionine; Methylation; S-Adenosylmethionine; Stereoisomerism; Structure-Activity Relationship; Vitamin B 12 | 1977 |
Interrelationships between Vitamin B12 and folic acid in myelomatosis: cobalamin coenzyme and tetrahydrofolic acid function.
Topics: Adolescent; Adult; Age Factors; Aged; Cobamides; Edetic Acid; Erythrocytes; Female; FIGLU Test; Histidine; Humans; Male; Methionine; Methylmalonic Acid; Middle Aged; Multiple Myeloma; Tetrahydrofolates; Vitamin B 12 | 1978 |
Effect of dietary thyroid powder on urinary excretion of formiminoglutamic acid and methylmalonic acid.
Topics: Animals; Dietary Proteins; Folic Acid; Formiminoglutamic Acid; Glutarates; Histidine; Male; Malonates; Methionine; Methylmalonic Acid; Rats; Thyroid (USP); Thyroid Hormones; Vitamin B 12; Vitamin B 12 Deficiency | 1979 |
[Role of the components in the methylation system in the cobalamin-dependent gentamycin biosynthesis by a Micromonospora purpurea culture].
Topics: Cobalt; Culture Media; Dose-Response Relationship, Drug; Gentamicins; Methionine; Methylation; Micromonospora; Vitamin B 12 | 1979 |
De novo synthesis of methionine in normal and Brugia-infected Aedes aegypti.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Aedes; Animals; Brugia; Cell-Free System; Female; Filarioidea; Homocysteine; Male; Methionine; Molecular Weight; S-Adenosylmethionine; Tetrahydrofolates; Tissue Extracts; Vitamin B 12 | 1979 |
[Influence of composition of the culture media on the in vitro determination of the bacterial sensitivity to sulfonamides, trimethoprim and cotrimoxazole].
Topics: Bacteria; Culture Media; Drug Resistance, Microbial; Methionine; Microbial Sensitivity Tests; Structure-Activity Relationship; Sulfamethoxazole; Sulfonamides; Thymidine; Trimethoprim; Vitamin B 12 | 1979 |
Cobalamins and cobalamin-dependent enzymes in Candida utilis.
Topics: Amino Acid Isomerases; Candida; Cell-Free System; Intramolecular Transferases; Leucine; Methionine; Vitamin B 12 | 1979 |
Studies on biological functions of 5'-methylthioadenosine vitamin B12-replacing effect for Ochromonas malhamensis.
Topics: Adenosine; Animals; Biological Assay; Chromatography, Thin Layer; Crystallization; Dose-Response Relationship, Drug; Eukaryota; Methionine; Nutritional Requirements; Saccharomyces cerevisiae; Sulfides; Vitamin B 12 | 1976 |
[Vitamin B 12 dependent methionine biosynthesis in pseudomonas aeruginosa].
Topics: Cysteine; Homocysteine; Methionine; Methylnitronitrosoguanidine; Mutagens; Pseudomonas aeruginosa; Stereoisomerism; Vitamin B 12 | 1975 |
Inhibition of N5-methyltetrahydrofolate - homocysteine transmethylase by a vitamin B12-antimetabolite.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Antimetabolites; Bacillus cereus; Dose-Response Relationship, Drug; Escherichia coli; Methionine; Methyltransferases; Vitamin B 12 | 1976 |
Studies in neuronal ceroid-lipofuscinosis: leukocyte peroxidase deficiency in a patient with neuronal ceroid-lipofuscinosis (Jansky-Bielschowsky type).
Topics: Ascorbic Acid; Child, Preschool; Humans; In Vitro Techniques; Leukocytes; Lipidoses; Methionine; Peroxidases; Syndrome; Vitamin B 12; Vitamin E | 1977 |
Effect of methionine on the metabolism of formate and histidine by rats fed folate/vitamin B-12-methionine-deficient diet.
Topics: Animals; Carbon Dioxide; Catalase; Folic Acid; Folic Acid Deficiency; Formates; Formiminoglutamic Acid; Histidine; Liver; Male; Methionine; Oxidation-Reduction; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1977 |
Uptake and metabolism of [3H]folate by normal and by vitamin B-12- and methionine-deficient rats.
Topics: Animals; Folic Acid; Kidney; Liver; Male; Methionine; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1977 |
Minimal requirements in defined media for improved growth of some radio-resistant pink tetracocci.
Topics: Culture Media; Food Microbiology; Hemin; Hydroxamic Acids; Iron; Methionine; Micrococcus; Mutation; Species Specificity; Ultraviolet Rays; Vitamin B 12 | 1977 |
[Mechanism of anemia in selenium poisoning rats. (II). Behavior of vitamin B12 and mechanism of anemia by selenium dosing (author's transl)].
Topics: Anemia; Animals; Female; Folic Acid; In Vitro Techniques; Liver; Methionine; Rats; Selenium; Tissue Distribution; Vitamin B 12 | 1977 |
[Changes in the end part of the ECG ventricular complex under the effect of digitalis preparations and their combination with metabolic preparations].
Topics: Adenosine Triphosphate; Digitalis Glycosides; Drug Therapy, Combination; Electrocardiography; Folic Acid; Heart; Heart Valve Diseases; Humans; Methionine; Orotic Acid; Pantothenic Acid; Vitamin B 12 | 1977 |
[Effect of treatment with cardiac glycosides and biologically active substances on the state of the lesser circulation according to the electrokymographic data].
Topics: Adenosine Triphosphate; Cardiac Glycosides; Drug Therapy, Combination; Electrokymography; Follow-Up Studies; Humans; Inosine; Methionine; Pulmonary Circulation; Rheumatic Heart Disease; Vitamin B 12 | 1977 |
Studies on metabolic role of 5'-Methylthioadenosine in Ochromonas malhamensis and other microorganisms.
Topics: Adenosine; Cell Membrane Permeability; Eukaryota; Methionine; N-Glycosyl Hydrolases; Ribose; S-Adenosylmethionine; Vitamin B 12 | 1976 |
Regulation of methionine synthetase in L-cells by vitamin B-12, folate and methionine.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Culture Media; Cycloheximide; Folic Acid; Kinetics; L Cells; Methionine; Methyltransferases; Vitamin B 12 | 1976 |
Uptake of folate and its analogue-amethopterin by mouse L-cells.
Topics: Animals; Cells, Cultured; Chloromercuribenzoates; Cycloheximide; Dactinomycin; Folic Acid; Kinetics; L Cells; Methionine; Methotrexate; Mice; Vitamin B 12 | 1976 |
Intestinal function in chronic alcoholism.
Topics: Alcohol Oxidoreductases; Alcoholism; Chronic Disease; Diet Therapy; Digestive System; Dose-Response Relationship, Drug; Ethanol; Folic Acid; Gastrointestinal Motility; Humans; Intestinal Absorption; Intestines; Malabsorption Syndromes; Methionine; Nutrition Disorders; Thiamine; Vitamin B 12; Xylose | 1975 |
Pancreatic disease.
Topics: Acute Disease; Alcoholism; Antacids; Ascites; Carcinoembryonic Antigen; Cholangiography; Chronic Disease; Cysts; Diabetes Mellitus; Diet Therapy; Endoscopy; Gastrointestinal Hemorrhage; Humans; Metabolic Diseases; Methionine; Pancreatic Diseases; Pancreatic Juice; Pancreatic Neoplasms; Pancreatin; Pancreatitis; Prognosis; Selenium; Ultrasonics; Vitamin B 12 | 1975 |
Evidence for the B12-dependent enzyme ethanolamine deaminase in Salmonella.
Topics: Ammonia-Lyases; Ethanolamines; Methionine; Mutation; Salmonella typhimurium; Vitamin B 12 | 1975 |
Some problems concerning the determination of different corrinoids by the plate method with Escherichia coli 113-3.
Topics: Biological Assay; Escherichia coli; Methionine; Spectrophotometry; Vitamin B 12 | 1975 |
Malabsorption of essential amino acids in tropical sprue.
Topics: Administration, Oral; Adult; Aged; Amino Acids, Essential; Fats; Feces; Folic Acid; Humans; Intestinal Absorption; Isoleucine; Leucine; Lysine; Methionine; Phenylalanine; Serum Albumin; Sprue, Tropical; Tetracycline; Threonine; Valine; Vitamin B 12; Xylose | 1975 |
Folate-responsive homocystinuria and "schizophrenia". A defect in methylation due to deficient 5,10-methylenetetrahydrofolate reductase activity.
Topics: Adolescent; Alcohol Oxidoreductases; Diagnosis, Differential; Female; Folic Acid; Homocysteine; Homocystine; Homocystinuria; Humans; Methionine; Methylation; Schizophrenia; Tetrahydrofolates; Vitamin B 12 | 1975 |
[The behavior of glucose, thyroxine, vitamin A, beta-carotene, methionine, and vitamin B12 in the blood of primiparous cattle during puerperium].
Topics: Animals; Blood Glucose; Carotenoids; Cattle; Female; Labor, Obstetric; Methionine; Parity; Postpartum Period; Pregnancy; Thyroxine; Vitamin A; Vitamin B 12 | 1975 |
Vitamin B12 production by a methanol-utilizing bacterium.
Topics: Amino Acids; Bacteria; Culture Media; Methanol; Methionine; Soil Microbiology; Stereoisomerism; Vitamin B 12 | 1975 |
The relationships between vitamin B12 and folic acid and the effect of methionine on folate metabolism.
Topics: Animals; Biological Transport; Diet; Folic Acid; Formiminoglutamic Acid; Histidine; Liver; Male; Methionine; Perfusion; Rats; S-Adenosylmethionine; Vitamin B 12; Vitamin B 12 Deficiency | 1975 |
Folate-dependent enzymes in cultured Chinese hamster ovary cells: induction of 5-methyltetrahydrofolate homocysteine cobalamin methyltransferase by folate and methionine.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Division; Cell Line; Culture Media; Cycloheximide; Enzyme Induction; Folic Acid; Homocysteine; Kinetics; Methionine; Methyltransferases; Thymidylate Synthase; Time Factors; Vitamin B 12 | 1975 |
The anti-folate effect of methionine on bone marrow of normal and vitamin B12 deficient rats.
Topics: Animals; Bone Marrow; Deoxyuridine; DNA; Folic Acid; Folic Acid Antagonists; Homocysteine; Liver; Male; Methionine; Methionine Adenosyltransferase; Rats; Thymidine; Vitamin B 12; Vitamin B 12 Deficiency | 1975 |
[The treatment of alcoholic delerium tremors and acute attacks of alcoholic toxic hepatitis].
Topics: Adenosine Monophosphate; Alcohol Withdrawal Delirium; Alcoholism; Chemical and Drug Induced Liver Injury; Chlormethiazole; Deanol; Drug Combinations; Humans; Methionine; Psychoses, Alcoholic; Vitamin B 12 | 1975 |
Metabolic changes in golden hamsters fed vitamin B-12-deficient diets.
Topics: Animals; Body Weight; Cobalt; Cricetinae; Erythrocyte Count; Glucosephosphate Dehydrogenase; Glutathione; Glutathione Reductase; Hematocrit; Kidney; Liver; Male; Methionine; Organ Size; Vitamin B 12; Vitamin B 12 Deficiency | 1976 |
Effect of vitamin B12 and folate on biosynthesis of methionine from homocysteine in the nematode Caenorhabditis briggsae.
Topics: Animals; Choline; Folic Acid; Homocysteine; Methionine; Nematoda; Vitamin B 12 | 1976 |
The effects of dietary histidine, methionine and homocystine on vitamin B12 and folate levels in rat liver.
Topics: Animals; Body Weight; Female; Folic Acid; Histidine; Homocystine; Liver; Male; Methionine; Proteins; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1976 |
Comparison of cobalamin-independent and cobalamin-dependent methionine synthases from Escherichia coli: two solutions to the same chemical problem.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Alkylation; Amino Acid Sequence; Base Sequence; Cloning, Molecular; Cysteine; Escherichia coli; Homocysteine; Iodoacetamide; Methionine; Molecular Sequence Data; Recombinant Proteins; Restriction Mapping; Tetrahydrofolates; Tosyllysine Chloromethyl Ketone; Tosylphenylalanyl Chloromethyl Ketone; Trypsin; Vitamin B 12 | 1992 |
Translation rates of isolated liver mitochondria under conditions of hepatic mitochondrial proliferation.
Topics: Animals; Clofibrate; DNA, Mitochondrial; Hydroxocobalamin; Kinetics; Leucine; Male; Methionine; Methylmalonyl-CoA Mutase; Mitochondria, Liver; Protein Biosynthesis; Rats; Rats, Sprague-Dawley; Vitamin B 12 | 1992 |
Role of the MetR regulatory system in vitamin B12-mediated repression of the Salmonella typhimurium metE gene.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacterial Proteins; Bacteriophage lambda; Enzyme Repression; Escherichia coli Proteins; Methionine; Methyltransferases; Plasmids; Recombinant Fusion Proteins; Salmonella typhimurium; Trans-Activators; Vitamin B 12 | 1992 |
Methionine in the treatment of nitrous-oxide-induced neuropathy and myeloneuropathy.
Topics: Adult; Anemia, Macrocytic; Female; Humans; Male; Methionine; Nervous System Diseases; Neuromuscular Diseases; Nitrous Oxide; Sensation Disorders; Vitamin B 12 | 1992 |
[Inherited metabolic disorders of the transsulfuration pathway].
Topics: Amino Acid Metabolism, Inborn Errors; Cystathionine; Cystathionine beta-Synthase; Homocystinuria; Humans; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Oxidoreductases Acting on CH-NH Group Donors; Vitamin B 12 | 1992 |
Plasma homocysteine in women on oral oestrogen-containing contraceptives and in men with oestrogen-treated prostatic carcinoma.
Topics: Adolescent; Adult; Aged; Cardiovascular Diseases; Contraceptives, Oral, Hormonal; Estradiol Congeners; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Prostatic Neoplasms; Risk Factors; Vitamin B 12 | 1992 |
Methionine auxotrophy in inborn errors of cobalamin metabolism.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Division; Cell Line; Cobamides; Fibroblasts; Homocysteine; Humans; Metabolism, Inborn Errors; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1992 |
Methyl groups in carcinogenesis: effects on DNA methylation and gene expression.
Topics: Animals; Choline; DNA; Folic Acid; Food, Formulated; Gene Expression Regulation, Neoplastic; Genes, fos; Genes, myc; Genes, ras; Liver; Male; Methionine; Methylation; Rats; Rats, Inbred F344; RNA, Messenger; RNA, Transfer; S-Adenosylhomocysteine; S-Adenosylmethionine; Vitamin B 12 | 1992 |
Plasma homocysteine before and after methionine loading with regard to age, gender, and menopausal status.
Topics: Adult; Aged; Aging; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Menopause; Methionine; Middle Aged; Pyridoxal Phosphate; Sex Characteristics; Vascular Diseases; Vitamin B 12 | 1992 |
Inhibition of cobalamin-dependent enzymes by cobalamin analogues in rats.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Folic Acid; Homocysteine; Male; Methionine; Methylmalonic Acid; Methylmalonyl-CoA Mutase; Nitrous Oxide; Rats; Rats, Inbred Strains; Structure-Activity Relationship; Succinates; Succinic Acid; Vitamin B 12 | 1991 |
Role of the metF and metJ genes on the vitamin B12 regulation of methionine gene expression: involvement of N5-methyltetrahydrofolic acid.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Enzyme Repression; Escherichia coli; Gene Expression Regulation, Bacterial; Genes, Bacterial; Methionine; Tetrahydrofolates; Trimethoprim; Vitamin B 12 | 1992 |
Synthesis and secretion of a cobalamin-binding protein by HT 29 cell line.
Topics: Blotting, Western; Chromatography, Affinity; Colonic Neoplasms; Cycloheximide; Electrophoresis, Polyacrylamide Gel; Humans; Methionine; Transcobalamins; Tumor Cells, Cultured; Vitamin B 12 | 1991 |
Changes in cobalamin metabolism are associated with the altered methionine auxotrophy of highly growth autonomous human melanoma cells.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Division; Homocysteine; Humans; Melanoma; Methionine; Phenotype; Tetrahydrofolates; Tumor Cells, Cultured; Vitamin B 12 | 1991 |
Functional expression of transcobalamin II cDNA in Xenopus laevis oocytes.
Topics: Animals; Cloning, Molecular; DNA; Female; Gene Expression; Humans; Methionine; Oocytes; Recombinant Proteins; RNA, Messenger; Transcobalamins; Transcription, Genetic; Vitamin B 12; Xenopus laevis | 1991 |
Inhibition of vitamin B12-dependent methionine biosynthesis by chloroform and carbon tetrachloride.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bromotrichloromethane; Carbon Tetrachloride; Chloroform; Escherichia coli; Methionine; Nitrous Oxide; Trichloroethanes; Vitamin B 12 | 1991 |
Branched-chain amino acids overcome cycloleucine growth inhibition in B12 and non-B12-requiring microorganisms.
Topics: Amino Acids; Animals; Cycloleucine; Escherichia coli; Euglena gracilis; Eukaryota; Growth Inhibitors; Methionine; Vitamin B 12 | 1991 |
Plasma homocysteine in venous thromboembolism.
Topics: Adult; Creatinine; Cystathionine beta-Synthase; Fasting; Female; Folic Acid; Genetic Carrier Screening; Genotype; Homocysteine; Homocystinuria; Humans; Male; Methionine; Thromboembolism; Vitamin B 12 | 1991 |
Expression of cobalamin transport proteins and cobalamin transcytosis by colon adenocarcinoma cells.
Topics: Adenocarcinoma; Biological Transport; Cell Line; Colonic Neoplasms; Electrophoresis, Polyacrylamide Gel; Humans; Intrinsic Factor; Kinetics; Methionine; Molecular Weight; Sulfur Radioisotopes; Transcobalamins; Vitamin B 12 | 1991 |
Monitoring cobalamin inactivation during nitrous oxide anesthesia by determination of homocysteine and folate in plasma and urine.
Topics: Adult; Aged; Aged, 80 and over; Anesthesia, Inhalation; Anesthesia, Intravenous; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Nitrous Oxide; Postoperative Period; Vitamin B 12 | 1991 |
Inhibition of vitamin B12-dependent microbial growth by nitrous oxide.
Topics: Escherichia coli; Methionine; Nitrous Oxide; Sulfanilamide; Sulfanilamides; Vitamin B 12 | 1991 |
Maternal vegan diet causing a serious infantile neurological disorder due to vitamin B12 deficiency.
Topics: Adult; Breast Feeding; Diet, Vegetarian; Female; Homocysteine; Humans; Infant; Methionine; Methylmalonic Acid; Milk, Human; Nervous System Diseases; Vitamin B 12; Vitamin B 12 Deficiency | 1991 |
Interrelationship between serum concentrations of methionine, vitamin B12 and folate.
Topics: Adult; Folic Acid; Folic Acid Deficiency; Humans; Methionine; Nutritional Requirements; Nutritional Status; Vitamin B 12; Vitamin B 12 Deficiency | 1990 |
Endothelial cells from human umbilical vein secrete functional transcobalamin II.
Topics: Cells, Cultured; Cycloheximide; Edetic Acid; Endothelium, Vascular; Humans; Immune Sera; Kinetics; Methionine; Radioimmunoassay; Transcobalamins; Umbilical Veins; Vitamin B 12 | 1989 |
The nature of the defect in cobalamin G mutation.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Megaloblastic; Cell Division; Cells, Cultured; Female; Fibroblasts; Humans; Infant; Male; Methionine; Mutation; S-Adenosylmethionine; Transcobalamins; Vitamin B 12 | 1989 |
Effect of growth conditions on production of violacein by Chromobacterium violaceum (BB-78 strain).
Topics: Chromobacterium; Culture Media; Hydrogen-Ion Concentration; Indoles; Methionine; Trypanocidal Agents; Tryptophan; Vitamin B 12 | 1989 |
Role of homocysteine in metR-mediated activation of the metE and metH genes in Salmonella typhimurium and Escherichia coli.
Topics: Escherichia coli; Gene Expression Regulation; Genes, Bacterial; Homocysteine; Methionine; Methyltransferases; Salmonella typhimurium; Transcription, Genetic; Vitamin B 12 | 1989 |
Oxidation of 5-methyltetrahydrofolate in cobalamin-inactivated rats.
Topics: Animals; Formyltetrahydrofolates; Methionine; Oxidation-Reduction; Rats; Rats, Inbred Strains; S-Adenosylmethionine; Tetrahydrofolates; Vitamin B 12 | 1989 |
Effects of nitrous oxide inactivation of vitamin B12 and of methionine on folate coenzyme metabolism in rat liver, kidney, brain, small intestine and bone marrow.
Topics: Animals; Bone Marrow; Brain; Folic Acid; Intestine, Small; Kidney; Liver; Male; Methionine; Nitrous Oxide; Organ Specificity; Rats; Rats, Inbred Strains; S-Adenosylhomocysteine; S-Adenosylmethionine; Vitamin B 12 | 1989 |
Cobalamin inactivation decreases purine and methionine synthesis in cultured lymphoblasts.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Folic Acid; Humans; Lymphocytes; Methionine; Methylmalonyl-CoA Mutase; Nitrous Oxide; Purines; Serine; Vitamin B 12 | 1985 |
Perturbation of methionine metabolism in sheep with nitrous-oxide-induced inactivation of cobalamin.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Betaine-Homocysteine S-Methyltransferase; Brain; Formiminoglutamic Acid; Homocystine; Liver; Male; Methionine; Methylmalonyl-CoA Mutase; Methyltransferases; Myocardium; Nitrous Oxide; Orchiectomy; S-Adenosylmethionine; Sheep; Vitamin B 12 | 1986 |
Altered methionine metabolism in metastatic variants of a human melanoma cell line.
Topics: Cell Division; Culture Media; Homocysteine; Humans; Melanoma; Methionine; Neoplasm Metastasis; S-Adenosylmethionine; Tumor Cells, Cultured; Vitamin B 12 | 1989 |
Muscle creatine content in rats given repeated large doses of nicotinamide: effects of dietary methionine, choline, carnitine, and other supplements.
Topics: Animals; Carnitine; Choline; Creatine; Diet; Folic Acid; Food, Fortified; Histidine; Male; Methionine; Muscles; Niacinamide; Rats; Rats, Inbred Strains; Vitamin B 12 | 1986 |
The metH gene from Salmonella typhimurium LT2: cloning and initial characterization.
Topics: Cloning, Molecular; DNA Restriction Enzymes; Genes; Genes, Bacterial; Homocysteine S-Methyltransferase; Methionine; Methyltransferases; Plasmids; Salmonella typhimurium; Species Specificity; Transcription, Genetic; Vitamin B 12 | 1986 |
Cobalamin inactivation decreases purine and methionine synthesis in cultured human lymphoblasts.
Topics: Folic Acid; Homocysteine; Humans; Lymphocytes; Methionine; Nitrous Oxide; Oxidation-Reduction; Purines; Serine; Vitamin B 12 | 1986 |
Regulation of the metR gene of Salmonella typhimurium.
Topics: beta-Galactosidase; Cloning, Molecular; DNA, Recombinant; Gene Expression Regulation; Genes, Bacterial; Genes, Regulator; Homocysteine; Lysogeny; Methionine; Mutation; Salmonella typhimurium; Vitamin B 12 | 1987 |
The role of transcobalamin II in the methionine dependency of human lymphocytes.
Topics: Cells, Cultured; Homocysteine; Humans; Lymphocyte Activation; Lymphocytes; Methionine; Transcobalamins; Vitamin B 12 | 1988 |
Genetic heterogeneity among patients with methylcobalamin deficiency. Definition of two complementation groups, cblE and cblG.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Macrocytic; Anemia, Megaloblastic; Cells, Cultured; Fibroblasts; Genetic Complementation Test; Homocystinuria; Humans; Methionine; Mutation; Vitamin B 12; Vitamin B 12 Deficiency | 1988 |
Homocysteine and myocardial infarction.
Topics: Cystathionine beta-Synthase; Folic Acid; Heterozygote; Homocystine; Humans; Male; Methionine; Middle Aged; Myocardial Infarction; Retrospective Studies; Risk Factors; Vitamin B 12 | 1988 |
Esophageal cancer: vitamin and lipotrope deficiencies in an at-risk South African population.
Topics: Avitaminosis; Esophageal Neoplasms; Female; Folic Acid; Humans; Male; Methionine; Nutritional Status; Risk Factors; South Africa; Vitamin A; Vitamin B 12; Vitamin E | 1987 |
Critical review of cobalamin-folate interrelations.
Topics: 5,10-Methylenetetrahydrofolate Reductase (FADH2); Alcohol Oxidoreductases; Folic Acid; Homocystine; Humans; Infant; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Vitamin B 12 | 1986 |
Control of metF gene expression in maxicell preparations of Escherichia coli K-12: reversible action of the metJ protein and effect of vitamin B12.
Topics: 5,10-Methylenetetrahydrofolate Reductase (FADH2); Bacterial Proteins; Escherichia coli; Gene Expression Regulation; Methionine; Oxidoreductases; Transcription, Genetic; Vitamin B 12 | 1986 |
Methionine dependency of cultured human lymphocytes.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Cycle; Cell Line; Cells, Cultured; Culture Media; Humans; Lymphocyte Activation; Lymphocytes; Methionine; Transcobalamins; Vitamin B 12 | 1986 |
[An explanation of the metabolic relation of vitamin B12, folates and methionine using oxidative transmethylase].
Topics: Animals; Folic Acid; Humans; Methionine; Models, Chemical; Tetrahydrofolates; Vitamin B 12 | 1986 |
The response of male broiler chicks to a corn-soy diet supplemented with L-methionine, L-cystine, choline, sulfate, and vitamin B12.
Topics: Animal Feed; Animals; Body Weight; Chickens; Choline; Cystine; Diet; Glycine max; Male; Methionine; Sulfates; Vitamin B 12; Zea mays | 1986 |
Vitamin B12 responsive homocystinuria and megaloblastic anemia: heterogeneity in methylcobalamin deficiency.
Topics: Anemia, Macrocytic; Anemia, Megaloblastic; Cells, Cultured; Fibroblasts; Homocysteine; Homocystinuria; Humans; Infant; Male; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1987 |
Effect of cobalamin inactivation on folate-dependent transformylases involved in purine synthesis in rats.
Topics: Acyltransferases; Adenosine; Animals; Deoxyadenosines; Hydroxymethyl and Formyl Transferases; In Vitro Techniques; Liver; Male; Methionine; Nitrous Oxide; Phosphoribosylaminoimidazolecarboxamide Formyltransferase; Phosphoribosylglycinamide Formyltransferase; Purines; Rats; Rats, Inbred Strains; Thionucleosides; Vitamin B 12 | 1985 |
Role of S-adenosylmethionine in DNA synthesis and haemopoiesis.
Topics: Bone Marrow; Deoxyuridine; DNA Replication; Hematopoiesis; Humans; Methionine; Nitrous Oxide; S-Adenosylmethionine; Thymidine; Vitamin B 12 | 1985 |
A comparison of the response of woodchucks and rats to variations in dietary lipotrope and lipid content.
Topics: Animals; Blood Cell Count; Body Weight; Choline; Diet; Dietary Fats; Folic Acid; Liver; Liver Function Tests; Male; Marmota; Methionine; Organ Size; Rats; Rats, Inbred F344; Sciuridae; Vitamin B 12 | 1985 |
Effects of dietary supplementation with ethoxyquin, magnesium oxide, methionine hydroxy analog, and B vitamins on tansy ragwort (Senecio jacobaea) toxicosis in beef cattle.
Topics: Animals; Cattle; Cattle Diseases; Disease Susceptibility; Ethoxyquin; Magnesium Oxide; Methionine; Plant Poisoning; Pyridoxine; Vitamin B 12 | 1985 |
Role of folate dependent transformylases in synthesis of purine in bone marrow of man and in bone marrow and liver of rats.
Topics: Acyltransferases; Adenosine; Anemia, Megaloblastic; Animals; Bone Marrow; Deoxyadenosines; Humans; Hydroxymethyl and Formyl Transferases; Liver; Male; Methionine; Nitrous Oxide; Phosphoribosylaminoimidazolecarboxamide Formyltransferase; Phosphoribosylglycinamide Formyltransferase; Purines; Rats; Rats, Inbred Strains; Thionucleosides; Vitamin B 12; Vitamin B 12 Deficiency | 1985 |
[Treatment of patients with chronic liver diseases with a hepatotrophic preparation].
Topics: Bilirubin; Cholinesterases; Chronic Disease; Folic Acid; gamma-Globulins; Hepatitis; Humans; Liver Cirrhosis; Methionine; Niacinamide; Nucleosides; Riboflavin; Serum Albumin; Vitamin B 12 | 1971 |
Folate deficiency and formiminoglutamic acid excretion during chronic diethylnitrosamine administration to rats.
Topics: Animals; Betaine; Carcinogens; Choline; Diet; Drinking; FIGLU Test; Folic Acid; Folic Acid Deficiency; Glutamates; Histidine; Liver; Male; Methionine; Nitrosamines; Rats; Stimulation, Chemical; Transferases; Urocanate Hydratase; Vitamin B 12 | 1973 |
A lipotrope-dependent increase of histidase and urocanase in the livers of choline-deficient rats and in the Reuber H-35 transplanted hepatoma.
Topics: Ammonia-Lyases; Animals; Carcinoma, Hepatocellular; Choline; Choline Deficiency; Diet; Histidine Ammonia-Lyase; Hydro-Lyases; Liver; Liver Neoplasms; Male; Methionine; Neoplasm Transplantation; Neoplasms, Experimental; Rats; Time Factors; Urocanate Hydratase; Vitamin B 12 | 1973 |
Folic acid metabolism in vitamin B12-deficient sheep. Effects of injected methionine on methotrexate transport and the activity of enzymes associated with folate metabolism in liver.
Topics: Animals; Biological Transport; Carbon Radioisotopes; Female; Folic Acid; Homocysteine; Liver; Membranes; Methionine; Methotrexate; Methyltransferases; NAD; NADP; S-Adenosylmethionine; Serum Albumin, Bovine; Sheep; Tetrahydrofolate Dehydrogenase; Tritium; Vitamin B 12; Vitamin B 12 Deficiency | 1974 |
Hepatorenal lesions in rats fed a low lipotrope diet and exposed to aflatoxin.
Topics: Aflatoxins; Animals; Autoradiography; Body Weight; Choline; Diet; DNA; Hyperplasia; Kidney; Lipids; Lipotropic Agents; Liver; Liver Neoplasms; Male; Methionine; Rats; Thymidine; Tritium; Vitamin B 12 | 1968 |
Effects of maternal dietary lipotropes on prenatal and neonatal rats.
Topics: Animal Nutritional Physiological Phenomena; Animals; Animals, Newborn; Choline; Female; Lipotropic Agents; Maternal-Fetal Exchange; Metabolism, Inborn Errors; Methionine; Nutritional Requirements; Pregnancy; Pregnancy, Animal; Prenatal Care; Protein Deficiency; Rats; Vitamin B 12 | 1970 |
Transport of vitamin B 12 in Escherichia coli. Location and properties of the initial B 12 -binding site.
Topics: Binding Sites; Binding, Competitive; Biological Transport; Cations, Divalent; Chromatography, Gel; Cobalt Isotopes; Cobamides; Edetic Acid; Escherichia coli; Kinetics; Membranes; Methionine; Mutation; Osmosis; Receptors, Drug; Solubility; Species Specificity; Vitamin B 12 | 1973 |
Methylmalonic acid excretion studies.
Topics: Administration, Oral; Anemia, Pernicious; Biological Assay; Chromatography, Gas; Erythrocyte Count; Folic Acid Deficiency; Humans; Isoleucine; Lacticaseibacillus casei; Lactobacillus; Leucine; Liver Cirrhosis; Malonates; Methionine; Stimulation, Chemical; Valine; Vitamin B 12; Vitamin B 12 Deficiency | 1973 |
Correlation between the level of vitamin-B12-dependent methionine synthetase and intracellular concentration of vitamin B12 in some bacteria.
Topics: Apoenzymes; Bacterial Proteins; Carbon Radioisotopes; Chloramphenicol; Chromatium; Cobalt; Escherichia coli; Homocysteine; Methionine; Methyltransferases; Rhodospirillum rubrum; Streptomyces; Tetracycline; Tetrahydrofolates; Vitamin B 12 | 1974 |
[On the level of free methionine and B 12 of human blood serum].
Topics: Adolescent; Adult; Aged; Child; Humans; Methionine; Middle Aged; Vitamin B 12 | 1966 |
[Considerations on the clinical use of a new association of drugs in the treatment of hepatopathies].
Topics: Adolescent; Adult; Aged; Humans; Leucovorin; Liver Diseases; Methionine; Middle Aged; Niacinamide; Nucleosides; Vitamin B 12 | 1968 |
[A new hepatoprotective preparation. Biochemical aspects and clinical studies].
Topics: Adult; Aged; Animals; Biopsy; Drug Synergism; Female; Folic Acid; Humans; Liver; Liver Diseases; Male; Methionine; Mice; Middle Aged; Niacinamide; Nucleosides; Nucleotides; Rats; Vitamin B 12 | 1968 |
Aminoacid and vitamin body distribution: an additional use of the autographic method.
Topics: Animals; Biological Assay; Escherichia coli; Guinea Pigs; Methionine; Methods; Tetrazolium Salts; Thiamine; Vitamin B 12 | 1971 |
[Behavior of Shigella flexneri F6S and certain of its mutants in synthetic medium].
Topics: Amino Acids; Culture Media; Cysteine; Cystine; Folic Acid; Genetics, Microbial; Growth Substances; Methionine; Mutation; Niacinamide; Serine; Shigella; Temperature; Thiamine; Vitamin B 12 | 1971 |
[Clinico-therapeutic evaluation of a new drug combination with hepatotrophic effect].
Topics: Adenine; Adult; Child; Drug Combinations; Folic Acid; Hepatitis A; Humans; Hydroxocobalamin; Inosine; Liver Diseases; Methionine; Middle Aged; Niacinamide; Nucleosides; Riboflavin; Vitamin B 12 | 1972 |
Effect of diet on foot pad dermatitis in poults.
Topics: Aminobutyrates; Animal Feed; Animals; Betaine; Biotin; Body Weight; Chickens; Cystine; Diet; Ethers; Female; Foot Dermatoses; Glycine max; Homocystine; Male; Methionine; Niacinamide; Poultry Diseases; Sulfates; Vitamin B 12; Vitamin E | 1974 |
Influence of vitamin B12 and methionine on levels of folic acid compounds and folate enzymes in rat liver.
Topics: Animals; Biological Assay; Female; Folic Acid; Liver; Methionine; NAD; Oxidoreductases; Pregnancy; Pregnancy, Animal; Rats; Transferases; Vitamin B 12 | 1967 |
Methionine biosynthesis in Ochromonas malhamensis.
Topics: Adenosine Triphosphate; Alcohols; Carbon Isotopes; Cyanides; Enzyme Activation; Eukaryota; Flavin Mononucleotide; Folic Acid; Homocysteine; Kinetics; Light; Magnesium; Methionine; NAD; Oxygen; Sulfur; Transferases; Vitamin B 12 | 1969 |
Resolution of the methionine synthetase system from Escherichia coli K-12.
Topics: Alcohols; Bacterial Proteins; Chromatography, Gel; Escherichia coli; Methionine; Molecular Weight; NAD; Nucleosides; Oxidation-Reduction; Sulfur; Transferases; Vitamin B 12 | 1970 |
Escherichia coli B cobalamin methyltransferase: ability of diaphorases and lipoamide dehydrogenases to function as reducing agents.
Topics: Alcohols; Animals; Carbon Isotopes; Centrifugation, Density Gradient; Chromatography, DEAE-Cellulose; Dihydrolipoamide Dehydrogenase; Escherichia coli; Flavin Mononucleotide; Flavin-Adenine Dinucleotide; Folic Acid; Iodoacetates; Methionine; Methylation; Myocardium; NAD; Spectrophotometry; Sulfhydryl Compounds; Swine; Transferases; Vitamin B 12 | 1970 |
Formation of the N5-methyltetrahydrofolate-homocysteine methyltransferase holoenzyme from apoenzyme and adenosyl-B 12.
Topics: Adenine Nucleotides; Chemical Phenomena; Chemistry; Chromatography, DEAE-Cellulose; Enzyme Precursors; Escherichia coli; Folic Acid; Homocysteine; Methionine; NAD; Transferases; Vitamin B 12 | 1970 |
Isolation of vitamin B 12 transport mutants of Escherichia coli.
Topics: Aerobiosis; Binding Sites; Biological Transport; Cell Membrane; Chromatography, Thin Layer; Cobalt Isotopes; Culture Media; Escherichia coli; Filtration; Gels; Genetics, Microbial; Methionine; Mutagens; Mutation; Nitrosoguanidines; Osmosis; Penicillins; Silicon Dioxide; Time Factors; Vitamin B 12 | 1971 |
Biosynthesis of vitamin B 12 by Propionibacterium shermanii. IV. Vitamin B 12 and porphyrin synthesis in relation to the metabolic activities of the bacterium.
Topics: Acetates; Acids; Butanones; Chromatography, Thin Layer; Culture Media; Fluorometry; Gels; Glucose; Glycine; Hydrogen-Ion Concentration; Ketoglutaric Acids; Methionine; Nitrogen; Porphyrins; Propionates; Propionibacterium; Pyruvates; Silicon Dioxide; Succinates; Time Factors; Vitamin B 12 | 1971 |
Vitamin B 12 and methionine metabolism in the Buffalo rat liver and Morris 5123 hepatoma.
Topics: Animals; Carcinoma, Hepatocellular; Choline Deficiency; Fatty Liver; Folic Acid; Homocystine; Liver; Liver Cirrhosis; Liver Neoplasms; Male; Methionine; Methylation; Neoplasms, Experimental; Nutrition Disorders; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1972 |
Folate deficiency in rats bearing the Walker tumor 256 and the Novikoff hepatoma.
Topics: Adenine; Animals; Carcinoma 256, Walker; Carcinoma, Hepatocellular; Choline; Diet; FIGLU Test; Folic Acid; Folic Acid Deficiency; Formates; Glycine; Guanine; Liver Neoplasms; Male; Methionine; Neoplasms, Experimental; Rats; Serine; Thymidine; Vitamin B 12 | 1973 |
Regulation of serine transhydroxymethylase activity in Salmonella typhimurium.
Topics: Adenine; Aspartic Acid; Cell-Free System; Enzyme Repression; Glucose; Glycine; Guanine; Inosine; Lyases; Methionine; Mutation; Phosphoric Monoester Hydrolases; Salmonella typhimurium; Serine; Spectrophotometry; Tetrahydrofolates; Thymine; Transferases; Trimethoprim; Vitamin B 12 | 1974 |
[The B12-binding protein in granulocytes and external secretions--characteristics and a possible selective antimicrobial function].
Topics: Animals; Blood Proteins; Digestive System; Feces; Humans; Infant, Newborn; Intestines; Leukocytes; Methionine; Milk; Milk, Human; Molecular Weight; Ribonucleotides; Vitamin B 12 | 1974 |
Urinary excretion of 5-methyltetrahydrofolate and liver S-adenosylmethionine levels of rats fed a vitamin B 12-deficient diet.
Topics: Animals; Bacteria; Biological Assay; Biological Transport; Carbon Radioisotopes; Chromatography, DEAE-Cellulose; Chromatography, Gel; Chromatography, Ion Exchange; Chromatography, Paper; Chromatography, Thin Layer; Drug Stability; Ethionine; Folic Acid; Liver; Male; Methionine; Rats; S-Adenosylmethionine; Tetrahydrofolates; Time Factors; Tritium; Vitamin B 12; Vitamin B 12 Deficiency | 1974 |
Vitamin B12-dependent methionine synthesis in Rhizobium meliloti.
Topics: Carbon Radioisotopes; Cell-Free System; Chromatography, Ion Exchange; Dithiothreitol; Flavin Mononucleotide; Homocysteine; Kinetics; Magnesium; Methionine; Methyltransferases; Oxidation-Reduction; Rhizobium; S-Adenosylmethionine; Tetrahydrofolates; Time Factors; Vitamin B 12 | 1974 |
The effect of DL-methionine, vitamin B 12, and thyroid powder on metabolism of formiminoglutamic acid in rats.
Topics: Animals; Azo Compounds; Body Weight; Diet; FIGLU Test; Folic Acid; Folic Acid Deficiency; Glutarates; Growth; Homocysteine; Liver; Male; Methionine; Methods; Rats; Tetrahydrofolates; Thyroid (USP); Thyroid Hormones; Vitamin B 12; Vitamin B 12 Deficiency | 1974 |
The effect of dietary propionic acid on the requirement of chicks for vitamin B12.
Topics: Animals; Body Weight; Chickens; Diet; Fats; Feces; Glucose; Growth; Malonates; Methionine; Propionates; Vitamin B 12 | 1974 |
Biosynthesis of corrins. II. Incorporation of 13C-labeled substrates in vitamins B12.
Topics: Carbon Isotopes; Magnetic Resonance Spectroscopy; Methionine; Propionibacterium; Vitamin B 12 | 1974 |
Regulation of 5-methyltetrahydrofolate: homocysteine methyltransferase activity by methionine, vitamin B12, and folate in cultured baby hamster kidney cells.
Topics: Animals; Cells, Cultured; Cricetinae; Folic Acid; Homocysteine; Kidney; Mercaptoethanol; Methionine; Methyltransferases; Puromycin; Tetrahydrofolates; Vitamin B 12 | 1973 |
The effect of replacement of methionine by homocystine on survival of malignant and normal adult mammalian cells in culture.
Topics: Animals; Breast; Carcinoma 256, Walker; Cell Division; Cell Line; Cell Survival; Cells, Cultured; Culture Media; Female; Fibroblasts; Folic Acid; Homocystine; Humans; Leukemia L1210; Leukemia, Experimental; Leukemia, Myeloid; Liver; Male; Methionine; Mice; Prostate; Rats; Vitamin B 12 | 1974 |
Studies on the regulation of one-carbon metabolism. II. Repression-derepression of serine hydroxymethyltransferase by methionine in Escherichia coli 113-3.
Topics: Ammonium Sulfate; Chemical Precipitation; Chromatography; Chromatography, DEAE-Cellulose; Chromatography, Gel; Enzyme Repression; Escherichia coli; Folic Acid; Hydrogen-Ion Concentration; Hydroxyapatites; Kinetics; Methionine; Methyltransferases; Molecular Weight; Oxidoreductases; S-Adenosylmethionine; Serine; Tetrahydrofolate Dehydrogenase; Thymine Nucleotides; Transferases; Uracil Nucleotides; Vitamin B 12 | 1972 |
Uptake of cyanocobalamin by escherichia coli B: corrinoid specificity and the relationship of a binder.
Topics: Biological Transport; Carrier Proteins; Chloramphenicol; Chromatography, Gel; Cobamides; Escherichia coli; Methionine; Osmolar Concentration; Protein Binding; Structure-Activity Relationship; Temperature; Tritium; Vitamin B 12 | 1972 |
Regulation of the terminal reactions in methionine biosynthesis by vitamin B 12 and methionine.
Topics: Adenosine Triphosphate; Alcohol Oxidoreductases; Carbon Isotopes; Drug Antagonism; Enzyme Induction; Enzyme Repression; Escherichia coli; Genetics, Microbial; Kinetics; Methionine; Methyltransferases; Mutation; S-Adenosylmethionine; Salmonella typhimurium; Tetrahydrofolates; Transferases; Vitamin B 12 | 1972 |
[Effect of (D,L and DL) ethionine on the growth of Escherichia coli 113-3 in the presence of (D,L or DL) methionine].
Topics: Escherichia coli; Ethionine; Methionine; Photometry; Vitamin B 12 | 1972 |
Regulation of homocysteine biosynthesis in Salmonella typhimurium.
Topics: Acyltransferases; Bacteriological Techniques; Carbon Isotopes; Enzyme Repression; Feedback; Genetics, Microbial; Homocysteine; Homoserine; Hydro-Lyases; L-Serine Dehydratase; Lyases; Methionine; Molecular Biology; Mutation; S-Adenosylmethionine; Salmonella typhimurium; Spectrophotometry; Succinates; Tetrahydrofolates; Tritium; Vitamin B 12 | 1972 |
Methionine and vitamin B 12 repression and precursor induction in the regulation of homocysteine methylation in Salmonella typhimurium.
Topics: Apoproteins; Chloramphenicol; Enzyme Induction; Enzyme Precursors; Genes, Regulator; Homocysteine; Methionine; Methylation; Methyltransferases; Mutation; Oxidoreductases; Salmonella typhimurium; Tetrahydrofolates; Vitamin B 12 | 1973 |
Relationship between the cobalamin-dependent methyltransferase activities in Escherichia coli B and an E. coli B (Met H - ) mutant.
Topics: Apoproteins; Binding Sites; Carbon Isotopes; Chloromercuribenzoates; Chromatography, Gel; Cobamides; Drug Stability; Enzyme Repression; Escherichia coli; Genetics, Microbial; Homocysteine; Methionine; Methyltransferases; Mutation; Protein Binding; Temperature; Tetrahydrofolates; Tritium; Urea; Vitamin B 12 | 1973 |
Transport of vitamin B12 in Escherichia coli: common receptor sites for vitamin B12 and the E colicins on the outer membrane of the cell envelope.
Topics: Amino Acids; Bacterial Proteins; Binding Sites; Biological Transport, Active; Carbon Isotopes; Cell Wall; Cobalt Isotopes; Colicins; Escherichia coli; Leucine; Lysine; Methionine; Mutation; Receptors, Drug; Regression Analysis; Species Specificity; Stereoisomerism; Vitamin B 12 | 1973 |
Transport of vitamin B12 in Escherichia coli: genetic studies.
Topics: Binding Sites; Biological Transport, Active; Cell Membrane; Cell Wall; Cell-Free System; Chromosome Mapping; Cobalt Isotopes; Colicins; Conjugation, Genetic; Drug Resistance, Microbial; Escherichia coli; Genes; Homocysteine; Methionine; Methyltransferases; Mutation; Receptors, Drug; Recombination, Genetic; Transduction, Genetic; Vitamin B 12 | 1973 |
Effect of methionine and vitamin B-12 on the activities of methionine biosynthetic enzymes in metJ mutants of Escherichia coli K12.
Topics: Adenosine Triphosphate; Culture Media; Cystathionine; Enzyme Repression; Escherichia coli; Folic Acid; Homocysteine; Hydro-Lyases; L-Serine Dehydratase; Methionine; Methyltransferases; Mutation; Oxidoreductases; S-Adenosylmethionine; Time Factors; Transferases; Vitamin B 12 | 1973 |
Escherichia coli B 5-methyltetrahydrofolate-homocysteine cobalamin methyltransferase: circular dichroism of the methylated and propylated holoenzymes.
Topics: 1-Propanol; Alcohols; Benzyl Compounds; Binding Sites; Carbon Radioisotopes; Chromatography, Gel; Circular Dichroism; Escherichia coli; Ethanol; Hydrogen-Ion Concentration; Methionine; Methylation; Methyltransferases; Protein Binding; Protein Conformation; Spectrophotometry; Spectrophotometry, Ultraviolet; Tetrahydrofolates; Vitamin B 12 | 1973 |
The involvement of methionine regulatory mutants in the suppresion of b12-dependent homocysteine transmethylase (metH) mutants of Salmonella typhimurium.
Topics: Drug Resistance, Microbial; Ethionine; Genes, Regulator; Homocysteine; Methionine; Methyltransferases; Mutation; Salmonella typhimurium; Suppression, Genetic; Transduction, Genetic; Vitamin B 12 | 1974 |
Effect of methionine contents on the determination of CH3-B12 coenzyme in corrinoid-polypeptide complexes.
Topics: Chromatography; Coenzymes; Escherichia coli; Methionine; Microbial Sensitivity Tests; Vitamin B 12 | 1974 |
[Effect of combined trimethoprim-sulfamethoxazole on level of folates in blood].
Topics: Anti-Bacterial Agents; Biological Assay; Drug Combinations; Drug Synergism; Erythrocytes; Evaluation Studies as Topic; Fever; Folic Acid; Folic Acid Antagonists; Humans; Lacticaseibacillus casei; Methionine; Pyrimidines; Sulfamethoxazole; Time Factors; Trimethoprim; Vitamin B 12 | 1972 |
Folic acid and the methylation of homocysteine by Bacillus subtilis.
Topics: Alcohol Oxidoreductases; Bacillus subtilis; Chromatography, Gel; Chromatography, Thin Layer; Cobamides; Escherichia coli; Folic Acid; Homocysteine; Methionine; Methylation; Serine; Ultrasonics; Vitamin B 12 | 1972 |
[Determination of methionine synthetase in human tissues and its biological significance].
Topics: Cell Nucleus; DNA; Humans; Methionine; Methyltransferases; Nucleoproteins; RNA; Tetrahydrofolates; Vitamin B 12 | 1972 |
Hereditary transcobalamin II deficiency: the role of transcobalamin II in vitamin B 12 -mediated reactions.
Topics: Amino Acid Metabolism, Inborn Errors; Cystathionine; DNA; Hematopoietic System; Homocysteine; Humans; Infant; Infant, Newborn; Isomerases; Leukocytes; Malonates; Methionine; Methyltransferases; Oxidation-Reduction; Propionates; Succinates; Vitamin B 12; Vitamin B 12 Deficiency | 1972 |
Effect of diet on fatty liver-hemorrhagic syndrome incidence in laying chickens.
Topics: Animals; Body Weight; Chickens; Choline; Cobalt; Diet; Fatty Liver; Female; Hemorrhage; Inositol; Lipids; Liver; Methionine; Poultry Diseases; Selenium; Syndrome; Vitamin B 12; Vitamin E | 1972 |
Betaine-homocysteine transmethylase in Pseudomonas denitrificans, a vitamin B 12 overproducer.
Topics: Betaine; Biological Assay; Cell-Free System; Chromatography, Paper; Culture Media; Enzyme Repression; Homocysteine; Hydrogen-Ion Concentration; Lactobacillus; Methionine; Methyltransferases; Mutation; Pantothenic Acid; Pseudomonas; Temperature; Vitamin B 12 | 1973 |
Effect of methionine on specific folate coenzyme pools in vitamin B 12 deficient and supplemented rats.
Topics: Animal Nutritional Physiological Phenomena; Animals; Body Weight; Carbon Isotopes; Chromatography, DEAE-Cellulose; Coenzymes; FIGLU Test; Folic Acid; Glutamates; Homocysteine; Liver; Male; Malonates; Methionine; Methyltransferases; Oligopeptides; Rats; Tetrahydrofolates; Tritium; Vitamin B 12; Vitamin B 12 Deficiency | 1973 |
Involvement of diet in fatty liver and kidney syndrome in broiler chickens.
Topics: Animal Feed; Animals; Chickens; Choline; Diet; Edible Grain; Fatty Liver; Kidney; Kidney Diseases; Lipid Metabolism; Liver; Methionine; Poultry Diseases; Selenium; Syndrome; Vitamin B 12 | 1973 |
Schildt B, Sörbo B,+SORBO B:Studies on the biosynthesis and transfer of labile methyl groups in experimental burns.
Topics: Animals; Burns; Choline; Folic Acid; Liver; Methionine; Methylation; Mice; Vitamin B 12 | 1973 |
Response to dietary therapy in B 12 unresponsive methylmalonic acidemia.
Topics: Acidosis; Agranulocytosis; Blood Glucose; Cephalometry; Child Development; Diet Therapy; Electroencephalography; Female; Growth Disorders; Humans; Infant; Intelligence; Isoleucine; Lymphocytosis; Malonates; Metabolism, Inborn Errors; Methionine; Otitis Media; Threonine; Valine; Vitamin B 12 | 1973 |
[Importance and regulation of the cobalamin-dependent methionine synthetase and the betaine: homocystein methyltransferase in methionine and tetrahydrofolic acid metabolism of the rat].
Topics: Animals; Betaine; Coenzyme A; Diet; Female; Folic Acid; Homocysteine; Kidney; Liver; Methionine; Methylation; Methyltransferases; Rats; Tetrahydrofolates; Vitamin B 12 | 1973 |
Folated deficiency in pernicious anemia measured by determination of decreased serine synthesis in lymphocytes.
Topics: Adolescent; Adult; Aged; Anemia, Pernicious; Blood Proteins; Carbon Isotopes; Female; Folic Acid; Folic Acid Deficiency; Formates; Humans; Lymphocytes; Male; Methionine; Methods; Middle Aged; RNA; Serine; Vitamin B 12; Vitamin B 12 Deficiency | 1973 |
Pregnancy and homocystinuria.
Topics: Adult; Amnion; Blood Coagulation Tests; Cell Line; Cystine; Female; Fibroblasts; Folic Acid; Homocystine; Homocystinuria; Humans; L-Serine Dehydratase; Methionine; Pregnancy; Pregnancy Complications; Pyridoxine; Vitamin B 12 | 1973 |
The effects of diets containing raw soya-bean flour on the vitamin B 12 status of rats.
Topics: Animals; Body Weight; Dietary Proteins; Food, Fortified; Glycine max; Humans; Liver; Male; Malonates; Methionine; Rats; Sex Factors; Threonine; Tyrosine; Valine; Vitamin B 12; Vitamin B 12 Deficiency | 1973 |
Dependence of 5-methyltetrahydrofolate utilization by L5178Y murine leukemia cells in vitro on the presence of hydroxycobalamin and transcobalamin II.
Topics: Animals; Cell Division; Cobalt Isotopes; Coenzymes; Culture Techniques; Folic Acid; Leukemia, Experimental; Methionine; Mice; Tetrahydrofolates; Time Factors; Vitamin B 12 | 1973 |
Nuclear magnetic resonance studies of the biosynthesis of vitamin B12. The origin of the methyl groups on the corrin ring.
Topics: Carbon Isotopes; Chemical Phenomena; Chemistry; Isomerism; Levulinic Acids; Magnetic Resonance Spectroscopy; Methionine; Porphyrins; Propionates; Propionibacterium; Protons; Vitamin B 12 | 1973 |
[Role of vitamin B 12 in the metabolism of propionic acid bacteria].
Topics: Acetates; Aerobiosis; Anaerobiosis; Bacterial Proteins; Cobalt; Culture Media; Cysteine; Deoxyribonucleotides; Glutathione; Methionine; Phosphates; Propionates; Propionibacterium; Ribonucleotides; RNA, Bacterial; Thiosulfates; Vitamin B 12 | 1973 |
Enzymes catalyzing the de novo synthesis of methyl groups in the brain and other tissues of the rat.
Topics: Aerobiosis; Alcohol Oxidoreductases; Animals; Brain; Carbon Radioisotopes; Dihydroxyphenylalanine; Female; Kidney; Liver; Male; Mercaptoethanol; Methionine; Methyltransferases; Rats; S-Adenosylmethionine; Serine; Sex Factors; Tetrahydrofolates; Transferases; Vitamin B 12; Vitamin K | 1973 |
Mechanism of decrease in serum folate levels of rats receiving diphenylhydantoin.
Topics: Animals; Blood Proteins; Folic Acid; Liver; Male; Methionine; Methyltransferases; Phenytoin; Protein Binding; Rats; Tetrahydrofolates; Vitamin B 12 | 1973 |
Liver fat and egg production of laying hens as influenced by choline and other nutrients.
Topics: Animals; Chickens; Choline; Diet; Dietary Proteins; Female; Inositol; Lipid Metabolism; Lipids; Liver; Male; Methionine; Oviposition; Pantothenic Acid; Pyridoxine; Riboflavin; Temperature; Vitamin B 12; Vitamin E | 1973 |
Selective malabsorption of vitamin B 12: report of a case with metabolic studies.
Topics: Alanine; Amino Acids; Anemia, Macrocytic; Child; Chromatography, Gas; Glycine; Hemoglobins; Histidine; Humans; Isoleucine; Leucine; Malabsorption Syndromes; Male; Malonates; Methionine; Proteinuria; Renal Tubular Transport, Inborn Errors; Reticulocytes; Serine; Taurine; Threonine; Tyrosine; Valine; Vitamin B 12; Vitamin B 12 Deficiency | 1974 |
Folic acid deficiency and methyl group metabolism in rat brain: effects of L-dopa.
Topics: Animals; Body Weight; Brain; Dihydroxyphenylalanine; Folic Acid; Folic Acid Deficiency; Kidney; Liver; Male; Methionine; Organ Size; Organ Specificity; Rats; S-Adenosylmethionine; Time Factors; Vitamin B 12 | 1974 |
Acetylation and methylation of histones in pernicious anemia.
Topics: Acetylation; Amino Acids; Anemia, Pernicious; Bone Marrow Examination; Electrophoresis, Paper; Erythropoiesis; Histones; Humans; Lysine; Methionine; Methylation; Tritium; Vitamin B 12 | 1974 |
Mental retardation, megaloblastic anaemia, methylmalonic aciduria and abnormal homocysteine metabolism due to an error in vitamin B12 metabolism.
Topics: Amino Acid Isomerases; Amino Acids; Anemia, Macrocytic; Autopsy; Brain; Brain Chemistry; Cells, Cultured; Child; Culture Media; Fibroblasts; Homocysteine; Humans; Intellectual Disability; Liver; Lung; Lyases; Malonates; Metabolism, Inborn Errors; Methionine; Spleen; Vitamin B 12 | 1974 |
Nutritional features of Bacteroides fragilis subsp. fragilis.
Topics: Anaerobiosis; Bacteroides; Bicarbonates; Carbon Dioxide; Culture Media; Cysteine; Glucose; Heme; Methionine; Minerals; Nitrogen; Quaternary Ammonium Compounds; Species Specificity; Sulfides; Sulfur; Vitamin B 12 | 1974 |
Effect of feeding "carbohydrate-free" diets on the chick's requirement for vitamin B-12.
Topics: Animal Nutritional Physiological Phenomena; Animals; Appetite; Body Weight; Chickens; Deficiency Diseases; Dietary Carbohydrates; Dietary Fats; Dietary Proteins; Energy Metabolism; Glucose; Glycine max; Lipid Metabolism; Male; Methionine; Nutritional Requirements; Plant Proteins; Proteins; Vitamin B 12 | 1974 |
Effect of feeding "carbohydrate-free" diets on the chick's requirement for methionine.
Topics: Animal Nutritional Physiological Phenomena; Animals; Body Composition; Body Weight; Chickens; Deficiency Diseases; Dietary Carbohydrates; Dietary Fats; Dietary Proteins; Energy Metabolism; Glucose; Glycine max; Lipid Metabolism; Male; Methionine; Nutritional Requirements; Plant Proteins; Proteins; Vitamin B 12 | 1974 |
Enzymic synthesis of methionine: formation of a radioactive cobamide enzyme with N5-methyl-14C-tetrahydrofolate.
Topics: Carbon Isotopes; Catalysis; Chromatography, Gel; Escherichia coli; Folic Acid; Homocysteine; Kinetics; Methionine; Methylation; Transferases; Vitamin B 12 | 1967 |
Unusual growth characteristics of a methionine-cyano-B12 auxotroph of Escherichia coli.
Topics: Adenine; Alcohol Oxidoreductases; Arginine; Carbon Isotopes; Escherichia coli; Folic Acid; Histidine; Ligases; Methionine; Mutation; Nucleosides; Oxidoreductases; Thiamine; Transferases; Vitamin B 12 | 1967 |
[Reaction rate of methionine synthesis in Escherichia coli].
Topics: Binding Sites; Carbon Isotopes; Cellulose; Centrifugation, Zonal; Chemical Precipitation; Chromatography, Gel; Coenzymes; Drug Stability; Escherichia coli; Hydrogen-Ion Concentration; Hydroxyapatites; Kinetics; Ligases; Methionine; Methylation; Models, Biological; Molecular Weight; Protein Binding; Radiation Effects; Tritium; Vitamin B 12 | 1967 |
Chemical propylation of vitamin-B12 transmethylase: anomalous behavior of S-adenosyl-L-methionine.
Topics: Adenine Nucleotides; Alkylation; Carbon Isotopes; Escherichia coli; Flavins; Folic Acid; Homocysteine; Methionine; Models, Chemical; Serum Albumin, Bovine; Sulfhydryl Compounds; Transferases; Vitamin B 12 | 1968 |
The reaction of multihalogenated hydrocarbons with free and bound reduced vitamin B 12.
Topics: Anti-Infective Agents, Local; Bacteria; Bromine; Carbon Isotopes; Carbon Tetrachloride; Cell-Free System; Chemical Phenomena; Chemistry; Chloroform; Escherichia coli; Fluorine; Hydrocarbons, Halogenated; Light; Methane; Methionine; Oxidation-Reduction; Spectrophotometry; Transferases; Ultrasonics; Vitamin B 12 | 1968 |
Escherichia coli B N5-methyltetrahydrofolate-homocysteine methyltransferase: sequential formation of bound methylcobalamin with S-adenosyl-L-methionine and N5-methyltetrahydrofolate.
Topics: Carbon Isotopes; Chemical Phenomena; Chemical Precipitation; Chemistry; Chromatography, Gel; Escherichia coli; Folic Acid; Homocysteine; Light; Methionine; Methylation; Nucleosides; Temperature; Time Factors; Transferases; Vitamin B 12 | 1969 |
Escherichia coli B N5-methyltetrahydrofolate-homocysteine cobalamin methyltransferase: activation with S-adenosyl-L-methionine and the mechanism for methyl group transfer.
Topics: Carbon Isotopes; Chemical Phenomena; Chemistry; Escherichia coli; Folic Acid; Homocysteine; Methionine; Methylation; Models, Biological; Nucleosides; Time Factors; Transferases; Vitamin B 12 | 1969 |
Genetic transformation in Escherichia coli.
Topics: DNA; Escherichia coli; Genetics, Microbial; Homocysteine; Hydrogen-Ion Concentration; Kinetics; Methionine; Temperature; Transformation, Genetic; Vitamin B 12 | 1969 |
Effect of L-methionine and vitamin B 12 on methionine biosynthesis in Escherichia coli.
Topics: Amino Acids; Aniline Compounds; Carbon Isotopes; Depression, Chemical; Enzyme Repression; Escherichia coli; Hydro-Lyases; Methionine; Oxidoreductases; Stereoisomerism; Transferases; Vitamin B 12 | 1969 |
On the role of S-adenoxylmethionine in the vitamin B12 dependent methionine biosynthesis.
Topics: Alcohols; Chromatography; Chromatography, DEAE-Cellulose; Chromatography, Gel; Escherichia coli; Flavin Mononucleotide; Folic Acid; Homocysteine; Hydroxyapatites; Kinetics; Methionine; Methods; Methylation; Nucleosides; Spectrophotometry; Sulfur; Transferases; Vitamin B 12 | 1969 |
Escherichia coli B 5-methyltetrahydrofolate-homocysteine cobalamin methyltransferase: catalysis by a reconstituted methyl-14C-cobalamin holoenzyme and the function of S-adenosyl-l-methionine.
Topics: Carbon Isotopes; Escherichia coli; Flavin Mononucleotide; Folic Acid; Homocysteine; Hydrogen; Kinetics; Methionine; Nucleosides; Oxygen; Protein Binding; Transferases; Vitamin B 12 | 1970 |
Escherichia coli B 5-methyltetrahydrofolate-homocysteine cobalamin methyltransferase: resolution and reconstitution of holoenzyme.
Topics: Alcohols; Carbon Isotopes; Centrifugation, Density Gradient; Chromatography, Gel; Darkness; Escherichia coli; Homocysteine; Light; Methionine; Methylation; Nucleosides; Protein Binding; Spectrophotometry; Sulfhydryl Compounds; Sulfur; Tetroses; Transferases; Tritium; Ultracentrifugation; Urea; Vibration; Vitamin B 12 | 1970 |
Spectrophotometric evidence for the formation of an Escherichia coli B B-12s methyltransferase.
Topics: Alcohols; Carbon Isotopes; Escherichia coli; Folic Acid; Free Radicals; Homocysteine; Hydrogen-Ion Concentration; Iodides; Ligases; Methionine; Methylation; Oxidation-Reduction; Spectrophotometry; Sulfur; Transferases; Ultraviolet Rays; Vitamin B 12 | 1970 |
[Study with the recorder biophotometer of the growth of Escherichia coli 113-3 in the presence of vitamin B12 or methionine (D,L, and DL)].
Topics: Escherichia coli; Methionine; Methods; Photometry; Vitamin B 12 | 1969 |
[The role of methionine in the metabolism of vitamin B 12- and methionine-dependent Escherichia coli strains].
Topics: Bacteriological Techniques; Betaine; Choline; Escherichia coli; Methionine; Vitamin B 12 | 1970 |
[The reduction reaction of methionine synthesis. A NADH:FAD-oxidoreductase from Escherichia coli B].
Topics: Chemical Phenomena; Chemistry; Electrophoresis; Escherichia coli; Gels; Methionine; Molecular Weight; Oxidoreductases; Ultracentrifugation; Vitamin B 12 | 1971 |
The vitamin B12-dependent methionine synthetase. The cycle of transmethylation.
Topics: Enzyme Induction; Escherichia coli; Folic Acid; Homocysteine; Methionine; Methylation; Methyltransferases; Nucleosides; Oxidation-Reduction; Spectrophotometry; Transferases; Vitamin B 12 | 1971 |
Synthesis of specific transfer ribonucleic acids during methionine starvation in Escherichia coli 113-3.
Topics: Carbon Isotopes; Chromatography; Escherichia coli; Ligases; Methionine; Methylation; Mutation; Protein Biosynthesis; RNA, Bacterial; RNA, Transfer; Tritium; Valine; Vitamin B 12 | 1971 |
Vitamin B 12 and methionine synthesis in Escherichia coli.
Topics: Acyltransferases; Aerobiosis; Alcohol Oxidoreductases; Anilides; Carbon Isotopes; Chromatography, Ion Exchange; Enzyme Repression; Escherichia coli; Flavin-Adenine Dinucleotide; Folic Acid; Genetics, Microbial; Homocysteine; Homoserine; Kinetics; Methionine; Methyltransferases; Mutation; Serine; Succinates; Transferases; Vitamin B 12 | 1971 |
Biosynthesis of folic acid. I. Influence of various heterocyclic metabolites on the biogenesis of folic acid in microorganisms.
Topics: Culture Media; Enterococcus faecalis; Escherichia coli; Euglena; Folic Acid; Lactobacillus; Methionine; Pantothenic Acid; Riboflavin; Thymine; Vitamin B 12 | 1966 |
Nutrition and vitamin B12 metabolism of a soil bacterium.
Topics: Amines; Animals; Arthrobacter; Bacteria; Biological Assay; Culture Media; Edetic Acid; Escherichia coli; Homocysteine; Humans; Liver; Methionine; Oxygen Consumption; Rabbits; Rats; Soil Microbiology; Thiamine; Vitamin B 12 | 1968 |
Transductional analysis of Pseudomonas aeruginosa methionineless auxotrophs.
Topics: Cysteine; Genetics, Microbial; Homocysteine; Methionine; Methylation; Mutation; Pseudomonas aeruginosa; Transduction, Genetic; Vitamin B 12 | 1969 |
The in vitro uptake of 35S L-methionine by normal and leukaemic leucocytes.
Topics: Adult; Buffers; Child; Edetic Acid; Formaldehyde; Humans; Imidazoles; Leukemia, Lymphoid; Leukemia, Myeloid; Leukemia, Myeloid, Acute; Leukocytes; Methionine; Sulfur Isotopes; Vitamin B 12 | 1968 |
Effects of dietary methionine and vitamin B12 deficiency on folate metabolism.
Topics: Animals; Biological Assay; Deficiency Diseases; Diet; Electrophoresis; Enterococcus faecalis; Folic Acid; Hematocrit; Hemoglobinometry; Lactobacillus; Liver; Male; Methionine; Nitrogen; Radioisotopes; Rats; Transferases; Vitamin B 12 | 1969 |
[Biological role of vitamin B 12: analysis of strict vitamin requirement of cell line of insects in vitro].
Topics: Aminopterin; Cell Division; Cell Line; Coleoptera; Culture Techniques; Folic Acid; Folic Acid Deficiency; Methionine; Nucleic Acids; Nucleotides; Purines; Thymidine; Vitamin B 12; Vitamin B 12 Deficiency | 1970 |
Methylmalonate, formiminoglutamate and aminoimidazolecarboxamide excretion of vitamin B 12 -deficient germfree and conventional rats.
Topics: Aging; Animal Nutritional Physiological Phenomena; Animals; Body Weight; Creatinine; Deficiency Diseases; FIGLU Test; Germ-Free Life; Glutamates; Imidazoles; Intestines; Male; Malonates; Methionine; Rats; Stereoisomerism; Structure-Activity Relationship; Vitamin B 12; Vitamin B 12 Deficiency | 1972 |
Homocystinuria associated with decreased methylenetetrahydrofolate reductase activity.
Topics: Adolescent; Carbon Isotopes; Coenzymes; Female; Fibroblasts; Folic Acid; Homocysteine; Homocystinuria; Humans; L-Serine Dehydratase; Male; Methionine; Methylation; Methyltransferases; Oxidoreductases; Vitamin B 12 | 1972 |
Homocystinuria, vitamin B 6 , and folate: metabolic interrelationships and clinical significance.
Topics: Alcohol Oxidoreductases; Cystathionine; Folic Acid; Glycine; Homocystine; Homocystinuria; Humans; L-Serine Dehydratase; Metabolic Diseases; Methionine; Methyltransferases; Pyridoxine; Tetrahydrofolates; Transferases; Vitamin B 12 | 1972 |
Combined vitamin responsiveness in homocystinuria.
Topics: Adolescent; Adult; Amino Acids; Child; Drug Synergism; Female; Folic Acid; Folic Acid Deficiency; Glycine; Homocysteine; Homocystinuria; Humans; L-Serine Dehydratase; Male; Metabolic Diseases; Methionine; Methylation; Pyridoxine; Vitamin B 12 | 1972 |
Relationship of arginine and methionine to creatine formation in chicks.
Topics: Amino Acids; Animal Nutritional Physiological Phenomena; Animals; Arginine; Betaine; Body Weight; Chickens; Choline; Choline Deficiency; Creatine; Cystine; Deficiency Diseases; Depression, Chemical; Folic Acid; Folic Acid Deficiency; Glycine; Glycine max; Guanidines; Lipid Metabolism; Liver; Male; Methionine; Muscles; Ornithine; Stimulation, Chemical; Urea; Vitamin B 12; Vitamin B 12 Deficiency; Zea mays | 1971 |
[Possibility of accelerating the process of union of diaphyseal fractures of the long tubular bones].
Topics: Fractures, Bone; Humans; Methionine; Pyrogens; Vitamin B 12; Wound Healing | 1971 |
[Hereditary deficiencies of B 12 coenzymes].
Topics: Coenzymes; Female; Homocysteine; Humans; Infant; Isomerases; Male; Metabolism, Inborn Errors; Methionine; Methyltransferases; Vitamin B 12; Vitamin B 12 Deficiency | 1971 |
[Transmethylation processes in senile involution: a working hypothesis].
Topics: Adenine; Aging; Arteriosclerosis; Catecholamines; DNA; Humans; Lipoproteins; Methionine; Methylation; Methyltransferases; Phosphatidylcholines; Phospholipids; RNA; S-Adenosylmethionine; Vitamin B 12 | 1971 |
Effects of sulfur-amino acids and choline on vitamin B 12 -deficient rats.
Topics: Animal Nutritional Physiological Phenomena; Animals; Body Weight; Choline; Cysteine; Drug Synergism; FIGLU Test; Flour; Glutamates; Glycine max; Hot Temperature; Liver; Male; Malonates; Methionine; Propionates; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1971 |
Two enzymic mechanisms for the methylation of homocysteine by extracts of Escherichia coli.
Topics: Alkylation; Enzymes; Escherichia coli; Homocysteine; In Vitro Techniques; Methionine; Molecular Biology; Mutation; Transferases; Ultrasonics; Vitamin B 12 | 1964 |
Methionine synthesis by extracts of Salmonella typhimurium.
Topics: Alcohol Oxidoreductases; Alkylation; Homocysteine; In Vitro Techniques; Methionine; Molecular Biology; Salmonella typhimurium; Serine; Vitamin B 12 | 1966 |
The role of cobamides in methionine synthesis. Enzymatic formation of holoenzyme.
Topics: Escherichia coli; Flavin-Adenine Dinucleotide; In Vitro Techniques; Ligases; Methionine; Transferases; Vitamin B 12 | 1966 |
Role of S-adenosylmethionine in vitamin B12-dependent methionine synthesis.
Topics: Escherichia coli; Iodides; Methionine; Nucleosides; Vitamin B 12 | 1966 |
Altered folate metabolism in a vitamin B 12-methionine auxotroph.
Topics: Escherichia coli; Folic Acid; Methionine; Molecular Biology; Mutation; Nucleosides; Tetrahydrofolate Dehydrogenase; Transferases; Uridine; Vitamin B 12 | 1964 |
Interrelationship of adenosyl methionine and methyl-B12 in the biosynthesis of methionine.
Topics: Animals; Cattle; Coenzymes; Escherichia coli; Homocysteine; Ligases; Liver; Methionine; Nucleosides; Spectrophotometry; Swine; Vitamin B 12 | 1966 |
N5-methyltetrahydrofolate-homocysteine transmethylase. Role of S-adenosylmethionine in vitamin B12-dependent methionine synthesis.
Topics: Alkylation; Escherichia coli; Homocysteine; Iodides; Methionine; Nucleosides; Transferases; Vitamin B 12 | 1967 |
Control of one-carbon metabolism in a methionine-B12 auxotroph of Escherichia coli.
Topics: Carbon; Carbon Isotopes; Enzyme Repression; Escherichia coli; Feedback; Folic Acid; Ligases; Methionine; Mutation; Oxidoreductases; Tetrahydrofolate Dehydrogenase; Thymidine; Transferases; Vitamin B 12 | 1966 |
Biochemical studies on Streptomyces aureofaciens. V. The role of cobalamins and methionine in methylation reactions in tetracycline biosynthesis.
Topics: Adenine; Carbon Isotopes; Cobalt; Glycine; Methionine; Methylation; Serine; Streptomyces; Tetracycline; Vitamin B 12 | 1969 |
Methane as a minor product of pyruvate metabolism by sulphate-reducing and other bacteria.
Topics: Adenine Nucleotides; Air; Alkanes; Bacteria; Butyrates; Coenzyme A; Deuterium; Magnesium; Methane; Methionine; Pyruvates; Stimulation, Chemical; Thiamine Pyrophosphate; Vitamin B 12 | 1969 |
[Pernicious anemia--funicular spinal disease--pernicious psychosis].
Topics: Anemia, Pernicious; Female; Folic Acid; Homocysteine; Humans; Intestinal Absorption; Isomerases; Methionine; Middle Aged; Neurocognitive Disorders; Spinal Diseases; Vitamin B 12; Vitamin B 12 Deficiency | 1969 |
[The mechanism of action of vitamin B 12 in the treatment of pernicious anemia].
Topics: Anemia, Pernicious; Bone Marrow; Erythrocytes; Humans; Methionine; Nucleotides; Reticulocytes; Tetrahydrofolate Dehydrogenase; Thymidine Kinase; Thymine; Vitamin B 12 | 1969 |
Vitamin B 12 dependent methionine biosynthesis in cultured mammalian cells.
Topics: Animals; Carbon Isotopes; Carcinoma; Cell Division; Cell Line; Cricetinae; Culture Media; Culture Techniques; Drug Synergism; Folic Acid; Formaldehyde; HeLa Cells; Homocysteine; Humans; Kidney; Laryngeal Neoplasms; Methionine; Stimulation, Chemical; Swine; Transferases; Vitamin B 12 | 1969 |
[Inborn error of vitamin B12 metabolism].
Topics: Coenzymes; Folic Acid; Humans; Malonates; Metabolism, Inborn Errors; Methionine; Vitamin B 12 | 1969 |
The preoperative localization of parathyroid tumors.
Topics: Animals; Autoradiography; Cobalt Isotopes; Humans; Methionine; Parathyroid Neoplasms; Prognosis; Radiography; Radionuclide Imaging; Rats; Selenium; Vitamin B 12 | 1970 |
Factors affecting formiminoglutamic acid excretion in vitamin B 12 deficiency.
Topics: Aminopterin; Animals; Betaine; Female; Folic Acid; Folic Acid Deficiency; Glutarates; Histidine; Male; Methionine; Rats; Sheep; Vitamin B 12; Vitamin B 12 Deficiency | 1970 |
A derangement in B12 metabolism associated with homocystinemia, cystathioninemia, hypomethioninemia and methylmalonic aciduria.
Topics: Acidosis; Amino Acids; Aminobutyrates; Brain; Chromatography, Paper; Fibroblasts; Homocystine; Humans; Hydro-Lyases; Infant, Newborn; Infant, Newborn, Diseases; Isomerases; Kidney; Liver; Male; Malonates; Metabolism, Inborn Errors; Methionine; Transferases; Vitamin B 12; Vitamin B 12 Deficiency | 1970 |
[Variations in the levels of folates, B 12 and methionine in the blood of mothers of hypotrophic and normal children].
Topics: Birth Weight; Female; Folic Acid; Folic Acid Deficiency; Humans; Infant, Newborn; Infant, Newborn, Diseases; Maternal-Fetal Exchange; Methionine; Pregnancy; Vitamin B 12 | 1970 |
Methylcobalamin as an intermediate in mammalian methionine biosynthesis.
Topics: Animals; Carbon Isotopes; Chromatography, Gel; Electrophoresis; Ethanol; Folic Acid; Homocysteine; Kidney; Methionine; Methylation; Nucleosides; Photochemistry; Solubility; Swine; Transferases; Vitamin B 12 | 1970 |
Hydrocarbon-utilizing microorganism. Relationship of fatty acid composition and biosynthesis to hydrocarbon substrate and to vitamin B 12 level in Corynebacterium simplex.
Topics: Alkanes; Carbon Isotopes; Cobalt; Corynebacterium; Culture Media; Fatty Acids; Folic Acid; Homocysteine; Methionine; Methylation; Nucleosides; Spectrum Analysis; Transferases; Vitamin B 12 | 1970 |
Vitamin B12-dependent methylmalonicaciduria: amino acid toxicity, long chain ketonuria, and protective effect of vitamin B12.
Topics: Acidosis; Amino Acid Metabolism, Inborn Errors; Child, Preschool; Coenzyme A; Diet Therapy; Dietary Proteins; Humans; Isoleucine; Ketones; Leucine; Leukocytes; Male; Malonates; Methionine; Nutritional Requirements; Propionates; Threonine; Valine; Vitamin B 12 | 1970 |
Deranged B 12 metabolism: effects on sulfur amino acid metabolism.
Topics: Adenosine Triphosphate; Adult; Amino Acid Metabolism, Inborn Errors; Amino Acids; Betaine; Brain Chemistry; Carbon Isotopes; Child, Preschool; Folic Acid; Homocysteine; Humans; Infant; Infant, Newborn; Isomerases; Kidney; Liver; Male; Malonates; Methionine; Methyltransferases; Transferases; Vitamin B 12 | 1970 |
Deranged B 12 metabolism: studies of fibroblasts grown in tissue culture.
Topics: Amino Acid Metabolism, Inborn Errors; Carbon Dioxide; Carbon Isotopes; Coenzyme A; Fibroblasts; Folic Acid; Glutamates; Homocysteine; Humans; Hydroxocobalamin; Isomerases; L-Serine Dehydratase; Male; Malonates; Methionine; Methyltransferases; Propionates; Skin; Vitamin B 12 | 1970 |
Homocystinuria with methylmalonic aciduria: two cases in a sibship.
Topics: Adolescent; Carbon Isotopes; Child, Preschool; Coenzyme A; Female; Fibroblasts; Folic Acid; Homocysteine; Homocystinuria; Humans; Hydroxocobalamin; Isomerases; L-Serine Dehydratase; Male; Malonates; Methionine; Methyltransferases; Pedigree; Propionates; Skin; Vitamin B 12 | 1970 |
Changes in the metabolism of vitamin B12 and methionine in rats fed unheated soya-bean flour.
Topics: Animals; Body Weight; FIGLU Test; Flour; Glutathione; Glutathione Reductase; Glycine max; Histidine; Kidney; Liver; Malonates; Methionine; Nutritional Requirements; Propionates; Rats; Sulfates; Vitamin B 12 | 1970 |
[Experimental stdy of nutrition in young animals. (43-1). Nutritional experiment using soybean flour and defatted soybean flour].
Topics: Animals; Caseins; Dietary Proteins; Glycine max; Growth; Methionine; Nutritional Physiological Phenomena; Rats; Vitamin B 12 | 1970 |
The effect of vitamin B 12 and methionine on folic acid uptake by rat liver.
Topics: Animal Feed; Animals; Folic Acid; Injections, Intravenous; Liver; Methionine; Organ Size; Rats; Tritium; Vitamin B 12 | 1971 |
Studies on vitamin B12 metabolism in HeLa cells.
Topics: Adenosine Triphosphate; Carbon Dioxide; Carbon Isotopes; Cell Line; Coenzyme A; Culture Techniques; Enzyme Activation; Folic Acid; HeLa Cells; Homocysteine; Isomerases; Malonates; Methionine; Propionates; Transferases; Vitamin B 12 | 1971 |
[Role of methionine in hydrochloric acid secretion by the gastric mucosa].
Topics: Animals; Anura; Ascorbic Acid; Folic Acid; Gastric Juice; Gastric Mucosa; Methionine; Vitamin B 12 | 1971 |
Experimental approach in chemical pathology.
Topics: Adult; Amblyopia; Animals; Biological Transport; Cystinuria; Dipeptides; Female; Glycine; Hartnup Disease; Humans; Intestinal Absorption; Metabolic Diseases; Metabolism, Inborn Errors; Methionine; Nitrogen; Peptides; Proteins; Smoking; Tyrosine; Vitamin B 12 | 1971 |
Choline level and its effect on egg weight in the Japanese quail.
Topics: Animal Nutritional Physiological Phenomena; Animals; Biotin; Bird Diseases; Birds; Choline Deficiency; Eggs; Female; Folic Acid; Inositol; Methionine; Nutritional Requirements; Ovulation; Vitamin B 12 | 1971 |
Catabolism of betaine and its relationship to cobalamin overproduction.
Topics: Betaine; Carbon Dioxide; Carbon Isotopes; Chemical Phenomena; Chemistry; Choline; Coenzyme A; Glycine; Homocysteine; Methionine; Methylation; Nucleosides; Porphyrins; Pseudomonas; S-Adenosylmethionine; Succinates; Sucrose; Vitamin B 12 | 1971 |
Deranged DNA synthesis by bone marrow from vitamin B-12-deficient humans.
Topics: Anemia, Macrocytic; Bone Marrow; Bone Marrow Cells; Deoxyuridine; DNA; Female; Folic Acid; Folic Acid Deficiency; Humans; In Vitro Techniques; Methionine; Methotrexate; Thymine; Tritium; Uridine; Vitamin B 12; Vitamin B 12 Deficiency | 1968 |
Homocystinuria. II. Subnormal serum folate levels, increased folate clearance and effects of folic acid therapy.
Topics: Adolescent; Amino Acid Metabolism, Inborn Errors; Child; Child, Preschool; Female; FIGLU Test; Folic Acid; Homocystine; Homocystinuria; Humans; Intelligence; Male; Methionine; Nitrogen; Vitamin B 12 | 1968 |
Vitamin B 12-dependent methionine biosynthesis in HEp-2 cells.
Topics: Carbon Isotopes; Carcinoma, Squamous Cell; Culture Techniques; Homocysteine; Humans; Laryngeal Neoplasms; Ligases; Methionine; Quaternary Ammonium Compounds; Radioisotopes; Sulfates; Vitamin B 12 | 1968 |
Urinary aminoimidazolecarboxamide in the rat as influenced by dietary vitamin B12, methionine and thyroid powder.
Topics: Amides; Animal Nutritional Physiological Phenomena; Animals; Deficiency Diseases; Depression, Chemical; Diet; Growth; Imidazoles; Indicators and Reagents; Methionine; Rats; Spectrophotometry; Thyroid Hormones; Vitamin B 12; Vitamin B 12 Deficiency | 1968 |
Plasma amino-acids in the Nigerian nutritional ataxic neuropathy.
Topics: Adult; Amino Acids; Ataxia; Blood Proteins; Cholesterol; Cyanides; Cysteine; Female; Glycoside Hydrolases; Glycosides; Humans; Male; Manihot; Methionine; Middle Aged; Nervous System Diseases; Nigeria; Thiocyanates; Tropical Medicine; Vitamin B 12 | 1968 |
Specificity of the stimulatory effect of betaine on the vitamin B12 fermentation.
Topics: Betaine; Choline; Fermentation; Methionine; Pseudomonas; Stimulation, Chemical; Vitamin B 12 | 1968 |
Action of sulfanilamide on Ochromonas malhamensis.
Topics: Amino Acids; Aminobenzoates; Animals; Eukaryota; Folic Acid; Methionine; Pterins; Purines; Pyrimidines; Sulfanilamides; Vitamin B 12 | 1968 |
Effect of iodinated casein on production of vitamin B 12 and folic acid deficiency in rats.
Topics: Amino Acids; Animals; Biological Transport, Active; Blood Proteins; Carbon Isotopes; Caseins; Diet; Folic Acid Deficiency; Growth; Intestinal Absorption; Intestine, Small; Iodine; Methionine; Oleic Acids; Organ Size; Rats; Tritium; Vitamin B 12; Vitamin B 12 Deficiency | 1969 |
The biochemical role of vitamin B12.
Topics: Aldehydes; Chemical Phenomena; Chemistry; Cobalt; Coenzymes; Hydro-Lyases; Methionine; Models, Biological; Nucleotides; Oxidoreductases; Propylene Glycols; Vitamin B 12 | 1969 |
A derangement in B 12 metabolism leading to homocystinemia, cystathioninemia and methylmalonic aciduria.
Topics: Amino Acid Metabolism, Inborn Errors; Aminobutyrates; Brain; Homocysteine; Homocystine; Homocystinuria; Humans; Infant; Kidney; Liver; Male; Malonates; Metabolism, Inborn Errors; Methionine; Sulfides; Transferases; Vitamin B 12 | 1969 |
Vascular pathology of homocysteinemia: implications for the pathogenesis of arteriosclerosis.
Topics: Amino Acid Metabolism, Inborn Errors; Amino Acids; Aminobutyrates; Arteries; Arteriosclerosis; Child; Diet; Homocysteine; Homocystinuria; Humans; Infant, Newborn; Isomerases; Kidney; Ligases; Male; Malonates; Methionine; Vitamin B 12 | 1969 |
Inhibition by L-methionine of the growth of Euglena gracilis in a glutamic acid medium.
Topics: Acetates; Amino Acids; Animals; Biological Transport; Carbon Isotopes; Culture Media; Cysteine; Euglena; Glutamates; Homocysteine; Methionine; Threonine; Vitamin B 12 | 1969 |
Serum valine and methionine levels in pernicious anaemia under treatment.
Topics: Adult; Aged; Anemia, Pernicious; Female; Folic Acid; Humans; Male; Methionine; Middle Aged; Valine; Vitamin B 12 | 1969 |
Modification of protein synthesis by vitamin B12 in the marine algal flagellate Neochloris pseudoalveolaris.
Topics: Carbon Isotopes; Chloroplasts; DNA; Electrophoresis; Eukaryota; Leucine; Methionine; Methylation; Protein Biosynthesis; RNA; Tritium; Vitamin B 12 | 1969 |
The formation of methionine from the monoglutamate form of methyltetrahydrofolate by higher plants.
Topics: Acyltransferases; Carbon Isotopes; Chromatography, Gel; Folic Acid; Glutamates; Kinetics; Methionine; Methylation; Nucleosides; Plants; Vitamin B 12 | 1969 |
Alternate requirement for vitamin B12 or methionine in mutants of Pseudomonas denitrificans, a vitamin B12-producing bacterium.
Topics: Methionine; Mutation; Pseudomonas; Vitamin B 12 | 1969 |
[Correlations among the amounts of B 12, methionine and folates in the blood of mothers of hypotrophic infants].
Topics: Biological Assay; Birth Weight; Diet; Female; Folic Acid; Genetic Diseases, Inborn; Humans; Infant, Newborn; Lactobacillus; Leuconostoc; Male; Methionine; Nutritional Requirements; Postpartum Period; Pregnancy; Statistics as Topic; Vitamin B 12 | 1969 |
Effects of protein or amino acid deprivation on the tissue distribution of vitamin B12.
Topics: Amino Acids; Animals; Cobalt Isotopes; Cystine; Deficiency Diseases; Histidine; Isoleucine; Kidney; Leucine; Liver; Methionine; Nitrogen; Rats; Tryptophan; Urine; Valine; Vitamin B 12 | 1965 |
Vitamin B 12 and the synthesis of thymine and choline in the chick.
Topics: Animals; Bursa of Fabricius; Choline; Chromatography, Paper; Diet; DNA; Formates; Liver; Methionine; Poultry; RNA; Subcellular Fractions; Thymine; Vitamin B 12 | 1966 |
Effect of diets marginal in methionine and choline with and without vitamin B 12 on rat liver and kidney.
Topics: Animals; Choline; Choline Deficiency; Deficiency Diseases; Kidney Diseases; Liver Diseases; Methionine; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1966 |
The biosynthesis of the methyl groups of choline in Ochromonas malhamensis.
Topics: Alkylation; Amino Alcohols; Choline; Eukaryota; Folic Acid; Homocysteine; In Vitro Techniques; Methionine; Microsomes; Mitochondria; Nucleosides; Phosphatidylcholines; Subcellular Fractions; Vitamin B 12 | 1966 |
Methionine metabolism of the myxomycete Physarum polycephalum.
Topics: Adenine; Amino Acids; Butyrates; Culture Media; Folic Acid; Glycine; Histidine; Methionine; Myxomycetes; Peptides; Sulfur; Vitamin B 12 | 1966 |
Effect of thyroxine on folic acid metabolism.
Topics: Animals; Body Weight; Caseins; FIGLU Test; Folic Acid; Formates; Methionine; Rats; Thyroxine; Vitamin B 12 | 1966 |
Renal changes in dietary hepatic injury in rats.
Topics: Animals; Choline; Diet; Kidney Tubules; Liver Cirrhosis; Methionine; Rats; Vitamin B 12 | 1966 |
Incorporation of [14C] amino acids into liver S-RNA of chick. Effect of orotic acid and vitamin B12.
Topics: Amino Acids; Animals; Carbon Isotopes; In Vitro Techniques; Leucine; Liver; Methionine; Orotic Acid; Poultry; RNA, Transfer; Serine; Vitamin B 12; Vitamin B 12 Deficiency | 1966 |
First defined media for leptomonas spp. from insects.
Topics: Choline; Culture Media; Eukaryota; Glycine; Homocysteine; Insecta; Lactones; Methionine; Pantothenic Acid; Vitamin B 12 | 1966 |
[The effect of conditions instrumental in the process of methylation on the biosynthesis of streptomycin by the Act. streptomycini LS-1 strain].
Topics: Betaine; Creatinine; Methionine; Methylation; Streptomyces; Streptomycin; Vitamin B 12; Vitamin B Complex | 1966 |
[Causes of undulant course of Botkin's disease in children].
Topics: Adolescent; Bilirubin; Child; Child, Preschool; Cross Infection; Glucose; Hepatitis A; Humans; Infant; Insulin; Liver Extracts; Methionine; Vitamin B 12 | 1966 |
Vitamin B12 deficiency in the rat: effect on serum folate and liver formiminotransferase activity.
Topics: Aldehyde-Lyases; Animals; Biological Assay; Choline; Folic Acid; Glutamates; Liver; Male; Methionine; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1967 |
Phenylketonuria. 3. Measurement of multiple parameters of liver function.
Topics: Bilirubin; Cholesterol; Clinical Enzyme Tests; Humans; Isocitrate Dehydrogenase; Liver Function Tests; Methionine; Phenylalanine; Phenylketonurias; Thymol; Transaminases; Tyrosine; Vitamin B 12 | 1967 |
Effect of vitamin B-12 in choline deficiency in the rat.
Topics: Amino Acids; Animals; Body Weight; Choline; Choline Deficiency; Diet; FIGLU Test; Folic Acid; Growth; Hematocrit; Hemoglobins; Kidney; Lipid Metabolism; Liver; Male; Methionine; Organ Size; Rats; Vitamin B 12; Vitamin B Deficiency | 1967 |
Vitamin B12, choline and related substances in dietary hepatic injury in rats.
Topics: Amino Acids; Animals; Body Weight; Choline; Cystine; Diet; Fatty Liver; Growth; Homocystine; Lipid Metabolism; Liver; Male; Methionine; Organ Size; Rats; Vitamin B 12 | 1967 |
Effects of addition of vitamin B12, dried fish meal, groundnut oil and and methionine to all-vegetable diet fed to starting chicks.
Topics: Animals; Arachis; Diet; Fishes; Methionine; Poultry; Vegetables; Vitamin B 12 | 1967 |
Lipid transport in experimental dietary hepatic injury in rats.
Topics: Animals; Biological Transport; Cholesterol; Choline; Dietary Proteins; Fats, Unsaturated; Fatty Liver; Homocystine; Lipid Metabolism; Lipoproteins; Liver; Male; Methionine; Phospholipids; Rats; Vitamin B 12 | 1967 |
Vitamin B12 regulates folate metabolism by the supply of formate.
Topics: Animals; Folic Acid; Formates; Methionine; Models, Biological; Nitrous Oxide; Pteroylpolyglutamic Acids; Rats; Tetrahydrofolates; Vitamin B 12 | 1980 |
Pathogenesis of subacute combined degeneration: a result of methyl group deficiency.
Topics: Animals; Demyelinating Diseases; Disease Models, Animal; Humans; Macaca fascicularis; Methionine; Nitrous Oxide; Spinal Cord; Spinal Cord Diseases; Tetrahydrofolates; Vitamin B 12 | 1981 |
Mutations affecting regulation of methionine biosynthetic genes isolated by use of met-lac fusions.
Topics: DNA Transposable Elements; DNA, Recombinant; Escherichia coli; Genes, Bacterial; Genes, Regulator; Leucine; Methionine; Mutation; Vitamin B 12 | 1982 |
[Therapeutic possibilities in polyneuropathies].
Topics: Adult; Aged; Diabetic Neuropathies; Humans; Methionine; Middle Aged; Nervous System Diseases; Neuritis; Peripheral Nervous System Diseases; Physical Therapy Modalities; Polyneuropathies; Thioctic Acid; Transketolase; Vitamin B 12 | 1982 |
Role of methionine in the regulation of the synthesis of serine hydroxymethyltransferase in Escherichia coli.
Topics: Escherichia coli; Glycine Hydroxymethyltransferase; Kinetics; Methionine; Sulfates; Sulfur Radioisotopes; Transferases; Vitamin B 12 | 1984 |
Altered vitamin B12 metabolism in fibroblasts from a patient with megaloblastic anemia and homocystinuria due to a new defect in methionine biosynthesis.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Macrocytic; Anemia, Megaloblastic; Cells, Cultured; Fibroblasts; Homocystinuria; Humans; Methionine; Nitrous Oxide; Vitamin B 12 | 1984 |
Profound postinitiation enhancement by short-term severe methionine, choline, vitamin B12, and folate deficiency of hepatocarcinogenesis in F344 rats given a single low-dose diethylnitrosamine injection.
Topics: Animals; Body Weight; Choline; Diet; Diethylnitrosamine; Drug Synergism; Folic Acid Deficiency; Liver; Liver Neoplasms, Experimental; Male; Methionine; Nitrosamines; Rats; Rats, Inbred F344; Time Factors; Vitamin B 12 | 1984 |
Tissue S-adenosylmethionine levels in fruit bats (Rousettus aegyptiacus) with nitrous oxide-induced neuropathy.
Topics: Animals; Brain; Cerebellar Ataxia; Chiroptera; Diet; Folic Acid; Liver; Methionine; Nitrous Oxide; Paralysis; S-Adenosylmethionine; Vitamin B 12 | 1983 |
[Effect of vitamin B12 on liver and kidney DNA methylation in guinea pigs in the presence of methionine and ATP].
Topics: 5-Methylcytosine; Adenosine Triphosphate; Animals; Cytosine; DNA; Drug Interactions; Guinea Pigs; Kidney; Liver; Male; Methionine; Methylation; Vitamin B 12 | 1983 |
Homocystinuria and megaloblastic anemia responsive to vitamin B12 therapy. An inborn error of metabolism due to a defect in cobalamin metabolism.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acid Metabolism, Inborn Errors; Anemia, Macrocytic; Anemia, Megaloblastic; Cobamides; Fibroblasts; Homocystinuria; Humans; Hydroxocobalamin; Infant, Newborn; Male; Methionine; Propionates; Tetrahydrofolates; Vitamin B 12 | 1984 |
Retinal degeneration in vitamin B12 disorder associated with methylmalonic aciduria and sulfur amino acid abnormalities.
Topics: Amino Acid Metabolism, Inborn Errors; Amino Acids, Sulfur; Child, Preschool; Cystathionine; Growth Disorders; Homocystinuria; Humans; Hydroxocobalamin; Male; Malonates; Methionine; Methylmalonic Acid; Retinal Degeneration; Vitamin B 12 | 1984 |
Studies on the haemopoietic toxicity of nitrous oxide in man.
Topics: Anesthesia, General; Bone Marrow; Deoxyuridine; Folic Acid; Hematopoiesis; Humans; Megaloblasts; Methionine; Neutrophils; Nitrous Oxide; Platelet Count; Time Factors; Vitamin B 12 | 1983 |
Tissue distribution of methylcobalamin in rats fed amino acid-defined, methyl-deficient diets.
Topics: Adrenal Glands; Amino Acids; Animals; Choline Deficiency; Diet; Kidney; Liver; Male; Methionine; Rats; Rats, Inbred F344; Spleen; Tissue Distribution; Vitamin B 12; Vitamin B 12 Deficiency | 1983 |
Formation and utilization of methionine by rat liver cells in culture.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Cell Division; Cell Transformation, Neoplastic; Cells, Cultured; Culture Media; Homocysteine; Leucine; Liver; Methionine; Rats; Vitamin B 12 | 1983 |
Effects of nitrous oxide-induced inactivation of cobalamin on methionine and S-adenosylmethionine metabolism in the rat.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Betaine-Homocysteine S-Methyltransferase; Brain; Liver; Male; Methionine; Methyltransferases; Nitrous Oxide; Rats; Rats, Inbred Strains; S-Adenosylmethionine; Vitamin B 12 | 1983 |
Chronic cobalamin inactivation impairs folate polyglutamate synthesis in the rat.
Topics: Adenosine; Animals; Deoxyadenosines; Folic Acid; Formyltetrahydrofolates; Liver; Male; Methionine; Nitrous Oxide; Pteroylpolyglutamic Acids; Rats; Rats, Inbred Strains; S-Adenosylmethionine; Tetrahydrofolates; Thionucleosides; Vitamin B 12; Vitamin B 12 Deficiency | 1983 |
Nutritional interactions of vitamin B12, folic acid, and thyroxine.
Topics: Animals; Folic Acid; Histidine; Hyperthyroidism; Liver; Methionine; Methylenetetrahydrofolate Dehydrogenase (NADP); Nutritional Physiological Phenomena; Thiouracil; Thyroid Gland; Thyroidectomy; Thyroxine; Tissue Extracts; Vitamin B 12 | 1980 |
Vitamin B12-dependent replication of L1210 mouse leukemia cells. A model system for cobalamin-folate inter-relationships.
Topics: Animals; Cell Division; Folic Acid; Kinetics; Leucovorin; Leukemia L1210; Methionine; Mice; Structure-Activity Relationship; Vitamin B 12 | 1981 |
Homocystinuria caused by 5,10-methylenetetrahydrofolate reductase deficiency: a case in an infant responding to methionine, folinic acid, pyridoxine, and vitamin B12 therapy.
Topics: 5,10-Methylenetetrahydrofolate Reductase (FADH2); Alcohol Oxidoreductases; Amino Acids; Drug Therapy, Combination; Female; Folic Acid; Homocystinuria; Humans; Infant; Leucovorin; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Pyridoxine; Skin; Tetrahydrofolates; Vitamin B 12 | 1981 |
Biosynthetic incorporation of methyl groups into fortimicins.
Topics: Aminoglycosides; Anti-Bacterial Agents; Methionine; Methylation; Micromonospora; Vitamin B 12 | 1981 |
The role of methionine and vitamin B12 in folate incorporation by rat liver.
Topics: Animals; Folic Acid; Liver; Methionine; Nitrous Oxide; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1980 |
Biosynthesis of vitamin B12. Experiments with the anaerobe Eubacterium limosum and some labelled substrates.
Topics: Anaerobiosis; Benzimidazoles; Carbon Isotopes; Carbon Radioisotopes; Eubacterium; Glycine; Magnetic Resonance Spectroscopy; Methionine; Vitamin B 12 | 1980 |
[Effect of methionine and vitamins B12 and B15 on the content and distribution of proteins, glycogen and lipids in the hepatic lobules of chickens].
Topics: Animal Feed; Animals; Calcium Gluconate; Chickens; Lipid Metabolism; Liver; Liver Glycogen; Methionine; N-substituted Glycines; Propylamines; Proteins; Vitamin B 12; Vitamin B Complex | 1980 |
Methionine recycling in brain: a role for folates and vitamin B-12.
Topics: Animals; Brain; Dopamine; Fasting; Folic Acid; In Vitro Techniques; Liver; Methionine; Methyltransferases; Rabbits; Rats; Vitamin B 12 | 1980 |
Effective homocysteine metabolism may protect South African blacks against coronary heart disease.
Topics: Adult; Black People; Coronary Disease; Folic Acid; Homocysteine; Humans; Male; Methionine; South Africa; Vitamin B 12; Vitamins; White People | 1995 |
Vitamin-B12-independent methionine synthase from a higher plant (Catharanthus roseus). Molecular characterization, regulation, heterologous expression, and enzyme properties.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acid Sequence; Base Sequence; Escherichia coli; Methionine; Molecular Sequence Data; Plants; Transcription, Genetic; Vitamin B 12 | 1995 |
Serum betaine, N,N-dimethylglycine and N-methylglycine levels in patients with cobalamin and folate deficiency and related inborn errors of metabolism.
Topics: Adolescent; Adult; Aged; Animals; Betaine; Betaine-Homocysteine S-Methyltransferase; Chromatography; Creatinine; Cystathionine beta-Synthase; Female; Folic Acid Deficiency; Gas Chromatography-Mass Spectrometry; Homocysteine; Humans; Male; Metabolism, Inborn Errors; Methionine; Methyltransferases; Middle Aged; Rats; Rats, Sprague-Dawley; Reference Values; Renal Insufficiency; Sarcosine; Vitamin B 12; Vitamin B 12 Deficiency | 1993 |
Prevention of neural tube defects by and toxicity of L-homocysteine in cultured postimplantation rat embryos.
Topics: Adenosylhomocysteinase; Animals; Catalase; Copper; Copper Sulfate; Culture Techniques; Drug Interactions; Embryonic and Fetal Development; Embryonic Development; Female; Homocysteine; Homocystine; Hydrolases; Methionine; Neural Tube Defects; Oxidation-Reduction; Pregnancy; Rats; S-Adenosylhomocysteine; S-Adenosylmethionine; Stereoisomerism; Teratogens; Vitamin B 12 | 1994 |
Preoperative methionine loading enhances restoration of the cobalamin-dependent enzyme methionine synthase after nitrous oxide anesthesia.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Aged; Anesthesia, Inhalation; Female; Homocysteine; Humans; Kinetics; Leukocytes; Male; Methionine; Middle Aged; Nitrous Oxide; Reference Values; Time Factors; Vitamin B 12 | 1994 |
Homocysteine increases as folate decreases in plasma of healthy men during short-term dietary folate and methyl group restriction.
Topics: Adult; Choline; Diet; Folic Acid; Folic Acid Deficiency; Glycine max; Homocysteine; Humans; Male; Methionine; Middle Aged; Nutritional Requirements; Nutritional Status; Vitamin B 12 | 1994 |
Development and reversion of methionine dependence in a human glioma cell line: relation to homocysteine remethylation and cobalamin status.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Brain Neoplasms; Female; Folic Acid; Glioblastoma; Homocysteine; Humans; Methionine; Methylation; Nitrous Oxide; Tumor Cells, Cultured; Vitamin B 12 | 1994 |
Cobalamin metabolism in cultured human chorionic villus cells.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Apoenzymes; Biopsy; Cell Division; Cells, Cultured; Chorionic Villi; Homocysteine; Humans; In Vitro Techniques; Methionine; Methylmalonyl-CoA Mutase; Receptors, Cell Surface; Transcobalamins; Vitamin B 12 | 1993 |
Nitrous oxide degradation by cobalamin-dependent methionine synthase: characterization of the reactants and products in the inactivation reaction.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Electrochemistry; Enzyme Activation; Enzyme Stability; Escherichia coli; Homocysteine; Hydrogen-Ion Concentration; Methionine; Methylation; Nitrous Oxide; Oxidation-Reduction; Oxygen; Spectrophotometry; Vitamin B 12 | 1994 |
Nitrous oxide inactivation of cobalamin-dependent methionine synthase from Escherichia coli: characterization of the damage to the enzyme and prosthetic group.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acid Sequence; Binding Sites; Electrochemistry; Escherichia coli; Homocysteine; Methionine; Molecular Sequence Data; Nitrous Oxide; Oxidation-Reduction; Peptide Fragments; Peptide Mapping; S-Adenosylmethionine; Tetrahydrofolates; Trypsin; Vitamin B 12 | 1994 |
Study on the presence of homocysteine in ovarian follicular fluid.
Topics: Adult; Female; Folic Acid; Follicular Fluid; Homocysteine; Humans; Methionine; Pyridoxine; Reference Values; Vitamin B 12 | 1993 |
Hyperhomocysteinemia in patients operated for lower extremity ischaemia below the age of 50--effect of smoking and extent of disease.
Topics: Adult; Arteriosclerosis; Female; Folic Acid; Follow-Up Studies; Homocysteine; Humans; Ischemia; Male; Methionine; Middle Aged; Postoperative Complications; Pyridoxine; Risk Factors; Smoking; Vitamin B 12 | 1993 |
Methionine but not folinic acid or vitamin B-12 alters the frequency of neural tube defects in Axd mutant mice.
Topics: Amino Acids; Animals; Embryo, Mammalian; Female; Folic Acid; Injections, Intraperitoneal; Male; Methionine; Mice; Mice, Inbred BALB C; Mice, Inbred Strains; Mice, Mutant Strains; Neural Tube Defects; Vitamin B 12 | 1993 |
Reversibility of changes in nucleic acid methylation and gene expression induced in rat liver by severe dietary methyl deficiency.
Topics: Amino Acid Sequence; Animals; Choline; DNA; Folic Acid; Gene Expression Regulation, Neoplastic; Genes, fos; Genes, myc; Genes, ras; Liver; Liver Neoplasms; Male; Methionine; Methylation; Methyltransferases; Molecular Sequence Data; Rats; Rats, Inbred F344; RNA, Messenger; RNA, Transfer; Vitamin B 12 | 1993 |
The methylcobalamin metabolism of cultured human fibroblasts.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Division; Cell Line; Cytosol; Fibroblasts; Humans; Lung; Lysosomes; Methionine; Vitamin B 12 | 1993 |
Plasma homocysteine and severity of atherosclerosis in young patients with lower-limb atherosclerotic disease.
Topics: Adult; Arteriosclerosis; Cerebrovascular Disorders; Coronary Disease; Fasting; Female; Folic Acid; Homocysteine; Humans; Leg; Male; Methionine; Middle Aged; Pyridoxine; Risk Factors; Vitamin B 12 | 1996 |
Kinetics of total plasma homocysteine in subjects with hyperhomocysteinemia due to folate or cobalamin deficiency.
Topics: Adolescent; Adult; Aged; Female; Folic Acid; Folic Acid Deficiency; Half-Life; Hematinics; Homocysteine; Humans; Kinetics; Male; Methionine; Methylmalonic Acid; Middle Aged; Vitamin B 12; Vitamin B 12 Deficiency | 1996 |
Elevated plasma concentration of reduced homocysteine in patients with human immunodeficiency virus infection.
Topics: Adult; CD4 Lymphocyte Count; Cysteine; Dipeptides; Female; Folic Acid; HIV Antibodies; HIV Infections; HIV-1; Homocysteine; Humans; Interleukin-2; Lymphocytes; Male; Methionine; Middle Aged; Oxidation-Reduction; Oxidative Stress; Vitamin B 12 | 1996 |
Homocysteine metabolism and risk of myocardial infarction: relation with vitamins B6, B12, and folate.
Topics: Case-Control Studies; Diet; Diet Surveys; Fasting; Female; Folic Acid; Homocysteine; Humans; Logistic Models; Male; Methionine; Methylation; Middle Aged; Myocardial Infarction; Odds Ratio; Pyridoxine; Risk Factors; Vitamin B 12 | 1996 |
Lipotrope-mediated c-jun and ornithine decarboxylase mRNA expression in mammary acinar cells.
Topics: Animals; Choline; Female; Folic Acid; Gene Expression; Genes, jun; Mammary Glands, Animal; Methionine; Ornithine Decarboxylase; Rats; RNA, Messenger; Vitamin B 12 | 1996 |
Evidence that the CysG protein catalyzes the first reaction specific to B12 synthesis in Salmonella typhimurium, insertion of cobalt.
Topics: Chromosome Mapping; Cobalt; Culture Media; Cysteine; Heme; Iron; Methionine; Methyltransferases; Mutagenesis; Operon; Oxidation-Reduction; Phenotype; Point Mutation; Salmonella typhimurium; Sulfites; Vitamin B 12 | 1996 |
[The prevalence of hyperhomocysteinemia in thromboangiitis obliterans. Does homocysteine play a role pathogenetically?].
Topics: Adult; Chromatography, High Pressure Liquid; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Prevalence; Pyridoxine; Risk Factors; Smoking; Statistics, Nonparametric; Thromboangiitis Obliterans; Time Factors; Vitamin B 12 | 1996 |
Effect of folate deficiency and folate and B12 excess on memory functioning in young chicks.
Topics: Animals; Avoidance Learning; Chickens; Dose-Response Relationship, Drug; Drug Synergism; Folic Acid; Folic Acid Antagonists; Folic Acid Deficiency; Memory; Methionine; Methotrexate; Reflex; Time Factors; Vitamin B 12 | 1997 |
Fasting and post-methionine homocyst(e)ine levels in a healthy Australian population.
Topics: Adult; Aged; Australia; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Reference Values; Vitamin B 12 | 1997 |
Abnormal homocysteine metabolism in rheumatoid arthritis.
Topics: Adult; Aged; Arthritis, Rheumatoid; Fasting; Female; Homocysteine; Humans; Male; Methionine; Methotrexate; Middle Aged; Vitamin B 12; Vitamin B 12 Deficiency | 1997 |
Cyanocobalamin [c-lactam] inhibits vitamin B12 and causes cytotoxicity in HL60 cells: methionine protects cells completely.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Death; Enzyme Inhibitors; Folic Acid; HL-60 Cells; Homocysteine; Humans; Hydroxocobalamin; Methionine; Methylmalonyl-CoA Mutase; Propionates; Tetrahydrofolates; Vitamin B 12 | 1997 |
Are dietary factors involved in DNA methylation associated with colon cancer?
Topics: Aged; Aging; Alcohol Drinking; Anti-Inflammatory Agents, Non-Steroidal; Aspirin; Case-Control Studies; Colonic Neoplasms; Diet; DNA Methylation; Female; Folic Acid; Humans; Male; Methionine; Middle Aged; Pyridoxine; Retrospective Studies; Risk Factors; Vitamin B 12 | 1997 |
Effects of methylcobalamin on the proliferation of androgen-sensitive or estrogen-sensitive malignant cells in culture and in vivo.
Topics: Androgens; Animals; Breast Neoplasms; Cell Division; Dose-Response Relationship, Drug; Estrogens; Female; Homocysteine; Humans; Leydig Cell Tumor; Male; Mammary Neoplasms, Animal; Methionine; Mice; Neoplasm Transplantation; Neoplasms, Hormone-Dependent; Testicular Neoplasms; Tumor Cells, Cultured; Vitamin B 12 | 1997 |
Purification and assay of cobalamin-dependent methionine synthase from Escherichia coli.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Carbon Radioisotopes; Escherichia coli; Homocysteine; Methionine; Spectrophotometry; Tetrahydrofolates; Vitamin B 12 | 1997 |
Homocysteine accumulation in human ovarian carcinoma ascitic/cystic fluids possibly caused by metabolic alteration of the methionine cycle in ovarian carcinoma cells.
Topics: Adult; Aged; Ascitic Fluid; Cysteine; Female; Folic Acid; Glycine; Homocysteine; Humans; Methionine; Methylation; Middle Aged; Ovarian Neoplasms; Vitamin B 12 | 1997 |
Increased concentrations of homocysteine in the cerebrospinal fluid in patients with fibromyalgia and chronic fatigue syndrome.
Topics: Adult; Cystathionine; Fatigue Syndrome, Chronic; Female; Fibromyalgia; Homocysteine; Humans; Methionine; Middle Aged; Models, Biological; Vitamin B 12 | 1997 |
Cobalamin E (cblE) disease: a severe neurological disorder with megaloblastic anaemia, homocystinuria and low serum methionine.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Anemia, Megaloblastic; Brain Diseases; Homocystinuria; Humans; Male; Methionine; Vitamin B 12 | 1997 |
In vitro methylation of inorganic arsenic in mouse intestinal cecum.
Topics: Animals; Arsenic Poisoning; Arsenicals; Cecum; Chromatography, Thin Layer; Glutathione; Gram-Negative Bacteria; Gram-Positive Bacteria; Male; Methionine; Methylation; Mice; Sodium Selenite; Sulfhydryl Compounds; Vitamin B 12 | 1997 |
[Influence of levels of vitamin B2, B12, and folic acid on the values of basal homocysteinemia and after methionine overload].
Topics: Folic Acid; Homocysteine; Humans; Methionine; Middle Aged; Pyridoxine; Vitamin B 12 | 1998 |
Methylenetetrahydrofolate reductase deficiency in a patient with phenotypic findings of Angelman syndrome.
Topics: Angelman Syndrome; Child; Diagnosis, Differential; Homocysteine; Homocystinuria; Humans; Male; Metabolism, Inborn Errors; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Oxidoreductases Acting on CH-NH Group Donors; Phenotype; Vitamin B 12 | 1998 |
Cobalamin metabolism in methionine-dependent human tumour and leukemia cell lines.
Topics: Carbon Radioisotopes; Culture Media; Humans; Leukemia; Melanoma; Methionine; Neoplasms; Propionates; Tetrahydrofolates; Tumor Cells, Cultured; Vitamin B 12 | 1998 |
Neural-tube defects are associated with low concentrations of cobalamin (vitamin B12) in amniotic fluid.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amniocentesis; Amniotic Fluid; Case-Control Studies; Cysteine; Double-Blind Method; Female; Folic Acid; Homocysteine; Humans; Methionine; Methylation; Neural Tube Defects; Pilot Projects; Pregnancy; Reference Values; Vitamin B 12 | 1998 |
Functionally null mutations in patients with the cblG-variant form of methionine synthase deficiency.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Line; Child; Cloning, Molecular; Codon, Terminator; DNA, Complementary; Female; Fibroblasts; Frameshift Mutation; Genetic Complementation Test; Genetic Variation; Homocysteine; Homocystinuria; Humans; Infant, Newborn; Introns; Male; Methionine; Nuclear Family; Polymorphism, Single-Stranded Conformational; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger; Skin; Transcription, Genetic; Vitamin B 12 | 1998 |
Disruption of a regulatory system involving cobalamin distribution and function in a methionine-dependent human glioma cell line.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Feedback; Glioma; Homocysteine; Humans; Methionine; Microsomes; Mitochondria; Nitrous Oxide; Receptors, Cell Surface; Tumor Cells, Cultured; Vitamin B 12 | 1998 |
Maternal epigenetics and methyl supplements affect agouti gene expression in Avy/a mice.
Topics: 5-Methylcytosine; Agouti Signaling Protein; Animals; Betaine; Choline; Cytosine; Dietary Supplements; Female; Folic Acid; Gene Expression Regulation; Genomic Imprinting; Hair Color; Intercellular Signaling Peptides and Proteins; Male; Methionine; Mice; Mice, Inbred Strains; Pregnancy; Proteins; S-Adenosylmethionine; Vitamin B 12; Zinc | 1998 |
A common mutation in the methylenetetrahydrofolate reductase gene and risk of coronary heart disease: results among U.S. men.
Topics: Adult; Aged; Alleles; Case-Control Studies; Confidence Intervals; Coronary Disease; Diet; Folic Acid; Follow-Up Studies; Genotype; Heterozygote; Homocysteine; Homozygote; Humans; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Mutation; Odds Ratio; Oxidoreductases Acting on CH-NH Group Donors; Pyridoxine; Riboflavin; Risk Factors; Smoking; United States; Vitamin B 12 | 1998 |
Determinants of fasting and post-methionine homocysteine levels in families predisposed to hyperhomocysteinemia and premature vascular disease.
Topics: Adult; Age Factors; Amino Acid Substitution; Arteriosclerosis; Body Mass Index; Comorbidity; Fasting; Female; Folic Acid; Genetic Predisposition to Disease; Genotype; Homocysteine; Humans; Hyperhomocysteinemia; Hypertension; Lipids; Male; Menopause; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Oxidoreductases Acting on CH-NH Group Donors; Polymorphism, Genetic; Pyridoxine; Smoking; Vitamin B 12 | 1999 |
Fasting and post-methionine homocysteine levels in NIDDM. Determinants and correlations with retinopathy, albuminuria, and cardiovascular disease.
Topics: Administration, Oral; Adult; Aged; Albuminuria; Analysis of Variance; Blood Pressure; Cardiovascular Diseases; Creatinine; Diabetes Mellitus, Type 2; Diabetic Nephropathies; Diabetic Retinopathy; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Postmenopause; Premenopause; Pyridoxal Phosphate; Regression Analysis; Risk Factors; Vitamin B 12 | 1999 |
Methylenetetrahydrofolate reductase, diet, and risk of colon cancer.
Topics: Adult; Aged; Alcohol Drinking; California; Case-Control Studies; Colonic Neoplasms; Diet; Diet Surveys; DNA Methylation; Female; Folic Acid; Genotype; Homozygote; Humans; Incidence; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Mutation; Oxidoreductases Acting on CH-NH Group Donors; Pyridoxine; Vitamin B 12 | 1999 |
A common variant in methionine synthase reductase combined with low cobalamin (vitamin B12) increases risk for spina bifida.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Amino Acid Substitution; Child; Child, Preschool; Deoxyribonucleases, Type II Site-Specific; DNA; Family Health; Female; Gene Frequency; Genetic Variation; Genotype; Homocysteine; Humans; Isoleucine; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Oxidoreductases Acting on CH-NH Group Donors; Point Mutation; Polymorphism, Genetic; Regression Analysis; Risk Factors; Spinal Dysraphism; Vitamin B 12 | 1999 |
Molecular basis for methionine synthase reductase deficiency in patients belonging to the cblE complementation group of disorders in folate/cobalamin metabolism.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Megaloblastic; DNA Mutational Analysis; DNA, Complementary; Enzyme Activation; Ferredoxin-NADP Reductase; Folic Acid; Genes, Recessive; Genetic Complementation Test; Heteroduplex Analysis; Homocysteine; Humans; Hyperhomocysteinemia; Methionine; Mutation; Polymorphism, Single-Stranded Conformational; Reverse Transcriptase Polymerase Chain Reaction; RNA Splicing; Sequence Analysis, DNA; Vitamin B 12 | 1999 |
Haemolytic uraemic syndrome and pulmonary hypertension in a patient with methionine synthase deficiency.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anemia, Megaloblastic; Female; Hemolytic-Uremic Syndrome; Humans; Hypertension, Pulmonary; Infant; Metabolism, Inborn Errors; Methionine; Vitamin B 12 | 1999 |
Nonsyndromic orofacial clefts: association with maternal hyperhomocysteinemia.
Topics: Adult; Case-Control Studies; Child, Preschool; Cleft Lip; Cleft Palate; Erythrocytes; Fasting; Female; Folic Acid; Homocysteine; Humans; Infant; Maternal-Fetal Exchange; Methionine; Pregnancy; Pyridoxine; Risk Factors; Vitamin B 12 | 1999 |
The effect of diet on plasma homocysteine concentrations in healthy male subjects.
Topics: Adult; Cross-Sectional Studies; Diet; Diet, Vegetarian; Fasting; Folic Acid; Homocysteine; Humans; Male; Meat; Methionine; Methylation; Middle Aged; Vitamin B 12 | 1999 |
[Gender differences in serum homocysteine levels and associated factors].
Topics: Creatinine; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Sex Characteristics; Vitamin B 12 | 1999 |
Amniotic fluid B12, calcium, and lead levels associated with neural tube defects.
Topics: Adult; Amniocentesis; Amniotic Fluid; Calcium; Cross-Sectional Studies; Female; Folic Acid; Gestational Age; Hispanic or Latino; Humans; Lead; Maternal Age; Methionine; Neural Tube Defects; Pregnancy; Retrospective Studies; Ultrasonography, Prenatal; Vitamin B 12 | 1999 |
Effect of short-term vitamin (folic acid, vitamins B6 and B12) administration on endothelial dysfunction induced by post-methionine load hyperhomocysteinemia.
Topics: Administration, Oral; Adult; Blood Flow Velocity; Drug Therapy, Combination; Endothelium, Vascular; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Male; Methionine; Middle Aged; Pyridoxine; Treatment Outcome; Vasodilation; Vitamin B 12 | 1999 |
The effect of estrogen replacement therapy on total plasma homocysteine in healthy postmenopausal women.
Topics: Adult; Estrogen Replacement Therapy; Folic Acid; Homocysteine; Humans; Linear Models; Lipids; Methionine; Middle Aged; Postmenopause; Pyridoxine; Reference Values; Time Factors; Vitamin B 12 | 2000 |
Homocysteine thiolactone is a positive effector of sigma(S) levels in Escherichia coli.
Topics: Bacterial Proteins; Culture Media; Escherichia coli; Escherichia coli Proteins; Gene Expression Regulation, Bacterial; Homocysteine; Methionine; Repressor Proteins; Sigma Factor; Vitamin B 12 | 2000 |
Homocysteine concentrations and methionine loading in patients on antiepileptic drugs.
Topics: Adult; Aged; Anticonvulsants; Carbamazepine; Case-Control Studies; Cytochrome P-450 Enzyme System; Epilepsy; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Male; Methionine; Middle Aged; Phenobarbital; Phenytoin; Primidone; Treatment Outcome; Valproic Acid; Vitamin B 12 | 2000 |
Nitrous oxide myelopathy in an abuser of whipped cream bulbs.
Topics: Adult; Cervical Vertebrae; Humans; Male; Methionine; Nitrous Oxide; Spinal Cord Diseases; Substance-Related Disorders; Vitamin B 12 | 2000 |
Impaired glucose tolerance (IGT) is not associated with disturbed homocysteine metabolism.
Topics: Blood Glucose; Cardiovascular Diseases; Creatinine; Diabetes Mellitus, Type 2; Dose-Response Relationship, Drug; Fasting; Folic Acid; Homocysteine; Humans; Insulin; Male; Methionine; Middle Aged; Proinsulin; Risk Factors; Time Factors; Vitamin B 12 | 2000 |
DNA stability and genomic methylation status in colonocytes isolated from methyl-donor-deficient rats.
Topics: Animals; Choline Deficiency; Colon; Colonic Neoplasms; Comet Assay; DNA; DNA Damage; DNA Methylation; Folic Acid; Folic Acid Deficiency; Liver; Male; Methionine; Rats; S-Adenosylmethionine; Vitamin B 12 | 2000 |
Reverse methionine biosynthesis from S-adenosylmethionine in eukaryotic cells.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adaptor Proteins, Signal Transducing; Amino Acid Sequence; Deoxyadenosines; Fungal Proteins; Gene Expression Regulation; Homocysteine S-Methyltransferase; Membrane Proteins; Methionine; Molecular Sequence Data; S-Adenosylmethionine; Saccharomyces cerevisiae Proteins; Thionucleosides; Vitamin B 12; Vitamin U; Yeasts | 2000 |
Moderately low vitamin B12 does not compromise transmethylation in adults on a free diet: implications for assessment of vitamin B12 status.
Topics: Analysis of Variance; Creatine; Dietary Proteins; Homocysteine; Humans; Methionine; Methylation; Reference Values; Statistics as Topic; Vitamin B 12 | 2000 |
[Homocysteine and its metabolites in chronic renal insufficiency and the effect of a vitamin replacement].
Topics: Adult; Aged; Arteriosclerosis; Cysteine; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Kidney Failure, Chronic; Male; Methionine; Middle Aged; Pyridoxine; Renal Dialysis; Severity of Illness Index; Vitamin B 12; Vitamin B Complex | 2000 |
Homocysteine levels in vegetarians versus omnivores.
Topics: Adult; Aged; Diet; Diet, Vegetarian; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Slovakia; Surveys and Questionnaires; Vitamin B 12; Vitamin B 12 Deficiency | 2000 |
Increased uracil misincorporation in lymphocytes from folate-deficient rats.
Topics: Animals; Choline Deficiency; Comet Assay; DNA; DNA Damage; Erythrocytes; Folic Acid; Folic Acid Deficiency; Liver; Lymphocytes; Male; Methionine; Rats; Uracil; Vitamin B 12 | 2000 |
Is there a role of cyclosporine A on total homocysteine export from human renal proximal tubular epithelial cells?
Topics: Biological Transport, Active; Cells, Cultured; Cyclosporine; Epithelial Cells; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Immunosuppressive Agents; Kidney Transplantation; Kidney Tubules, Proximal; Methionine; Pyridoxine; Vitamin B 12 | 2001 |
Traditional and alternative nutrition--levels of homocysteine and lipid parameters in adults.
Topics: Adult; Aged; Arteriosclerosis; Cholesterol; Cholesterol, HDL; Cholesterol, LDL; Dairy Products; Diet, Vegetarian; Eggs; Female; Folic Acid; Homocysteine; Humans; Lipids; Male; Methionine; Middle Aged; Nutritional Physiological Phenomena; Reference Values; Risk Factors; Vitamin B 12 | 2000 |
Mutations in the gene for methylenetetrahydrofolate reductase, homocysteine levels, and vitamin status in women with a history of preeclampsia.
Topics: Birth Weight; Deoxyribonucleases, Type II Site-Specific; DNA; DNA Primers; Electrophoresis, Polyacrylamide Gel; Female; Folic Acid; Genotype; Gestational Age; HELLP Syndrome; Homocysteine; Humans; Infant, Newborn; Linear Models; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Mutation; Oxidoreductases Acting on CH-NH Group Donors; Polymerase Chain Reaction; Pre-Eclampsia; Pregnancy; Radioimmunoassay; Regression Analysis; Vitamin B 12 | 2001 |
Hyperhomocysteinemia enhances vascular inflammation and accelerates atherosclerosis in a murine model.
Topics: Animals; Apolipoproteins E; Arteriosclerosis; Cells, Cultured; Diet; Disease Models, Animal; Folic Acid; Humans; Hyperhomocysteinemia; Immunohistochemistry; Male; Matrix Metalloproteinase 9; Methionine; Mice; Mice, Inbred C57BL; Mice, Knockout; Pyridoxine; Receptor for Advanced Glycation End Products; Receptors, Immunologic; Thromboplastin; Vascular Cell Adhesion Molecule-1; Vasculitis; Vitamin B 12 | 2001 |
Maternal pyridoxine non-responsive homocystinuria: the role of dietary treatment and anticoagulation.
Topics: Adult; Anticoagulants; Female; Fibrinogen; Folic Acid; Heparin; Homocystinuria; Humans; Methionine; Pregnancy; Pregnancy Complications; Vitamin B 12 | 2001 |
Nitric oxide inhibits methionine synthase activity in vivo and disrupts carbon flow through the folate pathway.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Carbon; Cell Line; Coculture Techniques; Cricetinae; Endothelium, Vascular; Folic Acid; Humans; Methionine; NG-Nitroarginine Methyl Ester; Nitric Oxide; Nitric Oxide Donors; Purine Nucleotides; Rats; Serine; Vitamin B 12 | 2001 |
Homocysteine metabolism in children with Down syndrome: in vitro modulation.
Topics: Adenosine; Case-Control Studies; Child; Chromatography, High Pressure Liquid; Cystathionine; Cystathionine beta-Synthase; Cysteine; DNA Methylation; Down Syndrome; Glutathione; Homocysteine; Humans; Leucovorin; Lymphocytes; Methionine; Oxidative Stress; S-Adenosylhomocysteine; S-Adenosylmethionine; Sarcosine; Superoxide Dismutase; Thymidine; Vitamin B 12 | 2001 |
An examination of polymorphic genes and folate metabolism in mothers affected by a spina bifida pregnancy.
Topics: Adult; Alleles; England; Erythrocytes; Female; Folic Acid; Gene Frequency; Humans; Methionine; Methylation; Mutation; Polyglutamic Acid; Polymorphism, Genetic; Polymorphism, Single Nucleotide; Pregnancy; Pteroylpolyglutamic Acids; Spinal Dysraphism; Vitamin B 12 | 2001 |
[Effect of vitamin B6, B12 and folic acid levels on basal blood homocysteine values and after methionine load].
Topics: Folic Acid; Homocysteine; Humans; Methionine; Middle Aged; Vitamin B 12; Vitamin B 6 | 2001 |
The growth of Paracoccus halodenitrificans in a defined medium.
Topics: Ammonium Sulfate; Betaine; Carbohydrate Metabolism; Carbohydrates; Culture Media; Ferrous Compounds; Magnesium Sulfate; Methionine; Nitrates; Paracoccus; Phosphates; Potassium Compounds; Sodium Chloride; Sodium Lactate; Thiamine; Vitamin B 12 | 1984 |
Does a single vitamin B-supplementation induce functional vitamin B-deficiency?
Topics: Adult; Cystathionine; Cysteine; Dietary Supplements; Folic Acid; Gas Chromatography-Mass Spectrometry; Homocysteine; Humans; Male; Methionine; Methylmalonic Acid; Middle Aged; Models, Biological; Pilot Projects; Time Factors; Vitamin B 12; Vitamin B 6; Vitamin B Complex; Vitamin B Deficiency | 2001 |
A Western-style diet induces benign and malignant neoplasms in the colon of normal C57Bl/6 mice.
Topics: Adenoma; Animals; Body Weight; Bromodeoxyuridine; Cell Division; Choline; Colonic Neoplasms; Diet; Dietary Fats; Epithelium; Female; Folic Acid; Immunoenzyme Techniques; Intestine, Large; Liver; Male; Methionine; Methylation; Mice; Mice, Inbred C57BL; Vitamin B 12 | 2001 |
Low plasma levels of vitamin B(6) are independently associated with a heightened risk of deep-vein thrombosis.
Topics: Adolescent; Adult; Aged; Child; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Risk Factors; Venous Thrombosis; Vitamin B 12; Vitamin B 6 | 2001 |
Hyperhomocysteinaemia and folate deficiency in human immunodeficiency virus-infected children.
Topics: Adolescent; Anti-HIV Agents; Child; Child, Preschool; Female; Folic Acid Deficiency; HIV Infections; HIV-1; Homocysteine; Humans; Hyperhomocysteinemia; Infant; Male; Methionine; Statistics as Topic; Vitamin B 12 | 2001 |
Metabolism of amino acids in cats with severe cobalamin deficiency.
Topics: Amino Acids; Animals; Cat Diseases; Cats; Cystathionine; Cysteine; Female; Gastrointestinal Diseases; Homocysteine; Immunoassay; Male; Methionine; Methylmalonic Acid; Statistics, Nonparametric; Vitamin B 12; Vitamin B 12 Deficiency | 2001 |
Plasma folate but not vitamin B(12) or homocysteine concentrations are reduced after short-term vitamin B(6) supplementation.
Topics: Adult; Area Under Curve; Dietary Supplements; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Pyridoxal Phosphate; Pyridoxine; Vitamin B 12; Vitamin B 6 | 2001 |
Abnormal cobalamin-dependent transmethylation in AIDS-associated myelopathy.
Topics: Adult; Female; Glutathione; HIV Infections; Homocysteine; Humans; Male; Methionine; Methylation; Middle Aged; S-Adenosylmethionine; Spinal Cord Diseases; Vitamin B 12 | 2002 |
Niacin (nicotinic acid) in non-physiological doses causes hyperhomocysteineaemia in Sprague-Dawley rats.
Topics: Animals; Dietary Supplements; Dose-Response Relationship, Drug; Eating; Hyperhomocysteinemia; Liver; Male; Methionine; Niacin; Organ Size; Rats; Rats, Sprague-Dawley; Vitamin B 12; Vitamin B 6; Weight Gain | 2002 |
Electrochemical and spectral studies of the reactions of aquocobalamin with nitric oxide and nitrite ion.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Anions; Catalysis; Electrochemistry; Enzyme Inhibitors; Gas Chromatography-Mass Spectrometry; Homocysteine; Hydroxocobalamin; Magnetic Resonance Spectroscopy; Mass Spectrometry; Methionine; Molecular Structure; Nitric Oxide; Nitrites; Oxidation-Reduction; Spectrophotometry, Ultraviolet; Spectrum Analysis, Raman; Vitamin B 12 | 2002 |
Antisense inhibition of methylenetetrahydrofolate reductase reduces survival of methionine-dependent tumour lines.
Topics: Antineoplastic Agents; Breast Neoplasms; Carcinoma; Cell Line; Colonic Neoplasms; Enzyme Inhibitors; Exons; Female; Fibroblasts; Genetic Therapy; Homocysteine; Humans; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Neoplasm Proteins; Neuroblastoma; Oligodeoxyribonucleotides, Antisense; Oxidoreductases Acting on CH-NH Group Donors; RNA, Messenger; RNA, Neoplasm; Thionucleotides; Tumor Cells, Cultured; Vitamin B 12 | 2002 |
Folic acid and vitamin B(12) supplementation attenuates isoprenaline-induced myocardial infarction in experimental hyperhomocysteinemic rats.
Topics: Animals; Blood Pressure; Creatine Kinase; Folic Acid; Glutathione; Heart Rate; Hemodynamics; Hyperhomocysteinemia; Isoproterenol; L-Lactate Dehydrogenase; Lipid Peroxidation; Male; Malondialdehyde; Methionine; Myocardial Infarction; Myocardium; Oxidative Stress; Rats; Rats, Wistar; Vitamin B 12 | 2002 |
The effect of folic acid, vitamin B6 and vitamin B12 on the homocysteine levels in rabbits fed by methionine-enriched diets.
Topics: Animals; Diet; Dose-Response Relationship, Drug; Drug Combinations; Female; Folic Acid; Homocysteine; Hyperhomocysteinemia; Male; Methionine; Rabbits; Time Factors; Treatment Outcome; Vitamin B 12; Vitamin B 6 | 2002 |
Cobalamin deficiency with and without neurologic abnormalities: differences in homocysteine and methionine metabolism.
Topics: Anemia; Anemia, Pernicious; Cysteine; Dipeptides; Folic Acid; Glutathione; Homocysteine; Humans; Memory Disorders; Methionine; Movement Disorders; Nervous System Diseases; Retrospective Studies; S-Adenosylmethionine; Sensation Disorders; Vitamin B 12; Vitamin B 12 Deficiency | 2003 |
CblE type of homocystinuria due to methionine synthase reductase deficiency: clinical and molecular studies and prenatal diagnosis in two families.
Topics: Adult; Anemia, Megaloblastic; Base Sequence; Cells, Cultured; Child; Chromatography, Ion Exchange; DNA; Female; Ferredoxin-NADP Reductase; Fibroblasts; Folic Acid; Homocysteine; Homocystinuria; Humans; Methionine; Molecular Sequence Data; Mutation; Prenatal Diagnosis; Reverse Transcriptase Polymerase Chain Reaction; Serine; Vitamin B 12 | 2002 |
Relationship of folate, vitamin B-6, vitamin B-12, and methionine intake to incidence of colorectal cancers.
Topics: Aged; Alcohol Drinking; Cohort Studies; Colorectal Neoplasms; DNA Methylation; Female; Folic Acid; Humans; Incidence; Iowa; Methionine; Middle Aged; Risk Factors; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2002 |
Soy product intake is inversely associated with serum homocysteine level in premenopausal Japanese women.
Topics: Adult; Diet; Female; Folic Acid; Glycine max; Homocysteine; Humans; Isoflavones; Methionine; Middle Aged; Nutritional Status; Premenopause; Soybean Proteins; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2003 |
Hyperhomocysteinemia in cerebral vein thrombosis.
Topics: Adolescent; Adult; Case-Control Studies; Child; Female; Folic Acid; Homocystine; Humans; Hyperhomocysteinemia; Intracranial Thrombosis; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Oxidoreductases Acting on CH-NH Group Donors; Risk Factors; Thrombophilia; Venous Thrombosis; Vitamin B 12 | 2003 |
Determinants of hyperhomocysteinemia in patients with chronic liver disease and after orthotopic liver transplantation.
Topics: Adult; Area Under Curve; Case-Control Studies; Chronic Disease; Creatinine; Cross-Sectional Studies; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Liver Diseases; Liver Transplantation; Male; Metabolic Clearance Rate; Methionine; Middle Aged; Vitamin B 12; Vitamin B 6 | 2003 |
Changes in GE2270 antibiotic production in Planobispora rosea through modulation of methylation metabolism.
Topics: Actinomycetales; Adenosine; Anti-Bacterial Agents; Culture Media; Drug Interactions; Fermentation; Methionine; Methylation; Molecular Structure; Peptides; Peptides, Cyclic; Thiazoles; Vitamin B 12 | 2003 |
Factors modulating conformational equilibria in large modular proteins: a case study with cobalamin-dependent methionine synthase.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acid Substitution; Catalysis; Escherichia coli; Escherichia coli Proteins; Homocysteine; Methionine; Methylation; Mutation, Missense; Protein Binding; Protein Conformation; Protein Structure, Tertiary; Recombinant Fusion Proteins; S-Adenosylmethionine; Spectrophotometry, Ultraviolet; Structure-Activity Relationship; Substrate Specificity; Temperature; Tetrahydrofolates; Vitamin B 12 | 2003 |
Plasma thiols and their determinants in phenylketonuria.
Topics: Adolescent; Cross-Sectional Studies; Cysteine; Female; Folic Acid; Glutathione; Homocysteine; Humans; Male; Methionine; Phenylalanine; Phenylketonurias; Sulfhydryl Compounds; Vitamin B 12 | 2003 |
Effects of reducing dietary protein, methionine, choline, folic acid, and vitamin B12 during the late stages of the egg production cycle on performance and eggshell quality.
Topics: Animal Feed; Animal Husbandry; Animals; Chickens; Choline; Dietary Proteins; Egg Shell; Female; Folic Acid; Methionine; Ovum; Vitamin B 12 | 2003 |
Some effects of vitamin B12 in weanling rats consuming hypolipotropic diets.
Topics: Animals; Choline; Choline Deficiency; Corrinoids; Diet; Kidney; Methionine; Rats; Vitamin B 12 | 1953 |
The effect of cobalamin on the quantitative utilization of serine, glycine and formate for the synthesis of choline and methyl groups of methionine.
Topics: Choline; Fabaceae; Formates; Glycine; Hematinics; Methionine; Serine; Vitamin B 12 | 1953 |
Development of portal fatty liver in rats on corn diets; response to lipotropic agents.
Topics: Animals; Choline; Diet; Fatty Liver; Lipotropic Agents; Liver Diseases; Methionine; Rats; Vitamin B 12; Zea mays | 1954 |
Vitamin B12 and transmethylation in the baby pig.
Topics: Animals; Choline; Corrinoids; Methionine; Swine; Vitamin B 12; Vitamin B 12 Deficiency | 1954 |
The utilization by vitamin B12-deficient chicks of monomethylaminoethanol, homocystine and betaine as precursors of choline and methionine.
Topics: Amino Acids; Amino Alcohols; Animals; Betaine; Chickens; Choline; Homocystine; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1954 |
Effect of methionine, vitamin B12 and alpha-tocopherol on the growth-promoting and hepaticnecrogenic activity of Puerto Rican Torula yeast.
Topics: alpha-Tocopherol; Cryptococcus; Growth; Hispanic or Latino; Liver Diseases; Methionine; Vitamin B 12; Vitamin E | 1954 |
[Vitamin B12 and free methionine of the liver].
Topics: Biochemical Phenomena; Corrinoids; Hematinics; Liver; Methionine; Vitamin B 12 | 1955 |
Effect of dietary choline, methionine, and vit. B12 on weight and composition of eggs.
Topics: Body Weight; Choline; Diet; Eggs; Food; Methionine; Vitamin B 12 | 1955 |
The effect of copper on the response to vitamin B12 and methionine of a mutant strain of Escherichia coli.
Topics: Copper; Corrinoids; Escherichia coli; Hematinics; Methionine; Vitamin B 12 | 1955 |
[Vitamin B12 and methionine in blood serum of women during pregnancy and lactation].
Topics: Blood; Breast Feeding; Corrinoids; Female; Humans; Lactation; Methionine; Pregnancy; Serum; Vitamin B 12; Vitamin B Complex | 1955 |
Inhibition of Escherichia coli mutant and its reversal by B12 and methionine.
Topics: Corrinoids; Escherichia coli; Hematinics; Methionine; Molybdenum; Phenylhydrazines; Tungsten; Vitamin B 12 | 1955 |
[Biological therapy of cirrhosis].
Topics: Corrinoids; Diet; Humans; Liver Cirrhosis; Methionine; Vitamin B 12 | 1957 |
Vitamin B12 and folic acid in relation to methionine synthesis from betaine in vivo and invitro.
Topics: Betaine; Choline; Folic Acid; Folic Acid Deficiency; Humans; Methionine; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B Complex | 1957 |
The effect of copper on the response to vitamin B12 and methionine of a mutant strain of Escherichia coli: a modification of the basal medium.
Topics: Biochemical Phenomena; Copper; Corrinoids; Escherichia coli; Hematinics; Methionine; Vitamin B 12 | 1957 |
THE METABOLIC role of vitamin B12.
Topics: Humans; Methionine; Nucleic Acids; Vitamin B 12 | 1957 |
[Role of lipotrpic factors in the regulation of disorders of vitamin A metabolism].
Topics: Biochemical Phenomena; Corrinoids; Ether; Humans; Lipid Metabolism; Methionine; Vitamin A; Vitamin A Deficiency; Vitamin B 12 | 1957 |
Interrelationships among vitamin B12, and methionine and its analogues, in growth of Escherichia coli and in bacteriophage synthesis.
Topics: Bacteriophages; Corrinoids; Escherichia coli; Methionine; Organic Chemicals; Vitamin B 12 | 1958 |
VITAMIN B12 and methionine in E. coli.
Topics: Escherichia coli; Humans; Methionine; Vitamin B 12 | 1959 |
Methionine, homocystine, choline, folic acid and vitamin B12 in the nutrition of the mouse.
Topics: Animals; Choline; Cystine; Folic Acid; Homocystine; Humans; Methionine; Mice; Nutritional Status; Vitamin B 12 | 1959 |
The effect of dietary fat vitamin B12-methionine interrelationships.
Topics: Dietary Fats; Fats; Humans; Methionine; Research; Vitamin B 12 | 1959 |
[Effects of orotic acid and of methionine on the hepatic content of ribonucleic and desoxyribonucleic acids in vitamin B12 deficient chickens].
Topics: Animals; Chickens; DNA; Liver; Methionine; Nucleic Acids; Orotic Acid; Vitamin A; Vitamin B 12; Vitamin B 12 Deficiency | 1960 |
The purification and properties of a factor containing vitamin B12 concerned in the synthesis of methionine by Escherichia coli.
Topics: Escherichia coli; Hematinics; Methionine; Proteins; Vitamin B 12 | 1961 |
Cobalamin and the enzymic formation of a factor concerned in the synthesis of methionine by Escherichia coli.
Topics: Escherichia coli; Methionine; Vitamin B 12 | 1960 |
Further studies on the relationship of vitamin B12 to methionine synthesis in extracts of Escherichia coli.
Topics: Corrinoids; Escherichia coli; Methionine; Vitamin B 12 | 1961 |
[Acid-soluble nucleotides of the liver of chickens fed a vitamin B12 deficient diet: effects of orotic acid and of methionine].
Topics: Animals; Chickens; Diet; Liver; Meat; Methionine; Nucleosides; Nucleotides; Orotic Acid; Vitamin B 12; Vitamin B 12 Deficiency | 1960 |
Effects of dietary methionine and vitamin B12 on the net synthesis of choline in rats.
Topics: Animals; Choline; Corrinoids; Diet; Methionine; Rats; Reticular Formation; Vitamin B 12 | 1961 |
[Orotic acid as a "growth factor" for the chicken and its relation of vitamin B-12 and methionine].
Topics: Animals; Chickens; Corrinoids; Hematinics; Intercellular Signaling Peptides and Proteins; Meat; Methionine; Orotic Acid; Vitamin B 12; Vitamin B 12 Deficiency; Vitamins | 1960 |
Enzymatic synthesis of the methyl group of methionine. III. Spectral and electrophoretic studies of the prosthetic group of the B12 enzyme.
Topics: Electrophoresis; Enzymes; Methionine; Vitamin B 12 | 1961 |
Enzymatic synthesis of the methyl group of methionine. II. Involvement of vitamin B12.
Topics: Corrinoids; Enzymes; Escherichia coli; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1961 |
Vitamin B12 requirement of a marine blue-green alga.
Topics: Cobamides; Corrinoids; Eukaryota; Methionine; Vitamin B 12 | 1961 |
Metabolism of formiminoglutamic acid by vitamin B12 and folic acid-deficient rats fed excess methionine.
Topics: Animals; Corrinoids; Folic Acid; Folic Acid Deficiency; Formiminoglutamic Acid; Glutamates; Methionine; Rats; Vitamin B 12; Vitamin B 12 Deficiency | 1960 |
Methionine, iodocasein and oxygen consumption of chicks.
Topics: Animals; Caseins; Chickens; Iodoproteins; Metabolism; Methionine; Oxygen Consumption; Vitamin B 12 | 1959 |
Inhibition of methionine synthesis in Escherichia coli by analogues of cobalamin.
Topics: Escherichia coli; Methionine; Vitamin B 12 | 1960 |
Cobalamin and the synthesis of methionine by ultrasonic extracts of Escherichia coli.
Topics: Escherichia coli; Hematinics; Methionine; Ultrasonics; Vitamin B 12 | 1960 |
VITAMIN B12, methionine and fat.
Topics: Diet; Fats; Feeding Behavior; Humans; Methionine; Nutrition Assessment; Nutritional Status; Vitamin B 12 | 1960 |
Liver ribonuclease and deoxyribonuclease activity of vitamin B12-deficient chicks: effects of orotic acid and methionine.
Topics: Animals; Biochemical Phenomena; Chickens; Deoxyribonucleases; DNA; Liver; Methionine; Orotic Acid; Ribonucleases; Vitamin B 12; Vitamin B 12 Deficiency | 1962 |
Excretion of formiminoglutamic acid as an index of vitamin B12, folic acid, and methionine deficiencies.
Topics: Corrinoids; Folic Acid; Folic Acid Deficiency; Formiminoglutamic Acid; Glutamates; Hematinics; Humans; Methionine; Vitamin B 12; Vitamin B 12 Deficiency | 1961 |
[Effect of orotic acid add methionine on the incorporation of P-32 into the acid-soluble nucleotides of the liver of the vitamin B12-deficient chick].
Topics: Animals; Chickens; Liver; Methionine; Nucleotides; Orotic Acid; Phosphorus; Vitamin B 12; Vitamin B 12 Deficiency | 1961 |
On the role of cobalamin in methionine synthesis of E. coli 113-3.
Topics: Escherichia coli; Methionine; Vitamin B 12 | 1963 |
The B12 vitamins and methionine in the metabolism of Prymnesium parvum.
Topics: Animals; Corrinoids; Eukaryota; Haptophyta; Hematinics; Invertebrates; Methionine; Vitamin B 12; Vitamins | 1963 |
[On the therapy and biochemistry of cystinosis].
Topics: Biochemistry; Cholecalciferol; Citric Acid Cycle; Corrinoids; Cysteine; Cystinosis; Hematinics; Methionine; Pyruvates; Sulfhydryl Compounds; Vitamin B 12 | 1963 |
On the biosynthesis of vitamin B-12. The derivation of the corrin structure from 5-aminolevulinic acid and the methyl group of methionine.
Topics: Amino Acids; Aminolevulinic Acid; Corrinoids; Levulinic Acids; Methionine; Vitamin B 12; Vitamins | 1963 |
[On the treatment of the premenstrual syndrome and menstruation disorders by means of hepatic therapy].
Topics: Cysteine; Female; Gluconates; Humans; Liver Diseases; Liver Extracts; Menstruation Disturbances; Methionine; Niacin; Niacinamide; Premenstrual Syndrome; Thioctic Acid; Vitamin B 12; Vitamin B Complex | 1963 |
[OUR EXPERIENCE WITH THE TREATMENT OF HEMOLYTIC DISEASE OF THE NEWBORN CAUSED BY RH ISOIMMUNIZATION].
Topics: Adrenal Cortex Hormones; Adrenocorticotropic Hormone; Choline; Erythroblastosis, Fetal; Exchange Transfusion, Whole Blood; Fetus; Humans; Infant; Infant, Newborn; Methionine; Oxygen Inhalation Therapy; Rh Isoimmunization; Vitamin B 12 | 1963 |
VITAMIN B12 AND THE NUTRITIVE VALUE OF RAW SOYABEAN.
Topics: Caseins; Enzyme Inhibitors; Glycine max; Methionine; Nutritive Value; Proteins; Rats; Research; Trypsin; Vitamin B 12 | 1963 |
EFFECT OF OROTIC ACID ON THE SYNTHESIS OF CITROVORUM FACTOR AND OF METHIONINE IN LIVER OF THE CHICK.
Topics: Animals; Chickens; Corrinoids; Folic Acid; Leuconostoc; Leucovorin; Liver; Meat; Metabolism; Methionine; Orotic Acid; Pharmacology; Poultry; Proteins; Research; Vitamin B 12 | 1963 |
COBALAMIN AND THE SYNTHESIS OF METHIONINE BY ESCHERICHIA COLI.
Topics: Corrinoids; Escherichia coli; Metabolism; Methionine; Proteins; Research; Vitamin B 12 | 1964 |
ERIODICTYOL GLYCOSIDE IN THE TREATMENT OF MENI'ERE'S DISEASE.
Topics: Ascorbic Acid; Choline; Deafness; Flavanones; Flavonoids; Glycosides; Inositol; Meniere Disease; Methionine; Niacin; Nicotinic Acids; Pantothenic Acid; Pyridoxine; Riboflavin; Thiamine; Vitamin B 12 | 1963 |
[TREATMENT OF ARTERIOSCLEROSIS].
Topics: Androsterone; Arteriosclerosis; Cholesterol; Diet; Diet Therapy; Estrogens; Flavonoids; Heparin; Lipids; Methionine; Sterols; Thyroxine; Vitamin B 12 | 1963 |
[2 SIMULTANEOUS CASES OF THALLIUM POISONING].
Topics: Cysteine; Dimercaprol; Gastric Lavage; Heavy Metal Poisoning; Humans; Iodides; Magnesium Sulfate; Metals, Heavy; Methionine; Poisoning; Thallium; Thiamine; Toxicology; Vitamin B 12 | 1963 |
EFFECT OF VITAMIN B12 ANALOGUES ON METHIONINE FORMATION FROM N5-METHYLTETRAHYDROFOLIC ACID.
Topics: Carbon Isotopes; Corrinoids; Escherichia coli; Folic Acid; Homocysteine; Methionine; Pharmacology; Proteins; Research; Sulfhydryl Compounds; Vitamin B 12 | 1964 |
REQUIREMENT OF SPHAEROTILUS FOR CYANOCOBALAMIN.
Topics: Ammonia; Caseins; Culture Media; DNA; DNA, Bacterial; Glutamates; Glycerol; Metabolism; Methionine; Nitrogen; Pharmacology; Research; Sphaerotilus; Vitamin B 12; Yeasts | 1964 |
OROTIC ACID AND METABOLISM OF ONE CARBON UNIT: CONVERSION OF FOLIC ACID TO CITROVORUM FACTOR AND METHIONINE SYNTHESIS IN CHICK LIVER.
Topics: Animals; Carbon; Chickens; Folic Acid; Homocysteine; Leuconostoc; Leucovorin; Liver; Metabolism; Methionine; Orotic Acid; Poultry; Proteins; Research; Serine; Vitamin B 12; Vitamin B 12 Deficiency | 1963 |
EFFECT OF METHIONINE, VITAMIN B12 AND ANTIBIOTICS SUPPLEMENTATION ON PROTEIN NUTRITIVE VALUE OF NAVY BEANS.
Topics: Anti-Bacterial Agents; Dietary Proteins; Fabaceae; Growth; Methionine; Nutritional Physiological Phenomena; Nutritional Sciences; Nutritional Status; Nutritive Value; Penicillin G; Penicillin G Procaine; Pharmacology; Plant Proteins; Procaine; Proteins; Rats; Research; Streptomycin; Vegetables; Vitamin B 12 | 1964 |
THE BIOSYNTHESIS OF THE CORRIN STRUCTURE OF VITAMIN B12.
Topics: Acetates; Amino Acids; Carbon Isotopes; Choline; Corrinoids; Levulinic Acids; Metabolism; Methionine; Porphyrins; Research; Streptomyces; Vitamin B 12 | 1964 |
THE ROLE OF VITAMIN B12 IN METHYL TRANSFER TO HOMOCYSTEINE.
Topics: Chromatography; Escherichia coli; Flavin-Adenine Dinucleotide; Folic Acid; Homocysteine; Magnesium Sulfate; Mercaptoethanol; Methionine; Nucleosides; Pharmacology; Proteins; Research; Spectrophotometry; Sulfhydryl Compounds; Vitamin B 12 | 1964 |
METHYLCOBALAMIN AS A SOURCE OF THE METHYL GROUP OF METHIONINE.
Topics: Adenosine Triphosphate; Carbon Isotopes; Chromatography; Escherichia coli; Homocysteine; Methionine; Pharmacology; Proteins; Research; Vitamin B 12 | 1964 |
STUDIES ON THE ROLE OF VITAMIN B12 FOR THE SYNTHESIS OF METHIONINE IN LIVER.
Topics: Animals; Carbon Isotopes; Chromatography; Folic Acid; Liver; Meat; Methionine; Pharmacology; Poultry; Proteins; Rats; Research; Swine; Vitamin B 12; Vitamin B 12 Deficiency | 1964 |
ACTIVITY OF CYANOCOBALAMIN, DIMETHYLBENZIMIDA-ZOLYLCOBAMIDE COENZYME AND SOME OF THEIR ANALOGUES FOR THE METABOLISM OF OCHROMONAS MALHAMENSIS.
Topics: Amides; Anilides; Aspartic Acid; Benzimidazoles; Carbohydrate Metabolism; Carbon Isotopes; Coenzymes; Eukaryota; Flavobacterium; Formates; Glucose; Metabolism; Methionine; Ochromonas; Organic Chemicals; Pharmacology; Phenylalanine; Propionates; Proteins; Research; Vitamin B 12 | 1964 |
[STUDIES ON METHIONINE METABOLISM. 2. EXCRETION OF METHIONINE AND SULFUR IN THE URINE].
Topics: Adolescent; Amino Acids; Corrinoids; Humans; Liver Diseases; Methionine; Sulfur; Tuberculosis; Urine; Vitamin B 12 | 1963 |
STUDIES ON METHYL TRANSFER FROM 5,6-DIMETHYLBENZIMIDAZOLYLCOBAMIDE METHYL (METHYL-B12) TO HOMOCYSTEINE.
Topics: Carbon Isotopes; Chromatography; Corrinoids; Escherichia coli; Homocysteine; Methionine; Research; Spectrophotometry; Transferases; Vitamin B 12 | 1964 |
ENZYMATIC SYNTHESIS OF THE METHYL GROUP OF METHIONINE. VII. ISOLATION OF A COBALAMIN-CONTAINING TRANSMETHYLASE (5-METHYLTETRAHYDRO-FOLATE-HOMOCYSTEINE) FROM MAMMALIAN LIVER.
Topics: Animals; Chromatography; Corrinoids; Flavin-Adenine Dinucleotide; Folic Acid; Glutamates; Homocysteine; Liver; Methionine; Methyltransferases; NAD; NADP; Protamines; Research; Swine; Transferases; Vitamin B 12 | 1964 |
THE ROLE OF ADENOSYLMETHIONINE AND 5-METHYLTETRAHYDROFOLATE IN THE REGULATION OF THE METABOLISM OF SINGLE CARBON UNITS.
Topics: Anemia; Anemia, Macrocytic; Carbon; Folic Acid; Humans; Metabolism; Methionine; Nucleosides; Tetrahydrofolates; Vitamin B 12 | 1964 |
THE ROLE OF VITAMIN B12 IN METHIONINE BIOSYNTHESIS IN AVIAN LIVER.
Topics: Amino Acids; Animals; Birds; Coenzymes; Corrinoids; Flavin Mononucleotide; Flavin-Adenine Dinucleotide; Folic Acid; Homocysteine; Liver; Methionine; Poultry; Research; Transferases; Vitamin B 12 | 1964 |
VITAMIN B12 AND THE SYNTHESIS OF THE METHYL GROUPS OF CHOLINE IN OCHROMONAS MALHAMENSIS.
Topics: Alkylation; Carbon Isotopes; Choline; Coenzymes; Eukaryota; Formaldehyde; Formates; Homocysteine; Metabolism; Methionine; Ochromonas; Radiometry; Research; Tritium; Vitamin B 12 | 1964 |
ATTEMPTS AT VISUALIZATION OF THE PARATHYROID AND PANCREAS BY PHOTOSCANNING.
Topics: Adenoma; Cobalt Isotopes; Corrinoids; Geriatrics; Humans; Methionine; Pancreas; Parathyroid Glands; Parathyroid Neoplasms; Photography; Radioisotopes; Radionuclide Imaging; Selenium; Vitamin B 12 | 1964 |
CYANIDE FORMATION BY CHROMOBACTERIUM VIOLACEUM.
Topics: 2,4-Dinitrophenol; Amino Acids; Azides; Choline; Chromobacterium; Cyanides; Dinitrophenols; Fumarates; Glutamates; Glycine; Malates; Metabolism; Methionine; Pharmacology; Research; Succinates; Vitamin B 12 | 1965 |
[USE OF ESCHERICHIA COLI MUTANTS FOR THE DETERMINATION OF METHIONINE AND LYSINE IN AGAR].
Topics: Agar; Biological Assay; Corrinoids; Escherichia coli; Hematinics; Lysine; Methionine; Research; Vitamin B 12 | 1964 |
ENZYMATIC SYNTHESIS OF THE METHYL GROUP OF METHIONINE. 8. REPRESSION-DEREPRESSION, PURIFICATION, AND PROPERTIES OF 5,10-METHYLENETETRAHYDROFOLATE REDUCTASE FROM ESCHERICHIA COLI.
Topics: Alkylation; Amino Acids; Anemia; Anemia, Pernicious; Biochemical Phenomena; Biochemistry; Chemistry Techniques, Analytical; Chromatography; Enzyme Inhibitors; Enzyme Repression; Escherichia coli; Feedback; Flavin-Adenine Dinucleotide; Folic Acid; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Mutation; Oxidoreductases; Research; Spectrophotometry; Tetrahydrofolates; Vitamin B 12 | 1965 |
STUDIES ON METHIONINE BIOSYNTHESIS. EFFECT OF ALKYLCOBAMIDE DERIVATIVES ON THE FORMATION OF HOLOENZYME.
Topics: Amino Acids; Chemical Phenomena; Chemistry; Corrinoids; Dinitrophenols; Enzyme Inhibitors; Escherichia coli; Folic Acid; Holoenzymes; Homocysteine; Light; Metabolism; Methionine; Research; Transferases; Vitamin B 12 | 1965 |
VITAMIN REQUIREMENTS OF SEVERAL CELLULOLYTIC RUMEN BACTERIA.
Topics: 4-Aminobenzoic Acid; Amino Acids; Animals; Bacteria; Bacteroides; Biotin; Caseins; Cattle; Cellulose; Culture Media; Fermentation; Fibrobacter; Folic Acid; Metabolism; Methionine; Protein Hydrolysates; Research; Rumen; Ruminococcus; Vitamin B 12; Vitamin B Complex; Vitamins | 1965 |
A MECHANISM OF HYPERTROPHY AND WEAR OF THE MYOCARDIUM.
Topics: Adenosine Triphosphatases; Adenosine Triphosphate; Animals; Aortic Valve Stenosis; Cardiomegaly; Cardiomyopathies; DNA; Dogs; Folic Acid; Humans; Hypertrophy; Methionine; Muscle Proteins; Myocardium; Nucleic Acids; Nucleosides; Orotic Acid; Pharmacology; Rabbits; Rats; Research; Strophanthins; Vitamin B 12 | 1965 |
THE FORMATION OF CH4 FROM N-5-METHYLTETRAHYDROFOLATE MONOGLUTAMATE BY CELL-FREE EXTRACTS OF METHANOBACILLUS OMELIANSKII.
Topics: Adenosine Triphosphate; Autoradiography; Bacteria; Carbon Isotopes; Chemical Phenomena; Chemistry; Chromatography; Glutamates; Homocysteine; Methane; Methionine; Research; Spectrophotometry; Tetrahydrofolates; Vitamin B 12 | 1965 |
INTERRELATIONS BETWEEN TWO PATHWAYS OF METHIONINE BIOSYNTHESIS IN AEROBACTER AEROGENES.
Topics: Amino Acids; Biochemical Phenomena; Chemistry Techniques, Analytical; Corrinoids; Culture Media; Enterobacter aerogenes; Enzyme Inhibitors; Escherichia coli; Folic Acid; Metabolism; Methionine; Pharmacology; Research; Transferases; Vitamin B 12 | 1965 |
ADENOSYLMETHIONINE ELEVATION IN LEUKEMIC WHITE BLOOD CELLS.
Topics: Antimetabolites; Biochemical Phenomena; Biochemistry; Drug Therapy; Humans; Leukemia; Leukemia, Myeloid; Leukocyte Count; Leukocytes; Lymphocytes; Methionine; Nucleosides; S-Adenosylmethionine; Vitamin B 12 | 1965 |
ENZYMATIC SYNTHESIS OF METHIONINE. CHEMICAL ALKYLATION OF THE ENZYME-BOUND COBAMIDE.
Topics: Alkylation; Chemical Phenomena; Chemistry; Cobamides; Corrinoids; Enzyme Inhibitors; Escherichia coli; Iodides; Light; Liver; Methionine; Rats; Research; Transferases; Vitamin B 12 | 1965 |
Vitamin B12 and transmethylation in pig, chick, and rat liver homogenates.
Topics: Animals; Chickens; Corrinoids; Creatine; Liver; Methionine; Rats; Sus scrofa; Swine; Vitamin B 12; Vitamin B 12 Deficiency | 1955 |
Fatty liver of portal type: effects of choline, methionine, and vitamin B12.
Topics: Choline; Fatty Liver; Liver Diseases; Methionine; Vitamin B 12; Vitamin B Complex | 1955 |
Interrelationships between folic acid and cobalamin in the synthesis of methionine by extracts of Escherichia coli.
Topics: Escherichia coli; Folic Acid; Humans; Methionine; Vitamin B 12 | 1960 |
Effects of orotic acid and methionine on acid-soluble nucleotides of vitamin B12-deficient chicks.
Topics: Animals; Chickens; Liver; Methionine; Nucleosides; Nucleotides; Orotic Acid; Vitamin B 12; Vitamin B 12 Deficiency | 1962 |
Alkaline phosphatase formation in Escherichia coli vitamin B12/methionine auxotroph.
Topics: Alkaline Phosphatase; Coloring Agents; Corrinoids; Escherichia coli; Hematinics; Methionine; Phosphoric Monoester Hydrolases; Vitamin B 12 | 1962 |
Polyamine concentrations in the brain of vitamin B12-deficient rats.
Topics: Animals; Brain; Homocysteine; Liver; Male; Methionine; Neurons; Polyamines; Putrescine; Rats; Rats, Wistar; Spermidine; Spermine; Vitamin B 12; Vitamin B 12 Deficiency | 2003 |
The atherogenic effect of excess methionine intake.
Topics: Animals; Aorta; Apolipoproteins E; Arteriosclerosis; Diet; Homocysteine; Hyperhomocysteinemia; Male; Methionine; Mice; Models, Biological; Vitamin B 12; Vitamin B 6; Vitamin B Deficiency | 2003 |
Plasma homocysteine after insulin infusion in type II diabetic patients with and without methionine intolerance.
Topics: Blood Glucose; Cysteine; Diabetes Mellitus, Type 2; DNA; Female; Folic Acid; Glucose Clamp Technique; Homocysteine; Humans; Hyperhomocysteinemia; Insulin; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Point Mutation; Polymerase Chain Reaction; Vitamin B 12; Vitamin B 6 | 2004 |
Vitamin B12 and growth of rats on diets free of methionine and choline.
Topics: Animals; Choline; Corrinoids; Diet; Growth; Methionine; Rats; Vitamin B 12 | 1950 |
ROLE of vitamin B12 in metabolism of methionine.
Topics: Humans; Methionine; Vitamin B 12 | 1950 |
[Comparison of anabolic and hemopoietic effects of vitamin B12, methionine and an anti-pernicious anemia liver extract on the repair of protein depletion; evidence of 2 physiologically different fractions in the vitamin B12 molecule].
Topics: Anemia, Pernicious; Blood Proteins; Corrinoids; Hematinics; Hematopoietic System; Liver; Liver Extracts; Methionine; Vitamin B 12 | 1951 |
Influence of vitamin B12 and folacin on the synthesis of choline and methionine by the rat.
Topics: Animals; Biochemical Phenomena; Choline; Corrinoids; Folic Acid; Hematinics; Methionine; Rats; Vitamin B 12 | 1951 |
The relationship of dietary factors to rat serum alkaline phosphatase. II. The effect of total food consumption, methionine, choline, and vitamin B12 in normal and alloxan diabetic adult rats.
Topics: Alkaline Phosphatase; Alloxan; Animals; Choline; Corrinoids; Diabetes Mellitus, Experimental; Hematinics; Methionine; Phosphoric Monoester Hydrolases; Rats; Vitamin B 12 | 1952 |
The excretion of N1-methylnicotinamide and creatinine as influenced by vitamin B12 and various methyl donors.
Topics: Creatinine; Methionine; Niacin; Niacinamide; Vitamin B 12 | 1952 |
Prevention of DL-methionine toxicity in rats by vitamins E, B12, folacin, glycine and arginine.
Topics: Animals; Arginine; Atropine; Corrinoids; Folic Acid; Glycine; Glycine Agents; Hematinics; Methionine; Rats; Vitamin B 12; Vitamin B Complex; Vitamin E; Vitamins | 1951 |
Effect of aureomycin on diarrhea the vitamin B12 and methionine needs of the pig.
Topics: Animals; Chlortetracycline; Diarrhea; Methionine; Swine; Vitamin B 12 | 1952 |
The role of B12 in methionine synthesis in E. coli.
Topics: Biochemical Phenomena; Escherichia coli; Methionine; Vitamin B 12 | 1952 |
Methionine metabolism in plants: chloroplasts are autonomous for de novo methionine synthesis and can import S-adenosylmethionine from the cytosol.
Topics: Arabidopsis; Blotting, Western; Chloroplasts; Cloning, Molecular; Cytosol; Diffusion; DNA, Complementary; Dose-Response Relationship, Drug; Escherichia coli; Green Fluorescent Proteins; Homocysteine; Immunoblotting; Kinetics; Luminescent Proteins; Methionine; Mitochondria; Models, Biological; Molecular Sequence Data; Phylogeny; Pisum sativum; Plastids; Protein Isoforms; S-Adenosylmethionine; Time Factors; Vitamin B 12 | 2004 |
Young stroke and basal plasma and post-methionine load homocysteine and cysteine levels 1 year after the acute event: do plasma folates make the difference?
Topics: Adult; Case-Control Studies; Cysteine; Fasting; Female; Folic Acid; Follow-Up Studies; Homocysteine; Humans; Male; Methionine; Middle Aged; Stroke; Time Factors; Vitamin B 12 | 2004 |
Effect of age on plasma homocysteine concentrations in young and elderly subjects considering serum vitamin concentrations and different lifestyle factors.
Topics: Adult; Aged; Aged, 80 and over; Aging; Alcohol Drinking; Coffee; Female; Folic Acid; Germany; Homocysteine; Humans; Life Style; Linear Models; Longitudinal Studies; Male; Methionine; Middle Aged; Nutritional Status; Pyridoxal Phosphate; Sex Characteristics; Smoking; Tea; Vitamin B 12 | 2004 |
The cblD defect causes either isolated or combined deficiency of methylcobalamin and adenosylcobalamin synthesis.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adolescent; Alkyl and Aryl Transferases; Child; Child, Preschool; Cobamides; DNA, Complementary; Fibroblasts; Genetic Complementation Test; Homocysteine; Homocystinuria; Humans; Male; Methionine; Methylmalonyl-CoA Mutase; Models, Biological; Mutation; Phenotype; Vitamin B 12; Vitamin B 12 Deficiency | 2004 |
Homocysteine increases methionine synthase mRNA level in Caco-2 cells.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adenocarcinoma; Caco-2 Cells; Gene Expression Regulation, Neoplastic; Homocysteine; Humans; Methionine; RNA, Messenger; Transcription, Genetic; Up-Regulation; Vitamin B 12 | 2004 |
Crystal structures of cobalamin-independent methionine synthase complexed with zinc, homocysteine, and methyltetrahydrofolate.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Arabidopsis; Binding Sites; Cations; Crystallography, X-Ray; Cysteine; Escherichia coli; Folic Acid; Fourier Analysis; Histidine; Homocysteine; Methionine; Methyltransferases; Models, Molecular; Plasmids; Protein Conformation; Protein Structure, Tertiary; Sulfur; Tetrahydrofolates; Vitamin B 12; Zinc | 2004 |
VITAMIN B12 and methionine formation.
Topics: Biochemical Phenomena; Corrinoids; Hematinics; Methionine; Vitamin B 12 | 1950 |
Mutants of Escherichia coli requiring methionine or vitamin B12.
Topics: Bacteria; Corrinoids; Escherichia coli; Methionine; Vitamin B 12 | 1950 |
Oxidative stress inactivates cobalamin-independent methionine synthase (MetE) in Escherichia coli.
Topics: Circular Dichroism; Cysteine; Disulfides; Escherichia coli; Escherichia coli Proteins; Glutathione; Glutathione Disulfide; Hydrogen Peroxide; Isoelectric Focusing; Mass Spectrometry; Methionine; Methyltransferases; Models, Biological; Models, Chemical; Molecular Sequence Data; Oxidative Stress; Oxygen; Protein Conformation; Temperature; Trypsin; Vitamin B 12; Zinc | 2004 |
Reconstruction of regulatory and metabolic pathways in metal-reducing delta-proteobacteria.
Topics: Bacterial Proteins; Base Sequence; Biological Transport; Biotin; Carbon Monoxide; Deltaproteobacteria; Desulfovibrio; Energy Metabolism; Gene Expression Regulation, Bacterial; Heat-Shock Proteins; Homeostasis; Iron-Sulfur Proteins; Lysine; Metals; Methionine; Molecular Sequence Data; Oxidation-Reduction; Oxidative Stress; Regulon; Riboflavin; Sulfates; Thiamine; Vitamin B 12 | 2004 |
Betaine and folate status as cooperative determinants of plasma homocysteine in humans.
Topics: Adult; Aged; Betaine; Choline; Creatinine; Dose-Response Relationship, Drug; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Middle Aged; Sarcosine; Vitamin B 12; Vitamin B 6 | 2005 |
Metabolic biomarkers of increased oxidative stress and impaired methylation capacity in children with autism.
Topics: Adenosine; Autistic Disorder; Betaine; Biomarkers; Case-Control Studies; Child; Chromatography, High Pressure Liquid; Cystathionine; Cysteine; Female; Glutathione; Homocysteine; Humans; Leucovorin; Male; Methionine; Methylation; Oxidative Stress; S-Adenosylhomocysteine; S-Adenosylmethionine; Vitamin B 12 | 2004 |
Effects of dietary supplements of folic acid and rumen-protected methionine on lactational performance and folate metabolism of dairy cows.
Topics: Animals; Cattle; Cysteine; Diet; Dietary Supplements; Female; Folic Acid; Hemoglobins; Homocysteine; Kinetics; Lactation; Methionine; Milk; Rumen; Vitamin B 12 | 2005 |
Effects of intramuscular injections of vitamin B12 on lactation performance of dairy cows fed dietary supplements of folic acid and rumen-protected methionine.
Topics: Animals; Cattle; Cysteine; Diet; Dietary Supplements; Eating; Female; Folic Acid; Homocysteine; Injections, Intramuscular; Lactation; Methionine; Methylmalonic Acid; Milk; Parity; Rumen; Vitamin B 12 | 2005 |
Disturbed homocysteine and methionine cycle intermediates S-adenosylhomocysteine and S-adenosylmethionine are related to degree of renal insufficiency in type 2 diabetes.
Topics: Aged; Cystathionine; Cysteine; Diabetes Mellitus, Type 2; Diabetic Nephropathies; Female; Folic Acid; Homocysteine; Humans; Kidney; Kidney Failure, Chronic; Male; Methionine; Methylmalonic Acid; Middle Aged; S-Adenosylhomocysteine; S-Adenosylmethionine; Transcobalamins; Vitamin B 12; Vitamin B 6 | 2005 |
Creatine metabolism in combined methylmalonic aciduria and homocystinuria.
Topics: Adult; Amino Acid Metabolism, Inborn Errors; Child; Child, Preschool; Creatine; Female; Glycine; Homocysteine; Homocystinuria; Humans; Male; Methionine; Methylmalonic Acid; Vitamin B 12 | 2005 |
Methimazole-induced hypothyroidism paradoxically decreases homocysteine.
Topics: Adolescent; Adult; Female; Fibrinogen; Folic Acid; Homocysteine; Humans; Hypothyroidism; Lipids; Logistic Models; Male; Methimazole; Methionine; Plasminogen Activator Inhibitor 1; Thyrotropin; Vitamin B 12; Vitamin B 6 | 2005 |
Homocysteine and cognition--no longer a hypothesis?
Topics: Aged; Alzheimer Disease; Cognition; Cognition Disorders; Homocysteine; Humans; Methionine; Models, Biological; Models, Theoretical; Neurodegenerative Diseases; Vitamin B 12; Vitamins | 2006 |
Moderate hyperhomocysteinemia and early-onset central retinal vein occlusion.
Topics: Adult; Aged; Chromatography, High Pressure Liquid; Fasting; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Male; Methionine; Middle Aged; Pyridoxal Phosphate; Retinal Vein Occlusion; Risk Factors; Vitamin B 12 | 2006 |
[The effect of methyl-containing supplements during pregnancy on the phenotypic modification of offspring hair color in rats].
Topics: Agouti Signaling Protein; Animals; Betaine; Choline; Color; Dietary Supplements; Electron Spin Resonance Spectroscopy; Female; Folic Acid; Hair Color; Heterozygote; Homozygote; Intercellular Signaling Peptides and Proteins; Male; Methionine; Phenotype; Pigments, Biological; Pregnancy; Rats; Vitamin B 12; Zinc | 2006 |
The association between atopy and factors influencing folate metabolism: is low folate status causally related to the development of atopy?
Topics: Adult; Cross-Sectional Studies; Diet; Female; Folic Acid; Genotype; Homocysteine; Humans; Hypersensitivity; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Multivariate Analysis; Polymorphism, Genetic; Riboflavin; Risk Assessment; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2006 |
Human methionine synthase reductase is a molecular chaperone for human methionine synthase.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Apoenzymes; Ferredoxin-NADP Reductase; Holoenzymes; Humans; Methionine; Molecular Chaperones; Oxidation-Reduction; Spectrum Analysis; Vitamin B 12 | 2006 |
Association of a 31 bp VNTR in the CBS gene with postload homocysteine concentrations in the Framingham Offspring Study.
Topics: Aged; Cohort Studies; Cystathionine beta-Synthase; Female; Folic Acid; Heterozygote; Homocysteine; Humans; Male; Methionine; Middle Aged; Minisatellite Repeats; Nuclear Family; Vitamin B 12; Vitamin B 6 | 2006 |
Body composition: an important determinant of homocysteine and methionine concentrations in healthy individuals.
Topics: Adipose Tissue; Adult; Body Composition; Body Water; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Life Style; Male; Menopause; Methionine; Middle Aged; Muscle, Skeletal; Risk Factors; Sex Factors; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2007 |
Mid-trimester amniotic fluid methionine concentrations: a predictor of birth weight and length.
Topics: Amniotic Fluid; Birth Weight; Body Height; Body Size; Female; Fetal Development; Folic Acid; Humans; Infant, Newborn; Male; Methionine; Predictive Value of Tests; Pregnancy; Pregnancy Trimester, Second; Vitamin B 12 | 2006 |
Dietary factors of one-carbon metabolism and prostate cancer risk.
Topics: Aged; Alcohol Drinking; alpha-Tocopherol; beta Carotene; Carbon; Case-Control Studies; Dietary Supplements; Double-Blind Method; Ethanol; Finland; Folic Acid; Humans; Male; Methionine; Middle Aged; One-Carbon Group Transferases; Proportional Hazards Models; Prospective Studies; Prostatic Neoplasms; Randomized Controlled Trials as Topic; Risk Assessment; Risk Factors; Smoking; Vitamin B 12; Vitamin B 6 | 2006 |
Colorectal cancer protective effects and the dietary micronutrients folate, methionine, vitamins B6, B12, C, E, selenium, and lycopene.
Topics: Antioxidants; Ascorbic Acid; Carotenoids; Case-Control Studies; Colorectal Neoplasms; Diet; Diet Surveys; DNA Methylation; Dose-Response Relationship, Drug; Female; Folic Acid; Humans; Lycopene; Male; Methionine; Micronutrients; Odds Ratio; Risk Factors; Selenium; Survival Analysis; Vitamin B 12; Vitamin B 6; Vitamin B Complex; Vitamin E; Vitamins | 2006 |
Dietary intake of folate and co-factors in folate metabolism, MTHFR polymorphisms, and reduced rectal cancer.
Topics: Adult; Aged; Alcohol Drinking; California; Case-Control Studies; Diet; Diet Surveys; Female; Folic Acid; Genetic Predisposition to Disease; Genotype; Humans; Logistic Models; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Odds Ratio; Polymorphism, Single Nucleotide; Rectal Neoplasms; Riboflavin; Risk; Utah; Vitamin B 12; Vitamin B 6 | 2007 |
Hyperhomocysteinemia and low methionine stress are risk factors for central retinal venous occlusion in an Indian population.
Topics: Adult; Case-Control Studies; Cysteine; Female; Folic Acid; Glutathione; Homocysteine; Humans; Hyperhomocysteinemia; India; Male; Methionine; Prevalence; Prospective Studies; Retinal Vein Occlusion; Risk Factors; Vitamin B 12 | 2007 |
Twenty-four non-synonymous polymorphisms in the one-carbon metabolic pathway and risk of colorectal adenoma in the Nurses' Health Study.
Topics: Adenoma; Adult; Alcohol Drinking; Betaine-Homocysteine S-Methyltransferase; Case-Control Studies; Colorectal Neoplasms; Diet; Female; Ferredoxin-NADP Reductase; Folic Acid; Genetics, Population; Humans; Methionine; Middle Aged; One-Carbon Group Transferases; Polymorphism, Single Nucleotide; Prospective Studies; Risk; Transcobalamins; Vitamin B 12 | 2007 |
Low vitamin B6, and not plasma homocysteine concentration, as risk factor for abdominal aortic aneurysm: a retrospective case-control study.
Topics: Aged; Aged, 80 and over; Aortic Aneurysm, Abdominal; Case-Control Studies; Creatinine; DNA Mutational Analysis; Fasting; Female; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Odds Ratio; Polymorphism, Genetic; Retrospective Studies; Risk Assessment; Risk Factors; Vitamin B 12; Vitamin B 6; Vitamin B 6 Deficiency | 2007 |
Consumption of folate-related nutrients and metabolism of arsenic in Bangladesh.
Topics: Adult; Arsenic; Arsenicals; Bangladesh; Cacodylic Acid; Choline; Cysteine; Dietary Proteins; Dose-Response Relationship, Drug; Environmental Exposure; Female; Folic Acid; Humans; Male; Methionine; Methylation; Middle Aged; Multivariate Analysis; Niacin; Surveys and Questionnaires; Vitamin B 12; Vitamin B Complex; Water Pollutants, Chemical | 2007 |
Low intake of vitamin B-6 is associated with increased risk of colorectal cancer in Japanese men.
Topics: Aged; Alcoholic Beverages; Colorectal Neoplasms; Diet; Diet Surveys; Female; Folic Acid; Follow-Up Studies; Humans; Japan; Male; Methionine; Middle Aged; Prospective Studies; Risk Factors; Vitamin B 12; Vitamin B 6 | 2007 |
Experimental hyperhomocysteinemia disturbs bone metabolism in rats.
Topics: Animals; Body Weight; Bone and Bones; Bone Density; Bone Resorption; Collagen Type I; Creatine; Female; Folic Acid; Homocysteine; Hydroxyproline; Hyperhomocysteinemia; Methionine; Osteocalcin; Osteogenesis; Peptides; Rats; Rats, Wistar; Vitamin B 12 | 2007 |
High folic acid increases cell turnover and lowers differentiation and iron content in human HT29 colon cancer cells.
Topics: Cell Differentiation; Cell Proliferation; Colonic Neoplasms; Dietary Supplements; Epithelial Cells; Folic Acid; Gene Expression Profiling; HT29 Cells; Humans; Iron; Methionine; Oligonucleotide Array Sequence Analysis; Tetrahydrofolates; Vitamin B 12; Vitamin B Complex | 2008 |
Oral challenge with a methionine load in patients with inflammatory bowel disease: a better test to identify hyperhomocysteinemia.
Topics: Administration, Oral; Adolescent; Adult; Aged; Aged, 80 and over; Chromatography, High Pressure Liquid; Enzyme-Linked Immunosorbent Assay; Female; Follow-Up Studies; Homocysteine; Humans; Hyperhomocysteinemia; Incidence; Inflammatory Bowel Diseases; Male; Methionine; Middle Aged; Prevalence; Prognosis; Prospective Studies; Risk Factors; Thrombosis; Vitamin B 12 | 2008 |
DNA methylation, insulin resistance, and blood pressure in offspring determined by maternal periconceptional B vitamin and methionine status.
Topics: Animals; Animals, Newborn; Blood Pressure; Body Composition; Diet; DNA Methylation; Embryo, Mammalian; Epigenesis, Genetic; Female; Fertilization; Folic Acid; Glucose; Heart Rate; Immunity; Insulin Resistance; Methionine; Pregnancy; Pregnancy Outcome; Sheep; Vitamin B 12; Vitamin B Complex | 2007 |
Nutrients involved in one-carbon metabolism and risk of breast cancer among premenopausal women.
Topics: Adult; Betaine; Breast Neoplasms; Choline; Diet; Female; Food; Humans; Metabolic Networks and Pathways; Methionine; Middle Aged; Premenopause; Pteroylpolyglutamic Acids; Risk Factors; Vitamin B 12; Vitamin B 6 | 2007 |
Effect of vitamin B12 and animal protein factor supplement on methionine needs of the pig.
Topics: Animals; Corrinoids; Dietary Supplements; Methionine; Proteins; Sus scrofa; Swine; Vitamin B 12 | 1949 |
H2O2/nitrite-induced post-translational modifications of human hemoglobin determined by mass spectrometry: redox regulation of tyrosine nitration and 3-nitrotyrosine reduction by antioxidants.
Topics: Amino Acid Sequence; Antioxidants; Ascorbic Acid; Cysteine; Hemin; Hemoglobins; Humans; Hydrogen Peroxide; Methionine; Molecular Sequence Data; Nitrates; Nitrites; Oxidation-Reduction; Peroxidase; Protein Processing, Post-Translational; Reactive Nitrogen Species; Spectrometry, Mass, Electrospray Ionization; Trypsin; Tyrosine; Vitamin B 12 | 2008 |
Plasma S-adenosylhomocysteine is a better biomarker of atherosclerosis than homocysteine in apolipoprotein E-deficient mice fed high dietary methionine.
Topics: Animals; Apolipoproteins E; Atherosclerosis; Biomarkers; Body Weight; Diet; DNA Methylation; Dose-Response Relationship, Drug; Folic Acid; Homocysteine; Male; Methionine; Mice; S-Adenosylhomocysteine; Vitamin B 12; Vitamin B 6 | 2008 |
Homocysteine concentration, related B vitamins, and betaine in pregnant women recruited to the Seychelles Child Development Study.
Topics: Adult; Betaine; Female; Fetal Blood; Folic Acid; Homocysteine; Humans; Infant, Newborn; Methionine; Parturition; Predictive Value of Tests; Pregnancy; Pregnancy Trimester, Third; Seychelles; Vitamin B 12; Vitamin B Complex | 2008 |
[Effect of Panax ginseng components on the differentiation of mouse embryonic stem cells into cardiac-like cells].
Topics: Animals; Cell Differentiation; Cells, Cultured; Embryonic Stem Cells; Methionine; Mice; Mice, Inbred Strains; Myocytes, Cardiac; Panax; Plant Extracts; Stimulation, Chemical; Vitamin B 12 | 2008 |
Associations of dietary methyl donor intake with MLH1 promoter hypermethylation and related molecular phenotypes in sporadic colorectal cancer.
Topics: Adaptor Proteins, Signal Transducing; Aged; Cohort Studies; Colorectal Neoplasms; Diet; DNA Methylation; DNA, Neoplasm; Female; Folic Acid; Humans; Male; Methionine; Microsatellite Repeats; Middle Aged; Mutation; MutL Protein Homolog 1; Netherlands; Nuclear Proteins; Phenotype; Promoter Regions, Genetic; Proto-Oncogene Proteins B-raf; Riboflavin; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2008 |
Methionine, folic acid and vitamin B12 in growing-finishing pigs: impact on growth performance and meat quality.
Topics: Animal Feed; Animal Nutritional Physiological Phenomena; Animals; Animals, Newborn; Body Composition; Dose-Response Relationship, Drug; Folic Acid; Homocysteine; Male; Meat; Methionine; Nutritional Requirements; Random Allocation; Swine; Vitamin B 12; Vitamin B Complex; Weight Gain | 2008 |
Severe methylenetetrahydrofolate reductase (MTHFR) deficiency: a case report of nonclassical homocystinuria.
Topics: Child; Developmental Disabilities; Female; Homocysteine; Homocystinuria; Humans; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Severity of Illness Index; Vitamin B 12 | 2008 |
Cobalamin deficiency results in an abnormal increase in L-methylmalonyl-co-enzyme-A mutase expression in rat liver and COS-7 cells.
Topics: Animals; Blotting, Western; Carnitine; Chlorocebus aethiops; COS Cells; Dietary Supplements; Gene Expression; Kidney; Liver; Methionine; Methylmalonyl-CoA Mutase; Random Allocation; Rats; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B Complex; Weaning | 2009 |
Mutation in the cobO gene generates auxotrophy for cobalamin and methionine and impairs the symbiotic properties of Sinorhizobium fredii HH103 with soybean and other legumes.
Topics: Amino Acid Sequence; Autotrophic Processes; Bacterial Proteins; Fabaceae; Methionine; Molecular Sequence Data; Mutation; Sequence Alignment; Sinorhizobium fredii; Symbiosis; Vitamin B 12 | 2009 |
Hypospadias and intake of nutrients related to one-carbon metabolism.
Topics: Carbon; Choline; Diet; Dietary Supplements; Female; Folic Acid; Humans; Hypospadias; Infant, Newborn; Male; Methionine; Pregnancy; Prenatal Nutritional Physiological Phenomena; Riboflavin; Thiamine; Vitamin B 12; Vitamin B 6; Zinc | 2009 |
Effects of supplements of folic acid, vitamin B12, and rumen-protected methionine on whole body metabolism of methionine and glucose in lactating dairy cows.
Topics: Animals; Body Weight; Cattle; Dairying; Dietary Supplements; Female; Folic Acid; Glucose; Injections, Intramuscular; Lactation; Methionine; Pregnancy; Rumen; Vitamin B 12 | 2009 |
Epigenetic modification of the gene for the vitamin B(12) chaperone MMACHC can result in increased tumorigenicity and methionine dependence.
Topics: Alleles; Carrier Proteins; Cell Line, Tumor; Cell Proliferation; CpG Islands; DNA Methylation; DNA, Complementary; Epigenesis, Genetic; Gene Expression Regulation, Neoplastic; Humans; Methionine; Molecular Chaperones; Neoplasm Proteins; Neoplasms; Oxidoreductases; Transfection; Vitamin B 12 | 2009 |
Dietary B vitamin and methionine intakes and plasma folate are not associated with colorectal cancer risk in Chinese women.
Topics: Adult; Aged; Case-Control Studies; China; Colorectal Neoplasms; Diet; Female; Folic Acid; Humans; Logistic Models; Methionine; Middle Aged; Niacinamide; Proportional Hazards Models; Prospective Studies; Registries; Riboflavin; Risk; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2009 |
Influence of methionine supply on the response of lactational performance of dairy cows to supplementary folic acid and vitamin B12.
Topics: Amino Acids; Animals; Blood Chemical Analysis; Cattle; Dairying; Diet; Female; Folic Acid; Injections, Intramuscular; Lactation; Methionine; Random Allocation; Vitamin B 12; Vitamin B Complex | 2009 |
Intake of folate, vitamins B6, B12 and methionine and risk of pancreatic cancer in a large population-based case-control study.
Topics: Adult; Aged; Aged, 80 and over; Carcinoma; Case-Control Studies; Diet Surveys; Eating; Female; Folic Acid; Humans; Male; Methionine; Micronutrients; Middle Aged; Pancreatic Neoplasms; Population; Risk Factors; Vitamin B 12; Vitamin B 6; Young Adult | 2009 |
[Methyl-containing diet of mothers affects the AGOUTI gene expression in the offspring of rats with various behavioral types].
Topics: Aggression; Agouti Signaling Protein; Animals; Behavior, Animal; Betaine; Choline; Dietary Supplements; Female; Folic Acid; Hair Color; Methionine; Pregnancy; Prenatal Exposure Delayed Effects; Rats; Selection, Genetic; Species Specificity; Vitamin B 12; Zinc | 2009 |
Change of epigenetic control of cystathionine beta-synthase gene expression through dietary vitamin B12 is not recovered by methionine supplementation.
Topics: Animals; Cells, Cultured; CpG Islands; Cystathionine beta-Synthase; Diet; Dietary Supplements; DNA Methylation; Epigenesis, Genetic; Gene Expression Regulation, Enzymologic; Liver; Male; Methionine; Models, Biological; Rats; Rats, Wistar; RNA, Messenger; Vitamin B 12; Vitamin B 12 Deficiency | 2009 |
Folic acid, vitamin B12, and homocysteine levels during fasting and after methionine load in patients with Type 1 diabetes mellitus.
Topics: Adolescent; Adult; Aging; Blood Glucose; Case-Control Studies; Child; Diabetes Mellitus, Type 1; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Sex Characteristics; Vitamin B 12; Young Adult | 2010 |
Newborn screening and early biochemical follow-up in combined methylmalonic aciduria and homocystinuria, cblC type, and utility of methionine as a secondary screening analyte.
Topics: Algorithms; Carnitine; Demography; False Positive Reactions; Female; Follow-Up Studies; Genetic Association Studies; Homocystinuria; Humans; Infant, Newborn; Male; Metabolism, Inborn Errors; Methionine; Methylmalonic Acid; Neonatal Screening; New York; Propionates; Referral and Consultation; Vitamin B 12 | 2010 |
Fasting and post-methionine homocysteine levels in Alzheimers disease and vascular dementia.
Topics: Aged; Alzheimer Disease; Case-Control Studies; Cohort Studies; Dementia, Vascular; Fasting; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Statistics, Nonparametric; Vitamin B 12 | 2009 |
Are dietary choline and betaine intakes determinants of total homocysteine concentration?
Topics: Betaine; Cardiovascular Diseases; Choline; Cognition Disorders; Diet; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Vitamin B 12; Vitamin B 6 | 2010 |
Effects of low methyl donor levels in culture medium during mouse follicle culture on oocyte imprinting establishment.
Topics: Analysis of Variance; Animals; Cells, Cultured; Choline; Chromatography, High Pressure Liquid; Culture Media; DNA Methylation; Female; Folic Acid; Genomic Imprinting; Methionine; Mice; Oocytes; Ovarian Follicle; Radioimmunoassay; Receptor, IGF Type 2; Reverse Transcriptase Polymerase Chain Reaction; RNA, Long Noncoding; RNA, Untranslated; snRNP Core Proteins; Vitamin B 12; Vitamin B 6 | 2010 |
Folate and other one-carbon metabolism-related nutrients and risk of postmenopausal breast cancer in the Cancer Prevention Study II Nutrition Cohort.
Topics: Aged; Alcohol Drinking; Breast Neoplasms; Cohort Studies; Female; Folic Acid; Humans; Methionine; Middle Aged; Postmenopause; Proportional Hazards Models; Prospective Studies; Surveys and Questionnaires; United States; Vitamin B 12; Vitamin B 6 | 2010 |
Effects of supplementary folic acid and vitamin B(12) on hepatic metabolism of dairy cows according to methionine supply.
Topics: Dairying; Diet; Dietary Supplements; Folic Acid; Gene Expression Regulation; Injections, Intramuscular; Lipid A; Liver; Methionine; Random Allocation; Time Factors; Vitamin B 12 | 2010 |
Severe In vivo hyper-homocysteinemia is not associatedwith elevation of amyloid-beta peptides in the Tg2576 mice.
Topics: Alzheimer Disease; Amyloid beta-Peptides; Amyloid beta-Protein Precursor; Animals; Cerebral Cortex; Disease Models, Animal; Enzyme-Linked Immunosorbent Assay; Gene Expression Regulation; Hippocampus; Humans; Hyperhomocysteinemia; Methionine; Mice; Mice, Transgenic; Peptide Fragments; Random Allocation; Vitamin B 12 | 2010 |
The reliability of methionine challenge test is not affected by a deficiency in pyridoxal phosphate, folic acid, or cobalamin.
Topics: Adult; Female; Folic Acid; Folic Acid Deficiency; Humans; Hyperhomocysteinemia; Methionine; Pregnancy; Pyridoxal Phosphate; Reproducibility of Results; Risk Factors; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B 6 Deficiency | 2011 |
Radical SAM activation of the B12-independent glycerol dehydratase results in formation of 5'-deoxy-5'-(methylthio)adenosine and not 5'-deoxyadenosine.
Topics: Catalysis; Deoxyadenosines; Electron Spin Resonance Spectroscopy; Enzyme Activation; Free Radicals; Glycine; Hydro-Lyases; Methionine; Oxidation-Reduction; S-Adenosylmethionine; Thionucleosides; Vitamin B 12 | 2011 |
A U-shaped relationship between plasma folate and pancreatic cancer risk in the European Prospective Investigation into Cancer and Nutrition.
Topics: Adult; Aged; Alcohol Drinking; Body Mass Index; Case-Control Studies; Cotinine; Diabetes Complications; DNA-Binding Proteins; Europe; Female; Flavin Mononucleotide; Folic Acid; Follow-Up Studies; Homocysteine; Humans; Logistic Models; Male; Methionine; Middle Aged; Odds Ratio; Pancreatic Neoplasms; Prospective Studies; Pyridoxal Phosphate; Riboflavin; Risk Factors; Sex Factors; Smoking; Transcription Factors; Vitamin B 12; Vitamin B Complex | 2011 |
Nutrients in folate-mediated, one-carbon metabolism and the risk of rectal tumors in men and women.
Topics: Adult; Aged; Case-Control Studies; CpG Islands; Diet; Dietary Supplements; DNA Methylation; Female; Folic Acid; Genetic Predisposition to Disease; Genotype; Humans; Logistic Models; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Mutation; Phenotype; Polymorphism, Genetic; Proto-Oncogene Proteins; Proto-Oncogene Proteins p21(ras); ras Proteins; Rectal Neoplasms; Riboflavin; Risk Factors; Sex Factors; Tumor Suppressor Protein p53; Vitamin B 12; Vitamin B 6 | 2011 |
Dietary folate, vitamin B6, vitamin B12 and methionine intake and the risk of breast cancer by oestrogen and progesterone receptor status.
Topics: Adult; Age Factors; Aged; Breast Neoplasms; Case-Control Studies; China; Diet; Female; Folic Acid; Humans; Methionine; Middle Aged; Multivariate Analysis; Receptors, Estrogen; Receptors, Progesterone; Regression Analysis; Rural Population; Urban Population; Vitamin B 12; Vitamin B 6 | 2011 |
Folate, vitamin B(6) , vitamin B(12) , methionine and alcohol intake in relation to ovarian cancer risk.
Topics: Adult; Alcohol Drinking; Case-Control Studies; Female; Folic Acid; Humans; Methionine; Ovarian Neoplasms; Risk Factors; Vitamin B 12; Vitamin B 6 | 2012 |
Reductive elimination pathway for homocysteine to methionine conversion in cobalamin-dependent methionine synthase.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Homocysteine; Methionine; Models, Molecular; Oxidation-Reduction; Quantum Theory; Vitamin B 12 | 2012 |
Metabolic adaptation of Ralstonia solanacearum during plant infection: a methionine biosynthesis case study.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacterial Proteins; Gene Expression Regulation, Bacterial; Genes, Bacterial; Homocysteine; Methionine; Methyltransferases; Plant Cells; Plant Diseases; Ralstonia solanacearum; Trans-Activators; Vitamin B 12 | 2012 |
Maternal intake of methyl-donor nutrients and child cognition at 3 years of age.
Topics: Adult; Betaine; Child Development; Child, Preschool; Choline; Cognition; Cohort Studies; Diet; DNA Methylation; Female; Folic Acid; Food; Humans; Massachusetts; Maternal Age; Maternal Nutritional Physiological Phenomena; Methionine; Multivariate Analysis; Pregnancy; Pregnancy Trimester, First; Pregnancy Trimester, Second; Prenatal Exposure Delayed Effects; Prospective Studies; Surveys and Questionnaires; Vitamin B 12 | 2012 |
Associations between toenail arsenic concentration and dietary factors in a New Hampshire population.
Topics: Aged; Arsenic; Case-Control Studies; Diet; Dietary Fats; Docosahexaenoic Acids; Drinking Water; Eicosapentaenoic Acid; Environmental Exposure; Female; Fish Oils; Folic Acid; Humans; Male; Methionine; Middle Aged; Nails; New Hampshire; Regression Analysis; Surveys and Questionnaires; Urinary Bladder Neoplasms; Vitamin B 12; Water Wells | 2012 |
A candidate gene study of one-carbon metabolism pathway genes and colorectal cancer risk.
Topics: Aged; Carbon; Case-Control Studies; Colorectal Neoplasms; Diet; Female; Folic Acid; Gene Frequency; Genetic Association Studies; Genetic Predisposition to Disease; Genotype; Humans; Male; Methionine; Mutagenesis, Insertional; Nucleotides; One-Carbon Group Transferases; Polymerase Chain Reaction; Polymorphism, Single Nucleotide; Transcobalamins; Vitamin B 12 | 2013 |
Multiple B-vitamin depletion in large areas of the coastal ocean.
Topics: Biotin; California; Carbon; Chromatography, Liquid; Ecosystem; Food; Marine Biology; Methionine; Oceanography; Oceans and Seas; Phytoplankton; Riboflavin; Salinity; Seawater; Tandem Mass Spectrometry; Thiamine; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2012 |
Gene-diet-interactions in folate-mediated one-carbon metabolism modify colon cancer risk.
Topics: Adult; Aged; Case-Control Studies; Colonic Neoplasms; Diet; DNA (Cytosine-5-)-Methyltransferase 1; DNA (Cytosine-5-)-Methyltransferases; Female; Folic Acid; Gene Frequency; Genetic Predisposition to Disease; Genotype; Glycine Hydroxymethyltransferase; Humans; Male; Methionine; Methylenetetrahydrofolate Dehydrogenase (NADP); Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Minor Histocompatibility Antigens; Polymorphism, Genetic; Riboflavin; Risk Factors; Vitamin B 12; Vitamin B 6 | 2013 |
Whole body methionine kinetics, transmethylation, transulfuration and remethylation during pregnancy.
Topics: Adult; Anthropometry; Carbon Isotopes; Cohort Studies; Dietary Proteins; Feeding Behavior; Female; Humans; India; Methionine; Methylation; Pregnancy; Pregnancy Trimester, First; Pregnancy Trimester, Third; Vitamin B 12; Vitamin B 12 Deficiency; Young Adult | 2014 |
Induction of hyperhomocysteinemia models vascular dementia by induction of cerebral microhemorrhages and neuroinflammation.
Topics: Animals; Brain; Cerebral Hemorrhage; Dementia, Vascular; Diet; Disease Models, Animal; Folic Acid; Humans; Hyperhomocysteinemia; Inflammation; Interleukin-1beta; Interleukin-6; Matrix Metalloproteinase 2; Matrix Metalloproteinase 9; Memory Disorders; Methionine; Mice; Mice, Inbred C57BL; Vitamin B 12; Vitamin B 6 | 2013 |
[Association of serum homocysteine and methionine levels with cognition and functioning in bipolar disorder].
Topics: Bipolar Disorder; Case-Control Studies; Cognition; Folic Acid; Homocysteine; Humans; Methionine; Psychiatric Status Rating Scales; Severity of Illness Index; Vitamin B 12 | 2013 |
One-carbon metabolism factors and leukocyte telomere length.
Topics: Aged; Biomarkers; Carbon; Choline; Cross-Sectional Studies; Diet; DNA; DNA Methylation; Ethanol; Folic Acid; Genotype; Humans; Leukocytes; Metabolic Networks and Pathways; Methionine; Middle Aged; Multivariate Analysis; Nutritional Status; Polymorphism, Single Nucleotide; Surveys and Questionnaires; Telomere; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2013 |
Chlamydomonas reinhardtii thermal tolerance enhancement mediated by a mutualistic interaction with vitamin B12-producing bacteria.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacteria; Bacterial Physiological Phenomena; Chlamydomonas reinhardtii; Gene Expression Regulation, Plant; Methionine; Sinorhizobium meliloti; Stress, Physiological; Symbiosis; Temperature; Vitamin B 12; Vitamin B Complex | 2013 |
Diet influences expression of autoimmune-associated genes and disease severity by epigenetic mechanisms in a transgenic mouse model of lupus.
Topics: Animals; Antibodies, Antinuclear; Betaine; CD40 Ligand; Choline; Coenzymes; Diet; Disease Models, Animal; DNA (Cytosine-5-)-Methyltransferase 1; DNA (Cytosine-5-)-Methyltransferases; DNA Methylation; Epigenesis, Genetic; Folic Acid; Gene Silencing; Genetic Predisposition to Disease; Lupus Erythematosus, Systemic; Methionine; Mice; Mice, Inbred C57BL; Mice, Transgenic; Micronutrients; Riboflavin; Vitamin B 12; Vitamin B 6; Zinc | 2013 |
DNA methylation potential: dietary intake and blood concentrations of one-carbon metabolites and cofactors in rural African women.
Topics: Adolescent; Adult; Betaine; Biomarkers; Choline; Cysteine; Diet; Diet Records; Dietary Carbohydrates; Dietary Fats; Dietary Proteins; DNA Methylation; Feeding Behavior; Female; Folic Acid; Gambia; Homocysteine; Humans; Linear Models; Methionine; Middle Aged; Nutrition Assessment; Prospective Studies; Riboflavin; Rural Population; S-Adenosylhomocysteine; S-Adenosylmethionine; Sarcosine; Vitamin B 12; Vitamin B 6; Young Adult | 2013 |
Early biochemical and hematological response to intramuscular cyanocobalamin therapy in vitamin B(12)-deficient patients.
Topics: Aged; Chromatography, High Pressure Liquid; Cysteine; Erythrocyte Indices; Female; Folic Acid; Homocysteine; Humans; Injections, Intramuscular; Male; Methionine; Methylmalonic Acid; Middle Aged; Statistics, Nonparametric; Vitamin B 12; Vitamin B 12 Deficiency | 2013 |
Dietary intake of B vitamins and methionine and colorectal cancer risk.
Topics: Adult; Aged; Aged, 80 and over; Colorectal Neoplasms; Confidence Intervals; Diet; Female; Folic Acid; Follow-Up Studies; Humans; Male; Methionine; Middle Aged; Proportional Hazards Models; Prospective Studies; Risk Factors; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2013 |
Influences of maternal B₁₂ and methionine intake during gestation and lactation on testicular development of offspring in rats.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Animals, Newborn; Diet; Dietary Supplements; Female; Lactation; Male; Maternal Nutritional Physiological Phenomena; Methionine; Nutritional Status; Pregnancy; Prenatal Exposure Delayed Effects; Prenatal Nutritional Physiological Phenomena; Rats; Rats, Wistar; Spermatogenesis; Testicular Diseases; Testis; Vitamin B 12; Vitamin B 12 Deficiency; Vitamin B Complex | 2013 |
Vitamin B12 and methionine deficiencies induce genome damage measured using the cytokinesis-block micronucleus cytome assay in human B lymphoblastoid cell lines.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cell Line; Cytokinesis; DNA Damage; DNA Methylation; DNA Replication; Genome, Human; Genomic Instability; Humans; Methionine; Micronucleus Tests; Vitamin B 12; Vitamin B 12 Deficiency | 2013 |
Blood and milk oxidative status after administration of different antioxidants during early postpartum in dairy cows.
Topics: alpha-Tocopherol; Animals; Antioxidants; beta Carotene; Carnitine; Cattle; Female; Lipid Peroxides; Methionine; Milk; Oxidative Stress; Postpartum Period; Reactive Oxygen Species; Vitamin A; Vitamin B 12; Vitamin E | 2013 |
Associations of dietary folate, Vitamins B6 and B12 and methionine intake with risk of breast cancer among African American and European American women.
Topics: Adolescent; Adult; Black or African American; Breast Neoplasms; Case-Control Studies; Diet; Female; Folic Acid; Follow-Up Studies; Genetic Predisposition to Disease; Humans; Methionine; Middle Aged; Neoplasm Staging; Premenopause; Prognosis; Receptors, Estrogen; Receptors, Progesterone; Risk Factors; Vitamin B 12; Vitamin B 6; Vitamins; White People; Young Adult | 2014 |
Low plasma vitamin B-12 is associated with a lower pregnancy-associated rise in plasma free choline in Canadian pregnant women and lower postnatal growth rates in their male infants.
Topics: Adult; Betaine; British Columbia; Child Development; Choline; Dietary Supplements; Female; Folic Acid; Humans; Infant; Male; Methionine; Middle Aged; Pregnancy; Prospective Studies; Sarcosine; Vitamin B 12; Vitamin B 12 Deficiency; Young Adult | 2013 |
Effects of methyl donor diets on incisional pain in mice.
Topics: Animals; Choline; Dietary Supplements; Female; Folic Acid; Hindlimb; Hyperalgesia; Male; Methionine; Mice; Mice, Inbred C57BL; Pain; Vitamin B 12; Weaning | 2013 |
Pubertal supplementation of lipotropes in female rats reduces mammary cancer risk by suppressing histone deacetylase 1.
Topics: Animals; Breast Neoplasms; Choline; Dietary Supplements; DNA (Cytosine-5-)-Methyltransferase 1; DNA (Cytosine-5-)-Methyltransferases; Down-Regulation; Female; Folic Acid; Histone Deacetylase 1; Methionine; Methylnitrosourea; Micronutrients; Rats; Rats, Sprague-Dawley; Reverse Transcriptase Polymerase Chain Reaction; Risk Factors; Vitamin B 12 | 2014 |
Intakes of folate, methionine, vitamin B6, and vitamin B12 with risk of esophageal and gastric cancer in a large cohort study.
Topics: Carcinoma, Squamous Cell; Cohort Studies; Diet; Esophageal Neoplasms; Female; Folic Acid; Humans; Male; Methionine; Middle Aged; Risk; Stomach Neoplasms; United States; Vitamin B 12; Vitamin B 6 | 2014 |
Interspecies systems biology uncovers metabolites affecting C. elegans gene expression and life history traits.
Topics: Animals; Betaproteobacteria; Caenorhabditis elegans; Diet; Escherichia coli; Gene Expression Regulation; Metabolic Networks and Pathways; Methionine; Molecular Sequence Data; Propionates; S-Adenosylmethionine; Transcriptome; Vitamin B 12 | 2014 |
Maternal methyl-enriched diet in rat reduced the audiogenic seizure proneness in progeny.
Topics: Animals; Animals, Newborn; Betaine; Choline; Diet; Epilepsy, Reflex; Female; Folic Acid; Male; Maternal Welfare; Methionine; Methylation; Pregnancy; Rats; Rats, Wistar; Vitamin B 12 | 2014 |
Alcohol, one-carbon nutrient intake, and risk of colorectal cancer according to tumor methylation level of IGF2 differentially methylated region.
Topics: Adult; Aged; Alcohol Drinking; Colorectal Neoplasms; DNA Methylation; Energy Intake; Epigenesis, Genetic; Ethanol; Female; Folic Acid; Follow-Up Studies; Humans; Incidence; Insulin-Like Growth Factor II; Male; Methionine; Middle Aged; Proportional Hazards Models; Prospective Studies; Risk Factors; Vitamin B 12; Vitamin B 6 | 2014 |
Interactive performances of betaine on the metabolic processes of Pseudomonas denitrificans.
Topics: Aminolevulinic Acid; Betaine; Fermentation; Glutamic Acid; Glycine; Metabolomics; Methionine; Pseudomonas; Vitamin B 12 | 2015 |
Heterozygous carriers of classical homocystinuria tend to have higher fasting serum homocysteine concentrations than non-carriers in the presence of folate deficiency.
Topics: Aged; Cardiovascular Diseases; Case-Control Studies; Cystathionine beta-Synthase; Dietary Supplements; Fasting; Female; Folic Acid; Folic Acid Deficiency; Genotyping Techniques; Heterozygote; Homocysteine; Homocystinuria; Humans; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Prevalence; Risk Factors; Taiwan; Vitamin B 12 | 2015 |
Clinical pattern, mutations and in vitro residual activity in 33 patients with severe 5, 10 methylenetetrahydrofolate reductase (MTHFR) deficiency.
Topics: Ataxia; Betaine; Child; Female; Folic Acid; Genetic Association Studies; Homocystinuria; Humans; Intellectual Disability; Male; Methionine; Methylenetetrahydrofolate Reductase (NADPH2); Muscle Spasticity; Mutation; Phenotype; Psychotic Disorders; Retrospective Studies; Spinal Cord Diseases; Vitamin B 12 | 2016 |
A Protein Extract from Chicken Reduces Plasma Homocysteine in Rats.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Betaine; Betaine-Homocysteine S-Methyltransferase; Caseins; Chickens; Choline; Cystathionine gamma-Lyase; Cysteine; Dietary Proteins; Folic Acid; Glycine; Homocysteine; Liver; Male; Meat; Methionine; Rats; Rats, Wistar; Riboflavin; RNA, Messenger; Sarcosine; Serine; Vitamin B 12; Vitamin B 6 | 2015 |
Methylating micronutrient supplementation during pregnancy influences foetal hepatic gene expression and IGF signalling and increases foetal weight.
Topics: Animal Feed; Animal Nutritional Physiological Phenomena; Animals; Choline; Diet; Dietary Supplements; Female; Fetal Development; Fetal Weight; Fetus; Folic Acid; Gene Expression; Insulin-Like Growth Factor Binding Proteins; Insulin-Like Growth Factor II; Liver; Maternal Nutritional Physiological Phenomena; Methionine; Micronutrients; Muscle, Skeletal; Pregnancy; Signal Transduction; Swine; Vitamin B 12; Vitamin B 6 | 2016 |
Accurate measurement of the essential micronutrients methionine, homocysteine, vitamins B6, B12, B9 and their metabolites in plasma, brain and maternal milk of mice using LC/MS ion trap analysis.
Topics: Animals; Brain Chemistry; Chromatography, High Pressure Liquid; Female; Folic Acid; Homocysteine; Male; Mass Spectrometry; Methionine; Mice; Mice, Inbred C57BL; Micronutrients; Milk; Vitamin B 12; Vitamin B 6 | 2015 |
Dietary Intakes of Folic Acid and Methionine in Early Childhood Are Associated with Body Composition at School Age.
Topics: Absorptiometry, Photon; Adiposity; Body Composition; Body Mass Index; Body Weight; Child; Child Nutritional Physiological Phenomena; Child, Preschool; Female; Folic Acid; Humans; Infant; Male; Methionine; Netherlands; Nutrition Assessment; Prospective Studies; Reproducibility of Results; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6; White People | 2015 |
Effect of multi-nutrient insufficiency on markers of one carbon metabolism in young women: response to a methionine load.
Topics: Adult; Amino Acids; Biomarkers; Body Height; Carbon; Female; Folic Acid; Food; Glutathione; Homocysteine; Humans; India; Malnutrition; Methionine; Ohio; Vitamin B 12; Vitamin B Complex | 2016 |
Suppression of Mammary Carcinogenesis Through Early Exposure to Dietary Lipotropes Occurs Primarily In Utero.
Topics: Animals; Animals, Newborn; Choline; Chromatin Assembly and Disassembly; Diet; Female; Folic Acid; Histone Deacetylases; Lactation; Mammary Neoplasms, Animal; Maternal-Fetal Exchange; Methionine; Methylnitrosourea; Pregnancy; Rats; Rats, Sprague-Dawley; Vitamin B 12 | 2015 |
Folate, vitamin B6, vitamin B12 and methionine intakes and risk for nasopharyngeal carcinoma in Chinese adults: a matched case-control study.
Topics: Adult; Carcinoma; Case-Control Studies; China; Diet; Female; Folic Acid; Humans; Male; Methionine; Middle Aged; Nasopharyngeal Carcinoma; Nasopharyngeal Neoplasms; Nasopharynx; Odds Ratio; Risk Factors; Vitamin B 12; Vitamin B 6; Vitamin B Complex; Vitamin B Deficiency | 2016 |
Maternal prenatal intake of one-carbon metabolism nutrients and risk of childhood leukemia.
Topics: Adolescent; Adult; California; Carbon; Case-Control Studies; Child; Child, Preschool; Dietary Supplements; Energy Intake; Female; Folic Acid; Hispanic or Latino; Humans; Infant; Infant, Newborn; Logistic Models; Male; Maternal Health; Methionine; Odds Ratio; Precursor Cell Lymphoblastic Leukemia-Lymphoma; Pregnancy; Prenatal Care; Riboflavin; Risk Factors; Vitamin B 12; Vitamin B 6 | 2016 |
Dietary Methyl Donor Depletion Suppresses Intestinal Adenoma Development.
Topics: Adenoma; Animals; Choline; Diet; Folic Acid; Intestinal Neoplasms; Methionine; Mice; Mice, Inbred C57BL; Mice, Transgenic; Random Allocation; Vitamin B 12 | 2016 |
Lipid profile status and other related factors in patients with Hyperphenylalaninaemia.
Topics: Apolipoproteins A; Apolipoproteins B; Blood Pressure; C-Reactive Protein; Cholesterol; Cholesterol, HDL; Cholesterol, LDL; Coronary Disease; Cross-Sectional Studies; Female; Homocysteine; Humans; Lipids; Male; Methionine; Phenylketonurias; Risk Factors; Triglycerides; Vitamin B 12 | 2016 |
Prospective associations of maternal betaine status with offspring weight and body composition at birth: the Growing Up in Singapore Towards healthy Outcomes (GUSTO) cohort study.
Topics: Adipose Tissue; Adolescent; Adult; Betaine; Birth Weight; Body Composition; Body Mass Index; Choline; Dietary Supplements; Female; Folic Acid; Follow-Up Studies; Homocysteine; Humans; Infant; Linear Models; Male; Methionine; Middle Aged; Nutritional Status; Prospective Studies; Sensitivity and Specificity; Singapore; Vitamin B 12; Young Adult | 2016 |
Methylfolate Trap Promotes Bacterial Thymineless Death by Sulfa Drugs.
Topics: Anti-Bacterial Agents; Bacteria; Drug Resistance, Microbial; Folic Acid; Homocysteine; Methionine; Microbial Sensitivity Tests; Vitamin B 12 | 2016 |
Characteristic peripheral blood smear findings in disorders of cobalamin metabolism.
Topics: Erythrocytes, Abnormal; Ferredoxin-NADP Reductase; Homocysteine; Humans; Infant; Male; Methionine; Mutation; Neutrophils; Vitamin B 12; Vitamin B 12 Deficiency | 2016 |
Elucidation of roles for vitamin B
Topics: Amino Acid Sequence; Bacterial Proteins; Base Sequence; Biochemical Phenomena; Folic Acid; Gammaproteobacteria; Halomonas; Methionine; Protein Binding; Sequence Homology, Amino Acid; Sequence Homology, Nucleic Acid; Ubiquinone; Ultraviolet Rays; Vitamin B 12 | 2017 |
Maternal Exposure to Nitrogen Dioxide, Intake of Methyl Nutrients, and Congenital Heart Defects in Offspring.
Topics: Adult; Air Pollutants; Air Pollution; Case-Control Studies; Choline; Diet Records; Eating; Female; Folic Acid; Food Analysis; Heart Defects, Congenital; Humans; Infant, Newborn; Maternal Exposure; Methionine; Nitrogen Dioxide; Odds Ratio; Pregnancy; Prenatal Nutritional Physiological Phenomena; Risk Factors; United States; Vitamin B 12; Vitamin B 6 | 2017 |
Relevance of plasma levels of free homocysteine and methionine as risk predictors for ischemic stroke in the young.
Topics: Adolescent; Adult; Cross-Sectional Studies; Female; Folic Acid; Homocysteine; Humans; Male; Methionine; Odds Ratio; Risk Factors; Stroke; Vitamin B 12; Vitamin B 6; Young Adult | 2018 |
The folate-binding module of Thermus thermophilus cobalamin-dependent methionine synthase displays a distinct variation of the classical TIM barrel: a TIM barrel with a `twist'.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Amino Acid Sequence; Binding Sites; Crystallography, X-Ray; Folic Acid; Methionine; Models, Molecular; Protein Conformation; Sequence Homology; Thermus thermophilus; Vitamin B 12 | 2018 |
Parental micronutrient deficiency distorts liver DNA methylation and expression of lipid genes associated with a fatty-liver-like phenotype in offspring.
Topics: Animals; Animals, Newborn; Diet; Dietary Supplements; DNA Methylation; Epigenesis, Genetic; Fatty Liver; Female; Folic Acid; Gene Expression; Lipid Metabolism; Liver; Male; Methionine; Micronutrients; Pregnancy; Prenatal Exposure Delayed Effects; Vitamin B 12; Vitamin B 6; Zebrafish; Zebrafish Proteins | 2018 |
Methyl-Donor and Cofactor Nutrient Intakes in the First 2-3 Years and Global DNA Methylation at Age 4: A Prospective Cohort Study.
Topics: Child, Preschool; Choline; Diet; Diet Records; Dietary Supplements; DNA Methylation; Female; Folic Acid; Humans; Linear Models; Longitudinal Studies; Male; Mental Recall; Methionine; Mouth Mucosa; Nutrition Assessment; Prospective Studies; Riboflavin; Socioeconomic Factors; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2018 |
Stereochemical Course of Methyl Transfer by Cobalamin-Dependent Radical SAM Methyltransferase in Fosfomycin Biosynthesis.
Topics: Bacterial Proteins; Fosfomycin; Methionine; Methyltransferases; Streptomyces; Vitamin B 12 | 2018 |
Oxidative stress and dietary micronutrient deficiencies contribute to overexpression of epigenetically regulated genes by lupus T cells.
Topics: Adult; Aged; Case-Control Studies; CD4-Positive T-Lymphocytes; Choline; Diet; DNA Methylation; DNA Modification Methylases; Epigenesis, Genetic; Female; Flow Cytometry; Folic Acid; Gene Expression Regulation; Homocysteine; Humans; Lupus Erythematosus, Systemic; Male; Methionine; Micronutrients; Middle Aged; Oxidative Stress; Peroxynitrous Acid; Riboflavin; T-Lymphocytes; Vitamin B 12; Vitamin B 6; Young Adult; Zinc | 2018 |
Evaluation of tracer labelled methionine load test in vitamin B-12 deficient adolescent women.
Topics: Administration, Oral; Adolescent; Body Mass Index; Carbon Dioxide; Carbon Isotopes; Dietary Supplements; Fasting; Female; Folic Acid; Homocysteine; Humans; Iron; Methionine; Serologic Tests; Vitamin B 12; Vitamin B 12 Deficiency | 2018 |
Intake of methyl-related nutrients and risk of pancreatic cancer in a population-based case-control study in Minnesota.
Topics: Adult; Aged; Case-Control Studies; Diet; Dietary Supplements; DNA Methylation; Female; Folic Acid; Humans; Male; Methionine; Middle Aged; Minnesota; Odds Ratio; Pancreatic Neoplasms; Risk Factors; Vitamin B 12; Vitamin B 6 | 2018 |
High methionine, low folate and low vitamin B6/B12 (HM-LF-LV) diet causes neurodegeneration and subsequent short-term memory loss.
Topics: Animals; Dose-Response Relationship, Drug; Folic Acid; Male; Memory Disorders; Memory, Short-Term; Methionine; Mice; Mice, Inbred C57BL; Neurodegenerative Diseases; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2018 |
Dietary intake of one-carbon metabolism nutrients and DNA methylation in peripheral blood.
Topics: Adult; Aged; Aged, 80 and over; Australia; Betaine; Carbon; Choline; Cross-Sectional Studies; Diet; Diet Records; DNA Methylation; Epigenesis, Genetic; Female; Genome-Wide Association Study; Humans; Male; Methionine; Middle Aged; Nutrients; Riboflavin; Surveys and Questionnaires; Vitamin B 12; Vitamin B 6 | 2018 |
Dietary intake and food sources of one-carbon metabolism nutrients in preschool aged children.
Topics: Australia; Child Nutritional Physiological Phenomena; Child, Preschool; Choline; Diet; Female; Folic Acid; Humans; Male; Methionine; Nutrients; Riboflavin; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2019 |
One-Carbon Cofactor Intake and Risk of Neural Tube Defects Among Women Who Meet Folic Acid Recommendations: A Multicenter Case-Control Study.
Topics: Adult; Betaine; Carbon; Case-Control Studies; Choline; Dietary Supplements; Dose-Response Relationship, Drug; Female; Folic Acid; Humans; Methionine; Neural Tube Defects; Odds Ratio; Pregnancy; Risk Factors; Socioeconomic Factors; United States; Vitamin B 12; Vitamin B 6 | 2019 |
The concomitant lower concentrations of vitamins B6, B9 and B12 may cause methylation deficiency in autistic children.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Autism Spectrum Disorder; Child; Child, Preschool; Chromatography, High Pressure Liquid; Cystathionine; Female; Folic Acid; Glutathione; Homocysteine; Humans; Male; Mass Spectrometry; Methionine; Methylation; Mutation; Oxidation-Reduction; Phenotype; Vitamin B 12; Vitamin B 6 | 2019 |
A novel approach in the management of hyperhomocysteinemia.
Topics: Alcohol Oxidoreductases; Animals; Choline; Cytidine Diphosphate Choline; Dietary Supplements; Endothelial Cells; Folic Acid; Homocysteine; Humans; Hydrolysis; Hyperhomocysteinemia; Kidney; Life Style; Liver; Methionine; Models, Theoretical; Vitamin B 12; Vitamin B 6 | 2019 |
Nitrous Oxide Toxicity: Case Files of the Carolinas Medical Center Medical Toxicology Fellowship.
Topics: Academic Medical Centers; Aerosols; Humans; Male; Methionine; Middle Aged; Neurotoxicity Syndromes; Nitrous Oxide; Toxicology; Treatment Outcome; United States; Vitamin B 12; Vitamin B Complex | 2019 |
Identification and characterization of a bacterial core methionine synthase.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacterial Proteins; Chloroflexi; Dehalococcoides; Escherichia coli; Genome, Bacterial; Homocysteine; Methionine; Methylation; Phylogeny; Vitamin B 12 | 2020 |
Low protein diet and methyl-donor supplements modify testicular physiology in mice.
Topics: Animals; Betaine; Choline; Diet, Protein-Restricted; Dietary Supplements; Fatty Acids; Folic Acid; Male; Methionine; Mice; Testis; Vitamin B 12 | 2020 |
One-carbon metabolism-related micronutrients intake and risk for hepatocellular carcinoma: A prospective cohort study.
Topics: Carbon; Carcinoma, Hepatocellular; Diet; Dietary Supplements; Eating; Female; Folic Acid; Humans; Liver Neoplasms; Male; Methionine; Micronutrients; Middle Aged; Nutritional Status; Prospective Studies; Riboflavin; Vitamin B 12; Vitamin B 6; Vitamin B Complex | 2020 |
[Remethylation disorders: about two cases].
Topics: Alcoholism; Amino Acid Metabolism, Inborn Errors; Diagnosis, Differential; Female; Folic Acid; Folic Acid Deficiency; Homocysteine; Homocystinuria; Humans; Infant, Newborn; Metabolic Networks and Pathways; Methionine; Methylation; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Muscle Spasticity; Psychotic Disorders; Vitamin B 12 | 2020 |
Vitamin B
Topics: Ammonia; Methionine; Nitrification; Nitrobacter; Oxygen; Pentacyclic Triterpenes; Plankton; Seawater; Vitamin B 12 | 2020 |
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacterial Proteins; Biological Transport; Gene Expression Regulation, Bacterial; Methionine; Methyltransferases; Mycobacterium smegmatis; Riboswitch; Vitamin B 12 | 2021 |
Four families of folate-independent methionine synthases.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Archaeal Proteins; Bacterial Proteins; Biosynthetic Pathways; Folic Acid; Homocysteine; Iron-Sulfur Proteins; Methionine; Models, Chemical; Molecular Structure; Multigene Family; Oxygen; Tetrahydrofolates; Vitamin B 12 | 2021 |
Methyl-Donors Can Induce Apoptosis and Attenuate Both the Akt and the Erk1/2 Mediated Proliferation Pathways in Breast and Lung Cancer Cell Lines.
Topics: Apoptosis; Breast; Breast Neoplasms; Cell Line, Tumor; Cell Proliferation; Cell Survival; Choline; Folic Acid; Humans; Lung; Lung Neoplasms; MAP Kinase Signaling System; Methionine; Methylation; Proto-Oncogene Proteins c-akt; Signal Transduction; Vitamin B 12 | 2021 |
Subcutaneous vitamin B12 administration using a portable infusion pump in cobalamin-related remethylation disorders: a gentle and easy to use alternative to intramuscular injections.
Topics: Child; Disease Progression; Humans; Infusion Pumps; Injections, Intramuscular; Methionine; Vitamin B 12 | 2021 |
Association of dietary intakes of vitamin B12, vitamin B6, folate, and methionine with the risk of esophageal cancer: the Japan Public Health Center-based (JPHC) prospective study.
Topics: Aged; Alcohol Drinking; Eating; Esophageal Neoplasms; Female; Folic Acid; Follow-Up Studies; Humans; Japan; Male; Methionine; Middle Aged; Prognosis; Prospective Studies; Public Health; Risk Factors; Vitamin B 12; Vitamin B 6; Vitamins | 2021 |
Methionine synthase deficiency: Variable clinical presentation and benefit of early diagnosis and treatment.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Adult; Amino Acid Metabolism, Inborn Errors; Early Diagnosis; Homocysteine; Humans; Metabolism, Inborn Errors; Methionine; Vitamin B 12 | 2022 |
The Atypical Cobalamin-Dependent
Topics: Methionine; Methylation; Methyltransferases; S-Adenosylmethionine; Vitamin B 12 | 2022 |
Vitamin B
Topics: Animals; Fatty Acids; Fibrosis; Folic Acid; Homocysteine; Humans; Hyperhomocysteinemia; Inflammation; Methionine; Mice; Non-alcoholic Fatty Liver Disease; Qa-SNARE Proteins; Vitamin B 12; Vitamins | 2022 |
Early-life vitamin B12 orchestrates lipid peroxidation to ensure reproductive success via SBP-1/SREBP1 in Caenorhabditis elegans.
Topics: Animals; Caenorhabditis elegans; Caenorhabditis elegans Proteins; Lipid Peroxidation; Lipogenesis; Methionine; Transcription Factors; Vitamin B 12 | 2022 |
Dietary-derived vitamin B12 protects Caenorhabditis elegans from thiol-reducing agents.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Animals; Caenorhabditis elegans; Carbon; Dithiothreitol; Folic Acid; Homocysteine; Hydrogen Sulfide; Ligases; Lipids; Mercaptoethanol; Methionine; Methyltransferases; Nucleic Acids; Oxygen; Reducing Agents; S-Adenosylmethionine; Sulfhydryl Compounds; Vitamin B 12; Vitamins | 2022 |
Characterization of Choline Nutriture among Adults and Children with Phenylketonuria.
Topics: Adult; Child; Choline; Female; Folic Acid; Humans; Methionine; Nutrition Surveys; Phenylalanine; Phenylketonurias; Pregnancy; Vitamin B 12; Vitamins | 2022 |
One-carbon metabolism-related nutrients intake is associated with lower risk of preeclampsia in pregnant women: a matched case-control study.
Topics: Case-Control Studies; Choline; Eating; Female; Folic Acid; Humans; Methionine; Nutrients; Pre-Eclampsia; Pregnancy; Pregnant Women; Pyridoxine; Racemethionine; Vitamin B 12; Vitamin B 6; Vitamins | 2022 |
Changes in Dietary Intake of Methionine, Folate/Folic Acid and Vitamin B12 and Survival in Postmenopausal Women with Breast Cancer: A Prospective Cohort Study.
Topics: Animals; Eating; Female; Folic Acid; Methionine; Neoplasms; Postmenopause; Prospective Studies; Racemethionine; Risk Factors; Vitamin B 12 | 2022 |
Mechanism of
Topics: Methionine; Methylation; Methyltransferases; Racemethionine; S-Adenosylmethionine; Vitamin B 12 | 2022 |
Development of vitamin B12 dependency in Saccharomyces cerevisiae.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Bacteria; Methionine; Saccharomyces cerevisiae; Vitamin B 12 | 2023 |
Physiological and genomic analyses of cobalamin (vitamin B
Topics: Bacterial Typing Techniques; Base Composition; Chitin; DNA, Bacterial; Fatty Acids; Genomics; Lysobacter; Methionine; Phospholipids; Phylogeny; Racemethionine; RNA, Ribosomal, 16S; Sequence Analysis, DNA; Soil Microbiology; Vitamin B 12; Vitamins | 2023 |
Conformational switching and flexibility in cobalamin-dependent methionine synthase studied by small-angle X-ray scattering and cryoelectron microscopy.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Cryoelectron Microscopy; Escherichia coli; Folic Acid; Methionine; Scattering, Small Angle; Vitamin B 12; X-Ray Diffraction; X-Rays | 2023 |
Structure of full-length cobalamin-dependent methionine synthase and cofactor loading captured in crystallo.
Topics: 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; Folic Acid; Methionine; S-Adenosylmethionine; Vitamin B 12 | 2023 |