theophylline has been researched along with cellulose in 162 studies
| Timeframe | Studies, this research(%) | All Research% |
|---|---|---|
| pre-1990 | 9 (5.56) | 18.7374 |
| 1990's | 18 (11.11) | 18.2507 |
| 2000's | 82 (50.62) | 29.6817 |
| 2010's | 50 (30.86) | 24.3611 |
| 2020's | 3 (1.85) | 2.80 |
| Authors | Studies |
|---|---|
| Goto, S; Uchida, T; Yasutake, T | 1 |
| Nada, M; Nakagami, H | 1 |
| Price, JC; Shukla, AJ | 2 |
| Hsu, CH; Patel, SR; Vanholder, R; Young, EW | 1 |
| Moldenhauer, MG; Nairn, JG | 1 |
| Benita, S; Dor, P; Levesque, G | 1 |
| Lin, SY; Yang, JC | 1 |
| el-Darawy, ZI; Mobarak, ZM | 1 |
| Chodkowska-Granicka, B; Pawlak, E; Surowiecki, J | 1 |
| Benita, S; Donbrow, M | 3 |
| Iwaoku, R; Juni, K; Nakano, M; Ogata, A; Ohmori, N; Sugimoto, K; Tobino, Y | 1 |
| Goto, S; Kim, NS; Kitagawa, K; Lee, CK; Uchida, T | 1 |
| Lee, PI; Xu, X | 1 |
| O'Connor, RE; Schwartz, JB | 1 |
| Kawai, A; Takada, K; Yasui, H; Yoshikawa, H; Yoshikawa, Y | 1 |
| Chulia, D; Vachon, MG | 1 |
| Brossard, C; Montoussé, C; Pruvost, M; Rodriguez, F | 1 |
| Claudius, JS; Howard, DR; Howard, MA; Neau, SH | 1 |
| Alvarez-Lorenzo, C; Concheiro, A; Gómez-Amoza, JL; Martínez-Pacheco, R; Souto, C | 3 |
| Alvarez-Lorenzo, C; Concheiro, A; Duro, R; Gómez-Amoza, JL; Martínez-Pacheco, R; Souto, C | 1 |
| Frohoff-Hülsmann, MA; Lippold, BC; Schmitz, A | 1 |
| Gunder, W; Lippold, BC; Lippold, BH | 1 |
| Bodmeier, R; Lecomte, F; Siepmann, J | 1 |
| Picker, KM | 2 |
| Amighi, K; Devleeschouwer, MJ; Moës, AJ; Semdé, R | 1 |
| Liu, J; Williams, RO | 2 |
| Kumpugdee, M; Lawanprasert, P; Sarisuta, N | 1 |
| Deák, D; Erós, I; Kása, P; Muskó, Z; Pintye-Hódi, K; Szabó-Révész, P | 1 |
| Ferrero, C; Jiménez-Castellanos, MR; Muñoz-Ruiz, A | 1 |
| Khoh, KH; Lim, CP; Peh, KK; Quek, SS | 1 |
| Chen, Y; Ebube, NK; Forbess, RA; Kemper, MS; Reier, GE; Rubinovitz, RL; Shukla, AJ; Thosar, SS; Wheatley, TA | 1 |
| Alvarez-Lorenzo, C; Concheiro, A; Gómez-Amoza, JL; Gómez-Carracedo, A; Martínez-Pacheco, R; Souto, C | 1 |
| Bodmeier, R; Wesseling, M | 1 |
| Bikane, F; Picker, KM | 1 |
| Chulia, D; N'Dri-Stempfer, B; Vachon, MG; Viana, M | 1 |
| Roshdy, MN; Schnaare, RL; Schwartz, JB; Sugita, ET | 1 |
| Kulvanich, P; Leesawat, P; Patomchaiviwat, V | 1 |
| Kojima, M; Nakagami, H | 2 |
| Pérez, J; Rabisková, M | 1 |
| Li, MJ; Lin, KH; Lin, SY | 1 |
| Ferrero, MC; Goñi, I; Gurruchaga, M; Jiménez-Castellanos, RM | 1 |
| Miyazaki, Y; Nagai, T; Ogihara, K; Takayama, K; Yakou, S | 2 |
| Ikegami, K; Kobayashi, M; Osawa, T; Tagawa, K | 1 |
| Picker, KM; Schmidt, AG; Wartewig, S | 1 |
| Miyazaki, Y; Nagai, T; Takayama, K; Yakou, S | 1 |
| Donoso, M; Ghaly, ES; Kildsig, DO | 1 |
| Obeidat, WM; Price, JC | 1 |
| Chambin, O; Champion, D; Debray, C; Le Meste, M; Pourcelot, Y; Rochat-Gonthier, MH | 1 |
| Kondo, S; Kosaki, M; Kuzuya, M; Sasai, Y | 1 |
| Debnath, S; Suryanarayanan, R | 1 |
| Chitropas, P; Mitrevej, A; Sinchaipanid, N | 1 |
| Altinkurt, T; Uner, M | 1 |
| Chaumeil, JC; Douki, W; Noureddine, N; Sfar, S | 1 |
| Airaksinen, S; Jørgensen, AC; Karjalainen, M; Luukkonen, P; Rantanen, J; Yliruusi, J | 1 |
| McGinity, JW; Sauer, D; Zheng, W | 1 |
| Donoso, M; Ghaly, ES | 1 |
| Bodmeier, R; MacRae, RJ; Siepmann, F; Siepmann, J; Walther, M | 1 |
| Chikazawa, M; Fuji, M; Ohta, KM; Takei, T | 1 |
| Chambin, O; Pourcelot, Y; Rochat-Gonthier, MH; Rota, A | 1 |
| Zheng, L; Zhu, Y | 1 |
| Kleinebudde, P; Thommes, M | 1 |
| Chanda, E; Datta, BK; Haider, SS; Quadir, MA; Reza, MD | 1 |
| Hauschild, K; Picker-Freyer, KM | 1 |
| Krejcová, K; Polásek, E; Prokopová, A; Rabisková, M; Tomásek, V; Vetchý, D | 1 |
| Dashevsky, A; Mohamad, A | 1 |
| Miyazaki, Y; Takayama, K; Tanaka, Y; Yakou, S | 1 |
| Burton, MA; Kennedy, RA; Sriamornsak, P | 1 |
| Abdollahi, H; Bozchalooi, IS; Dadgar, A; Ghaffari, A; Khoshayand, MR; Rafiee-Tehrani, M | 1 |
| Alvarez-Lorenzo, C; Concheiro, A; Lacík, I; Martinez-Pacheco, R; Mayo-Pedrosa, M | 1 |
| Adriaensens, P; Dukić, A; Foreman, P; Gelan, J; Mens, R; Remon, JP; Vervaet, C | 1 |
| Concheiro, A; Gómez-Amoza, JL; Gómez-Carracedo, A; Martínez-Pacheco, R; Souto, C | 1 |
| Häring, A; Rabisková, M; Weingartová, D | 1 |
| Blaschek, W; Kleinebudde, P; Thommes, M | 1 |
| Obaidat, IM; Obeidat, WM | 1 |
| Ghimire, M; McInnes, FJ; Mullen, AB; Stevens, HN; Watson, DG | 1 |
| Heilweil, EJ; Hussain, AS; Khan, MA; Wu, H | 1 |
| Carlin, B; Leclercq, B; Siepmann, F; Siepmann, J; Wahle, C | 1 |
| Luangtana-anan, M; Nunthanid, J; Puttipipatkhachorn, S; Sriamornsak, P; Weerapol, Y | 1 |
| Bi, Y; Cheng, Q; Gan, L; Hou, S; Li, Y; Mao, S; Wang, C; Xu, N; Zheng, Y | 1 |
| Sun, CC | 1 |
| Carlin, B; Leclercq, B; Muschert, S; Siepmann, F; Siepmann, J | 3 |
| Anderson, CA; Cogdill, RP; Short, SM | 1 |
| Concheiro, A; Gómez-Amoza, JL; Gómez-Carracedo, A; Marti Nez-Pacheco, R; Souto, C | 1 |
| Cogdill, RP; Hair, CR; Moore, MD; Short, SM; Wildfong, PL | 1 |
| Häring, A; Janovská, L; Krejcová, K; Rabisková, M; Vetchý, D | 1 |
| Avadi, MR; Bayati, K; Ghaffari, A; Moghimi, HR; Oskoui, M; Rafiee-Tehrani, M | 1 |
| He, HB; Huang, HF; Lu, Y; Tang, X | 1 |
| Anderson, CA; Cogdill, RP; Drennen, JK; Short, SM; Wildfong, PL | 1 |
| Basit, AW; McConnell, EL; Short, MD | 2 |
| Badillo, N; Ghaly, ES | 1 |
| Augsburger, LL; Cantor, SL; Hoag, SW | 2 |
| Band, JP; Florence, AJ; Hodges, LA; Humphrey, MJ; Jones, T; Lindsay, B; McConville, JT; O'Mahony, B; Ross, AC; Stanley, AJ; Stevens, HN; Wilson, CG | 1 |
| Jürgens, K; Kranz, H; Pinier, M; Siepmann, J | 1 |
| Atapour, F; Jelvehgari, M; Nokhodchi, A | 1 |
| Buckner, IS; Moore, MD; Steinbach, AM; Wildfong, PL | 1 |
| Bayati, K; Ghaffari, A; Helali, K; Oskoui, M; Rafiee-Tehrani, M | 1 |
| Emeje, MO; Kunle, OO; Ofoefule, SI | 1 |
| Antal, I; Ashour, KO; Fenyvesi, Z; Klebovich, I; Marton, S; Müller, U; Zelkó, R | 1 |
| Concheiro, A; Gomez-Amoza, JL; Gomez-Carracedo, A; Martinez-Pacheco, R | 1 |
| Ahmed, AR; Bodmeier, RA; Dashevsky, A; Irfan, M; Kolter, K; Mota, J | 1 |
| Betz, G; El-Arini, SK; Hadzidedić, S; Hadzović, E; Leuenberger, H | 2 |
| Efentakis, M; Iliopoyloy, A; Siamidi, A | 1 |
| Barba, AA; d'Amore, M; Dalmoro, A; Lamberti, G; Titomanlio, G | 1 |
| Amin, AF; Patel, MM | 1 |
| Cantor, SL; Ellison, CD; Hoag, SW; Khan, MA; Lyon, RC | 1 |
| Ghanam, D; Kleinebudde, P | 1 |
| Leclercq, B; Muschert, S; Siepmann, F; Siepmann, J | 1 |
| Hisazumi, J; Nakagami, H; Suzuki, T; Terada, K | 1 |
| Antikainen, O; Heinämäki, J; Siiriä, SM; Yliruusi, J | 1 |
| Burggraeve, A; De Beer, T; Heinämäki, J; Räikkönen, H; Remon, JP; Sandler, N; Vervaet, C; Yliruusi, J | 1 |
| Emeje, M; Isimi, Y; John-Africa, L; Kunle, O; Ofoefule, S | 1 |
| Casas, M; Escudero, JJ; Ferrero, C; Jiménez-Castellanos, MR | 1 |
| Abe, H; Otsuka, M; Otsuka, Y; Yamamoto, M | 1 |
| Obata, Y; Onuki, Y; Takayama, K; Yamamoto, R; Yasuda, A | 1 |
| Chokshi, R; Leclercq, B; Muschert, S; Rosiaux, Y; Siepmann, F; Siepmann, J | 1 |
| Li, L; Mao, S; Ni, R; Shao, Y; Wang, L; Zhang, T | 1 |
| Kleinebudde, P; Krueger, C; Thommes, M | 2 |
| Chokshi, R; Leclercq, B; Muschert, S; Rosiaux, Y; Siepmann, F; Siepmann, J; Velghe, C | 2 |
| Del Curto, MD; Gazzaniga, A; Loreti, G; Maroni, A; Melocchi, A; Zema, L | 1 |
| Afrasiabi Garekani, H; Sadeghi, F; Sedighi, S | 1 |
| Anderson, CA; Drennen, JK; Igne, B; Shi, Z | 1 |
| Agarwal, K; Hicks, I; Kane, A; Kathiria, L; Kushner, J; Langdon, BA; Li, F; Ranade, G; Song, D | 1 |
| Ford, JL; Levina, M; Mohamed, FA; Rajabi-Siahboomi, AR; Roberts, M; Seton, L | 1 |
| Abrami, M; Ahmad, I; Farra, R; Fiorentino, S; Grassi, G; Grassi, M; Halib, N; Lapasin, R; Mohd Amin, MC; Musiani, F | 1 |
| Al-Khattawi, A; Alyami, H; Ma, X; Mohammed, AR; Townsend, B | 1 |
| Afrasiabi Garekani, H; Faghihnia Torshizi, M; Sadeghi, F | 1 |
| Alhnan, MA; Czarnocka, JK | 1 |
| Chang, SY; Gong, X; Osei-Yeboah, F; Paul, S; Perumalla, SR; Shi, L; Sun, CC; Sun, WJ; Zhou, Q | 1 |
| Alhnan, MA; Isreb, A; Pietrzak, K | 1 |
| Antunes, F; Asaro, F; Farra, R; Golob, S; Grassi, G; Grassi, M; Milcovich, G; Voinovich, D | 1 |
| Ee Li, C; Sheshala, R; Srikanth Meka, V | 1 |
| Ahmadi, B; Garekani, HA; Sadeghi, F | 1 |
| Ahmed, H; Capomacchia, A; Elder, D; Garner, S; Israel, B; Thakare, M | 1 |
| Ahmed, W; Alhnan, MA; Arafat, B; Isreb, A; Kelarakis, A; Sadia, M; Sośnicka, A | 1 |
| Beyssac, E; Garrait, G; Hoffart, V; Hsein, H; Tamani, F | 1 |
| Alakurtti, S; Aruväli, J; Heinämäki, J; Hulkko, J; Kanerva, H; Kogermann, K; Paaver, U; Pirttimaa, MM; Pitkänen, HP; Yliruusi, J | 1 |
| Barba, AA; Caccavo, D; Cafaro, MM; Kazlauske, J; Lamberti, G; Larsson, A; Marucci, M | 1 |
| Ahmed, W; Alhnan, MA; Arafat, B; Arafat, T; Forbes, RT; Isreb, A; Isreb, M; Wojsz, M | 1 |
| Czyzewska, U; Mazurek-Wadołkowska, E; Miltyk, W; Winnicka, K | 1 |
| Akhgari, A; Bavarsad, N; Kalantari, F; Moghaddam, PT; Nejati, L; Saremnejad, F | 1 |
| Ando, C; Kondo, K; Niwa, T | 1 |
| Carnahan, SL; Hirsh, DA; Hung, I; Lubach, JW; Nagapudi, K; Rossini, AJ; Wijesekara, AV | 1 |
| Antikainen, O; Ehlers, H; Juppo, A; Pollet, A; Räikkönen, H; Tanner, T; Yliruusi, J | 1 |
| Hattori, Y; Otsuka, M; Saito, S; Sakamoto, T | 1 |
| Al-Sharabi, M; Bawuah, P; Gane, P; Karttunen, AP; Ketolainen, J; Markl, D; Mudley, T; Peiponen, KE; Rades, T; Ridgway, C; Zeitler, JA | 1 |
| Budtova, T; Buwalda, S; Groult, S | 1 |
2 trial(s) available for theophylline and cellulose
| Article | Year |
|---|---|
In vivo drug release from hydrophilic dextran tablets capable of forming polyion complex.
Topics: Administration, Oral; Biological Availability; Cellulose; Cross-Over Studies; DEAE-Dextran; Delayed-Action Preparations; Dextrans; Drug Delivery Systems; Female; Humans; Male; Polymethacrylic Acids; Saliva; Tablets, Enteric-Coated; Theophylline; Water | 2006 |
Microbiota-triggered colonic delivery: robustness of the polysaccharide approach in the fed state in man.
Topics: Administration, Oral; Adult; Amylose; Biological Availability; Capsules; Cecum; Cellulose; Colon; Cross-Over Studies; Drug Delivery Systems; Fasting; Feces; Gastrointestinal Transit; Gelatin; Humans; Male; Plasma; Polysaccharides; Theophylline; Time Factors | 2009 |
160 other study(ies) available for theophylline and cellulose
| Article | Year |
|---|---|
Utility of mixture of commercially available polymers as constituents of sustained-release microcapsules containing cefadroxil or theophylline.
Topics: Administration, Oral; Animals; Cefadroxil; Cellulose; Delayed-Action Preparations; Dogs; Drug Compounding; Intestinal Absorption; Male; Methylcellulose; Theophylline | 1992 |
In vitro evaluation of micronized low-substituted hydroxypropylcellulose as an insoluble swellable matrix for sustained-release tablets.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Evaluation Studies as Topic; Indomethacin; Particle Size; Powders; Procainamide; Theophylline; X-Ray Diffraction | 1991 |
Effect of drug loading and molecular weight of cellulose acetate propionate on the release characteristics of theophylline microspheres.
Topics: Capsules; Cellulose; Microscopy, Electron, Scanning; Microspheres; Molecular Weight; Particle Size; Theophylline; Viscosity | 1991 |
Effects of purine derivatives on calcitriol metabolism in rats.
Topics: Animals; Calcitriol; Cellulose; Cholestanetriol 26-Monooxygenase; DNA; Kidney; Kinetics; Male; Metabolic Clearance Rate; Purines; Rats; Rats, Inbred Strains; Receptors, Calcitriol; Receptors, Steroid; Steroid Hydroxylases; Theophylline; Uric Acid | 1991 |
Formulation parameters affecting the preparation and properties of microencapsulated ion-exchange resins containing theophylline.
Topics: Capsules; Cellulose; Delayed-Action Preparations; Diffusion; Drug Compounding; Ion Exchange Resins; Microscopy, Electron, Scanning; Particle Size; Theophylline | 1990 |
Effect of drug (core) particle size on the dissolution of theophylline from microspheres made from low molecular weight cellulose acetate propionate.
Topics: Cellulose; Chemistry, Pharmaceutical; Excipients; Microspheres; Molecular Weight; Particle Size; Solubility; Theophylline | 1989 |
Cellulose hydrogen phthalate. A coating polymer in controlled release dosage forms.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Excipients; Theophylline | 1987 |
Bioavailability studies of theophylline ethylcellulose microcapsules prepared by using ethylene-vinyl acetate copolymer as a coacervation-inducing agent.
Topics: Animals; Biological Availability; Capsules; Cellulose; Delayed-Action Preparations; Intestinal Absorption; Kinetics; Male; Polyvinyls; Rats; Rats, Inbred Strains; Solubility; Theophylline | 1987 |
The use of modified cellulose papers in routine toxicological analysis. 3. Xanthine CNS stimulants and antipyretics.
Topics: Analgesics; Caffeine; Cellulose; Central Nervous System; Chromatography, Paper; Paper; Theobromine; Theophylline; Xanthines | 1974 |
[Tablets of 7-(3'-(methylhydroxyethylamino)-2'-hydroxypropyl)-theophylline nicotinate with delayed action. I. Moderation of the release of the active substance by some additives].
Topics: Cellulose; Delayed-Action Preparations; Dextrans; Drug Stability; Nicotinic Acids; Palmitic Acids; Pharmaceutic Aids; Povidone; Stearic Acids; Tablets; Technology, Pharmaceutical; Theophylline | 1971 |
Release kinetics of sparingly soluble drugs from ethyl cellulose-walled microcapsules: theophylline microcapsules.
Topics: Capsules; Cellulose; Delayed-Action Preparations; Diffusion; Kinetics; Particle Size; Permeability; Solubility; Theophylline | 1982 |
Release kinetics of sparingly soluble drugs from ethyl cellulose-walled microcapsules: salicylamide microcapsules.
Topics: Capsules; Cellulose; Hydrogen-Ion Concentration; Kinetics; Particle Size; Permeability; Salicylamides; Solubility; Theophylline; Time Factors | 1982 |
Sustained release of theophylline from hydroxypropylcellulose tablets.
Topics: Administration, Oral; Adult; Cellulose; Delayed-Action Preparations; Female; Humans; Male; Saliva; Tablets; Technology, Pharmaceutical; Theophylline; Viscosity | 1983 |
Effect of polyisobutylene on ethyl cellulose-walled microcapsules: wall structure and thickness of salicylamide and theophylline microcapsules.
Topics: Capsules; Cellulose; Chemistry, Pharmaceutical; Microscopy, Electron, Scanning; Particle Size; Polyenes; Polymers; Salicylamides; Theophylline | 1982 |
Transdermal delivery of theophylline using an ethanol/panasate 800-ethylcellulose gel preparation.
Topics: Administration, Cutaneous; Animals; Biological Availability; Caprylates; Cellulose; Chromatography, High Pressure Liquid; Delayed-Action Preparations; Diffusion; Ethanol; Excipients; Gels; In Vitro Techniques; Lauric Acids; Mice; Mice, Nude; Rats; Rats, Wistar; Skin Absorption; Theophylline; Triglycerides | 1995 |
Programmable drug delivery from an erodible association polymer system.
Topics: Biocompatible Materials; Calorimetry, Differential Scanning; Cellulose; Diffusion; Drug Delivery Systems; Hydrogen Bonding; Hydrogen-Ion Concentration; Poloxalene; Polyethylene Glycols; Polymers; Propylene Glycols; Spectrophotometry, Infrared; Spectrophotometry, Ultraviolet; Theophylline | 1993 |
Drug release mechanism from a microcrystalline cellulose pellet system.
Topics: Cellulose; Chemical Phenomena; Chemistry, Physical; Drug Compounding; Excipients; Particle Size; Porosity; Solubility; Theophylline | 1993 |
Preparation and evaluation of micro-porous ethylcellulose capsule as oral sustained-release preparation of theophylline.
Topics: Administration, Oral; Animals; Capsules; Cellulose; Delayed-Action Preparations; Dogs; Food; Male; Solubility; Theophylline | 1998 |
The use of particle characteristics to elucidate mix homogeneity in binary powder blends.
Topics: Cellulose; Lactose; Particle Size; Powders; Surface Properties; Theophylline | 1998 |
Extrusion-spheronization manufacture of Gelucire matrix beads.
Topics: Castor Oil; Cellulose; Crystallization; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Ethanol; Fats; Kinetics; Oils; Polyethylene Glycols; Theophylline | 1999 |
The effect of the aqueous solubility of xanthine derivatives on the release mechanism from ethylcellulose matrix tablets.
Topics: Algorithms; Caffeine; Cellulose; Dyphylline; Kinetics; Solubility; Spectrophotometry, Ultraviolet; Tablets; Theophylline; Xanthines | 1999 |
Microviscosity of hydroxypropylcellulose gels as a basis for prediction of drug diffusion rates.
Topics: Cellulose; Diffusion; Gels; Theophylline; Viscosity | 1999 |
Degradation of hydroxypropylcellulose by Rhizomucor: effects on release from theophylline-hydroxypropylcellulose tablets.
Topics: Cellulose; Drug Stability; Drug Storage; Hydrogen-Ion Concentration; Rhizomucor; Tablets; Theophylline | 1999 |
Aqueous ethyl cellulose dispersions containing plasticizers of different water solubility and hydroxypropyl methylcellulose as coating material for diffusion pellets. I. Drug release rates from coated pellets.
Topics: Cellulose; Drug Implants; Lactose; Methylcellulose; Osmolar Concentration; Oxazines; Plasticizers; Solubility; Tablets, Enteric-Coated; Temperature; Theophylline; Water | 1999 |
Drug release from diffusion pellets coated with the aqueous ethyl cellulose dispersion Aquacoat ECD-30 and 20% dibutyl sebacate as plasticizer: partition mechanism and pore diffusion.
Topics: Cellulose; Dicarboxylic Acids; Diffusion; Drug Implants; Guaifenesin; Hydrogen-Ion Concentration; Osmotic Pressure; Plasticizers; Porosity; Sucrose; Suspensions; Theophylline | 1999 |
Diffusion-controlled drug delivery systems: calculation of the required composition to achieve desired release profiles.
Topics: Cellulose; Diffusion; Diltiazem; Drug Delivery Systems; In Vitro Techniques; Models, Biological; Plasticizers; Polymers; Theophylline; Time Factors; Vasodilator Agents | 1999 |
The use of carrageenan in mixture with microcrystalline cellulose and its functionality for making tablets.
Topics: Algorithms; Carrageenan; Cellulose; Drug Compounding; Elasticity; Excipients; Hardness; Kinetics; Microscopy, Electron, Scanning; Particle Size; Powders; Solubility; Tablets; Theophylline; Water | 1999 |
The stability of theophylline tablets with a hydroxypropylcellulose matrix.
Topics: Cellulose; Drug Stability; Drug Storage; Excipients; Humidity; Particle Size; Spectrophotometry, Infrared; Tablets; Theophylline; Thermodynamics; Viscosity; Water; X-Ray Diffraction | 2000 |
Evaluation of low-substituted hydroxypropylcelluloses (L-HPCs) as filler-binders for direct compression.
Topics: Cellulose; Drug Compounding; Excipients; Hot Temperature; Humidity; Microscopy, Electron, Scanning; Particle Size; Porosity; Powders; Solutions; Spectrophotometry, Infrared; Spectrum Analysis, Raman; Surface Properties; Tablets; Tensile Strength; Theophylline | 2000 |
Effect of pectinolytic enzymes on the theophylline release from pellets coated with water insoluble polymers containing pectin HM or calcium pectinate.
Topics: Absorption; Acrylic Resins; Cellulose; Particle Size; Pectins; Polygalacturonase; Polymers; Polymethacrylic Acids; Solubility; Theophylline; Water | 2000 |
Influence of processing and curing conditions on beads coated with an aqueous dispersion of cellulose acetate phthalate.
Topics: Bronchodilator Agents; Cellulose; Drug Compounding; Excipients; Humidity; Microscopy, Electron, Scanning; Microspheres; Particle Size; Phthalic Acids; Plasticizers; Solubility; Temperature; Theophylline | 2000 |
A new theoretical model to characterize the densification behavior of tableting materials.
Topics: Algorithms; Calcium Phosphates; Cellulose; Drug Compounding; Excipients; Hypromellose Derivatives; Methylcellulose; Models, Theoretical; Pressure; Tablets; Theophylline; Time Factors | 2000 |
Physical structure characterization of theophylline in some acidic film-forming polymers.
Topics: Cellulose; Chromatography, Thin Layer; Crystallization; Magnetic Resonance Spectroscopy; Polyvinyls; Solvents; Theophylline; Vasodilator Agents | 2000 |
Measurement of film thickness on the surface of coated pellets and its influence on drug dissolution rate.
Topics: Cellulose; Dosage Forms; Excipients; Image Processing, Computer-Assisted; Kinetics; Polymethacrylic Acids; Powders; Solubility; Surface Properties; Theophylline | 2000 |
Fronts movement as a useful tool for hydrophilic matrix release mechanism elucidation.
Topics: Antimutagenic Agents; Bronchodilator Agents; Carboxymethylcellulose Sodium; Cellulose; Methylmethacrylate; Polymers; Tablets; Theophylline; Wetting Agents | 2000 |
Use of artificial neural networks to predict drug dissolution profiles and evaluation of network performance using similarity factor.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Excipients; Glycerides; Kinetics; Models, Chemical; Neural Networks, Computer; Solubility; Theophylline | 2000 |
A comparison of reflectance and transmittance near-infrared spectroscopic techniques in determining drug content in intact tablets.
Topics: Bronchodilator Agents; Calibration; Cellulose; Spectroscopy, Near-Infrared; Stearic Acids; Tablets; Technology, Pharmaceutical; Theophylline | 2001 |
Extrusion-Spheronization of blends of carbopol 934 and microcrystalline cellulose.
Topics: Acrylates; Algorithms; Cellulose; Delayed-Action Preparations; Drug Design; Particle Size; Structure-Activity Relationship; Tablets; Theophylline | 2001 |
Influence of plasticization time, curing conditions, storage time, and core properties on the drug release from Aquacoat-coated pellets.
Topics: Cellulose; Chlorpheniramine; Citrates; Colloids; Delayed-Action Preparations; Drug Implants; Drug Storage; Excipients; Histamine H1 Antagonists; Phosphodiesterase Inhibitors; Plasticizers; Theophylline | 2001 |
An evaluation of three-dimensional modeling of compaction cycles by analyzing the densification behavior of binary and ternary mixtures.
Topics: Biocompatible Materials; Calcium Phosphates; Cellulose; Drug Compounding; Models, Chemical; Tablets; Theophylline | 2001 |
The influence of plasticizer on heat-humidity curing of cellulose acetate phthalate coated beads.
Topics: Cellulose; Chromatography, High Pressure Liquid; Citrates; Delayed-Action Preparations; Hot Temperature; Humidity; Microspheres; Phthalic Acids; Plasticizers; Solubility; Tablets, Enteric-Coated; Theophylline | 2001 |
Influence of manufacturing process on tabletting ability of powder: comparison between blending, grinding, and spray drying of two formulations made of theophylline and lactose/cellulose or Cellactose.
Topics: Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Lactose; Powders; Tablets; Theophylline | 2002 |
The effect of controlled release tablet performance and hydrogel strength on in vitro/in vivo correlation.
Topics: Acrylic Resins; Animals; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Dogs; Hydrogel, Polyethylene Glycol Dimethacrylate; Lactose; Male; Methylcellulose; Oxazines; Polyvinyls; Solubility; Tablets; Theophylline | 2002 |
Release characteristics of the matrices prepared from co-spray-dried powders of theophylline and ethylcellulose.
Topics: Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Compressive Strength; Diffusion; Hydrogen-Ion Concentration; Porosity; Powders; Sclerosing Solutions; Theophylline | 2002 |
Development of controlled release matrix pellets by annealing with micronized water-insoluble or enteric polymers.
Topics: Cellulose; Drug Compounding; Drug Implants; Drug Stability; Excipients; Hardness; Methylcellulose; Microscopy, Electron, Scanning; Particle Size; Polymers; Solubility; Temperature; Theophylline; Water; X-Ray Diffraction | 2002 |
Influence of the drying technique on theophylline pellets prepared by extrusion-spheronization.
Topics: Bronchodilator Agents; Cellulose; Desiccation; Drug Compounding; Excipients; Hardness; Particle Size; Theophylline | 2002 |
Influence of excipients, drugs, and osmotic agent in the inner core on the time-controlled disintegration of compression-coated ethylcellulose tablets.
Topics: Albuterol; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diclofenac; Drug Compounding; Excipients; Hardness; Kinetics; Osmosis; Particle Size; Pharmaceutical Preparations; Powders; Pressure; Sodium Chloride; Solubility; Tablets; Theophylline; Time Factors | 2002 |
Synthesis of hydroxypropyl methacrylate/polysaccharide graft copolymers as matrices for controlled release tablets.
Topics: Cellulose; Chemistry, Pharmaceutical; Compressive Strength; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Excipients; Hydrogels; Methacrylates; Particle Size; Polymers; Polysaccharides; Powders; Rheology; Solubility; Starch; Tablets; Theophylline; Water | 2002 |
Investigation of water mobility and diffusivity in hydrating micronized low-substituted hydroxypropyl cellulose, hydroxypropylmethyl cellulose, and hydroxypropyl cellulose matrix tablets by magnetic resonance imaging (MRI).
Topics: Cellulose; Chemical Phenomena; Chemistry, Physical; Drug Carriers; Drug Compounding; Gels; Hypromellose Derivatives; Kinetics; Magnetic Resonance Spectroscopy; Methylcellulose; Procainamide; Tablets; Theophylline; Water | 2002 |
In vitro and in vivo evaluation of mucoadhesive microspheres consisting of dextran derivatives and cellulose acetate butyrate.
Topics: Adhesiveness; Administration, Oral; Animals; Cellulose; DEAE-Dextran; Dextran Sulfate; Dextrans; Drug Carriers; Drug Compounding; Gastric Emptying; Gastrointestinal Transit; In Vitro Techniques; Jejunum; Male; Microspheres; Models, Biological; Particle Size; Rats; Rats, Sprague-Dawley; Theophylline | 2003 |
Prediction of in vivo drug release behavior of controlled-release multiple-unit dosage forms in dogs using a flow-through type dissolution test method.
Topics: Acetaminophen; Administration, Oral; Animals; Biological Availability; Cellulose; Chromatography, High Pressure Liquid; Delayed-Action Preparations; Dogs; Drug Carriers; Forecasting; Intestinal Absorption; Male; Models, Biological; Phenylpropanolamine; Solubility; Theophylline | 2003 |
Potential of carrageenans to protect drugs from polymorphic transformation.
Topics: Carrageenan; Cellulose; Chemistry, Pharmaceutical; Crystallization; Excipients; Hypromellose Derivatives; Indomethacin; Methylcellulose; Models, Chemical; Powders; Spectrum Analysis, Raman; Tablets; Theophylline | 2003 |
Release profiles of theophylline from microspheres consisting of dextran derivatives and cellulose acetate butyrate: effect of polyion complex formation.
Topics: Cellulose; Delayed-Action Preparations; Dextrans; Dosage Forms; Drug Delivery Systems; Microspheres; Particle Size; Theophylline | 2003 |
Prediction of tablet hardness and porosity using near-infrared diffuse reflectance spectroscopy as a nondestructive method.
Topics: Cellulose; Chemistry, Pharmaceutical; Hardness Tests; Porosity; Spectroscopy, Fourier Transform Infrared; Stearic Acids; Tablets; Theophylline | 2003 |
Bioavailability of theophylline and thiamine disulfide incorporated into mucoadhesive microspheres consisting of dextran derivatives and cellulose acetate butyrate.
Topics: Adhesiveness; Administration, Oral; Animals; Area Under Curve; Biological Availability; Cellulose; Dextrans; Digestive System; Dosage Forms; Intestinal Absorption; Microspheres; Rats; Solutions; Suspensions; Theophylline; Thiamine | 2003 |
Evaluation of enteric matrix microspheres prepared by emulsion-solvent evaporation using scanning electron microscopy.
Topics: Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Delivery Systems; Emulsions; Humans; Microscopy, Electron, Scanning; Microspheres; Particle Size; Solvents; Theophylline | 2004 |
Effects of different cellulose derivatives on drug release mechanism studied at a preformulation stage.
Topics: Algorithms; Cellulose; Chemistry, Pharmaceutical; Drug Carriers; Excipients; Hypromellose Derivatives; Magnetic Resonance Spectroscopy; Methylcellulose; Microscopy, Electron, Scanning; Pharmaceutical Preparations; Powders; Solubility; Tablets; Theophylline | 2004 |
Novel and simple preparation method of matrix-type composite particles for controlled drug release by mechanical action.
Topics: Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Drug Compounding; Excipients; Microscopy, Electron, Scanning; Particle Size; Powders; Spectrophotometry, Ultraviolet; Theophylline; Vibration | 2004 |
Influence of processing-induced phase transformations on the dissolution of theophylline tablets.
Topics: Cellulose; Chemistry, Pharmaceutical; Kinetics; Powders; Solubility; Tablets; Theophylline; Water | 2004 |
Influences of layering on theophylline pellet characteristics.
Topics: Cellulose; Drug Compounding; Excipients; Hypromellose Derivatives; Methylcellulose; Particle Size; Powders; Surface Properties; Suspensions; Tablets, Enteric-Coated; Theophylline; Time Factors; X-Ray Diffraction | 2004 |
Evaluation of honey locust (Gleditsia triacanthos Linn.) gum as sustaining material in tablet dosage forms.
Topics: Animals; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Dosage Forms; Evaluation Studies as Topic; Galactans; Gleditsia; Mannans; Plant Gums; Tablets; Theophylline; Vasodilator Agents | 2004 |
[Theophylline release and diffusion from a compressed ethylcellulose matrix through an artificial membrane].
Topics: Algorithms; Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Excipients; Membranes, Artificial; Theophylline | 2004 |
Role of excipients in hydrate formation kinetics of theophylline in wet masses studied by near-infrared spectroscopy.
Topics: Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Excipients; Kinetics; Lactose; Solubility; Spectroscopy, Near-Infrared; Theophylline; X-Ray Diffraction | 2004 |
Influence of hydroxyethylcellulose on the drug release properties of theophylline pellets coated with Eudragit RS 30 D.
Topics: Acrylic Resins; Cellulose; Drug Compounding; Theophylline | 2005 |
Prediction of tablets disintegration times using near-infrared diffuse reflectance spectroscopy as a nondestructive method.
Topics: Algorithms; Calibration; Cellulose; Chemistry, Pharmaceutical; Excipients; Forecasting; Kinetics; Models, Statistical; Solubility; Spectroscopy, Near-Infrared; Stearic Acids; Tablets; Theophylline | 2005 |
Blends of aqueous polymer dispersions used for pellet coating: importance of the particle size.
Topics: Cellulose; Chemical Phenomena; Chemistry, Physical; Chromatography, High Pressure Liquid; Dosage Forms; Drug Carriers; Drug Stability; Emulsions; Hardness Tests; Kinetics; Methylcellulose; Microscopy, Electron, Scanning; Particle Size; Plasticizers; Polymers; Polymethacrylic Acids; Surface Properties; Theophylline | 2005 |
Development of a simple method for the preparation of a silica gel based controlled delivery system with a high drug content.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Dose-Response Relationship, Drug; Drug Carriers; Drug Stability; Gels; Methylcellulose; Polyethylene Glycols; Porosity; Silica Gel; Silicon Dioxide; Solubility; Surface-Active Agents; Theophylline; Time Factors | 2005 |
Performance of multilayered particles: influence of a thin cushioning layer.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Hypromellose Derivatives; Methylcellulose; Solubility; Tablets, Enteric-Coated; Theophylline | 2005 |
Development and mathematical simulation of theophylline pulsatile release tablets.
Topics: Absorption; Algorithms; Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diffusion; Excipients; Hardness; Kinetics; Microscopy, Electron, Scanning; Models, Statistical; Plasticizers; Solubility; Theophylline | 2005 |
Use of kappa-carrageenan as alternative pelletisation aid to microcrystalline cellulose in extrusion/spheronisation. II. Influence of drug and filler type.
Topics: Acetaminophen; Carrageenan; Cellulose; Chemistry, Pharmaceutical; Drug Implants; Excipients; Mesalamine; Particle Size; Solubility; Surface Properties; Technology, Pharmaceutical; Tensile Strength; Theophylline; Water | 2006 |
Evaluation of ethylcellulose as matrices for controlled release drug delivery.
Topics: Cellulose; Compressive Strength; Delayed-Action Preparations; Diclofenac; Diltiazem; Drug Carriers; Hydrogen-Ion Concentration; Kinetics; Solubility; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors | 2005 |
Evaluation of tableting and tablet properties of Kollidon SR: the influence of moisture and mixtures with theophylline monohydrate.
Topics: Algorithms; Bronchodilator Agents; Calcium Phosphates; Cellulose; Chemistry, Pharmaceutical; Crystallization; Drug Compounding; Elasticity; Excipients; Hardness; Humidity; Microscopy, Electron, Scanning; Models, Statistical; Particle Size; Porosity; Povidone; Pressure; Tablets; Tensile Strength; Theophylline | 2006 |
The influence of drug solubility and particle size on the pellet formulation in a rotoprocessor.
Topics: Algorithms; Anti-Inflammatory Agents, Non-Steroidal; Bronchodilator Agents; Calcium Channel Blockers; Cellulose; Chemistry, Pharmaceutical; Diclofenac; Diltiazem; Drug Compounding; Excipients; Lactase; Particle Size; Solubility; Theophylline; Water | 2006 |
Development of pulsatile multiparticulate drug delivery system coated with aqueous dispersion Aquacoat ECD.
Topics: Adrenergic beta-Antagonists; Algorithms; Bronchodilator Agents; Cellulose; Drug Delivery Systems; Membranes, Artificial; Permeability; Polymers; Propranolol; Theophylline | 2006 |
Development of polysaccharide gel coated pellets for oral administration 1. Physico-mechanical properties.
Topics: Acetates; Administration, Oral; Alginates; Calcium Compounds; Cellulose; Chemistry, Pharmaceutical; Gels; Glucuronic Acid; Materials Testing; Microscopy, Electron, Scanning; Particle Size; Pectins; Polysaccharides; Tensile Strength; Theophylline | 2006 |
Performance comparison of neural network training algorithms in modeling of bimodal drug delivery.
Topics: Acrylic Resins; Algorithms; Cellulose; Chitosan; Drug Compounding; Drug Delivery Systems; Excipients; Neural Networks, Computer; Pectins; Theophylline | 2006 |
Sustained release pellets based on poly(N-isopropyl acrylamide): matrix and in situ photopolymerization-coated systems.
Topics: Acrylamides; Acrylic Resins; Cellulose; Chemistry, Pharmaceutical; Cross-Linking Reagents; Crystallography, X-Ray; Delayed-Action Preparations; Drug Carriers; Excipients; Microscopy, Electron, Scanning; Photochemistry; Porosity; Povidone; Powders; Rheology; Solubility; Spectroscopy, Fourier Transform Infrared; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors; Torque; Ultraviolet Rays | 2007 |
Development of starch-based pellets via extrusion/spheronisation.
Topics: Algorithms; Amylopectin; Amylose; Cellulose; Chemistry, Pharmaceutical; Crystallization; Drug Carriers; Excipients; Imaging, Three-Dimensional; Magnetic Resonance Spectroscopy; Microscopy, Electron, Scanning; Particle Size; Plasticizers; Povidone; Solubility; Sorbitol; Surface Properties; Technology, Pharmaceutical; Theophylline; Time Factors; X-Ray Diffraction | 2007 |
Microstructural and drug release properties of oven-dried and of slowly or fast frozen freeze-dried MCC-Carbopol pellets.
Topics: Acrylic Resins; Calcium Chloride; Cellulose; Drug Compounding; Excipients; Freeze Drying; Freezing; Hydrogen-Ion Concentration; Ketoprofen; Linear Models; Particle Size; Polyvinyls; Porosity; Rheology; Theophylline; Viscosity; X-Ray Diffraction | 2007 |
The influence of the extrusion die on pellet characteristics.
Topics: Capsules; Cellulose; Excipients; Microspheres; Particle Size; Solubility; Technology, Pharmaceutical; Theophylline | 2007 |
Effect of drying on extruded pellets based on kappa-carrageenan.
Topics: Calcium Phosphates; Carrageenan; Cellulose; Chemistry, Pharmaceutical; Desiccation; Dosage Forms; Drug Compounding; Excipients; Hydrochlorothiazide; Solubility; Technology, Pharmaceutical; Temperature; Tensile Strength; Theophylline; Time Factors; Vacuum; Water | 2007 |
Effect of the dispersion of Eudragit S100 powder on the properties of cellulose acetate butyrate microspheres containing theophylline made by the emulsion-solvent evaporation method.
Topics: Calorimetry, Differential Scanning; Cellulose; Emulsions; Hydrogen-Ion Concentration; Microscopy, Electron, Scanning; Microspheres; Polymethacrylic Acids; Solvents; Theophylline | 2007 |
In-vitro/in-vivo correlation of pulsatile drug release from press-coated tablet formulations: a pharmacoscintigraphic study in the beagle dog.
Topics: Animals; Area Under Curve; Cellulose; Delayed-Action Preparations; Dogs; Drug Delivery Systems; Drug Design; Gastrointestinal Tract; In Vitro Techniques; Pharmaceutical Preparations; Radionuclide Imaging; Solubility; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors | 2007 |
Process analytical technology (PAT): effects of instrumental and compositional variables on terahertz spectral data quality to characterize pharmaceutical materials and tablets.
Topics: Cellulose; Excipients; Lactose; Pharmaceutical Preparations; Spectrum Analysis; Starch; Stearic Acids; Tablets; Technology, Pharmaceutical; Theophylline | 2007 |
pH-sensitive film coatings: towards a better understanding and facilitated optimization.
Topics: Alginates; Cellulose; Delayed-Action Preparations; Diffusion; Drug Carriers; Gastric Juice; Hydrogen-Ion Concentration; Intestinal Secretions; Kinetics; Theophylline; Water | 2008 |
Alginate-based pellets prepared by extrusion/spheronization: effect of the amount and type of sodium alginate and calcium salts.
Topics: Alginates; Calcium; Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Drug Delivery Systems; Drug Implants; Electrons; Glucuronic Acid; Hexuronic Acids; Particle Size; Salts; Solubility; Technology, Pharmaceutical; Theophylline; Time Factors | 2008 |
A controlled porosity osmotic pump system with biphasic release of theophylline.
Topics: Cellulose; Drug Delivery Systems; Hydrogen-Ion Concentration; Infusion Pumps; Osmosis; Osmotic Pressure; Permeability; Phosphates; Phthalic Acids; Polyethylene Glycols; Porosity; Sodium Chloride; Solubility; Tablets, Enteric-Coated; Theophylline; Vasodilator Agents | 2007 |
On the mechanism of reduced tabletability of granules prepared by roller compaction.
Topics: Cellulose; Particle Size; Porosity; Powders; Stearic Acids; Tablets; Technology, Pharmaceutical; Tensile Strength; Theophylline | 2008 |
How to improve the storage stability of aqueous polymeric film coatings.
Topics: Cellulose; Delayed-Action Preparations; Drug Stability; Drug Storage; Excipients; Humidity; Solubility; Temperature; Theophylline | 2008 |
Determination of figures of merit for near-infrared and Raman spectrometry by net analyte signal analysis for a 4-component solid dosage system.
Topics: Calibration; Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Lactose; Least-Squares Analysis; Models, Statistical; Reproducibility of Results; Research Design; Signal Processing, Computer-Assisted; Spectroscopy, Near-Infrared; Spectrum Analysis, Raman; Starch; Tablets; Technology, Pharmaceutical; Theophylline | 2007 |
Incidence of drying on microstructure and drug release profiles from tablets of MCC-lactose-Carbopol and MCC-dicalcium phosphate-Carbopol pellets.
Topics: Acrylic Resins; Anti-Asthmatic Agents; Calcium Phosphates; Cellulose; Chemistry, Pharmaceutical; Desiccation; Excipients; Freeze Drying; Kinetics; Lactose; Particle Size; Polyvinyls; Porosity; Solubility; Tablets; Tensile Strength; Theophylline | 2008 |
The use of net analyte signal orthogonalization in the separation of multi-component diffraction patterns obtained from X-ray powder diffraction of intact compacts.
Topics: Cellulose; Lactose; Powder Diffraction; Powders; Starch; Theophylline | 2008 |
Differences in characteristics of pellets prepared by different pelletization methods.
Topics: Cellulose; Excipients; Hardness; Lactose; Particle Size; Solubility; Technology, Pharmaceutical; Theophylline; Water | 2008 |
Mechanistic analysis of drug release from theophylline pellets coated by films containing pectin, chitosan and Eudragit RS.
Topics: Acrylic Resins; Capsules; Cellulose; Chemistry, Pharmaceutical; Chitosan; Delayed-Action Preparations; Excipients; Kinetics; Models, Biological; Pectins; Technology, Pharmaceutical; Theophylline | 2008 |
Preparation and bioavailability of sustained-release doxofylline pellets in beagle dogs.
Topics: Acrylic Resins; Administration, Oral; Animals; Biological Availability; Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Dogs; Hydrogen-Ion Concentration; Male; Methacrylates; Polymers; Solubility; Theophylline | 2008 |
A near-infrared spectroscopic investigation of relative density and crushing strength in four-component compacts.
Topics: Calibration; Cellulose; Drug Compounding; Hardness Tests; Lactose; Least-Squares Analysis; Spectroscopy, Near-Infrared; Starch; Tablets; Theophylline | 2009 |
An in vivo comparison of intestinal pH and bacteria as physiological trigger mechanisms for colonic targeting in man.
Topics: Adult; Amylose; Cellulose; Colon; Cross-Over Studies; Drug Carriers; Drug Compounding; Gastrointestinal Transit; Humans; Hydrogen-Ion Concentration; Male; Polymethacrylic Acids; Solubility; Technetium; Theophylline | 2008 |
In vitro evaluation of theophylline matrices using xyloglucan.
Topics: Bronchodilator Agents; Buffers; Calcium Phosphates; Cellulose; Delayed-Action Preparations; Excipients; Glucans; Hydrochloric Acid; Lactose; Rotation; Stearic Acids; Theophylline; Water; Xylans | 2008 |
Formulation and characterization of a compacted multiparticulate system for modified release of water-soluble drugs--Part II theophylline and cimetidine.
Topics: Algorithms; Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Cimetidine; Drug Compounding; Excipients; Histamine H2 Antagonists; Humidity; Kinetics; Lipids; Particle Size; Particulate Matter; Polymethacrylic Acids; Solubility; Tablets; Theophylline; Water | 2009 |
Drug release mechanisms from ethylcellulose: PVA-PEG graft copolymer-coated pellets.
Topics: Acetaminophen; Cellulose; Chemistry, Pharmaceutical; Diltiazem; Drug Carriers; Drug Delivery Systems; Metoprolol; Polyethylene Glycols; Polymers; Polyvinyl Alcohol; Tablets, Enteric-Coated; Technology, Pharmaceutical; Temperature; Theophylline | 2009 |
A pharmacoscintigraphic study of three time-delayed capsule formulations in healthy male volunteers.
Topics: Administration, Oral; Adult; Capsules; Cellulose; Chemistry, Pharmaceutical; Cross-Over Studies; Delayed-Action Preparations; Dosage Forms; Drug Administration Schedule; Drug Design; Drug Evaluation; Excipients; Fasting; Gastric Emptying; Gastrointestinal Tract; Humans; Indium Radioisotopes; Intestinal Absorption; Male; Models, Chemical; Pharmaceutic Aids; Pharmaceutical Preparations; Radionuclide Imaging; Riboflavin; Solubility; Tablets; Technetium Tc 99m Pentetate; Technology, Pharmaceutical; Theophylline | 2009 |
Evaluation of the mechanical properties of extrusion-spheronized beads and multiparticulate systems.
Topics: Cellulose; Cimetidine; Excipients; Glycerides; Methacrylates; Polymers; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors | 2009 |
Drug release from MCC- and carrageenan-based pellets: experiment and theory.
Topics: Carboxymethylcellulose Sodium; Carrageenan; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diffusion; Drug Carriers; Drug Compounding; Kinetics; Models, Chemical; Phthalazines; Polyethylene Glycols; Porosity; Pyridines; Solubility; Theophylline | 2009 |
Micromeritics and release behaviours of cellulose acetate butyrate microspheres containing theophylline prepared by emulsion solvent evaporation and emulsion non-solvent addition method.
Topics: Calorimetry, Differential Scanning; Cellulose; Chemistry, Pharmaceutical; Crystallography, X-Ray; Cyclohexanes; Drug Carriers; Drug Compounding; Emulsions; Kinetics; Microscopy, Electron, Scanning; Microspheres; Oils; Particle Size; Solubility; Spectroscopy, Fourier Transform Infrared; Surface Properties; Technology, Pharmaceutical; Theophylline | 2009 |
A structural investigation into the compaction behavior of pharmaceutical composites using powder X-ray diffraction and total scattering analysis.
Topics: Cellulose; Chemistry, Pharmaceutical; Phase Transition; Powders; Principal Component Analysis; Theophylline; X-Ray Diffraction | 2009 |
Simulated food effects on drug release from ethylcellulose: PVA-PEG graft copolymer-coated pellets.
Topics: Cellulose; Chemistry, Pharmaceutical; Diltiazem; Drug Carriers; Food; Polyvinyls; Tablets, Enteric-Coated; Theophylline | 2010 |
Pectin/chitosan/Eudragit RS mixed-film coating for bimodal drug delivery from theophylline pellets: preparation and evaluation.
Topics: Acrylic Resins; Cellulose; Chemistry, Pharmaceutical; Chitosan; Drug Carriers; Drug Delivery Systems; Excipients; Gastrointestinal Tract; Microscopy, Electron, Scanning; Pectins; Solubility; Theophylline | 2006 |
Effect of the molecular size of carboxymethylcellulose and some polymers on the sustained release of theophylline from a hydrophilic matrix.
Topics: Carboxymethylcellulose Sodium; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Carriers; Hardness; Kinetics; Polymers; Polymethacrylic Acids; Solubility; Tablets; Theophylline | 2006 |
Impact of crystalline form changing on behavior of microcapsules prepared from three-component gel system.
Topics: Alginates; Bronchodilator Agents; Capsules; Cellulose; Crystallization; Gels; Glucuronic Acid; Hexuronic Acids; Hypromellose Derivatives; Methylcellulose; Models, Chemical; Polymers; Theophylline; Water | 2010 |
Modelling of porosity and waterfronts in cellulosic pellets for understanding drug release behavior.
Topics: Acrylates; Algorithms; Cellulose; Chemistry, Pharmaceutical; Desiccation; Drug Delivery Systems; Excipients; Freeze Drying; Models, Chemical; Porosity; Theophylline; Water | 2010 |
Effect of water-soluble polymers on the physical stability of aqueous polymeric dispersions and their implications on the drug release from coated pellets.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Implants; Drug Stability; Excipients; Flocculation; Kinetics; Nephelometry and Turbidimetry; Polyvinyls; Propranolol; Solubility; Theophylline | 2010 |
Roller compaction of different pseudopolymorphic forms of theophylline: Effect on compressibility and tablet properties.
Topics: Cellulose; Chemistry, Pharmaceutical; Compressive Strength; Crystallization; Crystallography, X-Ray; Kinetics; Microscopy, Electron, Scanning; Models, Chemical; Particle Size; Porosity; Powders; Pressure; Solubility; Surface Properties; Tablets; Technology, Pharmaceutical; Theophylline; Water | 2010 |
Effect of core size and excipients on the lag time and drug release from a pulsatile drug delivery system.
Topics: Caffeine; Cellulose; Chemistry, Pharmaceutical; Dosage Forms; Drug Carriers; Drug Delivery Systems; Excipients; Hydrophobic and Hydrophilic Interactions; Lactose; Particle Size; Polymers; Solubility; Tablets; Tablets, Enteric-Coated; Theophylline | 2011 |
Enteric micro-particles for targeted oral drug delivery.
Topics: Administration, Oral; Bronchodilator Agents; Capsules; Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Delivery Systems; Emulsions; Excipients; Hydrogen-Ion Concentration; Microspheres; Polymethacrylic Acids; Polyvinyl Alcohol; Solubility; Theophylline | 2010 |
Design and optimization of colon-targeted system of theophylline for chronotherapy of nocturnal asthma.
Topics: Animals; Asthma; Bronchodilator Agents; Cellulose; Chronotherapy; Colon; Delayed-Action Preparations; Drug Stability; Polymethacrylic Acids; Rabbits; Theophylline | 2011 |
NIR spectroscopy applications in the development of a compacted multiparticulate system for modified release.
Topics: Anti-Ulcer Agents; Bronchodilator Agents; Cellulose; Cimetidine; Delayed-Action Preparations; Dosage Forms; Drug Delivery Systems; Excipients; Humans; Lipids; Methacrylates; Models, Statistical; Placebos; Polymers; Spectroscopy, Near-Infrared; Tablets; Theophylline | 2011 |
Suitability of κ-carrageenan pellets for the formulation of multiparticulate tablets with modified release.
Topics: Bisacodyl; Carrageenan; Cellulose; Delayed-Action Preparations; Excipients; Feasibility Studies; Methacrylates; Polymers; Polymethacrylic Acids; Polyvinyls; Pressure; Solubility; Tablets; Theophylline | 2011 |
Dynamic and static curing of ethylcellulose:PVA-PEG graft copolymer film coatings.
Topics: Antihypertensive Agents; Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Drug Delivery Systems; Drug Implants; Drug Stability; Excipients; Metoprolol; Polymers; Polyvinyls; Solubility; Sucrose; Suspensions; Theophylline | 2011 |
Quantification of pharmaceutical polymorphs and prediction of dissolution rate using theophylline tablet by terahertz spectroscopy.
Topics: Cellulose; Humidity; Solubility; Stearic Acids; Tablets; Temperature; Terahertz Spectroscopy; Theophylline; Time Factors | 2011 |
3D simulation of internal tablet strength during tableting.
Topics: Cellulose; Chemistry, Pharmaceutical; Compressive Strength; Computer Simulation; Models, Molecular; Molecular Conformation; Pharmaceutical Preparations; Tablets; Theophylline | 2011 |
Investigation of compressibility and compactibility parameters of roller compacted Theophylline and its binary mixtures.
Topics: Cellulose; Compressive Strength; Drug Compounding; Excipients; Particle Size; Powders; Tablets; Tensile Strength; Theophylline | 2011 |
Real-time image-based investigation of spheronization and drying phenomena using different pellet formulations.
Topics: Cellulose; Chemistry, Pharmaceutical; Desiccation; Particle Size; Spectrum Analysis, Raman; Theophylline; Water | 2011 |
Eudraginated polymer blends: a potential oral controlled drug delivery system for theophylline.
Topics: Acrylates; Administration, Oral; Animals; Area Under Curve; Biological Availability; Carboxymethylcellulose Sodium; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Hydrogen-Ion Concentration; Intestinal Absorption; Male; Polymethacrylic Acids; Rabbits; Solubility; Tablets; Technology, Pharmaceutical; Theophylline | 2012 |
Compaction properties, drug release kinetics and fronts movement studies of matrices combining mixtures of swellable and inert polymers. III: effect of polymer substitution type.
Topics: Cellulose; Chemistry, Pharmaceutical; Diffusion; Drug Carriers; Freeze Drying; Kinetics; Methylmethacrylate; Polymers; Tablets; Theophylline | 2012 |
Effects of polymorphic transformation on pharmaceutical properties of direct compressed tablets containing theophylline anhydrate bulk powder under high humidity.
Topics: Cellulose; Humidity; Stearic Acids; Tablets; Theophylline; Tomography, X-Ray Computed; X-Ray Diffraction | 2013 |
Self-organizing map analysis using multivariate data from theophylline tablets predicted by a thin-plate spline interpolation.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Drug Stability; Models, Statistical; Tablets; Tensile Strength; Theophylline | 2013 |
Ethanol-resistant polymeric film coatings for controlled drug delivery.
Topics: Cellulose; Delayed-Action Preparations; Ethanol; Galactans; Mannans; Plant Gums; Theophylline; Vasodilator Agents | 2013 |
Drug release characteristics from chitosan-alginate matrix tablets based on the theory of self-assembled film.
Topics: Acetaminophen; Alginates; Cellulose; Chitosan; Glucuronic Acid; Hexuronic Acids; Hydrogen-Ion Concentration; Metformin; Osmolar Concentration; Stearic Acids; Tablets; Theophylline; Trimetazidine | 2013 |
Influence of MCC II fraction and storage conditions on pellet properties.
Topics: Cellulose; Chemistry, Pharmaceutical; Chloramphenicol; Drug Delivery Systems; Drug Implants; Drug Stability; Excipients; Humidity; Kinetics; Lactose; Particle Size; Porosity; Solubility; Surface Properties; Technology, Pharmaceutical; Tensile Strength; Theophylline; Water | 2013 |
Ethanol-resistant ethylcellulose/guar gum coatings--importance of formulation parameters.
Topics: Alcohol Drinking; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Stability; Ethanol; Excipients; Galactans; Kinetics; Mannans; Microscopy, Electron, Scanning; Plant Gums; Polymers; Solubility; Solutions; Surface Properties; Theophylline; Viscosity | 2013 |
Mechanisms controlling theophylline release from ethanol-resistant coated pellets.
Topics: Bronchodilator Agents; Cellulose; Computer Simulation; Diffusion; Drug Carriers; Ethanol; Galactans; Mannans; Models, Chemical; Plant Gums; Theophylline | 2014 |
Evaluation of hot-melt extrusion technique in the preparation of HPC matrices for prolonged release.
Topics: Cellulose; Delayed-Action Preparations; Drug Compounding; Hot Temperature; Ketoprofen; Technology, Pharmaceutical; Theophylline | 2014 |
Surelease or organic solution of ethylcellulose in preparation of sustained release theophylline micromatrices or matrices using spray drying technique.
Topics: Calorimetry, Differential Scanning; Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Liberation; Drug Stability; Excipients; Microscopy, Electron, Scanning; Microspheres; Particle Size; Solutions; Spectrophotometry, Infrared; Surface Properties; Tablets; Technology, Pharmaceutical; Theophylline | 2015 |
Effects and detection of raw material variability on the performance of near-infrared calibration models for pharmaceutical products.
Topics: Algorithms; Analysis of Variance; Calibration; Cellulose; Chemistry, Pharmaceutical; Drug Industry; Environment; Excipients; Models, Chemical; Models, Statistical; Particle Size; Pharmaceutical Preparations; Reproducibility of Results; Spectrophotometry, Ultraviolet; Spectroscopy, Near-Infrared; Starch; Theophylline | 2014 |
A quality-by-design study for an immediate-release tablet platform: examining the relative impact of active pharmaceutical ingredient properties, processing methods, and excipient variability on drug product quality attributes.
Topics: Carboxymethylcellulose Sodium; Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Hardness; Ibuprofen; Lactose; Lubricants; Particle Size; Powders; Pressure; Solubility; Stearic Acids; Tablets; Theophylline | 2014 |
Film-coated matrix mini-tablets for the extended release of a water-soluble drug.
Topics: Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Delivery Systems; Drug Liberation; Excipients; Gels; Hypromellose Derivatives; Kinetics; Microscopy, Electron, Scanning; Phosphodiesterase Inhibitors; Polyethylene Glycols; Polyvinyl Alcohol; Polyvinyls; Porosity; Solubility; Surface Properties; Tablets; Theophylline | 2015 |
Topological characterization of a bacterial cellulose-acrylic acid polymeric matrix.
Topics: Acrylates; Cellulose; Drug Liberation; Gluconacetobacter xylinus; Hydrogels; Magnetic Resonance Spectroscopy; Microscopy, Electron, Scanning; Polymers; Porosity; Rheology; Theophylline | 2014 |
Influence of storage condition on properties of MCC II-based pellets with theophylline-monohydrate.
Topics: Cellulose; Crystallization; Kinetics; Solubility; Theophylline | 2014 |
Evidence-based nanoscopic and molecular framework for excipient functionality in compressed orally disintegrating tablets.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Ibuprofen; Mannitol; Tablets; Theophylline | 2014 |
Surelease as granulating liquid in preparation of sustained release matrices of ethylcellulose and theophylline.
Topics: Cellulose; Delayed-Action Preparations; Drug Liberation; Elasticity; Hardness; Particle Size; Solubility; Tablets; Technology, Pharmaceutical; Theophylline | 2015 |
Gastro-resistant characteristics of GRAS-grade enteric coatings for pharmaceutical and nutraceutical products.
Topics: Alginates; Carboxymethylcellulose Sodium; Cellulose; Delayed-Action Preparations; Dietary Supplements; Drug Approval; Gastric Juice; Glucuronic Acid; Hexuronic Acids; Hydrogen-Ion Concentration; Intestinal Secretions; Resins, Plant; Tablets; Theophylline | 2015 |
Dependence of tablet brittleness on tensile strength and porosity.
Topics: Amlodipine; Cellulose; Drugs, Chinese Herbal; Glyburide; Ibuprofen; Porosity; Powders; Salvia miltiorrhiza; Sildenafil Citrate; Silicon Dioxide; Stearic Acids; Tablets; Tensile Strength; Theophylline | 2015 |
A flexible-dose dispenser for immediate and extended release 3D printed tablets.
Topics: Acrylic Resins; Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Liberation; Drug Stability; Excipients; Hot Temperature; Humans; Materials Testing; Models, Chemical; Phosphodiesterase Inhibitors; Precision Medicine; Printing, Three-Dimensional; Quality Control; Tablets; Theophylline; Time Factors | 2015 |
Thermo-responsive hydrogels from cellulose-based polyelectrolytes and catanionic vesicles for biomedical application.
Topics: Anions; Biomedical Technology; Cations; Cellulose; Diffusion; Drug Liberation; Elasticity; Hydrogels; Polyelectrolytes; Proton Magnetic Resonance Spectroscopy; Rheology; Temperature; Theophylline; Viscosity | 2016 |
Design and statistical optimization of an effervescent floating drug delivery system of theophylline using response surface methodology.
Topics: Calorimetry, Differential Scanning; Cellulose; Chemistry, Pharmaceutical; Drug Carriers; Drug Delivery Systems; Drug Liberation; Excipients; Polyethylene Glycols; Polymers; Polymethacrylic Acids; Polysaccharides, Bacterial; Sodium Bicarbonate; Solubility; Spectroscopy, Fourier Transform Infrared; Tablets; Theophylline | 2016 |
Effect of Variation in Viscosity Grade of Ethycellulose on Theophylline Microcapsule Properties Prepared by Emulsion Solvent Evaporation.
Topics: Cellulose; Emulsions; Particle Size; Solvents; Surface Properties; Theophylline; Viscosity; Volatilization | 2017 |
Nonionic surfactant structure on the drug release, formulation and physical properties of ethylcellulose microspheres.
Topics: Cellulose; Cetomacrogol; Drug Carriers; Drug Compounding; Drug Liberation; Microscopy, Electron, Scanning; Microspheres; Particle Size; Polysorbates; Solubility; Surface Properties; Surface-Active Agents; Theophylline | 2017 |
Adaptation of pharmaceutical excipients to FDM 3D printing for the fabrication of patient-tailored immediate release tablets.
Topics: Calcium Phosphates; Captopril; Cellulose; Drug Compounding; Drug Liberation; Excipients; Humans; Lactose; Mesalamine; Polymethacrylic Acids; Prednisolone; Printing, Three-Dimensional; Tablets; Talc; Theophylline | 2016 |
Denatured Whey Protein Powder as a New Matrix Excipient: Design and Evaluation of Mucoadhesive Tablets for Sustained Drug Release Applications.
Topics: Adhesives; Administration, Oral; Animals; Body Fluids; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diffusion; Drug Compounding; Drug Liberation; Excipients; Intestinal Mucosa; Kinetics; Powders; Silicon Dioxide; Solubility; Stearic Acids; Swine; Tablets; Theophylline; Whey Proteins | 2017 |
Suberin Fatty Acids from Outer Birch Bark: Isolation and Physical Material Characterization.
Topics: Betula; Cellulose; Chemistry, Pharmaceutical; Excipients; Fatty Acids; Lipids; Molecular Structure; Plant Bark; Tablets; Theophylline | 2017 |
Determination of the release mechanism of Theophylline from pellets coated with Surelease
Topics: Cellulose; Delayed-Action Preparations; Drug Liberation; Solubility; Theophylline; Water | 2017 |
Tablet fragmentation without a disintegrant: A novel design approach for accelerating disintegration and drug release from 3D printed cellulosic tablets.
Topics: Cellulose; Computer-Aided Design; Drug Design; Drug Liberation; Printing, Three-Dimensional; Tablets; Technology, Pharmaceutical; Theophylline | 2018 |
EFFECT OF SIMULTANEOUSLY SILICIFIED MICROCRYSTALLINE CELLULOSE AND PREGELATINIZED STARCH ON THE THEOPHYLLINE TABLETS STABILITY.
Topics: Cellulose; Drug Stability; Gas Chromatography-Mass Spectrometry; Silicon Dioxide; Starch; Tablets; Theophylline | 2016 |
Investigation of using pectin and chitosan as natural excipients in pellet formulation.
Topics: Cellulose; Chemistry, Pharmaceutical; Chitosan; Dimenhydrinate; Excipients; Humans; Pectins; Polymers; Polysaccharides; Porosity; Theophylline; Thermography | 2018 |
Mechanical particle coating using ethylcellulose nanoparticle agglomerates for preparing controlled release fine particles; effect of coating temperature on coating performance.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Excipients; Freeze Drying; Nanoparticles; Particle Size; Polymers; Porosity; Temperature; Theophylline; Transition Temperature | 2019 |
Rapid Characterization of Formulated Pharmaceuticals Using Fast MAS
Topics: Carbon Isotopes; Carbon-13 Magnetic Resonance Spectroscopy; Cellulose; Drug Compounding; Excipients; Feasibility Studies; Hydrogen; Lactose; Mexiletine; Stearic Acids; Tablets; Theophylline; X-Ray Diffraction | 2019 |
Predicting tablet tensile strength with a model derived from the gravitation-based high-velocity compaction analysis data.
Topics: Calcium Phosphates; Cellulose; Gravitation; Hypromellose Derivatives; Models, Theoretical; Particle Size; Stearic Acids; Tablets; Tensile Strength; Theophylline | 2019 |
Real-time monitoring of pharmaceutical properties of medical tablets during direct tableting process by hybrid tableting process parameter-time profiles.
Topics: Cellulose; Compressive Strength; Computer Systems; Drug Compounding; Hardness; Powders; Pressure; Solubility; Starch; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors; Wettability | 2020 |
Simultaneous investigation of the liquid transport and swelling performance during tablet disintegration.
Topics: Acetaminophen; Calcium Carbonate; Cellulose; Chemistry, Pharmaceutical; Dose-Response Relationship, Drug; Excipients; Humans; Kinetics; Porosity; Tablets; Terahertz Spectroscopy; Theophylline | 2020 |
Tuning bio-aerogel properties for controlling drug delivery. Part 2: Cellulose-pectin composite aerogels.
Topics: Cellulose; Gels; Pectins; Solubility; Theophylline | 2022 |