Page last updated: 2024-12-05

sapropterin

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Description

Sapropterin is a synthetic form of tetrahydrobiopterin (BH4), a naturally occurring cofactor essential for the proper functioning of certain enzymes involved in the production of neurotransmitters such as dopamine, serotonin, and norepinephrine. It is typically administered orally as a treatment for phenylketonuria (PKU), an inherited metabolic disorder where the body cannot properly break down the amino acid phenylalanine. Sapropterin works by providing a source of BH4, which can help reduce the buildup of phenylalanine in the body. In some individuals with PKU, sapropterin can lead to significant improvements in cognitive function and reduce the risk of long-term complications associated with the disorder. Research on sapropterin is ongoing to explore its potential use in treating other conditions, such as hyperphenylalaninemia (HPA), a milder form of PKU, and other neurodevelopmental disorders.'

sapropterin: RN given refers to parent cpd; co-factor required for catalytic activity of nitric oxide synthases [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

(6R)-5,6,7,8-tetrahydrobiopterin : A 5,6,7,8-tetrahydrobiopterin in which the stereocentre at position 6 has R-configuration. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

sapropterin : A tetrahydropterin that is 2-amino-5,6,7,8-tetrahydropteridin-4(3H)-one in which a hydrogen at position 6 is substituted by a 1,2-dihydroxypropyl group (6R,1'R,2'S-enantiomer). [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Cross-References

ID SourceID
PubMed CID135398654
CHEMBL ID1201774
CHEBI ID59560
SCHEMBL ID258544
MeSH IDM0044450
PubMed CID15008
CHEMBL ID1531716
CHEBI ID173969
SCHEMBL ID43001
MeSH IDM0044450

Synonyms (137)

Synonym
dapropterin
CHEMBL1201774
daproterin
bh4 ,
6r-bh4
r-thbp
BCBCMAP01_000204
5,6,7,8-erythro-tetrahydrobiopterin
SMP1_000285
C16118
l-erythro-tetrahydrobiopterin
C00272
2-amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydoro-4(1h)-pteridinone
THB ,
DB00360
(-)-(6r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4(3h)-pteridinone
(6r)-l-erythro-5,6,7,8-tetrahydrobiopterin
sapropterin
6r-5,6,7,8-tetrahydrobiopterin
6r-l-5,6,7,8-tetrahydrobiopterin
(6r)-l-erythro-tetrahydrobiopterin
(6r)-2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydropteridin-4(1h)-one
(6r)-5,6,7,8-tetrahydrobiopterin
69081654-1FB6-4B89-B9B9-823C9887EE36
biopterin, 5,6,7,8-tetrahydro-
(6r)-5,6,7,8-tetrahydro-l-biopterin
(6r)-2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydro-1h-pteridin-4-one
62989-33-7
sapropterina
D08505
(6r)-2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydropteridin-4(3h)-one
CHEBI:59560 ,
27070-47-9
sapropterinum
sapropterin (inn)
tetrahydro-l-biopterin
4(1h)-pteridinone, 2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydro-, (6r)-
BMSE000911
bdbm50373697
sapropterin [vandf]
sapropterinum [inn-latin]
sapropterin [inn]
4(1h)-pteridinone, (6r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-
sapropterin [ema epar]
(6r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydropteridin-4(1h)-one
unii-egx657432i
sapropterin [mi]
egx657432i ,
tetrahydrobiopterin [who-dd]
sapropterina [inn-spanish]
(6r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4(1h)-pteridinone
sapropterin [who-dd]
tetrahydrobiopterin (thb)
(6r)-2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-3,4,5,6,7,8-hexahydropteridin-4-one
gtpl5276
SCHEMBL258544
W-203341
W-203533
(6r)-5,6,7,8-tetrahydro-l-biopterin 2hcl
2-amino-6r-(1r,2s-dihydroxypropyl)-5,6,7,8-tetrahydro-4(1h)-pteridinone
(6r)-tetrahydrobiopterin
DTXSID1041138
(6r)-2-amino-6-[(1r,2s)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydro-3h-pteridin-4-one
sapropterin free base
AKOS030231420
(6r)-erythro-5,6,7,8-tet-rahydrobiopterin
(r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydropteridin-4(1h)-one
NCGC00485328-01
2-amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydoro-4(1h)-5,6,7,8-tetrahydro-2-amino-6-(1,2-dihydroxypropyl)-4(1h)-pteridinone
2-amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4(1h)-pteridinone
2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydropteridin-4(3h)-one
BCP03735
EX-A2877
EN300-262982
(r)-2-amino-6-((1r,2s)-1,2-dihydroxy-propyl)-5,6,7,8-tetrahydro-1h-pteridin-4-one
CS-0014264
HY-A0124
sapropterina (inn-spanish)
a16ax07
sapropterine
sapropterinum (inn-latin)
(6r)-2-amino-6-((1r,2s)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydropteridin-4(3h)-one
BIDD:ER0369
unii-kn729w3lr0
kn729w3lr0 ,
4-08-00-02753 (beilstein handbook reference)
CHEBI:173969
butyrophenone, 2',4',5'-trihydroxy-
1-butanone, 1-(2,4,5-trihydroxyphenyl)-
usaf ek
nsc73478
thbp
nsc-73478
butyrophenone,4',5'-trihydroxy-
2,5-trihydroxybutyrophenone
2',5'-trihydroxybutyrophenone
wln: qr bq dq ev3
1-butanone,4,5-trihydroxyphenyl)-
1421-63-2
2',4',5'-trihydroxybutyrophenone
NCGC00091839-01
hsdb 4288
nsc 73478
brn 2577028
1-(2,4,5-trihydroxyphenyl)-1-butanone
2,4,5-trihydroxybutyrophenone
einecs 215-824-8
ai3-26870
ccris 6281
1-(2,4,5-trihydroxyphenyl)butan-1-one
1-butanone, 1-(2,4,5-trihydroxyphenyl)
AKOS003297818
NCGC00091839-04
NCGC00091839-03
NCGC00091839-02
NCGC00091839-05
cas-1421-63-2
dtxcid706232
tox21_400052
dtxsid2026232 ,
PS-5892
SCHEMBL43001
2,4,5-trihydroxybutyrophenone [mi]
2,4,5-trihydroxybutyrophenone [hsdb]
mfcd00020019
2,'4',5'-trihydroxybutyrophenone
SRUQARLMFOLRDN-UHFFFAOYSA-N
CHEMBL1531716
2',4',5'-trihydroxybutyrophenone, 8ci
5-butanoyl-1,2,4-benzeneetriol
2',4',5'-trihydroxy-butyrophenone
J-007611
F11160
2'4'5'-trihydroxybutyrophenone
Q27282340
2 ,4 ,5 -trihydroxybutyrophenone
CS-0446336

Research Excerpts

Toxicity

Sapropterin treatment was found to be safe and well tolerated at doses of 5 to 20mg/kg/day for an average exposure of 659 days. Most adverse events were considered unrelated to treatment, were mild or moderate in severity.

ExcerptReferenceRelevance
" An LD50 of approximately 260 mg/kg was obtained from acute (14-day) intraperitoneal survival studies."( The toxicity of tetrahydrobiopterin: acute and subchronic studies in mice.
Combs, AB; Folkers, K; Lewandowski, EM, 1986
)
0.27
" Tetrahydrobiopterin, an essential cofactor for tyrosine hydroxylase, may act as an antioxidant in dopaminergic neurones and protects against the toxic consequences of glutathione depletion."( Tetrahydrobiopterin precursor sepiapterin provides protection against neurotoxicity of 1-methyl-4-phenylpyridinium in nigral slice cultures.
Gramsbergen, JB; Hesslinger, C; Jansen, P; Madsen, JT; Meyer, M; Zimmer, J, 2003
)
0.32
" Sixty-eight (85%) patients had at least one adverse event (AE)."( Safety and efficacy of 22 weeks of treatment with sapropterin dihydrochloride in patients with phenylketonuria.
Bebchuk, J; Burton, BK; Christ-Schmidt, H; Crombez, E; Dorenbaum, A; Giovannini, M; Lee, P; Morris, AA; Seashore, M; Treacy, EP; Waber, L; Wasserstein, M; Wendel, U; Wolff, J, 2008
)
0.35
" Routine safety monitoring was performed at 3-month intervals and included adverse event reporting, blood Phe monitoring, clinical laboratory evaluations, physical examinations and vital sign measurements."( Safety of extended treatment with sapropterin dihydrochloride in patients with phenylketonuria: results of a phase 3b study.
Burton, BK; Chakrapani, A; Dorenbaum, A; Fernhoff, PM; Grange, DK; Hennermann, JB; Imperiale, M; Kim, SS; Lipson, M; Nowacka, M; Trefz, F, 2011
)
0.37
" Most adverse events were considered unrelated to treatment, were mild or moderate in severity, and were consistent with prior studies of sapropterin."( Safety of extended treatment with sapropterin dihydrochloride in patients with phenylketonuria: results of a phase 3b study.
Burton, BK; Chakrapani, A; Dorenbaum, A; Fernhoff, PM; Grange, DK; Hennermann, JB; Imperiale, M; Kim, SS; Lipson, M; Nowacka, M; Trefz, F, 2011
)
0.37
"Sapropterin treatment was found to be safe and well tolerated at doses of 5 to 20mg/kg/day for an average exposure of 659 days."( Safety of extended treatment with sapropterin dihydrochloride in patients with phenylketonuria: results of a phase 3b study.
Burton, BK; Chakrapani, A; Dorenbaum, A; Fernhoff, PM; Grange, DK; Hennermann, JB; Imperiale, M; Kim, SS; Lipson, M; Nowacka, M; Trefz, F, 2011
)
0.37
"BH4-therapy is efficient and safe before the age of 4 years in mild PKU, BH4-responsive patients."( Efficacy and safety of BH4 before the age of 4 years in patients with mild phenylketonuria.
Barth, M; de Parscau, L; Eyer, D; Feillet, F; Gilbert-Dussardier, B; Kuster, A; Labarthe, F; Leuret, O; Odent, S, 2012
)
0.38
" Only 1 nonserious adverse drug reaction occurred, an elevated alanine aminotransferase level in 1 patient."( Sapropterin is safe and effective in patients less than 4-years-old with BH4-responsive phenylalanine hydrolase deficiency.
Ohura, T; Shintaku, H, 2014
)
0.4
"Sapropterin therapy initiated before age 4 years was effective in maintaining serum phenylalanine level within the favorable range and was safe in Japanese patients with BH4-responsive PAH deficiency."( Sapropterin is safe and effective in patients less than 4-years-old with BH4-responsive phenylalanine hydrolase deficiency.
Ohura, T; Shintaku, H, 2014
)
0.4
" During the study, adverse events were reported in 24 (26."( [Open, non-comparative phase III clinical study to evaluate the efficacy and safety of sapropterin in patients with phenylketonuria and hyperphenylalaninemia].
Akhmadeeva, ÉN; Alimova, IL; Bazhenova, IuL; Borovik, TÉ; Bushueva, TV; Filimonova, MN; Garifullina, ÉR; Kostiakova, EA; Kovtun, OP; Kuzenkova, LM; Mardanova, AK; Minaĭcheva, LI; Nazarenko, LP; Pichkur, NA; Rozenson, OL; Saliukova, OA; Samonenko, NV; Seitova, GN; Shkurko, TA; Sivokha, VM, 2014
)
0.4
" Drug-related adverse events (AEs) were reported in 6% of subjects, were mostly considered non-serious, and were identified in the gastrointestinal, respiratory, and nervous systems."( Long-term safety and efficacy of sapropterin: the PKUDOS registry experience.
Arnold, GL; Cohen-Pfeffer, JL; Enns, GM; Ficicioglu, C; Longo, N; Parker, S; Pridjian, G, 2015
)
0.42
" Adverse effects of PN on other organ systems, such as brain and cardiovascular system, have been poorly studied."( Parenteral Nutrition and Cardiotoxicity.
Armstrong, A; Fedorova, M; Jain, A; Krebs, J; Manithody, C; Murali, V; Samaddar, A; Song, E; van Nispen, J; Voigt, M, 2021
)
0.62

Pharmacokinetics

The objective of the current study was to characterize the pharmacokinetics and pharmacokinetic variability of sapropterin. The mean (SD) terminal half-life of sa Propterin was 6.

ExcerptReferenceRelevance
" Furthermore, BH(4) and total biopterin were measured at different time intervals (up to 33 h after oral administration) and pharmacokinetic parameters T(max) (1-4h), C(max) (258."( Plasma tetrahydrobiopterin and its pharmacokinetic following oral administration.
Ballhausen, D; Blau, N; Fiege, B; Goriounov, D; Kierat, L; Leimbacher, W; Schircks, B; Thöny, B, 2004
)
0.32
" The following pharmacokinetic parameters were calculated for BH(4) in blood: t (max) = 4 h, AUC (T(0-32)) = 370 nmol x h/g Hb, and t (1/2) for absorption (1."( Pharmacokinetics of orally administered tetrahydrobiopterin in patients with phenylalanine hydroxylase deficiency.
Blau, N; Demirkol, M; Fiege, B; Fiori, L; Gärtner, KH; Giovannini, M; Ozen, I; Thöny, B; Zurflüh, MR, 2006
)
0.33
" The objective of the current study was to characterize the pharmacokinetics and pharmacokinetic variability of sapropterin and to identify the characteristics that influence this variability."( Pharmacokinetics of sapropterin in patients with phenylketonuria.
Clarke, L; Dorenbaum, A; Feillet, F; Foehr, E; Giovannini, M; Green, B; Harmatz, P; Lipson, M; Meli, C; Morris, AA; Mould, DR, 2008
)
0.35
" Blood samples for the pharmacokinetic analysis were obtained during weeks 6, 10 and 12."( Pharmacokinetics of sapropterin in patients with phenylketonuria.
Clarke, L; Dorenbaum, A; Feillet, F; Foehr, E; Giovannini, M; Green, B; Harmatz, P; Lipson, M; Meli, C; Morris, AA; Mould, DR, 2008
)
0.35
" Pharmacokinetics did not differ between Pah(enu1/1) and Pah(enu1/2) indicating that the differences in pharmacodynamics were not induced by divergent pharmacokinetic behavior of BH(4)."( New insights into tetrahydrobiopterin pharmacodynamics from Pah enu1/2, a mouse model for compound heterozygous tetrahydrobiopterin-responsive phenylalanine hydroxylase deficiency.
Danecka, MK; Eichinger, A; Fingerhut, R; Gersting, SW; Glossmann, H; Lagler, FB; Muntau, AC; Staudigl, M; Steinbacher, A; Zsifkovits, C, 2010
)
0.36
"The best pharmacokinetic model was a one-compartment model with an absorption lag, first-order input, and linear elimination, with a factor describing endogenous BH4 levels."( A prospective population pharmacokinetic analysis of sapropterin dihydrochloride in infants and young children with phenylketonuria.
Merilainen, M; Mould, DR; Musson, DG; Qi, Y; Zhou, H, 2015
)
0.42

Bioavailability

This study compared the relative oral bioavailability of sapropterin when administered as intact and dissolved tablets. The relative bioavailability was assessed based on C(max), AUC(0-t), and AUC('infinity')

ExcerptReferenceRelevance
" Our results support the hypothesis that intracellular tetrahydrobiopterin levels are tightly linked to tyrosine hydroxylation and that tetrahydrobiopterin bioavailability modulates catecholamine synthesis."( Vasoactive intestinal peptide induces both tyrosine hydroxylase activity and tetrahydrobiopterin biosynthesis in PC12 cells.
Anastasiadis, PZ; Bezin, L; Blitz, J; Gordon, LJ; Imerman, B; Kuhn, DM; Levine, RA, 1998
)
0.3
"Conditions associated with impaired nitric oxide (NO) activity and accelerated atherosclerosis have been shown to be associated with a reduced bioavailability of tetrahydrobiopterin (BH4)."( Tetrahydrobiopterin improves endothelium-dependent vasodilation in chronic smokers : evidence for a dysfunctional nitric oxide synthase.
Brockhoff, C; Heitzer, T; Henne, S; Mayer, B; Meinertz, T; Mollnau, H; Münzel, T; Warnholtz, A, 2000
)
0.31
" Recent reports suggest that vitamin C may prevent endothelial dysfunction by scavenging free radicals and increasing the bioavailability of nitric oxide."( Effect of vitamin C on the availability of tetrahydrobiopterin in human endothelial cells.
Baker, TA; Katusic, ZS; Milstien, S, 2001
)
0.31
" It is concluded that altered bioavailability of tetrahydrobiopterin is involved in the pathophysiology of endothelial dysfunction seen in nitroglycerin tolerance."( Tetrahydrobiopterin improves endothelium-dependent vasodilation in nitroglycerin-tolerant rats.
Aldershvile, J; Boesgaard, S; Gruhn, N, 2001
)
0.31
"Intracoronary infusion of BH4 restores coronary endothelial function by improving the bioavailability of endothelium derived nitric oxide in hypercholesterolaemic patients."( Tetrahydrobiopterin restores endothelial function of coronary arteries in patients with hypercholesterolaemia.
Chayama, K; Fukuda, Y; Matsuda, K; Matsuura, H; Teragawa, H; Yamagata, T, 2002
)
0.31
"Reduced bioavailability of tetrahydrobiopterin (BH4), an essential cofactor for nitric oxide (NO) synthase, and the resulting decrease in NO in the coronary circulation may be involved in the pathogenesis of coronary spasm."( Tetrahydrobiopterin improves coronary endothelial function, but does not prevent coronary spasm in patients with vasospastic angina.
Chayama, K; Fukuda, Y; Matsuda, K; Matsuura, H; Teragawa, H; Yamagata, T, 2002
)
0.31
" Nitric oxide is a vasodilator that plays a key role in blood pressure regulation, and previous studies have shown that a reduction in nitric oxide production or bioavailability contributes to hypertension."( Impaired vasodilation and nitric oxide synthase activity in glucocorticoid-induced hypertension.
Mitchell, BM; Webb, RC, 2002
)
0.31
" Collectively, these findings suggest that in diabetic arterioles, due to the reduced bioavailability of BH(4), the synthesis of NO by eNOS is limited, resulting in a reduced flow-induced dilation, a mechanism that may also be responsible for the development of diabetic microangiopathy and exacerbation of other vascular diseases."( Lack of nitric oxide mediation of flow-dependent arteriolar dilation in type I diabetes is restored by sepiapterin.
Bagi, Z; Koller, A,
)
0.13
" During oxidative stress, endothelial nitric oxide (NO) synthase (eNOS) becomes uncoupled because of decreased bioavailability of tetrahydrobiopterin (BH4), an essential cofactor of eNOS."( Tetrahydrobiopterin restores endothelial dysfunction induced by an oral glucose challenge in healthy subjects.
Dominguez, H; Hermann, T; Ihlemann, N; Køber, L; Perner, A; Rask-Madsen, C; Torp-Pedersen, C, 2003
)
0.32
"Previous studies have shown that endothelial dysfunction after 5/6 nephrectomy (5/6 Nx) in rats is associated with decreased nitric oxide (NO) bioavailability and increased vascular superoxide production."( Effect of tetrahydrobiopterin on blood pressure in rats after subtotal nephrectomy.
Benchetrit, S; Bernheim, J; Podjarny, E; Pomeranz, A; Rashid, G; Rathaus, M; Shapira, J, 2003
)
0.32
" These results suggest that prolonged exposure of rabbits to oral arsenate may impair the bioavailability of BH(4) in endothelial cells and, as a consequence, disrupt the balance between NO and O2(."( A potential mechanism for the impairment of nitric oxide formation caused by prolonged oral exposure to arsenate in rabbits.
Hayashi, T; Horiguchi, S; Itoh, K; Kumagai, Y; Nikaido, M; Pi, J; Shimojo, N; Sun, G; Sun, Y; Waalkes, MP; Yamamoto, M; Yamauchi, H, 2003
)
0.32
" Hyperhomocysteinemia impairs endothelial function, in part due to a diminished bioavailability of BH4 with resultant uncoupling of nitric oxide synthase."( Tetrahydrobiopterin attenuates homocysteine induced endothelial dysfunction.
Badiwala, MV; Dhillon, B; Li, SH; Maitland, A; Rao, V; Verma, S, 2003
)
0.32
" This study set out to test the hypothesis that in vivo gene transfer of GTPCH I to endothelial cells could increase bioavailability of BH4, enhance biosynthesis of nitric oxide and thereby enhance endothelium-dependent relaxations mediated by nitric oxide."( In vivo expression and function of recombinant GTPCH I in the rabbit carotid artery.
Hynes, SO; Katusic, ZS; Kovesdi, I; O'Brien, T; Richardson, DM; Smith, LA, 2004
)
0.32
" Loss of NO bioavailability due to reduced synthesis and increased scavenging by reactive oxygen species is a cardinal feature of endothelial dysfunction in vascular disease states."( Regulation of endothelial nitric oxide synthase by tetrahydrobiopterin in vascular disease.
Alp, NJ; Channon, KM, 2004
)
0.32
"Atherosclerosis is associated with an impairment of endothelium-dependent relaxations, which represents the reduced bioavailability of nitric oxide (NO) produced from endothelial NO synthase (eNOS)."( Dysfunction of endothelial nitric oxide synthase and atherosclerosis.
Kawashima, S; Yokoyama, M, 2004
)
0.32
" Collectively, these findings suggest that in skeletal muscle arterioles, a transient elevation of glucose via its increased metabolism, elicits enhanced production of superoxide, which decreases the bioavailability of NO and the level of the NOS cofactor BH(4), resulting in a reduction of FID mediated by NO."( Microvascular dysfunction after transient high glucose is caused by superoxide-dependent reduction in the bioavailability of NO and BH(4).
Bagi, Z; Kaley, G; Koller, A; Toth, E, 2004
)
0.32
" Whether eNOS catalyzes nitric oxide biosynthesis or the synthesis of reactive oxygen species such as superoxide, hydrogen peroxide, and peroxynitrite is dictated by the bioavailability of tetrahydrobiopterin (BH(4)) and L-arginine during eNOS catalysis."( Three different oxygen-induced radical species in endothelial nitric-oxide synthase oxygenase domain under regulation by L-arginine and tetrahydrobiopterin.
Berka, V; Palmer, G; Tsai, AL; Wu, G; Yeh, HC, 2004
)
0.32
" A potential mechanism is the correction of endothelial dysfunction (ED) leading to reduced production of reactive oxygen species and enhanced bioavailability of nitric oxide (NO), a potent apoptosis inducer."( Synergistic interaction between enalapril, L-arginine and tetrahydrobiopterin in smooth muscle cell apoptosis and aortic remodeling induction in SHR.
deBlois, D; Der Sarkissian, S; Duguay, D; Marchand, EL, 2004
)
0.32
" The direct relationship between impaired endothelium-derived NO bioavailability and platelet activation remains unclear."( Reduced vascular NO bioavailability in diabetes increases platelet activation in vivo.
Alp, NJ; Bauersachs, J; Cai, S; Channon, KM; Eigenthaler, M; Lygate, CA; Neubauer, S; Schäfer, A, 2004
)
0.32
" Acute loss of systemic NO bioavailability causes platelet activation."( Reduced vascular NO bioavailability in diabetes increases platelet activation in vivo.
Alp, NJ; Bauersachs, J; Cai, S; Channon, KM; Eigenthaler, M; Lygate, CA; Neubauer, S; Schäfer, A, 2004
)
0.32
" Reduced bioavailability of nitric oxide (NO) and abundant formation of reactive oxygen species (ROS) within the vascular wall are the key determinants in endothelial dysfunction."( Endothelial dysfunction in heart failure: mechanisms and therapeutic approaches.
Bauersachs, J; Schäfer, A, 2004
)
0.32
" Vitamin C, folate, and other antioxidants enhance endothelial BH4 bioavailability through chemical stabilization or scavenging of reactive oxygen species, thereby contributing to the maintenance of physiological homeostasis in the endothelium."( Regulation of tetrahydrobiopterin synthesis and bioavailability in endothelial cells.
Hatakeyama, K; Haynes, TE; Meininger, CJ; Shi, W; Wu, G, 2004
)
0.32
" A reduction of NO bioavailability leads to endothelial dysfunction that has been shown to be improved by alpha-tocopherol in certain conditions."( Alpha-Tocopherol and endothelial nitric oxide synthesis.
Heller, R; Werner, ER; Werner-Felmayer, G, 2004
)
0.32
" Modulation of BH4 bioavailability is an important therapeutic target for restenosis."( Tetrahydrobiopterin deficiency exaggerates intimal hyperplasia after vascular injury.
Bonneau, D; Cherng, WJ; Errett, L; Fedak, PW; Hung, A; Hyland, K; Latter, DA; Leclerc, Y; Li, RK; Li, SH; Rao, V; Verma, S; Wang, CH; Weisel, RD, 2005
)
0.33
" Nitric oxide (NO) bioavailability and O2- generation in aortic tissues of GK rats were assessed using the Griess reaction and a lucigenin-chemiluminescence-based technique, respectively."( Nitric oxide dynamics and endothelial dysfunction in type II model of genetic diabetes.
Al-Mulla, F; Al-Saleh, E; Bitar, MS; Dhaunsi, GS; Mustafa, S; Wahid, S, 2005
)
0.33
" Loss of endothelial nitric oxide bioavailability is implicated in pulmonary hypertension pathogenesis."( Pivotal role for endothelial tetrahydrobiopterin in pulmonary hypertension.
Alp, NJ; Bendall, JK; Channon, KM; Khoo, JP; Nicoli, T; Rockett, K; Wilkins, MR; Zhao, L, 2005
)
0.33
" bioavailability in the endothelium."( Endothelial dihydrofolate reductase: critical for nitric oxide bioavailability and role in angiotensin II uncoupling of endothelial nitric oxide synthase.
Cai, H; Chalupsky, K, 2005
)
0.33
" In this regard, we investigated the role of tetrahydrobiopterin (BH4) bioavailability in regulating endothelial nitric oxide synthase (eNOS) activity, dimerisation and SO production in streptozotocin-induced diabetic mice."( Endothelial nitric oxide synthase dysfunction in diabetic mice: importance of tetrahydrobiopterin in eNOS dimerisation.
Alp, NJ; Cai, S; Channon, KM; Khoo, J; Mussa, S, 2005
)
0.33
"Control of the catalytic activity of iNOS in adhesion fibroblasts may be because of subsaturating amounts of L-Arg and H4B which allow iNOS to generate a combination of reactive oxygen species in addition to NO, thereby influencing NO bioavailability and function."( Regulation of inducible nitric oxide synthase in post-operative adhesions.
Abu-Soud, HM; Diamond, MP; Saed, GM; Zhao, M, 2006
)
0.33
"We investigated whether the effect of estrogen therapy on vascular endothelial function is mediated through increasing the bioavailability of tetrahydrobiopterin (BH4) and associated antioxidant capacity in ovariectomized (Ovx) rats."( Estrogen therapy replenishes vascular tetrahydrobiopterin and reduces oxidative stress in ovariectomized rats.
Chen, SY; Hsiao, G; Lam, KK; Lee, YM; Yen, MH,
)
0.13
" bioavailability and protect against hepatic ischemia-reperfusion (I-R) injury in type 2 diabetes mellitus."( eNOS gene therapy exacerbates hepatic ischemia-reperfusion injury in diabetes: a role for eNOS uncoupling.
Champion, HC; Dugas, TR; Duranski, MR; Elrod, JW; Greer, JJ; Kevil, CG; Langston, W; Lefer, DJ; Tao, L, 2006
)
0.33
" Decreased nitric oxide (NO) bioavailability and increased vascular superoxide production in vascular disease states are due in part to endothelial NO synthase (eNOS) uncoupling related to deficiency of the eNOS cofactor tetrahydrobiopterin (BH4), but whether this mechanism is important in human atherosclerosis and represents a rational therapeutic target remains unclear."( 5-methyltetrahydrofolate rapidly improves endothelial function and decreases superoxide production in human vessels: effects on vascular tetrahydrobiopterin availability and endothelial nitric oxide synthase coupling.
Antoniades, C; Cai, S; Channon, KM; de Bono, J; Lee, J; Leeson, P; Neubauer, S; Pillai, R; Ratnatunga, C; Refsum, H; Shirodaria, C; Warrick, N, 2006
)
0.33
" Evaluation of endothelial function seems to have a predictive role in humans, and therapeutic interventions improving nitric oxide bioavailability in the vasculature may improve the long-term outcome in healthy individuals, high-risk subjects, or patients with advanced atherosclerosis."( Novel therapies targeting vascular endothelium.
Antoniades, C; Koumallos, N; Latsios, G; Marinou, K; Stefanadi, E; Stefanadis, C; Tousoulis, D,
)
0.13
" Reduced nitric oxide bioavailability by interaction with reactive oxygen species is implicated in endothelial dysfunction (ED)."( (6R)-5,6,7,8-tetrahydro-L-biopterin and its stereoisomer prevent ischemia reperfusion injury in human forearm.
Casas, JP; Harris, J; Heales, S; Hingorani, AD; MacAllister, RJ; Mayahi, L; Owen, D, 2007
)
0.34
" NO bioavailability is reduced early in vascular disease states, such as hypercholesterolaemia, diabetes and hypertension, and throughout the progression of atherosclerosis."( Mechanisms for the role of tetrahydrobiopterin in endothelial function and vascular disease.
Alp, NJ; Schmidt, TS, 2007
)
0.34
"Reduced nitric oxide (NO) bioavailability is a key mechanism in the development of endothelial dysfunction."( Effects of tetrahydrobiopterin on coronary vascular reactivity in atherosclerotic human coronary arteries.
Anderson, TJ; Curtis, MJ; Goodhart, DM; Kanani, RS; Sun, Y; Sun, YH; Worthley, MI, 2007
)
0.34
" We tested whether increased reactive oxygen species (superoxide and peroxynitrite) production and decreased bioavailability of the endothelial nitric oxide (NO) synthase (eNOS) cofactor tetrahydrobiopterin (BH4) contributes to maternal endothelial dysfunction in rats with pregnancy-induced hypertension and several characteristics of preeclampsia."( Uncoupled endothelial nitric oxide synthase and oxidative stress in a rat model of pregnancy-induced hypertension.
Cook, LG; Danchuk, S; Mitchell, BM; Puschett, JB, 2007
)
0.34
"Endothelial dysfunction in the setting of cardiovascular risk factors such as hypercholesterolemia, diabetes mellitus, chronic smoking, as well hypertension, is, at least in part, dependent of the production of reactive oxygen species (ROS) and the subsequent decrease in vascular bioavailability of nitric oxide (NO)."( Nitric oxide, tetrahydrobiopterin, oxidative stress, and endothelial dysfunction in hypertension.
Daiber, A; Jansen, T; Münzel, T; Schulz, E; Wenzel, P, 2008
)
0.35
"Recently, peroxisome proliferator-activated receptor gamma (PPARgamma) ligands have been reported to increase nitric oxide (NO) bioavailability in vitro but not in vivo because of the difficulty of measuring plasma NO."( Effects of pioglitazone on nitric oxide bioavailability measured using a catheter-type nitric oxide sensor in angiotensin II-infusion rabbit.
Akasaka, T; Goto, M; Ikejima, H; Imanishi, T; Kobayashi, K; Kuroi, A; Mochizuki, S; Yoshida, K, 2008
)
0.35
" Diminished antioxidant capacity increases vascular superoxide levels, which reduce NO bioavailability and promote peroxynitrite generation."( Vascular oxidative stress and nitric oxide depletion in HIV-1 transgenic rats are reversed by glutathione restoration.
Dikalov, S; Guidot, DM; Hart, CM; Jones, DP; Kleinhenz, DJ; Kline, ER; Liang, B; Sutliff, RL, 2008
)
0.35
"We examined whether nitroglycerin (NTG)-induced impairment of nitric oxide (NO) bioavailability could be modified by a peroxisome proliferator-activated receptor (PPAR) gammaagonist."( Effect of pioglitazone on nitroglycerin-induced impairment of nitric oxide bioavailability by a catheter-type nitric oxide sensor.
Akasaka, T; Goto, M; Ikejima, H; Imanishi, T; Kuroi, A; Mochizuki, S; Muragaki, Y; Tsujioka, H; Yoshida, K, 2008
)
0.35
"This study sought to determine the effects of endogenous tetrahydrobiopterin (BH4) bioavailability on endothelial nitric oxide synthase (eNOS) coupling, nitric oxide (NO) bioavailability, and vascular superoxide production in patients with coronary artery disease (CAD)."( GCH1 haplotype determines vascular and plasma biopterin availability in coronary artery disease effects on vascular superoxide production and endothelial function.
Alp, NJ; Antoniades, C; Channon, KM; Costigan, M; Cunnington, C; Diesch, J; Guzik, TJ; Leeson, P; Lötsch, J; Shirodaria, C; Stefanadis, C; Tegeder, I; Tousoulis, D; Van Assche, T; Woolf, CJ, 2008
)
0.35
"GCH1 gene expression, modulated by a particular GCH1 haplotype, is a major determinant of BH4 bioavailability both in plasma and in the vascular wall in patients with CAD."( GCH1 haplotype determines vascular and plasma biopterin availability in coronary artery disease effects on vascular superoxide production and endothelial function.
Alp, NJ; Antoniades, C; Channon, KM; Costigan, M; Cunnington, C; Diesch, J; Guzik, TJ; Leeson, P; Lötsch, J; Shirodaria, C; Stefanadis, C; Tegeder, I; Tousoulis, D; Van Assche, T; Woolf, CJ, 2008
)
0.35
"We investigated whether aliskiren, a direct renin inhibitor, improves NO bioavailability and protects against spontaneous atherosclerotic changes."( Renin inhibitor aliskiren improves impaired nitric oxide bioavailability and protects against atherosclerotic changes.
Akasaka, T; Goto, M; Ikejima, H; Imanishi, T; Kitabata, H; Kuroi, A; Mochizuki, S; Muragaki, Y; Takarada, S; Tanimoto, T; Tsujioka, H; Yoshida, K, 2008
)
0.35
"In a prospectively planned analysis, the apparent clearance, apparent volume of distribution, absorption rate constant and associated interindividual variabilities of each parameter were estimated by modelling observed BH4 plasma concentration-time data."( Pharmacokinetics of sapropterin in patients with phenylketonuria.
Clarke, L; Dorenbaum, A; Feillet, F; Foehr, E; Giovannini, M; Green, B; Harmatz, P; Lipson, M; Meli, C; Morris, AA; Mould, DR, 2008
)
0.35
"Application of BH4 in high doses is safe and enhances formation of cGMP, pointing to increased bioavailability of NO."( Effects of tetrahydrobiopterin on nitric oxide bioavailability and renal hemodynamics in healthy volunteers.
Artunc, F; Artunc, N; Boehmer, G; Erley, CM; Essig, M; Haering, HU; Plachtzik, C; Reich, M; Risler, T,
)
0.13
" In aged cells with an uncoupled NOS3 as shown by the reduced BH(4) level, the increase in superoxide anion and the lower production of cGMP and the decrease in NO bioavailability were linearly correlated with the increase in basal [Ca(2+)](i)."( Effect of uncoupling endothelial nitric oxide synthase on calcium homeostasis in aged porcine endothelial cells.
Boucher, JL; Fournet-Bourguignon, MP; Frapart, Y; Gosgnach, W; Lesage, L; Molez, S; Perrier, E; Reure, H; Royere, E; Vilaine, JP; Villeneuve, N, 2009
)
0.35
" This phenotype appears to result from a decline in NO bioavailability that results from a reduction in NO biosynthesis, inactivation of NO by superoxide, or both."( Dietary nitrite prevents hypercholesterolemic microvascular inflammation and reverses endothelial dysfunction.
Bryan, NS; Dugas, TR; Garg, H; Guidry, E; Stokes, KY; Tang, Y, 2009
)
0.35
" However, the relative importance of GTPCH expression versus GTPCH activity and the role of GFRP in relation to BH4 bioavailability remain uncertain."( GTP cyclohydrolase I expression, protein, and activity determine intracellular tetrahydrobiopterin levels, independent of GTP cyclohydrolase feedback regulatory protein expression.
Alp, NJ; Cai, S; Channon, KM; Crabtree, MJ; Tatham, AL; Warrick, N, 2009
)
0.35
" Local BH(4) supplementation augments reflex and tyramine-induced VC in aged skin, suggesting that reduced BH(4) bioavailability may contribute to attenuated VC during whole-body cooling."( Local tetrahydrobiopterin administration augments cutaneous vasoconstriction in aged humans.
Holowatz, LA; Kenney, WL; Lang, JA, 2009
)
0.35
"Tetrahyrobiopterin (BH4) is a required cofactor for the synthesis of nitric oxide by endothelial nitric-oxide synthase (eNOS), and BH4 bioavailability within the endothelium is a critical factor in regulating the balance between NO and superoxide production by eNOS (eNOS coupling)."( Critical role for tetrahydrobiopterin recycling by dihydrofolate reductase in regulation of endothelial nitric-oxide synthase coupling: relative importance of the de novo biopterin synthesis versus salvage pathways.
Alp, NJ; Channon, KM; Crabtree, MJ; Hale, AB; Tatham, AL, 2009
)
0.35
" These data suggest that eNOS uncoupling and increased nitrosylation of eNOS, decreased expressions of GTP cyclohydrolase I and sepiapterin reductase, and subsequent reduced BH4 bioavailability may be important contributors of endothelial dysfunction in aged vessels."( eNOS uncoupling and endothelial dysfunction in aged vessels.
Huang, A; Kaley, G; Sun, D; Yang, YM, 2009
)
0.35
" According to a widely held view, oxidation of tetrahydrobiopterin (BH(4)) by peroxynitrite causes uncoupling of endothelial NO synthase (eNOS), resulting in reduced NO bioavailability and endothelial dysfunction under conditions of oxidative stress."( Evidence against tetrahydrobiopterin depletion of vascular tissue exposed to nitric oxide/superoxide or nitroglycerin.
Mayer, B; Rehn, M; Schmidt, K; Stessel, H; Wölkart, G, 2010
)
0.36
" These data are consistent with the concept that reduced bioavailability of BH(4) and/or tyrosine may impair noradrenaline synthesis and contribute to the attenuated vasoconstrictor response in aged skin."( Localized tyrosine or tetrahydrobiopterin supplementation corrects the age-related decline in cutaneous vasoconstriction.
Holowatz, LA; Kenney, WL; Lang, JA, 2010
)
0.36
"This study compared the relative oral bioavailability of sapropterin when administered as intact and dissolved tablets."( Relative bioavailability of sapropterin from intact and dissolved sapropterin dihydrochloride tablets and the effects of food: a randomized, open-label, crossover study in healthy adults.
Bieberdorf, FA; Dorenbaum, A; Foehr, ED; Hornfeldt, CS; Kim, SS; Kramer, WG; Musson, DG, 2010
)
0.36
" The relative bioavailability of sapropterin from the 3 dosing regimens was assessed based on C(max), AUC(0-t), and AUC(0-infinity), estimated from calculated plasma tetrahydrobiopterin concentrations using a noncompartmental model."( Relative bioavailability of sapropterin from intact and dissolved sapropterin dihydrochloride tablets and the effects of food: a randomized, open-label, crossover study in healthy adults.
Bieberdorf, FA; Dorenbaum, A; Foehr, ED; Hornfeldt, CS; Kim, SS; Kramer, WG; Musson, DG, 2010
)
0.36
" The bioavailability of BH(4) is an important determinant of the pulmonary vascular response to hypoxia."( Tetrahydrobiopterin and the regulation of hypoxic pulmonary vasoconstriction.
Francis, BN; Wilkins, MR; Zhao, L, 2010
)
0.36
" Here, we present evidence that TMECG markedly reduces melanoma H(4)B and NO bioavailability and that TMECG action is abolished by the eNOS inhibitor N(omega)-nitro-L-arginine methyl ester or the H(2)O(2) scavenger catalase, which strongly suggests H(2)O(2)-dependent DHFR downregulation."( Mechanism of dihydrofolate reductase downregulation in melanoma by 3-O-(3,4,5-trimethoxybenzoyl)-(-)-epicatechin.
Cabezas-Herrera, J; Chazarra, S; Montenegro, MF; Rodríguez-López, JN; Sánchez-del-Campo, L, 2010
)
0.36
" This study investigated the effects of radiation on BH4 bioavailability and of GT3 on BH4 metabolism."( Reduction of radiation-induced vascular nitrosative stress by the vitamin E analog γ-tocotrienol: evidence of a role for tetrahydrobiopterin.
Berbee, M; Boerma, M; Fu, Q; Hauer-Jensen, M; Kumar, KS; Pathak, R; Zhou, D, 2011
)
0.37
"BH4 bioavailability is reduced in the early postradiation phase."( Reduction of radiation-induced vascular nitrosative stress by the vitamin E analog γ-tocotrienol: evidence of a role for tetrahydrobiopterin.
Berbee, M; Boerma, M; Fu, Q; Hauer-Jensen, M; Kumar, KS; Pathak, R; Zhou, D, 2011
)
0.37
" The present study demonstrated that iNOS-derived superoxide generation was reduced, and that the NO bioavailability was increased, by treatment with the NOS-cofactor, tetrahydrobiopterin (BH4), before I/R in the hearts isolated from diabetic rats."( Reversal of inducible nitric oxide synthase uncoupling unmasks tolerance to ischemia/reperfusion injury in the diabetic rat heart.
Fujita, M; Ito, S; Iwasaka, T; Katano, T; Okazaki, T; Otani, H; Shimazu, T; Yoshioka, K, 2011
)
0.37
"Tetrahydrobiopterin (BH4) is a required cofactor for the synthesis of NO by endothelial nitric oxide synthase (eNOS), and endothelial BH4 bioavailability is a critical factor in regulating the balance between NO and superoxide production (eNOS coupling)."( Dihydrofolate reductase protects endothelial nitric oxide synthase from uncoupling in tetrahydrobiopterin deficiency.
Channon, KM; Crabtree, MJ; Hale, AB, 2011
)
0.37
" It is therefore likely that net BH4 cellular bioavailability reflects the balance between de novo BH4 synthesis, loss of BH4 by oxidation to BH2, and the regeneration of BH4 by DHFR."( Synthesis and recycling of tetrahydrobiopterin in endothelial function and vascular disease.
Channon, KM; Crabtree, MJ, 2011
)
0.37
" Levels of nitrite and nitrate (NO(x)), as an index of nitric oxide, bioavailability were significantly decreased in the iNOS(-/-) diabetic mouse heart."( Inhibition of nitric oxide synthase uncoupling by sepiapterin improves left ventricular function in streptozotocin-induced diabetic mice.
Fujita, M; Iwasaka, T; Jo, F; Jo, H; Kosaki, A; Okazaki, T; Otani, H; Shimazu, T; Yoshioka, K, 2011
)
0.37
" Previous studies showed that uncoupled endothelial nitric oxide (NO) synthase (eNOS) activity and increased NADPH oxidase activity resulted in marked decreases in NO bioavailability and impaired angiogenesis in PPHN."( Sepiapterin improves angiogenesis of pulmonary artery endothelial cells with in utero pulmonary hypertension by recoupling endothelial nitric oxide synthase.
Bakhutashvili, I; Du, J; Eis, A; Konduri, GG; Pritchard, KA; Shi, Y; Teng, RJ; Xu, H, 2011
)
0.37
" Using a combination of gene silencing and pharmacological approaches, we demonstrate that eNOS-caveolin-1 association is increased under conditions of reduced pterin bioavailability and that this sequestration serves to suppress eNOS uncoupling."( Suppression of eNOS-derived superoxide by caveolin-1: a biopterin-dependent mechanism.
Cardounel, AJ; Chen, CA; Druhan, LJ; Karuppiah, K; Sessa, WC; Smith, T; Zweier, JL, 2011
)
0.37
"We first examined the association of statin treatment with vascular NO bioavailability and arterial superoxide (O(2)(·-)) in 492 patients undergoing coronary artery bypass graft surgery."( Rapid, direct effects of statin treatment on arterial redox state and nitric oxide bioavailability in human atherosclerosis via tetrahydrobiopterin-mediated endothelial nitric oxide synthase coupling.
Antoniades, C; Antonopoulos, AS; Bakogiannis, C; Bendall, J; Casadei, B; Channon, KM; Demosthenous, M; Guzik, TJ; Hale, A; Leeson, P; Marinou, K; Paschalis, A; Psarros, C; Stefanadis, C; Tousoulis, D; Triantafyllou, C; Zhang, MH, 2011
)
0.37
" Atorvastatin directly improves vascular NO bioavailability and reduces vascular O(2)(·-) through tetrahydrobiopterin-mediated endothelial NO synthase coupling."( Rapid, direct effects of statin treatment on arterial redox state and nitric oxide bioavailability in human atherosclerosis via tetrahydrobiopterin-mediated endothelial nitric oxide synthase coupling.
Antoniades, C; Antonopoulos, AS; Bakogiannis, C; Bendall, J; Casadei, B; Channon, KM; Demosthenous, M; Guzik, TJ; Hale, A; Leeson, P; Marinou, K; Paschalis, A; Psarros, C; Stefanadis, C; Tousoulis, D; Triantafyllou, C; Zhang, MH, 2011
)
0.37
"Oxidative stress may cause a loss of tetrahydrobiopterin (BH4), a co-factor of nitric oxide synthase (NOS), decrease the bioavailability of NO and aggravate ischemia/reperfusion (I/R) injury in diabetic heart."( Ascorbic acid and N-acetyl cysteine prevent uncoupling of nitric oxide synthase and increase tolerance to ischemia/reperfusion injury in diabetic rat heart.
Fujita, M; Iwasaka, T; Okazaki, T; Otani, H; Shimazu, T; Yoshioka, K, 2011
)
0.37
" Since tetrahydrobiopterin (BH(4)) is an essential cofactor for endothelial nitric oxide synthase (NOS3), decreased bioavailability of the substrate l-arginine and/or BH(4) may contribute to decreased NO production with hypercholesterolaemia."( Acute localized administration of tetrahydrobiopterin and chronic systemic atorvastatin treatment restore cutaneous microvascular function in hypercholesterolaemic humans.
Holowatz, LA; Kenney, WL, 2011
)
0.37
" These findings suggest that growth-related increases in arteriolar NO bioavailability may be due at least partially to changes in the regulation of eNOS phosphorylation and increased signaling activity, with no change in the abundance of eNOS signaling proteins."( Changes in eNOS phosphorylation contribute to increased arteriolar NO release during juvenile growth.
Boegehold, MA; Kang, LS; Nurkiewicz, TR; Wu, G, 2012
)
0.38
" In addition, decreased bioavailability and impaired synthesis of BH(4) by GTP-CH induced by insulin promoted NOS uncoupling."( Insulin-induced generation of reactive oxygen species and uncoupling of nitric oxide synthase underlie the cerebrovascular insulin resistance in obese rats.
Busija, DW; Katakam, PV; Snipes, JA; Steed, MM, 2012
)
0.38
" Elimination of tetrahydrobiopterin (BH(4)) and nitric oxide (NO) bioavailability may contribute to the aggravation of DN."( Advanced glycation end products-mediated hypertrophy is negatively regulated by tetrahydrobiopterin in renal tubular cells.
Chuang, LY; Guh, JY; Huang, JS; Lee, YH; Liao, YC; Shi, MD, 2012
)
0.38
" In ischemic conditions, decreased NO bioavailability was observed because of increased oxidative stress, decreased L-arginine and tetrahydrobiopterin."( Tetrahydrobiopterin, L-arginine and vitamin C actsynergistically to decrease oxidative stress, increase nitricoxide and improve blood flow after induction of hindlimbischemia in the rat.
Messina, LM; Tie, G; Yan, J, 2012
)
0.38
" Preincubation with sepiapterin (10 μmol/l for 30 min) failed to improve NO(·) bioavailability in hypertensive aortas while it augmented NO(·) production from control vessels, implicating a hypertension-associated deficiency in sepiapterin reductase (SPR), the rate-limiting enzyme for sepiapterin conversion to H(4)B."( Endothelium-specific sepiapterin reductase deficiency in DOCA-salt hypertension.
Blair, J; Cai, H; Harrison, DG; Laude, KM; McCann, LA; Oak, JH; Wang, T; Youn, JY, 2012
)
0.38
" In rats with streptozotocin-induced diabetes, nitric oxide (NO) bioavailability was reduced by uncoupling eNOS, characterized by a reduction in tetrahydrobiopterin (BH(4)) levels and a decrease in the eNOS dimer-to-monomer ratio."( Uncoupling endothelial nitric oxide synthase is ameliorated by green tea in experimental diabetes by re-establishing tetrahydrobiopterin levels.
Faria, AM; Lopes de Faria, JB; Lopes de Faria, JM; Papadimitriou, A; Silva, KC, 2012
)
0.38
"These preliminary results support the possibility that limited BH(4) bioavailability contributes to impaired carotid artery compliance in healthy older men."( Tetrahydrobiopterin supplementation enhances carotid artery compliance in healthy older men: a pilot study.
Black, SM; DeVan, AE; Jablonski, KL; Pierce, GL; Seals, DR; Seibert, SM; Sharma, S; Walker, AE, 2012
)
0.38
" Under conditions of low BH4 bioavailability relative to NOS or BH2, oxygen activation is "uncoupled" from L-arginine oxidation, and NOS produces superoxide (O (2) (-) ) instead of NO."( Recoupling the cardiac nitric oxide synthases: tetrahydrobiopterin synthesis and recycling.
Alkaitis, MS; Crabtree, MJ, 2012
)
0.38
" These results suggested that HDMPPA could maintain NO bioavailability through an increasing eNOS expression and preventing NO degradation by ROS."( Beneficial effects of the active principle component of Korean cabbage kimchi via increasing nitric oxide production and suppressing inflammation in the aorta of apoE knockout mice.
Choi, YH; Noh, JS; Song, YO, 2013
)
0.39
" Treatment with PPARδ ligand GW501516 (2 mg/kg/day) for 14 days significantly increased BH(4) bioavailability and improved endothelium-dependent relaxations in Tg2576 mice aortas."( Activation of PPARδ prevents endothelial dysfunction induced by overexpression of amyloid-β precursor protein.
d'Uscio, LV; Das, P; He, T; Katusic, ZS; Santhanam, AV; Younkin, SG, 2012
)
0.38
" Obtained results suggest that in vivo activation of PPARδ prevents eNOS uncoupling, restores bioavailability of NO and may help preserve endothelial function in the BH₄-deficient cerebral circulation."( PPARδ agonist GW501516 prevents uncoupling of endothelial nitric oxide synthase in cerebral microvessels of hph-1 mice.
d'Uscio, LV; He, T; Katusic, ZS; Santhanam, AV, 2012
)
0.38
" As plasma BH(4) bioavailability has been suggested as a mechanism of neural tube defect (NTD) teratogenesis, we evaluated the association between this GCH1 haplotype and the risk of NTDs."( A GCH1 haplotype and risk of neural tube defects in the National Birth Defects Prevention Study.
Canfield, MA; Chapa, C; Duhon, C; Finnell, RH; Lupo, PJ; Nousome, D; Shaw, GM; Zhu, H, 2012
)
0.38
"DSR largely reversed both macro- and microvascular endothelial dysfunction by enhancing NO and BH(4) bioavailability and reducing oxidative stress."( Dietary sodium restriction reverses vascular endothelial dysfunction in middle-aged/older adults with moderately elevated systolic blood pressure.
Chonchol, M; Gates, PE; Geolfos, CJ; Jablonski, KL; McQueen, MB; Racine, ML; Seals, DR, 2013
)
0.39
" Building our knowledge of this regulation is necessary to understand and modulate the bioavailability of nitric oxide, central to the cardiovascular complications of diabetes and other diseases."( L-arginine, tetrahydrobiopterin, nitric oxide and diabetes.
Hoang, HH; Meininger, CJ; Padgham, SV, 2013
)
0.39
"The global arginine bioavailability ratio has been proposed as a biomarker reflective of L-arginine availability, arginase activity, and citrulline cycling, as all of these processes impact eNOS activity."( L-arginine, tetrahydrobiopterin, nitric oxide and diabetes.
Hoang, HH; Meininger, CJ; Padgham, SV, 2013
)
0.39
" During limb ischemia, decreased NO bioavailability occurs secondary to increased oxidant stress, decreased L-arginine and tetrahydrobiopterin."( Tetrahydrobiopterin, L-arginine and vitamin C act synergistically to decrease oxidant stress and increase nitric oxide that increases blood flow recovery after hindlimb ischemia in the rat.
Messina, LM; Tie, G; Yan, J, 2012
)
0.38
" Furthermore, interventions that limit BH4 bioavailability may provide benefit in diseases where nitric oxide over production contributes to pathology."( The regulation of vascular tetrahydrobiopterin bioavailability.
Hussein, D; Nandi, M; Starr, A, 2013
)
0.39
" Reduced NO bioavailability may play an essential role in cardiovascular pathologies and metabolic diseases."( Arginine and nitric oxide synthase: regulatory mechanisms and cardiovascular aspects.
Cottin, Y; Guilland, JC; Lorin, J; Rochette, L; Vergely, C; Zeller, M, 2014
)
0.4
" Therefore, the pathological impairment of eNOS and nNOS functions contribute importantly to cerebrovascular dysfunction in ECM and the recovery of intrinsic functionality of NOS to increase NO bioavailability and restore vascular health represents a target for ECM treatment."( Nitric oxide synthase dysfunction contributes to impaired cerebroarteriolar reactivity in experimental cerebral malaria.
Cabrales, P; Carvalho, LJ; Frangos, JA; Hofer, A; Martins, YC; Melchior, B; Ong, PK; Orjuela-Sánchez, P; Zanini, GM, 2013
)
0.39
" Bioavailability of tetrahydrobiopterin (BH4), an essential cofactor for catecholamine synthesis, is reduced with aging."( Oral sapropterin augments reflex vasoconstriction in aged human skin through noradrenergic mechanisms.
Alexander, LM; Kenney, WL; Stanhewicz, AE, 2013
)
0.39
" Bioavailability of BH4 is a critical factor in regulating the balance between NO and superoxide production by endothelial NOS (eNOS coupling)."( A pivotal role for tryptophan 447 in enzymatic coupling of human endothelial nitric oxide synthase (eNOS): effects on tetrahydrobiopterin-dependent catalysis and eNOS dimerization.
Bailey, J; Batchelor, H; Benson, MA; Bhattacharya, S; Channon, KM; Chuaiphichai, S; Crabtree, MJ; Stuehr, DJ; Zhu, H, 2013
)
0.39
"Reduced bioavailability of nitric oxide (NO) is a key factor contributing to myocardial ischemia and reperfusion injury."( Myocardial protection by co-administration of L-arginine and tetrahydrobiopterin during ischemia and reperfusion.
Böhm, F; Channon, KM; Gonon, AT; Kiss, A; Pernow, J; Settergren, M; Sjöquist, PO; Tornvall, P; Tratsiakovich, Y; Yang, J, 2013
)
0.39
" In this review, we discuss the synthesis of BH4, its molecular mechanisms regulating eNOS coupling, the pathophysiologic roles of decreased BH4 bioavailability in cardiovascular diseases, and the potential therapeutic application of BH4 in clinics."( Tetrahydrobiopterin regulation of eNOS redox function.
Chen, AF; Chen, DD; Chen, LY; Shu, C; Xie, JB; Yang, T; Yuan, H; Zhou, S, 2014
)
0.4
" BH4 bioavailability is determined by a balance of enzymatic de novo synthesis and recycling, versus degradation in the setting of oxidative stress."( Tetrahydrobiopterin in cardiovascular health and disease.
Bendall, JK; Channon, KM; Crabtree, MJ; Douglas, G; McNeill, E, 2014
)
0.4
"Ascorbate (Asc) has been shown to increase nitric oxide (NO) bioavailability and thereby improve endothelial function in patients showing signs of endothelial dysfunction."( Does vitamin C enhance nitric oxide bioavailability in a tetrahydrobiopterin-dependent manner? In vitro, in vivo and clinical studies.
Lykkesfeldt, J; Mortensen, A, 2014
)
0.4
" Importantly, inhibition of proteasome-mediated proteolysis of the GR or overexpression of an ubiquitination-defective GR construct improved the bioavailability of BH4 and strengthened GTPCH-1 expression and eNOS activity."( Inhibition of proteasome-mediated glucocorticoid receptor degradation restores nitric oxide bioavailability in myocardial endothelial cells in vitro.
Bauersachs, J; Blecharz, KG; Burek, M; Förster, CY; Roewer, N; Thum, T; Tsikas, D; Widder, J, 2014
)
0.4
"Aging is associated with erectile dysfunction (ED), in which nitric oxide synthase (NOS) activity and NO bioavailability are reduced due to deficiencies of NOS cofactor (tetrahydrobiopterin, BH(4)) and substrate (L-arginine)."( L-arginine and tetrahydrobiopterin, but not sodium nitrite partially restored erectile dysfunction in aged rats.
Bayatli, N; Gur, S; Kaya, E; Un, O; Yilmaz, D, 2014
)
0.4
" Moreover, EPO decreased the levels of superoxide anions and increased NO bioavailability in cerebral microvessels of hph1 mice."( Erythropoietin increases bioavailability of tetrahydrobiopterin and protects cerebral microvasculature against oxidative stress induced by eNOS uncoupling.
d'Uscio, LV; Katusic, ZS; Santhanam, AV, 2014
)
0.4
" These results suggest that GFRP overexpression regulates GCH1 activity during septic shock, which in turn limits BH4 bioavailability for iNOS."( Overexpression of GTP cyclohydrolase 1 feedback regulatory protein is protective in a murine model of septic shock.
Channon, KM; Crabtree, M; Heikal, L; Kelly, PD; Leiper, JM; Nandi, M; Sand, CA; Spina, D; Starr, A, 2014
)
0.4
" The absorption rate and terminal half-life suggest flip-flop pharmacokinetic behavior where absorption is rate limiting."( A prospective population pharmacokinetic analysis of sapropterin dihydrochloride in infants and young children with phenylketonuria.
Merilainen, M; Mould, DR; Musson, DG; Qi, Y; Zhou, H, 2015
)
0.42
" Decreased nitric oxide (NO) bioavailability is a major factor contributing to SNS overactivity in CKD, since reduced neuronal NO leads to increased central SNS activity."( Tetrahydrobiopterin lowers muscle sympathetic nerve activity and improves augmentation index in patients with chronic kidney disease.
Deveaux, DD; Liao, P; Lyles, RH; Park, J; Quyyumi, AA; Sher, S, 2015
)
0.42
"Decreased bioavailability of nitric oxide (NO) is a major contributor to the pathophysiology of severe falciparum malaria."( Impaired systemic tetrahydrobiopterin bioavailability and increased oxidized biopterins in pediatric falciparum malaria: association with disease severity.
Anstey, NM; Florence, S; Granger, DL; Hyland, K; Lopansri, BK; Mukemba, J; Mwaikambo, ED; Rubach, MP; Volkheimer, AD; Weinberg, JB; Yeo, TW, 2015
)
0.42
" In African children and Asian adults with severe malaria, NO bioavailability decreases and plasma phenylalanine increases, together suggesting possible BH₄ deficiency."( Impaired systemic tetrahydrobiopterin bioavailability and increased dihydrobiopterin in adult falciparum malaria: association with disease severity, impaired microvascular function and increased endothelial activation.
Anstey, NM; Granger, DL; Hyland, K; Kenangalem, E; Lampah, DA; Price, RN; Tjitra, E; Weinberg, JB; Yeo, TW, 2015
)
0.42
"Vascular tone is controlled by the L-arginine/nitric oxide (NO) pathway, and NO bioavailability is strongly affected by hyperglycaemia-induced oxidative stress."( Insulin reverses D-glucose-increased nitric oxide and reactive oxygen species generation in human umbilical vein endothelial cells.
Aguayo, C; Avila, P; Cabrera, L; Gallardo, V; González, M; Guzmán-Gutiérrez, E; Leiva, A; Palma, C; Pardo, F; Peña, E; Rojas, S; Sáez, T; Salsoso, R; Sanhueza, C; Sobrevia, L; Villalobos, R, 2015
)
0.42
"Reduced nitric oxide bioavailability contributes to endothelial dysfunction and hypertension."( Mechanisms and consequences of endothelial nitric oxide synthase dysfunction in hypertension.
Cai, H; Li, Q; Youn, JY, 2015
)
0.42
" Because BH4 synthesis is controlled enzymatically by GTP cyclohydrolase (GTPCH), we used GTPCH-depleted mice [hyperphenylalaninemia strain (hph1)] to investigate the impact of hyperoxia on BH4 bioavailability and retinal vascular pathology in the neonate."( Hyperoxia depletes (6R)-5,6,7,8-tetrahydrobiopterin levels in the neonatal retina: implications for nitric oxide synthase function in retinopathy.
Edgar, KS; Gardiner, TA; Katusic, ZS; Matesanz, N; McDonald, DM, 2015
)
0.42
" Therefore, orally bioavailable pharmacological activators of endogenous BH4 biosynthesis hold significant therapeutic potential."( Validating the GTP-cyclohydrolase 1-feedback regulatory complex as a therapeutic target using biophysical and in vivo approaches.
Brown, PR; Channon, KM; Heikal, L; Hussein, D; McDonnell, JM; McNeill, E; Nandi, M; Starr, A; Sutton, BJ, 2015
)
0.42
"In this study, we tested the hypothesis that reduced bioavailability of tetrahydrobiopterin (BH4) is a major mechanism responsible for pathogenesis of endothelial dysfunction in cerebral microvessels of transgenic mice expressing the Swedish double mutation of human amyloid precursor protein (APP) (Tg2576 mice)."( Uncoupling of endothelial nitric oxide synthase in cerebral vasculature of Tg2576 mice.
d'Uscio, LV; Das, P; He, T; Katusic, ZS; Santhanam, AV; Younkin, SG, 2015
)
0.42
" These results suggest that sepiapterin prevents concentric LVH and dilatory remodeling after TAC primarily by increasing the bioavailability of NO."( Sepiapterin prevents left ventricular hypertrophy and dilatory remodeling induced by pressure overload in rats.
Fujita, M; Iwasaka, T; Otani, H; Shimazu, T; Shiojima, I; Yoshioka, K, 2015
)
0.42
" We hypothesized that increasing the capacity to recycle BH4 from BH2 would improve NO bioavailability as well as pulmonary vascular remodeling (PVR) and right ventricular hypertrophy (RVH) as indicators of pulmonary hypertension (PH) under hypoxic conditions."( Folic Acid Promotes Recycling of Tetrahydrobiopterin and Protects Against Hypoxia-Induced Pulmonary Hypertension by Recoupling Endothelial Nitric Oxide Synthase.
Bertram, K; Chalupsky, K; Görlach, A; Kanchev, I; Kračun, D, 2015
)
0.42
" There was no difference in eNOS protein expression between the microvessels of the three brain regions; however, bioavailability of tetrahydrobiopterin (BH4), an essential cofactor for eNOS activity, was significantly reduced in microvessels from the hippocampus and cortex as compared to the cerebellum."( Regional Heterogeneity of Cerebral Microvessels and Brain Susceptibility to Oxidative Stress.
Austin, SA; d'Uscio, LV; Katusic, ZS; Santhanam, AV, 2015
)
0.42
" These studies, which are the focus of this review, suggest that folic acid and its active metabolite 5-methyl tetrahydrofolate improve nitric oxide (NO) bioavailability by increasing endothelial NO synthase coupling and NO production as well as by directly scavenging superoxide radicals."( Role of folic acid in nitric oxide bioavailability and vascular endothelial function.
Kenney, WL; Stanhewicz, AE, 2017
)
0.46
" The flow-mediated dilation (FMD) test is a noninvasive assessment of NO bioavailability in humans, and tetrahydrobiopterin (BH4) is essential for NO synthesis."( BH4 improves postprandial endothelial function after a high-fat meal in men and postmenopausal women.
Bass, L; Davison, GW; Harris, RA; Pollock, JS; Seigler, N; Shah, Y; Thomas, J, 2017
)
0.46
" The present study investigated whether or not Rap1 deletion affects oxidative stress and nitric oxide (NO) bioavailability in the vascular wall, thus modulating endothelial function."( Deletion of Rap1 disrupts redox balance and impairs endothelium-dependent relaxations.
Cai, Y; Chen, X; Tang, EHC; Vanhoutte, PM; Wong, KHK; Ying, F, 2018
)
0.48
"Homeostasis around vascular endothelium is a function of the equilibrium between the bioavailability of nitric oxide (NO) and oxidizing reactive oxygen species (ROS)."( Endothelial dysfunction, endothelial nitric oxide bioavailability, tetrahydrobiopterin, and 5-methyltetrahydrofolate in cardiovascular disease. Where are we with therapy?
Ng, GA; Ng, LL; Yuyun, MF, 2018
)
0.48
" Our findings revealed that ExT rectified decreased PIN and GCH1 expression and increased dimer/monomer ratio of nNOS in the PVN, which may lead to increase NO• bioavailability resulting in amelioration of activated sympathetic drive during CHF."( Exercise training augments neuronal nitric oxide synthase dimerization in the paraventricular nucleus of rats with chronic heart failure.
Katsurada, K; Liu, X; Llewellyn, TL; Patel, KP; Sharma, NM, 2019
)
0.51
"The ATP-binding cassette transporter P-glycoprotein (P-gp) is known to limit both brain penetration and oral bioavailability of many chemotherapy drugs."( A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
Ambudkar, SV; Brimacombe, KR; Chen, L; Gottesman, MM; Guha, R; Hall, MD; Klumpp-Thomas, C; Lee, OW; Lee, TD; Lusvarghi, S; Robey, RW; Shen, M; Tebase, BG, 2019
)
0.51
"Diabetes is associated with an increase in the production of free radicals, reduction of tetrahydrobiopterin (BH4, THB) levels and reduced bioavailability of nitric oxide (NO) in the vascular walls."( Curcumin nanoparticles have potential antioxidant effect and restore tetrahydrobiopterin levels in experimental diabetes.
Abu-Taweel, GM; Ahmed, EI; Allam, AA; Attia, MF; El-Naggar, ME; Galal, HM; Hussein, J; Mekawi, EM, 2020
)
0.56
"The ATP-binding cassette transporter P-glycoprotein (P-gp) is known to limit both brain penetration and oral bioavailability of many chemotherapy drugs."( A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
Ambudkar, SV; Brimacombe, KR; Chen, L; Gottesman, MM; Guha, R; Hall, MD; Klumpp-Thomas, C; Lee, OW; Lee, TD; Lusvarghi, S; Robey, RW; Shen, M; Tebase, BG, 2019
)
0.51

Dosage Studied

The effect of weight on sapropterin pharmacokinetics was significant and exposure was comparable across age groups. We propose an initial 48-h loading test, followed by a 1-4-week trial of sa Propterin.

ExcerptRelevanceReference
" The results suggest, the BH4 in the dosage used, is not effective in the treatment of Parkinson's disease."( Tetrahydrobiopterin and Parkinson's disease.
Dissing, IC; Gerdes, AM; Güttler, F; Lou, H; Lykkelund, C; Pakkenberg, H; Rasmussen, V, 1989
)
0.28
" A dose-response study indicated that as low as 79 nM final BH4 concentration stimulated NOS activity half-maximally, and 1 microM BH4 resulted in an almost maximal effect."( Activation and dimerization of type III nitric oxide synthase by submicromolar concentrations of tetrahydrobiopterin in microsomal preparations from human primordial placenta.
Kukor, Z; Sahin-Tóth, M; Tóth, M,
)
0.13
" Epidermal suction blister tissues were taken before (0 h) and after (24 and 72 h) UVB exposure with a standardized dosage [1 minimal erythema dose (MED)]."( Pteridines in the control of pigmentation.
Beazley, W; Bünz, A; Körner, C; Schallreuter, KU; Schulz-Douglas, V, 1997
)
0.3
" Isometric dose-response curves were constructed in precontracted rings in the presence and absence of tetrahydrobiopterin (0."( Tetrahydrobiopterin improves endothelial function in human saphenous veins.
Anderson, TJ; Dumont, AS; Kieser, TM; Lovren, F; Maitland, A; Mather, KJ; Triggle, CR; Verma, S, 2000
)
0.31
" Dose-response curves were investigated in response to the endothelium-dependent agonists histamine, serotonin, and acetylcholine (for pigs, substance P) and to the endothelium-independent agonist sodium nitroprusside (SNP) under control conditions and before and after incubation of the vessels with sepiapterin (substrate for BH4 synthesis)."( Endothelial dysfunction of coronary resistance arteries is improved by tetrahydrobiopterin in atherosclerosis.
Amann, K; Bleeke, T; Kübler, W; Tiefenbacher, CP; Vahl, C; Vogt, A, 2000
)
0.31
"In control subjects, tetrahydrobiopterin had no effect on the dose-response curves to acetylcholine and sodium nitroprusside."( Tetrahydrobiopterin improves endothelium-dependent vasodilation by increasing nitric oxide activity in patients with Type II diabetes mellitus.
Albers, S; Heitzer, T; Krohn, K; Meinertz, T, 2000
)
0.31
" A maintenance dosage of only 100 mg/day has resulted in significant improvement of depression and panic attacks, with discontinuation of psychotropic medication."( Mental illness in mild PKU responds to biopterin.
Blau, N; Guttler, F; Koch, R, 2002
)
0.31
" Dose-response studies were obtained during intra-arterial infusion of serotonin to elicit endothelium-dependent, NO-specific vasodilation and during sodium nitroprusside (SNP) infusion to elicit endothelium-independent vasodilation."( Tetrahydrobiopterin restores endothelial dysfunction induced by an oral glucose challenge in healthy subjects.
Dominguez, H; Hermann, T; Ihlemann, N; Køber, L; Perner, A; Rask-Madsen, C; Torp-Pedersen, C, 2003
)
0.32
"0 nmol/L biopterin at a dosage of 10mg/kg), and area under the curve (AUC=1708-1958 nmol(*)h/L up to T=10h) were estimated."( Plasma tetrahydrobiopterin and its pharmacokinetic following oral administration.
Ballhausen, D; Blau, N; Fiege, B; Goriounov, D; Kierat, L; Leimbacher, W; Schircks, B; Thöny, B, 2004
)
0.32
" CRR correlated inversely with pretreatment phenylalanine levels, indicating the gene dosage effects on PKU."( In vivo studies of phenylalanine hydroxylase by phenylalanine breath test: diagnosis of tetrahydrobiopterin-responsive phenylalanine hydroxylase deficiency.
Hase, Y; Inui, K; Kajiwara, M; Kawajiri, M; Nishi, Y; Okano, Y; Sakai, N; Takatori, K; Tanaka, Y; Yamano, T, 2004
)
0.32
" Organ chamber-based isometric tension studies revealed that aortas from GK rats had impaired relaxation responses to acetylcholine whereas a rightward shift in the dose-response curve was noticed in the endothelium-independent vasorelaxation exerted by the NO donor sodium nitroprusside."( Nitric oxide dynamics and endothelial dysfunction in type II model of genetic diabetes.
Al-Mulla, F; Al-Saleh, E; Bitar, MS; Dhaunsi, GS; Mustafa, S; Wahid, S, 2005
)
0.33
" We report on the long-term treatment of eight patients with mild and classical phenylketonuria (blood Phe levels maximum blood Phe levels between 771 and 1500 micromol/L) using BH4 at a dosage of 8-12 mg/kg BW per day."( Long-term treatment of patients with mild and classical phenylketonuria by tetrahydrobiopterin.
Blau, N; Frauendienst-Egger, G; Korall, H; Scheible, D; Trefz, FK, 2005
)
0.33
" The outcome of the loading test depends on the genotype, dosage of BH(4), and BH(4) pharmacokinetics."( Pharmacokinetics of orally administered tetrahydrobiopterin in patients with phenylalanine hydroxylase deficiency.
Blau, N; Demirkol, M; Fiege, B; Fiori, L; Gärtner, KH; Giovannini, M; Ozen, I; Thöny, B; Zurflüh, MR, 2006
)
0.33
" Here, we present a case of PTPS deficiency which showed a more significant correlation of dosage of L-Dopa/carbidopa with serum prolactin levels than with CSF HVA levels."( A case of 6-pyruvoyl-tetrahydropterin synthase deficiency demonstrates a more significant correlation of L-Dopa dosage with serum prolactin levels than CSF homovanillic acid levels.
Kanazawa, M; Kitani, Y; Kohno, Y; Ogawa, A; Shintaku, H; Takayanagi, M, 2008
)
0.35
" Time of diagnosis, dosage of BH4 and neurotransmitter precursors, folinic acid substitution, and levels of 5-hydroxyindoleacetic acid (5HIAA) and homovanillic acid (HVA) in cerebrospinal fluid (CSF) are essential parameters in the follow-up of patients."( Outcome and long-term follow-up of 36 patients with tetrahydrobiopterin deficiency.
Ballhausen, D; Baumgartner, MR; Blau, N; Fiori, L; Giovannini, M; Hoffmann, GF; Ibel, H; Jäggi, L; Ponzone, A; Porta, F; Santer, R; Schuler, A; Wendel, U; Zurflüh, MR, 2008
)
0.35
" However, the dose-response curves of DAHP for the suppression of the VCAM-1 level and that of BH(4) level were markedly different."( 2,4-Diamino-6-hydroxypyrimidine (DAHP) suppresses cytokine-induced VCAM-1 expression on the cell surface of human umbilical vein endothelial cells in a BH(4)-independent manner.
Ikemoto, K; Itoh, M; Kondo, K; Matsumoto, T; Nomura, T; Ohtsuki, M; Sumi-Ichinose, C; Tada, S; Udagawa, Y,
)
0.13
" Correcting the insufficiency by dosing folate along with the SSRI results in a significantly better antidepressant response."( The methylation, neurotransmitter, and antioxidant connections between folate and depression.
Miller, AL, 2008
)
0.35
"These findings, taken together with the observed therapeutic effect, support bodyweight-based, once-daily dosing of sapropterin 5-20 mg/kg/day."( Pharmacokinetics of sapropterin in patients with phenylketonuria.
Clarke, L; Dorenbaum, A; Feillet, F; Foehr, E; Giovannini, M; Green, B; Harmatz, P; Lipson, M; Meli, C; Morris, AA; Mould, DR, 2008
)
0.35
" We propose an initial 48-h loading test, followed by a 1-4-week trial of sapropterin and subsequent adjustment of the sapropterin dosage and dietary Phe intake to optimize blood Phe control."( Optimizing the use of sapropterin (BH(4)) in the management of phenylketonuria.
Bélanger-Quintana, A; Blau, N; Demirkol, M; Feillet, F; Giovannini, M; MacDonald, A; Trefz, FK; van Spronsen, FJ, 2009
)
0.35
" Monitoring of serum prolactin representing dopamine sufficiency is used for optimizing the dosage of L-dopa."( Novel mutation affecting the pterin-binding site of PTS gene and review of PTS mutations in Thai patients with 6-pyruvoyltetrahydropterin synthase deficiency.
Blau, N; Hsiao, KJ; Kuptanon, C; Liammongkolkul, S; Liu, TT; Ratanarak, P; Vatanavicharn, N; Wasant, P, 2009
)
0.35
" The 3 dosing periods were separated by a washout period of at least 7 days."( Relative bioavailability of sapropterin from intact and dissolved sapropterin dihydrochloride tablets and the effects of food: a randomized, open-label, crossover study in healthy adults.
Bieberdorf, FA; Dorenbaum, A; Foehr, ED; Hornfeldt, CS; Kim, SS; Kramer, WG; Musson, DG, 2010
)
0.36
" Continuing education and support will be required thereafter, with further adjustment of diet and sapropterin dosage as a young patient grows."( Adjusting diet with sapropterin in phenylketonuria: what factors should be considered?
Ahring, K; Bélanger-Quintana, A; Dokoupil, K; Gokmen-Ozel, H; Lammardo, AM; MacDonald, A; Motzfeldt, K; Robert, M; Rocha, JC; van Rijn, M, 2011
)
0.37
" However, recent studies suggest the effective BH4 dosing may be narrower than previously thought, potentially due to its oxidation upon oral consumption."( Bi-modal dose-dependent cardiac response to tetrahydrobiopterin in pressure-overload induced hypertrophy and heart failure.
Alp, NJ; Channon, KM; Kass, DA; Ketner, EA; Moens, AL; O'Neill, CA; Schmidt, TS; Takimoto, E; Wolin, MS, 2011
)
0.37
" However, optimal dosage of the neurotransmitters for PTPS deficiency patients is difficult to be determined."( Disorders of BH4 metabolism and the treatment of patients with 6-pyruvoyl-tetrahydropterin synthase deficiency in Taiwan.
Niu, DM, 2011
)
0.37
" Consequently, different L-dopa-sparing strategies have been successively introduced, with partial reduction of L-dopa dosage and amelioration of the clinical outcome."( Dopamine agonists in dihydropteridine reductase deficiency.
Concolino, D; Mussa, A; Ponzone, A; Porta, F; Spada, M, 2012
)
0.38
" Cerebrospinal fluid should be examined to determine the appropriate dosage of supplement drugs."( Early replacement therapy in a first Japanese case with autosomal recessive guanosine triphosphate cyclohydrolase I deficiency with a novel point mutation.
Endo, W; Hino-Fukuyo, N; Kobayashi, T; Kure, S; Nakayama, T; Sakamoto, O; Sato, H; Shintaku, H; Uematsu, M, 2014
)
0.4
" Factors that can affect phenylalanine fluctuations include age, diet, timing and dosing of protein substitute and energy intake, dietary adherence, phenylalanine hydroxylase genotype, changes in dietary phenylalanine intake and protein metabolism, illness, and growth rate."( Fluctuations in phenylalanine concentrations in phenylketonuria: a review of possible relationships with outcomes.
Bélanger-Quintana, A; Bettiol, E; Blau, N; Burlina, A; Cleary, M; Feillet, F; Gasteyger, C; Giżewska, M; MacDonald, A; Muntau, AC; Trefz, F; van Spronsen, FJ, 2013
)
0.39
"The effect of weight on sapropterin pharmacokinetics was significant and exposure was comparable across age groups; thus, weight-based dosing is appropriate."( A prospective population pharmacokinetic analysis of sapropterin dihydrochloride in infants and young children with phenylketonuria.
Merilainen, M; Mould, DR; Musson, DG; Qi, Y; Zhou, H, 2015
)
0.42
" The mean percentage change in Phe blood levels after the 8-day response test period compared to Phe levels prior to dosing was 14."( [Open, non-comparative phase III clinical study to evaluate the efficacy and safety of sapropterin in patients with phenylketonuria and hyperphenylalaninemia].
Akhmadeeva, ÉN; Alimova, IL; Bazhenova, IuL; Borovik, TÉ; Bushueva, TV; Filimonova, MN; Garifullina, ÉR; Kostiakova, EA; Kovtun, OP; Kuzenkova, LM; Mardanova, AK; Minaĭcheva, LI; Nazarenko, LP; Pichkur, NA; Rozenson, OL; Saliukova, OA; Samonenko, NV; Seitova, GN; Shkurko, TA; Sivokha, VM, 2014
)
0.4
" Natural protein intake and protein substitute dosing was adjusted during the period without BH4 in order to keep DBS phenylalanine levels within target range."( Effect of BH4 on blood phenylalanine and tyrosine variations in patients with phenylketonuria.
Burgerhof, J; de Vries, MC; Evers, R; Heiner-Fokkema, MR; Janssen, M; van Dam, E; van Spronsen, FJ; van Wegberg, A, 2021
)
0.62
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Roles (4)

RoleDescription
coenzymeA low-molecular-weight, non-protein organic compound participating in enzymatic reactions as dissociable acceptor or donor of chemical groups or electrons.
diagnostic agentA substance administered to aid diagnosis of a disease.
human metaboliteAny mammalian metabolite produced during a metabolic reaction in humans (Homo sapiens).
cofactorAn organic molecule or ion (usually a metal ion) that is required by an enzyme for its activity. It may be attached either loosely (coenzyme) or tightly (prosthetic group).
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Drug Classes (2)

ClassDescription
5,6,7,8-tetrahydrobiopterin
aromatic ketoneA ketone in which the carbonyl group is attached to an aromatic ring.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Pathways (13)

PathwayProteinsCompounds
(S)-reticuline biosynthesis I030
serotonin and melatonin biosynthesis014
rosmarinic acid biosynthesis II023
superpathway of betalain biosynthesis241
superpathway of rosmarinic acid biosynthesis140
betalamic acid biosynthesis114
Folate metabolism ( Folate metabolism )2039
Tryptophan degradation ( Tryptophan degradation )6454
Tyrosine metabolism ( Tyrosine metabolism )2841
Catecholamine synthesis012
Folate metabolism156
Dopamine metabolism032
Tyrosine metabolism and related disorders724

Protein Targets (55)

Potency Measurements

ProteinTaxonomyMeasurementAverage (µ)Min (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Spike glycoproteinSevere acute respiratory syndrome-related coronavirusPotency31.62280.009610.525035.4813AID1479145
Chain A, MAJOR APURINIC/APYRIMIDINIC ENDONUCLEASEHomo sapiens (human)Potency0.89130.003245.467312,589.2998AID2517
Chain A, TYROSYL-DNA PHOSPHODIESTERASEHomo sapiens (human)Potency0.10000.004023.8416100.0000AID485290
Chain A, HADH2 proteinHomo sapiens (human)Potency5.79250.025120.237639.8107AID886; AID893
Chain B, HADH2 proteinHomo sapiens (human)Potency5.79250.025120.237639.8107AID886; AID893
Chain A, ATP-DEPENDENT DNA HELICASE Q1Homo sapiens (human)Potency1.12200.125919.1169125.8920AID2549
LuciferasePhotinus pyralis (common eastern firefly)Potency36.72670.007215.758889.3584AID1224835; AID624030
interleukin 8Homo sapiens (human)Potency47.30790.047349.480674.9780AID651758
acetylcholinesteraseHomo sapiens (human)Potency8.93580.002541.796015,848.9004AID1347399
15-lipoxygenase, partialHomo sapiens (human)Potency3.98110.012610.691788.5700AID887
RAR-related orphan receptor gammaMus musculus (house mouse)Potency53.13430.006038.004119,952.5996AID1159521; AID1159523
SMAD family member 2Homo sapiens (human)Potency24.54120.173734.304761.8120AID1346859
SMAD family member 3Homo sapiens (human)Potency24.54120.173734.304761.8120AID1346859
TDP1 proteinHomo sapiens (human)Potency32.89330.000811.382244.6684AID686978; AID686979
GLI family zinc finger 3Homo sapiens (human)Potency27.30600.000714.592883.7951AID1259369
AR proteinHomo sapiens (human)Potency46.91810.000221.22318,912.5098AID743035; AID743036
aldehyde dehydrogenase 1 family, member A1Homo sapiens (human)Potency39.81070.011212.4002100.0000AID1030
thyroid stimulating hormone receptorHomo sapiens (human)Potency39.81070.001318.074339.8107AID926; AID938
estrogen receptor 2 (ER beta)Homo sapiens (human)Potency51.52020.000657.913322,387.1992AID1259377; AID1259378
hypothetical protein, conservedTrypanosoma bruceiPotency89.12510.223911.245135.4813AID624173
nuclear receptor subfamily 1, group I, member 3Homo sapiens (human)Potency13.68540.001022.650876.6163AID1224838
progesterone receptorHomo sapiens (human)Potency43.96040.000417.946075.1148AID1346784; AID1346795
cytochrome P450 family 3 subfamily A polypeptide 4Homo sapiens (human)Potency0.89360.01237.983543.2770AID1645841
glucocorticoid receptor [Homo sapiens]Homo sapiens (human)Potency12.58930.000214.376460.0339AID588533
retinoic acid nuclear receptor alpha variant 1Homo sapiens (human)Potency72.77420.003041.611522,387.1992AID1159552; AID1159553
retinoid X nuclear receptor alphaHomo sapiens (human)Potency38.89520.000817.505159.3239AID1159527
estrogen-related nuclear receptor alphaHomo sapiens (human)Potency37.41160.001530.607315,848.9004AID1224841; AID1224842; AID1224848; AID1224849; AID1259401; AID1259403
farnesoid X nuclear receptorHomo sapiens (human)Potency2.31400.375827.485161.6524AID588527; AID743217; AID743220
pregnane X nuclear receptorHomo sapiens (human)Potency76.95880.005428.02631,258.9301AID1346982
estrogen nuclear receptor alphaHomo sapiens (human)Potency26.46940.000229.305416,493.5996AID743069; AID743075; AID743079
GVesicular stomatitis virusPotency22.44580.01238.964839.8107AID1645842
cytochrome P450 2D6Homo sapiens (human)Potency28.25760.00108.379861.1304AID1645840
peroxisome proliferator-activated receptor deltaHomo sapiens (human)Potency31.69110.001024.504861.6448AID743212; AID743215
peroxisome proliferator activated receptor gammaHomo sapiens (human)Potency0.00780.001019.414170.9645AID743191
vitamin D (1,25- dihydroxyvitamin D3) receptorHomo sapiens (human)Potency2.24380.023723.228263.5986AID743222; AID743223
aryl hydrocarbon receptorHomo sapiens (human)Potency33.51890.000723.06741,258.9301AID743085; AID743122
thyroid stimulating hormone receptorHomo sapiens (human)Potency61.13060.001628.015177.1139AID1259385
activating transcription factor 6Homo sapiens (human)Potency15.48450.143427.612159.8106AID1159516
nuclear factor of kappa light polypeptide gene enhancer in B-cells 1 (p105), isoform CRA_aHomo sapiens (human)Potency9.771219.739145.978464.9432AID1159509
v-jun sarcoma virus 17 oncogene homolog (avian)Homo sapiens (human)Potency21.87240.057821.109761.2679AID1159526
Histone H2A.xCricetulus griseus (Chinese hamster)Potency68.56770.039147.5451146.8240AID1224845; AID1224896
15-hydroxyprostaglandin dehydrogenase [NAD(+)] isoform 1Homo sapiens (human)Potency6.30960.001815.663839.8107AID894
runt-related transcription factor 1 isoform AML1bHomo sapiens (human)Potency10.15790.02007.985839.8107AID504374; AID504375
thyroid hormone receptor beta isoform 2Rattus norvegicus (Norway rat)Potency60.69380.000323.4451159.6830AID743065; AID743067
heat shock protein beta-1Homo sapiens (human)Potency10.18570.042027.378961.6448AID743210; AID743228
core-binding factor subunit beta isoform 2Homo sapiens (human)Potency10.15790.02007.985839.8107AID504374; AID504375
nuclear factor erythroid 2-related factor 2 isoform 1Homo sapiens (human)Potency50.59540.000627.21521,122.0200AID651741; AID743202
Polyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)Potency19.95260.316212.765731.6228AID881
Interferon betaHomo sapiens (human)Potency22.44580.00339.158239.8107AID1645842
HLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)Potency22.44580.01238.964839.8107AID1645842
Cellular tumor antigen p53Homo sapiens (human)Potency68.58960.002319.595674.0614AID651631
Histamine H2 receptorCavia porcellus (domestic guinea pig)Potency19.95260.00638.235039.8107AID881
Inositol hexakisphosphate kinase 1Homo sapiens (human)Potency22.44580.01238.964839.8107AID1645842
cytochrome P450 2C9, partialHomo sapiens (human)Potency22.44580.01238.964839.8107AID1645842
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Activation Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Nitric oxide synthase, brainHomo sapiens (human)Kd1.12001.12001.12001.1200AID320097
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (220)

Processvia Protein(s)Taxonomy
response to hypoxiaNitric oxide synthase, brainHomo sapiens (human)
regulation of sodium ion transportNitric oxide synthase, brainHomo sapiens (human)
arginine catabolic processNitric oxide synthase, brainHomo sapiens (human)
nitric oxide biosynthetic processNitric oxide synthase, brainHomo sapiens (human)
striated muscle contractionNitric oxide synthase, brainHomo sapiens (human)
myoblast fusionNitric oxide synthase, brainHomo sapiens (human)
response to heatNitric oxide synthase, brainHomo sapiens (human)
negative regulation of calcium ion transport into cytosolNitric oxide synthase, brainHomo sapiens (human)
regulation of cardiac muscle contraction by calcium ion signalingNitric oxide synthase, brainHomo sapiens (human)
peptidyl-cysteine S-nitrosylationNitric oxide synthase, brainHomo sapiens (human)
positive regulation of peptidyl-serine phosphorylationNitric oxide synthase, brainHomo sapiens (human)
multicellular organismal response to stressNitric oxide synthase, brainHomo sapiens (human)
xenobiotic catabolic processNitric oxide synthase, brainHomo sapiens (human)
vasodilationNitric oxide synthase, brainHomo sapiens (human)
negative regulation of potassium ion transportNitric oxide synthase, brainHomo sapiens (human)
cell redox homeostasisNitric oxide synthase, brainHomo sapiens (human)
positive regulation of DNA-templated transcriptionNitric oxide synthase, brainHomo sapiens (human)
positive regulation of transcription by RNA polymerase IINitric oxide synthase, brainHomo sapiens (human)
negative regulation of hydrolase activityNitric oxide synthase, brainHomo sapiens (human)
negative regulation of serotonin uptakeNitric oxide synthase, brainHomo sapiens (human)
negative regulation of calcium ion transportNitric oxide synthase, brainHomo sapiens (human)
regulation of cardiac muscle contractionNitric oxide synthase, brainHomo sapiens (human)
regulation of ryanodine-sensitive calcium-release channel activityNitric oxide synthase, brainHomo sapiens (human)
cellular response to growth factor stimulusNitric oxide synthase, brainHomo sapiens (human)
positive regulation of the force of heart contractionNitric oxide synthase, brainHomo sapiens (human)
positive regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathwayNitric oxide synthase, brainHomo sapiens (human)
positive regulation of sodium ion transmembrane transportNitric oxide synthase, brainHomo sapiens (human)
regulation of calcium ion transmembrane transport via high voltage-gated calcium channelNitric oxide synthase, brainHomo sapiens (human)
positive regulation of membrane repolarization during ventricular cardiac muscle cell action potentialNitric oxide synthase, brainHomo sapiens (human)
positive regulation of guanylate cyclase activityNitric oxide synthase, brainHomo sapiens (human)
nitric oxide mediated signal transductionNitric oxide synthase, brainHomo sapiens (human)
response to hormoneNitric oxide synthase, brainHomo sapiens (human)
negative regulation of blood pressureNitric oxide synthase, brainHomo sapiens (human)
response to lipopolysaccharideNitric oxide synthase, brainHomo sapiens (human)
lipid metabolic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
phospholipid metabolic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
apoptotic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
negative regulation of cell population proliferationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
positive regulation of macrophage derived foam cell differentiationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
arachidonic acid metabolic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
negative regulation of cell migrationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
prostate gland developmentPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
regulation of epithelial cell differentiationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
positive regulation of chemokine productionPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
positive regulation of peroxisome proliferator activated receptor signaling pathwayPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
positive regulation of keratinocyte differentiationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
negative regulation of cell cyclePolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
negative regulation of growthPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
hepoxilin biosynthetic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
endocannabinoid signaling pathwayPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
cannabinoid biosynthetic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
lipoxin A4 biosynthetic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
linoleic acid metabolic processPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
lipid oxidationPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
lipoxygenase pathwayPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
cell surface receptor signaling pathway via JAK-STATInterferon betaHomo sapiens (human)
response to exogenous dsRNAInterferon betaHomo sapiens (human)
B cell activation involved in immune responseInterferon betaHomo sapiens (human)
cell surface receptor signaling pathwayInterferon betaHomo sapiens (human)
cell surface receptor signaling pathway via JAK-STATInterferon betaHomo sapiens (human)
response to virusInterferon betaHomo sapiens (human)
positive regulation of autophagyInterferon betaHomo sapiens (human)
cytokine-mediated signaling pathwayInterferon betaHomo sapiens (human)
natural killer cell activationInterferon betaHomo sapiens (human)
positive regulation of peptidyl-serine phosphorylation of STAT proteinInterferon betaHomo sapiens (human)
cellular response to interferon-betaInterferon betaHomo sapiens (human)
B cell proliferationInterferon betaHomo sapiens (human)
negative regulation of viral genome replicationInterferon betaHomo sapiens (human)
innate immune responseInterferon betaHomo sapiens (human)
positive regulation of innate immune responseInterferon betaHomo sapiens (human)
regulation of MHC class I biosynthetic processInterferon betaHomo sapiens (human)
negative regulation of T cell differentiationInterferon betaHomo sapiens (human)
positive regulation of transcription by RNA polymerase IIInterferon betaHomo sapiens (human)
defense response to virusInterferon betaHomo sapiens (human)
type I interferon-mediated signaling pathwayInterferon betaHomo sapiens (human)
neuron cellular homeostasisInterferon betaHomo sapiens (human)
cellular response to exogenous dsRNAInterferon betaHomo sapiens (human)
cellular response to virusInterferon betaHomo sapiens (human)
negative regulation of Lewy body formationInterferon betaHomo sapiens (human)
negative regulation of T-helper 2 cell cytokine productionInterferon betaHomo sapiens (human)
positive regulation of apoptotic signaling pathwayInterferon betaHomo sapiens (human)
response to exogenous dsRNAInterferon betaHomo sapiens (human)
B cell differentiationInterferon betaHomo sapiens (human)
natural killer cell activation involved in immune responseInterferon betaHomo sapiens (human)
adaptive immune responseInterferon betaHomo sapiens (human)
T cell activation involved in immune responseInterferon betaHomo sapiens (human)
humoral immune responseInterferon betaHomo sapiens (human)
positive regulation of T cell mediated cytotoxicityHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
adaptive immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independentHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of T cell anergyHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
defense responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
detection of bacteriumHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of interleukin-12 productionHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of interleukin-6 productionHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protection from natural killer cell mediated cytotoxicityHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
innate immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of dendritic cell differentiationHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
antigen processing and presentation of endogenous peptide antigen via MHC class IbHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
negative regulation of cell population proliferationCellular tumor antigen p53Homo sapiens (human)
regulation of cell cycleCellular tumor antigen p53Homo sapiens (human)
regulation of cell cycle G2/M phase transitionCellular tumor antigen p53Homo sapiens (human)
DNA damage responseCellular tumor antigen p53Homo sapiens (human)
ER overload responseCellular tumor antigen p53Homo sapiens (human)
cellular response to glucose starvationCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
regulation of apoptotic processCellular tumor antigen p53Homo sapiens (human)
positive regulation of transcription by RNA polymerase IICellular tumor antigen p53Homo sapiens (human)
positive regulation of miRNA transcriptionCellular tumor antigen p53Homo sapiens (human)
negative regulation of transcription by RNA polymerase IICellular tumor antigen p53Homo sapiens (human)
mitophagyCellular tumor antigen p53Homo sapiens (human)
in utero embryonic developmentCellular tumor antigen p53Homo sapiens (human)
somitogenesisCellular tumor antigen p53Homo sapiens (human)
release of cytochrome c from mitochondriaCellular tumor antigen p53Homo sapiens (human)
hematopoietic progenitor cell differentiationCellular tumor antigen p53Homo sapiens (human)
T cell proliferation involved in immune responseCellular tumor antigen p53Homo sapiens (human)
B cell lineage commitmentCellular tumor antigen p53Homo sapiens (human)
T cell lineage commitmentCellular tumor antigen p53Homo sapiens (human)
response to ischemiaCellular tumor antigen p53Homo sapiens (human)
nucleotide-excision repairCellular tumor antigen p53Homo sapiens (human)
double-strand break repairCellular tumor antigen p53Homo sapiens (human)
regulation of DNA-templated transcriptionCellular tumor antigen p53Homo sapiens (human)
regulation of transcription by RNA polymerase IICellular tumor antigen p53Homo sapiens (human)
protein import into nucleusCellular tumor antigen p53Homo sapiens (human)
autophagyCellular tumor antigen p53Homo sapiens (human)
DNA damage responseCellular tumor antigen p53Homo sapiens (human)
DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrestCellular tumor antigen p53Homo sapiens (human)
DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediatorCellular tumor antigen p53Homo sapiens (human)
transforming growth factor beta receptor signaling pathwayCellular tumor antigen p53Homo sapiens (human)
Ras protein signal transductionCellular tumor antigen p53Homo sapiens (human)
gastrulationCellular tumor antigen p53Homo sapiens (human)
neuroblast proliferationCellular tumor antigen p53Homo sapiens (human)
negative regulation of neuroblast proliferationCellular tumor antigen p53Homo sapiens (human)
protein localizationCellular tumor antigen p53Homo sapiens (human)
negative regulation of DNA replicationCellular tumor antigen p53Homo sapiens (human)
negative regulation of cell population proliferationCellular tumor antigen p53Homo sapiens (human)
determination of adult lifespanCellular tumor antigen p53Homo sapiens (human)
mRNA transcriptionCellular tumor antigen p53Homo sapiens (human)
rRNA transcriptionCellular tumor antigen p53Homo sapiens (human)
response to salt stressCellular tumor antigen p53Homo sapiens (human)
response to inorganic substanceCellular tumor antigen p53Homo sapiens (human)
response to X-rayCellular tumor antigen p53Homo sapiens (human)
response to gamma radiationCellular tumor antigen p53Homo sapiens (human)
positive regulation of gene expressionCellular tumor antigen p53Homo sapiens (human)
cardiac muscle cell apoptotic processCellular tumor antigen p53Homo sapiens (human)
positive regulation of cardiac muscle cell apoptotic processCellular tumor antigen p53Homo sapiens (human)
glial cell proliferationCellular tumor antigen p53Homo sapiens (human)
viral processCellular tumor antigen p53Homo sapiens (human)
glucose catabolic process to lactate via pyruvateCellular tumor antigen p53Homo sapiens (human)
cerebellum developmentCellular tumor antigen p53Homo sapiens (human)
negative regulation of cell growthCellular tumor antigen p53Homo sapiens (human)
DNA damage response, signal transduction by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
negative regulation of transforming growth factor beta receptor signaling pathwayCellular tumor antigen p53Homo sapiens (human)
mitotic G1 DNA damage checkpoint signalingCellular tumor antigen p53Homo sapiens (human)
negative regulation of telomere maintenance via telomeraseCellular tumor antigen p53Homo sapiens (human)
T cell differentiation in thymusCellular tumor antigen p53Homo sapiens (human)
tumor necrosis factor-mediated signaling pathwayCellular tumor antigen p53Homo sapiens (human)
regulation of tissue remodelingCellular tumor antigen p53Homo sapiens (human)
cellular response to UVCellular tumor antigen p53Homo sapiens (human)
multicellular organism growthCellular tumor antigen p53Homo sapiens (human)
positive regulation of mitochondrial membrane permeabilityCellular tumor antigen p53Homo sapiens (human)
cellular response to glucose starvationCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
positive regulation of apoptotic processCellular tumor antigen p53Homo sapiens (human)
negative regulation of apoptotic processCellular tumor antigen p53Homo sapiens (human)
entrainment of circadian clock by photoperiodCellular tumor antigen p53Homo sapiens (human)
mitochondrial DNA repairCellular tumor antigen p53Homo sapiens (human)
regulation of DNA damage response, signal transduction by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
positive regulation of neuron apoptotic processCellular tumor antigen p53Homo sapiens (human)
transcription initiation-coupled chromatin remodelingCellular tumor antigen p53Homo sapiens (human)
negative regulation of proteolysisCellular tumor antigen p53Homo sapiens (human)
negative regulation of DNA-templated transcriptionCellular tumor antigen p53Homo sapiens (human)
positive regulation of DNA-templated transcriptionCellular tumor antigen p53Homo sapiens (human)
positive regulation of RNA polymerase II transcription preinitiation complex assemblyCellular tumor antigen p53Homo sapiens (human)
positive regulation of transcription by RNA polymerase IICellular tumor antigen p53Homo sapiens (human)
response to antibioticCellular tumor antigen p53Homo sapiens (human)
fibroblast proliferationCellular tumor antigen p53Homo sapiens (human)
negative regulation of fibroblast proliferationCellular tumor antigen p53Homo sapiens (human)
circadian behaviorCellular tumor antigen p53Homo sapiens (human)
bone marrow developmentCellular tumor antigen p53Homo sapiens (human)
embryonic organ developmentCellular tumor antigen p53Homo sapiens (human)
positive regulation of peptidyl-tyrosine phosphorylationCellular tumor antigen p53Homo sapiens (human)
protein stabilizationCellular tumor antigen p53Homo sapiens (human)
negative regulation of helicase activityCellular tumor antigen p53Homo sapiens (human)
protein tetramerizationCellular tumor antigen p53Homo sapiens (human)
chromosome organizationCellular tumor antigen p53Homo sapiens (human)
neuron apoptotic processCellular tumor antigen p53Homo sapiens (human)
regulation of cell cycleCellular tumor antigen p53Homo sapiens (human)
hematopoietic stem cell differentiationCellular tumor antigen p53Homo sapiens (human)
negative regulation of glial cell proliferationCellular tumor antigen p53Homo sapiens (human)
type II interferon-mediated signaling pathwayCellular tumor antigen p53Homo sapiens (human)
cardiac septum morphogenesisCellular tumor antigen p53Homo sapiens (human)
positive regulation of programmed necrotic cell deathCellular tumor antigen p53Homo sapiens (human)
protein-containing complex assemblyCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stressCellular tumor antigen p53Homo sapiens (human)
thymocyte apoptotic processCellular tumor antigen p53Homo sapiens (human)
positive regulation of thymocyte apoptotic processCellular tumor antigen p53Homo sapiens (human)
necroptotic processCellular tumor antigen p53Homo sapiens (human)
cellular response to hypoxiaCellular tumor antigen p53Homo sapiens (human)
cellular response to xenobiotic stimulusCellular tumor antigen p53Homo sapiens (human)
cellular response to ionizing radiationCellular tumor antigen p53Homo sapiens (human)
cellular response to gamma radiationCellular tumor antigen p53Homo sapiens (human)
cellular response to UV-CCellular tumor antigen p53Homo sapiens (human)
stem cell proliferationCellular tumor antigen p53Homo sapiens (human)
signal transduction by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathway by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
reactive oxygen species metabolic processCellular tumor antigen p53Homo sapiens (human)
cellular response to actinomycin DCellular tumor antigen p53Homo sapiens (human)
positive regulation of release of cytochrome c from mitochondriaCellular tumor antigen p53Homo sapiens (human)
cellular senescenceCellular tumor antigen p53Homo sapiens (human)
replicative senescenceCellular tumor antigen p53Homo sapiens (human)
oxidative stress-induced premature senescenceCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathwayCellular tumor antigen p53Homo sapiens (human)
oligodendrocyte apoptotic processCellular tumor antigen p53Homo sapiens (human)
positive regulation of execution phase of apoptosisCellular tumor antigen p53Homo sapiens (human)
negative regulation of mitophagyCellular tumor antigen p53Homo sapiens (human)
regulation of mitochondrial membrane permeability involved in apoptotic processCellular tumor antigen p53Homo sapiens (human)
regulation of intrinsic apoptotic signaling pathway by p53 class mediatorCellular tumor antigen p53Homo sapiens (human)
positive regulation of miRNA transcriptionCellular tumor antigen p53Homo sapiens (human)
negative regulation of G1 to G0 transitionCellular tumor antigen p53Homo sapiens (human)
negative regulation of miRNA processingCellular tumor antigen p53Homo sapiens (human)
negative regulation of glucose catabolic process to lactate via pyruvateCellular tumor antigen p53Homo sapiens (human)
negative regulation of pentose-phosphate shuntCellular tumor antigen p53Homo sapiens (human)
intrinsic apoptotic signaling pathway in response to hypoxiaCellular tumor antigen p53Homo sapiens (human)
regulation of fibroblast apoptotic processCellular tumor antigen p53Homo sapiens (human)
negative regulation of reactive oxygen species metabolic processCellular tumor antigen p53Homo sapiens (human)
positive regulation of reactive oxygen species metabolic processCellular tumor antigen p53Homo sapiens (human)
negative regulation of stem cell proliferationCellular tumor antigen p53Homo sapiens (human)
positive regulation of cellular senescenceCellular tumor antigen p53Homo sapiens (human)
positive regulation of intrinsic apoptotic signaling pathwayCellular tumor antigen p53Homo sapiens (human)
inositol phosphate metabolic processInositol hexakisphosphate kinase 1Homo sapiens (human)
phosphatidylinositol phosphate biosynthetic processInositol hexakisphosphate kinase 1Homo sapiens (human)
negative regulation of cold-induced thermogenesisInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol phosphate biosynthetic processInositol hexakisphosphate kinase 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (71)

Processvia Protein(s)Taxonomy
nitric-oxide synthase activityNitric oxide synthase, brainHomo sapiens (human)
calcium channel regulator activityNitric oxide synthase, brainHomo sapiens (human)
protein bindingNitric oxide synthase, brainHomo sapiens (human)
calmodulin bindingNitric oxide synthase, brainHomo sapiens (human)
FMN bindingNitric oxide synthase, brainHomo sapiens (human)
sodium channel regulator activityNitric oxide synthase, brainHomo sapiens (human)
heme bindingNitric oxide synthase, brainHomo sapiens (human)
tetrahydrobiopterin bindingNitric oxide synthase, brainHomo sapiens (human)
arginine bindingNitric oxide synthase, brainHomo sapiens (human)
transmembrane transporter bindingNitric oxide synthase, brainHomo sapiens (human)
cadmium ion bindingNitric oxide synthase, brainHomo sapiens (human)
calcium-dependent protein bindingNitric oxide synthase, brainHomo sapiens (human)
flavin adenine dinucleotide bindingNitric oxide synthase, brainHomo sapiens (human)
NADP bindingNitric oxide synthase, brainHomo sapiens (human)
scaffold protein bindingNitric oxide synthase, brainHomo sapiens (human)
iron ion bindingPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
calcium ion bindingPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
protein bindingPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
lipid bindingPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
linoleate 13S-lipoxygenase activityPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
arachidonate 8(S)-lipoxygenase activityPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
arachidonate 15-lipoxygenase activityPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
linoleate 9S-lipoxygenase activityPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
cytokine activityInterferon betaHomo sapiens (human)
cytokine receptor bindingInterferon betaHomo sapiens (human)
type I interferon receptor bindingInterferon betaHomo sapiens (human)
protein bindingInterferon betaHomo sapiens (human)
chloramphenicol O-acetyltransferase activityInterferon betaHomo sapiens (human)
TAP bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
signaling receptor bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protein bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
peptide antigen bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
TAP bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protein-folding chaperone bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
transcription cis-regulatory region bindingCellular tumor antigen p53Homo sapiens (human)
RNA polymerase II cis-regulatory region sequence-specific DNA bindingCellular tumor antigen p53Homo sapiens (human)
DNA-binding transcription factor activity, RNA polymerase II-specificCellular tumor antigen p53Homo sapiens (human)
cis-regulatory region sequence-specific DNA bindingCellular tumor antigen p53Homo sapiens (human)
core promoter sequence-specific DNA bindingCellular tumor antigen p53Homo sapiens (human)
TFIID-class transcription factor complex bindingCellular tumor antigen p53Homo sapiens (human)
DNA-binding transcription repressor activity, RNA polymerase II-specificCellular tumor antigen p53Homo sapiens (human)
DNA-binding transcription activator activity, RNA polymerase II-specificCellular tumor antigen p53Homo sapiens (human)
protease bindingCellular tumor antigen p53Homo sapiens (human)
p53 bindingCellular tumor antigen p53Homo sapiens (human)
DNA bindingCellular tumor antigen p53Homo sapiens (human)
chromatin bindingCellular tumor antigen p53Homo sapiens (human)
DNA-binding transcription factor activityCellular tumor antigen p53Homo sapiens (human)
mRNA 3'-UTR bindingCellular tumor antigen p53Homo sapiens (human)
copper ion bindingCellular tumor antigen p53Homo sapiens (human)
protein bindingCellular tumor antigen p53Homo sapiens (human)
zinc ion bindingCellular tumor antigen p53Homo sapiens (human)
enzyme bindingCellular tumor antigen p53Homo sapiens (human)
receptor tyrosine kinase bindingCellular tumor antigen p53Homo sapiens (human)
ubiquitin protein ligase bindingCellular tumor antigen p53Homo sapiens (human)
histone deacetylase regulator activityCellular tumor antigen p53Homo sapiens (human)
ATP-dependent DNA/DNA annealing activityCellular tumor antigen p53Homo sapiens (human)
identical protein bindingCellular tumor antigen p53Homo sapiens (human)
histone deacetylase bindingCellular tumor antigen p53Homo sapiens (human)
protein heterodimerization activityCellular tumor antigen p53Homo sapiens (human)
protein-folding chaperone bindingCellular tumor antigen p53Homo sapiens (human)
protein phosphatase 2A bindingCellular tumor antigen p53Homo sapiens (human)
RNA polymerase II-specific DNA-binding transcription factor bindingCellular tumor antigen p53Homo sapiens (human)
14-3-3 protein bindingCellular tumor antigen p53Homo sapiens (human)
MDM2/MDM4 family protein bindingCellular tumor antigen p53Homo sapiens (human)
disordered domain specific bindingCellular tumor antigen p53Homo sapiens (human)
general transcription initiation factor bindingCellular tumor antigen p53Homo sapiens (human)
molecular function activator activityCellular tumor antigen p53Homo sapiens (human)
promoter-specific chromatin bindingCellular tumor antigen p53Homo sapiens (human)
inositol-1,3,4,5,6-pentakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol heptakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 5-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
protein bindingInositol hexakisphosphate kinase 1Homo sapiens (human)
ATP bindingInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 1-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 3-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol 5-diphosphate pentakisphosphate 5-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol diphosphate tetrakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (49)

Processvia Protein(s)Taxonomy
photoreceptor inner segmentNitric oxide synthase, brainHomo sapiens (human)
nucleoplasmNitric oxide synthase, brainHomo sapiens (human)
cytoplasmNitric oxide synthase, brainHomo sapiens (human)
mitochondrionNitric oxide synthase, brainHomo sapiens (human)
cytosolNitric oxide synthase, brainHomo sapiens (human)
cytoskeletonNitric oxide synthase, brainHomo sapiens (human)
plasma membraneNitric oxide synthase, brainHomo sapiens (human)
sarcoplasmic reticulumNitric oxide synthase, brainHomo sapiens (human)
sarcolemmaNitric oxide synthase, brainHomo sapiens (human)
dendritic spineNitric oxide synthase, brainHomo sapiens (human)
membrane raftNitric oxide synthase, brainHomo sapiens (human)
synapseNitric oxide synthase, brainHomo sapiens (human)
perinuclear region of cytoplasmNitric oxide synthase, brainHomo sapiens (human)
cell peripheryNitric oxide synthase, brainHomo sapiens (human)
protein-containing complexNitric oxide synthase, brainHomo sapiens (human)
plasma membraneNitric oxide synthase, brainHomo sapiens (human)
postsynaptic densityNitric oxide synthase, brainHomo sapiens (human)
cytosolNitric oxide synthase, brainHomo sapiens (human)
nucleusNitric oxide synthase, brainHomo sapiens (human)
virion membraneSpike glycoproteinSevere acute respiratory syndrome-related coronavirus
nucleusPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
cytosolPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
cytoskeletonPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
plasma membranePolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
adherens junctionPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
focal adhesionPolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
membranePolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
extracellular exosomePolyunsaturated fatty acid lipoxygenase ALOX15BHomo sapiens (human)
extracellular spaceInterferon betaHomo sapiens (human)
extracellular regionInterferon betaHomo sapiens (human)
Golgi membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
endoplasmic reticulumHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
Golgi apparatusHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
plasma membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
cell surfaceHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
ER to Golgi transport vesicle membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
secretory granule membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
phagocytic vesicle membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
early endosome membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
recycling endosome membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
extracellular exosomeHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
lumenal side of endoplasmic reticulum membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
MHC class I protein complexHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
extracellular spaceHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
external side of plasma membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
nuclear bodyCellular tumor antigen p53Homo sapiens (human)
nucleusCellular tumor antigen p53Homo sapiens (human)
nucleoplasmCellular tumor antigen p53Homo sapiens (human)
replication forkCellular tumor antigen p53Homo sapiens (human)
nucleolusCellular tumor antigen p53Homo sapiens (human)
cytoplasmCellular tumor antigen p53Homo sapiens (human)
mitochondrionCellular tumor antigen p53Homo sapiens (human)
mitochondrial matrixCellular tumor antigen p53Homo sapiens (human)
endoplasmic reticulumCellular tumor antigen p53Homo sapiens (human)
centrosomeCellular tumor antigen p53Homo sapiens (human)
cytosolCellular tumor antigen p53Homo sapiens (human)
nuclear matrixCellular tumor antigen p53Homo sapiens (human)
PML bodyCellular tumor antigen p53Homo sapiens (human)
transcription repressor complexCellular tumor antigen p53Homo sapiens (human)
site of double-strand breakCellular tumor antigen p53Homo sapiens (human)
germ cell nucleusCellular tumor antigen p53Homo sapiens (human)
chromatinCellular tumor antigen p53Homo sapiens (human)
transcription regulator complexCellular tumor antigen p53Homo sapiens (human)
protein-containing complexCellular tumor antigen p53Homo sapiens (human)
fibrillar centerInositol hexakisphosphate kinase 1Homo sapiens (human)
nucleoplasmInositol hexakisphosphate kinase 1Homo sapiens (human)
cytosolInositol hexakisphosphate kinase 1Homo sapiens (human)
nucleusInositol hexakisphosphate kinase 1Homo sapiens (human)
cytoplasmInositol hexakisphosphate kinase 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (55)

Assay IDTitleYearJournalArticle
AID1345153Human L-Phenylalanine hydroxylase (Catecholamine turnover)2004Journal of medicinal chemistry, Nov-18, Volume: 47, Issue:24
Tetrahydrobiopterin binding to aromatic amino acid hydroxylases. Ligand recognition and specificity.
AID1296008Cytotoxic Profiling of Annotated Libraries Using Quantitative High-Throughput Screening2020SLAS discovery : advancing life sciences R & D, 01, Volume: 25, Issue:1
Cytotoxic Profiling of Annotated and Diverse Chemical Libraries Using Quantitative High-Throughput Screening.
AID1347159Primary screen GU Rhodamine qHTS for Zika virus inhibitors: Unlinked NS2B-NS3 protease assay2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1346986P-glycoprotein substrates identified in KB-3-1 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1346987P-glycoprotein substrates identified in KB-8-5-11 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1347160Primary screen NINDS Rhodamine qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID625291Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver function tests abnormal2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625279Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for bilirubinemia2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625292Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) combined score2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625287Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatomegaly2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID320097Activity of tetrahydrobiopterin free nNOS2008Bioorganic & medicinal chemistry letters, Mar-01, Volume: 18, Issue:5
6-Acetyl-7,7-dimethyl-5,6,7,8-tetrahydropterin is an activator of nitric oxide synthases.
AID625289Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver disease2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625284Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatic failure2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625286Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatitis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625280Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cholecystitis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625288Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for jaundice2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625283Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for elevated liver function tests2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625281Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cholelithiasis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID320094Relaxation of phenyphrine-induced constriction in rat aortic rings2008Bioorganic & medicinal chemistry letters, Mar-01, Volume: 18, Issue:5
6-Acetyl-7,7-dimethyl-5,6,7,8-tetrahydropterin is an activator of nitric oxide synthases.
AID625285Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatic necrosis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625290Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver fatty2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625282Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cirrhosis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1347108qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347099qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1346986P-glycoprotein substrates identified in KB-3-1 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1296008Cytotoxic Profiling of Annotated Libraries Using Quantitative High-Throughput Screening2020SLAS discovery : advancing life sciences R & D, 01, Volume: 25, Issue:1
Cytotoxic Profiling of Annotated and Diverse Chemical Libraries Using Quantitative High-Throughput Screening.
AID1347093qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347106qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347091qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347097qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347082qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: LASV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347154Primary screen GU AMC qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1347102qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347103qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347098qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347094qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347101qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347407qHTS to identify inhibitors of the type 1 interferon - major histocompatibility complex class I in skeletal muscle: primary screen against the NCATS Pharmaceutical Collection2020ACS chemical biology, 07-17, Volume: 15, Issue:7
High-Throughput Screening to Identify Inhibitors of the Type I Interferon-Major Histocompatibility Complex Class I Pathway in Skeletal Muscle.
AID1347096qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347090qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347424RapidFire Mass Spectrometry qHTS Assay for Modulators of WT P53-Induced Phosphatase 1 (WIP1)2019The Journal of biological chemistry, 11-15, Volume: 294, Issue:46
Physiologically relevant orthogonal assays for the discovery of small-molecule modulators of WIP1 phosphatase in high-throughput screens.
AID1347083qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: Viability assay - alamar blue signal for LASV Primary Screen2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347105qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347107qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID651635Viability Counterscreen for Primary qHTS for Inhibitors of ATXN expression
AID1347100qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347092qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347425Rhodamine-PBP qHTS Assay for Modulators of WT P53-Induced Phosphatase 1 (WIP1)2019The Journal of biological chemistry, 11-15, Volume: 294, Issue:46
Physiologically relevant orthogonal assays for the discovery of small-molecule modulators of WIP1 phosphatase in high-throughput screens.
AID1347086qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lymphocytic Choriomeningitis Arenaviruses (LCMV): LCMV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1508630Primary qHTS for small molecule stabilizers of the endoplasmic reticulum resident proteome: Secreted ER Calcium Modulated Protein (SERCaMP) assay2021Cell reports, 04-27, Volume: 35, Issue:4
A target-agnostic screen identifies approved drugs to stabilize the endoplasmic reticulum-resident proteome.
AID1347089qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1346987P-glycoprotein substrates identified in KB-8-5-11 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1745845Primary qHTS for Inhibitors of ATXN expression
AID1347104qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347095qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (2,293)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990252 (10.99)18.7374
1990's538 (23.46)18.2507
2000's804 (35.06)29.6817
2010's587 (25.60)24.3611
2020's112 (4.88)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 56.06

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index56.06 (24.57)
Research Supply Index2.30 (2.92)
Research Growth Index4.56 (4.65)
Search Engine Demand Index86.07 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (56.06)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials93 (3.94%)5.53%
Trials0 (0.00%)5.53%
Reviews284 (12.02%)6.00%
Reviews0 (0.00%)6.00%
Case Studies96 (4.06%)4.05%
Case Studies0 (0.00%)4.05%
Observational3 (0.13%)0.25%
Observational0 (0.00%)0.25%
Other1,886 (79.85%)84.16%
Other9 (100.00%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]