Dystonia Disorders
|
0.050 |
GeneticVariation
|
group |
BEFREE |
GTP cyclohydrolase I mutations in patients with dystonia responsive to anticholinergic drugs.
|
9328244 |
1997 |
Dystonia Disorders
|
0.050 |
GeneticVariation
|
group |
BEFREE |
Dystonia with motor delay in compound heterozygotes for GTP-cyclohydrolase I gene mutations.
|
9667588 |
1998 |
Dystonia Disorders
|
0.050 |
GeneticVariation
|
group |
BEFREE |
We found a recessive GTPCH mutation (R249S, 747C-->G in a dystonia patient.
|
10987649 |
1999 |
Dystonia Disorders
|
0.050 |
GeneticVariation
|
group |
BEFREE |
Mutant GTP cyclohydrolase I in autosomal dominant dystonia and recessive hyperphenylalaninemia.
|
9921872 |
1999 |
Dystonia Disorders
|
0.050 |
GeneticVariation
|
group |
BEFREE |
Dominant negative effect of GTP cyclohydrolase I mutations in dopa-responsive hereditary progressive dystonia.
|
9749603 |
1998 |
Cardiomyopathy, Dilated
|
0.010 |
Biomarker
|
group |
BEFREE |
The expression of inducible nitric oxide synthase (iNOS) was earlier demonstrated in the ventricles of patients with dilated cardiomyopathy (DCM) although that of GCHI was not clarified.
|
15698596 |
2005 |
Diabetes Mellitus
|
0.010 |
AlteredExpression
|
group |
BEFREE |
In vivo activation of AMP-activated protein kinase attenuates diabetes-enhanced degradation of GTP cyclohydrolase I.
|
19528375 |
2009 |
Metabolic Diseases
|
0.010 |
Biomarker
|
group |
BEFREE |
GTP cyclohydrolase I (GTPCH) deficiency could impair the synthesis of tetrahydrobiopterin and causes metabolic diseases involving phenylalanine catabolism, neurotransmitter synthesis, nitric oxide production and so on.
|
30742839 |
2019 |
Movement Disorders
|
0.010 |
GeneticVariation
|
group |
BEFREE |
We recruited 16 patients from 11 Russian families with dopa-responsive movement disorders according to the following criteria: 1) family history compatible with autosomal recessive inheritance; 2) onset of symptoms at </=30 years of age; and 3) the lack of mutations in the GTP cyclohydrolase I gene (in sporadic cases).
|
12889082 |
2003 |
Neoplasms
|
0.010 |
Biomarker
|
group |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Phenylketonurias
|
0.010 |
Biomarker
|
group |
BEFREE |
After retroviral gene transfer of PAH and GTP-CH both normal and PKU patient fibroblasts were able to metabolize phenylalanine, however, in lower amounts compared to genetically modified keratinocytes.
|
12208136 |
2002 |
Parkinsonian Disorders
|
0.010 |
GeneticVariation
|
group |
BEFREE |
We conclude that so far there is no evidence that mutations of the GTPCH gene are responsible for the development of parkinsonism in patients without a positive family history of DRD.
|
8880688 |
1996 |
Dystonia
|
0.050 |
GeneticVariation
|
phenotype |
BEFREE |
Mutant GTP cyclohydrolase I in autosomal dominant dystonia and recessive hyperphenylalaninemia.
|
9921872 |
1999 |
Dystonia
|
0.050 |
GeneticVariation
|
phenotype |
BEFREE |
Dystonia with motor delay in compound heterozygotes for GTP-cyclohydrolase I gene mutations.
|
9667588 |
1998 |
Dystonia
|
0.050 |
GeneticVariation
|
phenotype |
BEFREE |
GTP cyclohydrolase I mutations in patients with dystonia responsive to anticholinergic drugs.
|
9328244 |
1997 |
Dystonia
|
0.050 |
GeneticVariation
|
phenotype |
BEFREE |
We found a recessive GTPCH mutation (R249S, 747C-->G in a dystonia patient.
|
10987649 |
1999 |
Dystonia
|
0.050 |
GeneticVariation
|
phenotype |
BEFREE |
Dominant negative effect of GTP cyclohydrolase I mutations in dopa-responsive hereditary progressive dystonia.
|
9749603 |
1998 |
Endothelial dysfunction
|
0.030 |
GeneticVariation
|
phenotype |
BEFREE |
GTP cyclohydrolase I gene polymorphisms are associated with endothelial dysfunction and oxidative stress in patients with type 2 diabetes mellitus.
|
25369080 |
2014 |
Endothelial dysfunction
|
0.030 |
AlteredExpression
|
phenotype |
BEFREE |
Increased endothelial tetrahydrobiopterin synthesis by targeted transgenic GTP-cyclohydrolase I overexpression reduces endothelial dysfunction and atherosclerosis in ApoE-knockout mice.
|
14707037 |
2004 |
Endothelial dysfunction
|
0.030 |
GeneticVariation
|
phenotype |
BEFREE |
In Study 2, a functional haplotype (X haplotype) in the GCH1 gene, encoding GTP-cyclohydrolase I, the rate-limiting enzyme in biopterin biosynthesis, was associated with endothelial dysfunction in the presence of high-sensitivity C-reactive protein in 440 coronary artery disease patients.
|
21969008 |
2011 |
CNS metastases
|
0.010 |
Biomarker
|
phenotype |
BEFREE |
We describe a unique presentation of autosomal recessive (AR) GTP cyclohydrolase I (GTPCH) deficiency, with severe CNS involvement but without hyperphenylalaninemia.
|
18276179 |
2008 |
Dopa-Responsive Dystonia
|
0.100 |
Biomarker
|
disease |
BEFREE |
Recently the GTP cyclohydrolase I (GTPCH) gene was isolated as the first causative gene for dopa-responsive dystonia (DRD).
|
8852666 |
1996 |
Dopa-Responsive Dystonia
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
We found that dominantly inherited, hereditary progressive dystonia (HPD), first described by Segawa and also called dopa responsive dystonia (DRD), is caused by the mutations of GTP cyclohydrolase I gene, the partial decrease in the enzyme activity, and probably in striatal dopamine level, to less than 20% of the normal values.
|
9266429 |
1997 |
Dopa-Responsive Dystonia
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Mutations in GTP cyclohydrolase I (GCHI) are found in 50 to 60% of cases with dopa-responsive dystonia (DRD).
|
15753436 |
2005 |
Dopa-Responsive Dystonia
|
0.100 |
Biomarker
|
disease |
BEFREE |
Furthermore, very recently, we found that the GTP cyclohydrolase I gene is causative for hereditary progressive dystonia with marked diurnal fluctuation, also known as DOPA-responsive dystonia (Ichinose, H., Ohye, T., Takahashi, E., Seki, N., Hori, T., Segawa, M., Nomura, Y., Endo, K., Tanaka, H., Tsuji, S., Fujita, K., and Nagatsu, T. (1994) Nature Genetics 8, 236-242).
|
7730309 |
1995 |