Hyperphenylalaninemia, BH4-Deficient, B
|
0.030 |
GeneticVariation
|
disease |
BEFREE |
To investigate whether the heterozygous GTPCH missense mutation p.Leu117Arg identified from a patient with severe infancy-onset dopa-responsive motor impairments is causative and establish a clinical relevant GTPCH deficiency mouse model, we generated a mouse mutant mimicking this missense mutation using the CRISPR/Cas9 technology.
|
30742839 |
2019 |
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 |
Hyperphenylalaninaemia
|
0.030 |
Biomarker
|
disease |
BEFREE |
Furthermore, indirect evidence indicated that the GTP cyclohydrolase I (GTPCH) feedback regulatory protein (GFRP) complex may be a sensor for brain L-Phe elevation to ameliorate the toxic effects of HPA.
|
29520738 |
2018 |
Glioblastoma
|
0.010 |
Biomarker
|
disease |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Neoplasms
|
0.010 |
Biomarker
|
group |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Adult Glioblastoma
|
0.010 |
Biomarker
|
disease |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Childhood Glioblastoma
|
0.010 |
Biomarker
|
disease |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Glioblastoma Multiforme
|
0.010 |
Biomarker
|
disease |
BEFREE |
Reactive species balance via GTP cyclohydrolase I regulates glioblastoma growth and tumor initiating cell maintenance.
|
29409010 |
2018 |
Phenylketonuria II
|
0.010 |
GeneticVariation
|
disease |
BEFREE |
There were four cases (40%) with 6-pyruvoyl-tetrahydropterin synthase deficiency, three with GTP cyclohydrolase I - autosomal recessive form deficiency, and three with dihydropteridine reductase deficiency (30% each).
|
28801146 |
2018 |
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 |
Diabetes Mellitus, Non-Insulin-Dependent
|
0.010 |
GeneticVariation
|
disease |
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 |
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 |
Arteriosclerosis
|
0.020 |
Biomarker
|
disease |
BEFREE |
Induction of vascular GTP-cyclohydrolase I and endogenous tetrahydrobiopterin synthesis protect against inflammation-induced endothelial dysfunction in human atherosclerosis.
|
21969008 |
2011 |
Atherosclerosis
|
0.020 |
Biomarker
|
disease |
BEFREE |
Induction of vascular GTP-cyclohydrolase I and endogenous tetrahydrobiopterin synthesis protect against inflammation-induced endothelial dysfunction in human atherosclerosis.
|
21969008 |
2011 |
Dopa-Responsive Dystonia
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
At present, the following disorders are categorized as dystonia-plus syndromes: Dopa-responsive dystonia (DRD) is a mostly pediatric-onset, neurometabolic disorder with two different modes of inheritance: in its autosomal-dominant form, heterozygous mutations of GTP-cyclohydrolase I (GCH1, DYT5) cause DRD with reduced penetrance and excellent and lasting response to levodopa.
|
20590807 |
2010 |
Diabetes
|
0.010 |
AlteredExpression
|
disease |
BEFREE |
In vivo activation of AMP-activated protein kinase attenuates diabetes-enhanced degradation of GTP cyclohydrolase I.
|
19528375 |
2009 |
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 |
Hyperphenylalaninaemia
|
0.030 |
Biomarker
|
disease |
BEFREE |
We describe a unique presentation of autosomal recessive (AR) GTP cyclohydrolase I (GTPCH) deficiency, with severe CNS involvement but without hyperphenylalaninemia.
|
18276179 |
2008 |
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 |
Parkinson Disease
|
0.040 |
Biomarker
|
disease |
BEFREE |
We found that the activity, mRNA level, and protein content of tyrosine hydroxylase (TH), as well as the levels of the tetrahydrobiopterin (BH4) cofactor of TH and the activity of the BH4-synthesizing enzyme, GTP cyclohydrolase I (GCHI), were markedly decreased in the substantia nigra and striatum in the PD brain.
|
17982884 |
2007 |
Young onset Parkinson disease
|
0.010 |
GeneticVariation
|
disease |
BEFREE |
Low frequency of Parkin, Tyrosine Hydroxylase, and GTP Cyclohydrolase I gene mutations in a Danish population of early-onset Parkinson's Disease.
|
16643317 |
2006 |
Dopa-Responsive Dystonia
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
One of the possibly mutated genes in DOPA-responsive dystonia (DRD, Segawa's disease) is the gene encoding GTP cyclohydrolase I, which is the rate-limiting enzyme for tetrahydrobiopterin (BH4) biosynthesis.
|
16135092 |
2005 |
Borderline Personality Disorder
|
0.010 |
GeneticVariation
|
disease |
BEFREE |
An association study between BPD and a novel single nucleotide polymorphism (SNP) in GCHI (G to A at position -959 bp, upstream of the ATG codon), is also presented here.
|
15909293 |
2005 |
Bronchopulmonary Dysplasia
|
0.010 |
GeneticVariation
|
disease |
BEFREE |
An association study between BPD and a novel single nucleotide polymorphism (SNP) in GCHI (G to A at position -959 bp, upstream of the ATG codon), is also presented here.
|
15909293 |
2005 |
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 |