galactosemias/arginine

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Arginine does not rescue p.Q188R mutation deleterious effect in classic galactosemia.

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BACKGROUND Classic galactosemia is a rare genetic metabolic disease with an unmet treatment need. Current standard of care fails to prevent chronically-debilitating brain and gonadal complications. Many mutations in the GALT gene responsible for classic galactosemia have been described to give rise

Molecular characterization of two galactosemia mutations: correlation of mutations with highly conserved domains in galactose-1-phosphate uridyl transferase.

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Galactosemia is an autosomal recessive disorder of human galactose metabolism caused by deficiency of the enzyme galactose-1-phosphate uridyl transferase (GALT). The molecular basis of this disorder is at present not well understood. We report here two missense mutations which result in low or

Mutations in the galactose-1-phosphate uridyltransferase gene of two families with mild galactosaemia variants.

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Classical galactosaemia, deficiency of galactose-1-phosphate uridyltransferase (GALT), is characterized by acute symptoms of hepatomegaly, jaundice, sepsis, cataracts and growth retardation. Treatment with dietary galactose restriction corrects these complications immediately; however, most of these

Cognitive strengths and weaknesses in children and adolescents homozygous for the galactosemia Q188R mutation: a descriptive study.

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Children and adolescents (n = 25) with galactosemia homozygous for the common Q188R mutation (substitution of glutamine codon 188 with arginine) were group matched for sex and age with healthy control participants (n = 20). Participants were administered an abbreviated neuropsychological battery by

Identification of mutations in the galactose-1-phosphate uridyltransferase (GALT) gene in 16 Turkish patients with galactosemia, including a novel mutation of F294Y. Mutation in brief no. 235. Online.

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Classical galactosemia caused by deficiency of galactose-1-phosphate uridyltransferase (GALT) is a severe autosomal recessive disorder. We report here molecular analysis of 16 unrelated Turkish galactosemia index cases without GALT activity. Almost 84% of all mutant alleles were identified in this

Molecular characterization of galactosemia (type 1) mutations in Japanese.

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We characterized two novel mutations of the galactose-1-phosphate uridyltransferase (GALT) gene in two Japanese patients with GALT deficiency and identified N314D and R333W mutations, previously found in Caucasians. One novel missense mutation was an G-to-A transition in exon 8, resulting in the

Biochemical and molecular studies of 132 patients with galactosemia.

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We evaluated 132 galactosemia patients for the Q188R (glutamine-188 to arginine) mutation in the human galactose-1-phosphate uridyltransferase (GALT) gene and for GALT activity in their hemolysates by a sensitive radioisotopic method. In those without any detectable GALT activity (GG), the Q188R

Biochemical characterization of two GALK1 mutations in patients with galactokinase deficiency.

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Galactokinase (GALK1) deficiency is an autosomal recessive disorder, which causes cataract formation in children not maintained on a lactose-free diet. Galactokinase deficiency results from mutation in the GALK1 gene mapped on 17q24. Since GK1 cDNA was cloned about 20 mutations (prevalently

Three missense mutations in the galactose-1-phosphate uridyltransferase gene of three families with mild galactosaemia.

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Classical galactosaemia caused by deficiency of galactose-1-phosphate uridyltransferase (GALT) is characterized by acute symptoms of hepatocellular dysfunction, sepsis, cataracts and failure to thrive. Galactose limitation reverses these complications immediately, however, most of these children

A molecular approach to galactosemia.

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Classical galactosemia (G/G) is caused by the lack of galactose-1-phosphate uridyltransferase (GALT) activity. A more common clinical variant, Duarte/Classical (D/G) produces partial enzymatic impairment. Although neonatal death due to G/G galactosemia has been largely eliminated by population-based

Arginine Functionally Improves Clinically Relevant Human Galactose-1-Phosphate Uridylyltransferase (GALT) Variants Expressed in a Prokaryotic Model.

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Classic galactosemia is a rare genetic disease of the galactose metabolism, resulting from deficient activity of galactose-1-phosphate uridylyltransferase (GALT). The current standard of care is lifelong dietary restriction of galactose, which however fails to prevent the development of long-term

Sustaining hypercitrullinemia, hypercholesterolemia and augmented oxidative stress in Japanese children with aspartate/glutamate carrier isoform 2-citrin-deficiency even during the silent period.

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Neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD) shows diverse metabolic abnormalities such as urea cycle dysfunction together with citrullinemia, galactosemia, and suppressed gluconeogenesis. Such abnormalities apparently resolve during the first year of life. However,

[A difficult and complicated case study: neonatal intrahepatic cholestasis caused by citrin deficiency].

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Neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD) is a kind of inborn errors of metabolism, with the main clinic manifestations of jaundice, hepatomegaly, and abnormal liver function indices. As a mitochondrial solute carrier protein, citrin plays important roles in aerobic

The biochemical role of glutamine 188 in human galactose-1-phosphate uridyltransferase.

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The substitution of arginine for glutamine at amino acid 188 (Q188R) ablates the function of human galactose-1-phosphate uridyltransferase (GALT) and is the most common mutation causing galactosemia in the white population. GALT catalyzes two consecutive reactions. The first reaction binds

Fanconi- Bickel Syndrome: mutation in an Indian patient.

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Fanconi -Bickel Syndrome (FBS) is described as an autosomal recessive Glycogen Storage Disorder type XI. The underlying enzyme defect is unknown. The gene GLUT2 maps to 3q26.1-q26.3; encodes a facultative glucose transporter gene. A 6-y-old girl presented with the characteristic facial gestalt,

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