Identification of a mutation in liver glycogen phosphorylase in glycogen storage disease type VI

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Glycogen phosphorylase and its converter enzymes in haemolysates of normal human subjects and of patients with type VI glycogen-storage disease. A study of phosphorylase kinase deficiency.

1. The properties of phosphorylase a, phosphorylase b, phosphorylase kinase and phosphorylase phosphatase present in a human haemolysate were investigated. The two forms of phosphorylase have the same affinity for glucose 1-phosphate but greatly differ in Vmax. Phosphorylase b is only partially stimulated by AMP, since, in the presence of the nucleotide, it is about tenfold less active than pho...

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Liver Glycogen Phosphorylase Kinase

Liver glycogen phosphorylase kinase was assayed by measuring the radioactivity of [y-32P]ATP incorporated into rabbit skeletal muscle phosphorylase b. Using this assay two forms of phosphorylase kinase, Kinase I and Kinase II, were pirified about 70and 130-fold, respectively, from rabbit liver cytosol by DEAE-Sephadex A50 column chromatography, ammonium sulfate fractionation, gel filtration on ...

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Liver transplantation in glycogen storage disease type I

Glycogen storage disease type I (GSDI), an inborn error of carbohydrate metabolism, is caused by defects in the glucose-6-transporter/glucose-6-phosphatase complex, which is essential in glucose homeostasis. Two types exist, GSDIa and GSDIb, each caused by different defects in the complex. GSDIa is characterized by fasting intolerance and subsequent metabolic derangements. In addition to these ...

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Glycogen storage disease (type-III).

Glycogen storage disease (GSD) type III is caused by deficiency of the enzyme amylo-1,6 glucosidase (debranching enzyme) leading to the storage of an abnormal glycogen with short outer chains called limit dextrins(l). Clinical manifestations are usually due to decreased hepatic glycogenolysis and occasionally due to a myopathy associated with an increase in muscle glycogen. We report a case of ...

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Type V glycogen storage disease.

We describe three children with type V glycogen storage disease, who were reluctant to climb hills. We suggest that this condition, usually described as being of adult onset, can often be diagnosed in childhood.

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ژورنال

عنوان ژورنال: Human Molecular Genetics

سال: 1998

ISSN: 1460-2083

DOI: 10.1093/hmg/7.5.865