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. 1974 Mar;49(3):186–191. doi: 10.1136/adc.49.3.186

Hepatic phosphorylase deficiency

Its differentiation from other hepatic glycogenoses

J Fernandes, J F Koster, W F A Grose, N Sorgedrager
PMCID: PMC1648696  PMID: 4523806

Abstract

Two brothers with glycogen storage disease of the liver are reported. The clinical symptoms were hepatomegaly and a slight muscle hypotonia; hypoglycaemic symptoms seldom occurred. There was deficient activity of phosphorylase and normal phosphorylase b kinase activity in the leucocytes and in the liver.

Three aspects of carbohydrate metabolism were investigated. Glycogenolysis was studied by glucagon tests, either performed after an overnight fast or postprandially; the ensuing glucose curves were flat or almost flat. Glycolysis was investigated by oral tolerance tests with glucose, galactose, or fructose; the ensuing blood lactate curves showed a significant lactate increase. Gluconeogenesis was investigated by tolerance tests with l-alanine or glycerol administered intravenously, and dihydroxyacetone administered orally; the ensuing plasma glucose curves were characterized by a rapid conspicuous glucose increase.

A screening method is described to diagnose tentatively a phosphorylase deficiency on the basis of hexose and glucagon tolerance tests.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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