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Chapter: Paediatrics: Inherited metabolic disease

Paediatrics: Disorders of carbohydrate metabolism

Autosomal recessive conditions.

Disorders of carbohydrate metabolism

 

Autosomal recessive conditions. Often presenting with one or more of the following—episodic hypoglycaemia; lactic acidosis; poor growth and hypotonia; mental retardation/developmental delay; and vomiting; cramps, myoglobinuria, and muscle weakness.

 

Glycogen storage disease (GSD) 

Specific enzyme defects preventing mobilization of glucose from glycogen, and resulting in abnormal storage in liver and/or muscle (see Table 26.2).


Disorders of fructose metabolism

 

Hereditary fructose intolerance 

Fructose-1-phosphate aldolase deficien-cy. Failure to thrive; hypoglycaemia; metabolic/lactic acidosis; vomiting; GI bleeding.

 

Galactosaemia

 

Galactose-1-phosphate uridyltransferase deficiency. Failure to thrive; cata-racts; hepatomegaly; jaundice, vomiting and diarrhoea; mental retardation (if untreated). Treatment with galactose-free diet.

 

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