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Liver glycogen synthase deficiency: a rarely diagnosed entity
R Gitzelmann1, M A Spycher, G Feil
1Department of Paediatrics, University of Zürich, Switzerland.
European Journal of Pediatrics
|July 1, 1996
Summary
Liver glycogen synthase deficiency is a condition causing low blood sugar and fatigue, especially in the morning. Early detection and dietary management with frequent, protein-rich meals can effectively treat this disorder.
Area of Science:
- Biochemistry
- Pediatrics
- Genetics
Background:
- Liver glycogen synthase deficiency is an inherited metabolic disorder.
- It affects the liver's ability to store glycogen, a form of glucose.
Observation:
- Two German families with three children exhibiting symptoms of hepatic glycogen synthase deficiency were studied.
- Patients presented with morning fatigue, ketotic hypoglycemia, and deficient hepatic glycogen synthase activity.
- Metabolic profiles confirmed the diagnosis, showing typical patterns of glucose, lactate, alanine, and ketone levels.
Findings:
- Frequent protein-rich meals and uncooked corn starch suspension effectively corrected symptoms and metabolic abnormalities.
- The study identified oligosymptomatic and asymptomatic siblings, indicating a higher prevalence of the condition.
Implications:
- Liver glycogen synthase deficiency may be more common than previously thought.
- Early identification in children with specific symptoms like morning drowsiness and hypoglycemia is crucial.
- Prompt diagnosis and dietary intervention can significantly improve patient outcomes.