Related Experiment Videos
Muscle carnitine deficiency and fatal cardiomyopathy
Insights
This study reports a fatal case of a young boy with muscle weakness and cardiomyopathy, linked to decreased muscle carnitine levels. Carnitine treatment was ineffective, highlighting the severe progression of this metabolic disorder.
Area of Science:
- Biochemistry
- Pediatric Cardiology
- Neuromuscular Disorders
Background:
- Carnitine deficiency is associated with muscle weakness and cardiomyopathy.
- Lipid accumulation in muscle fibers can indicate metabolic myopathies.
Abstract:
A 23-month-old boy with progressive muscle weakness and severe cardiomyopathy was found to have oil red O positive vacuoles predominantly in type 1 muscle fibers. Serum carnitine was normal, but muscle carnitine content was decreased. Both parents were clinically normal, but the muscle carnitine level was low in the father. Despite oral treatment with carnitine, the condition progressed and was fatal. At autopsy, cardiac muscle showed borderline low carnitine content and numerous mitochondria, but no lipid accumulation.