Inherited idiopathic dilated cardiomyopathy with multiple deletions of mitochondrial DNA.
case_report · Level V
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Abstract
Idiopathic dilated cardiomyopathy (DCM) is often familial, but the pathogenetic mechanisms of DCM are unknown. We report a woman and her son who both died of DCM. The son's cardiac and skeletal muscles showed a high proportion of mitochondrial DNA (mtDNA) with multiple large deletions by Southern-blot hybridisation and polymerase chain reaction analyses. Amplification of the mother's cardiac mtDNA from 20-year-old paraffin-embedded sections showed that she also had deletions of mtDNA. These data suggest that a subgroup of inherited DCMs is associated with mtDNA mutations.