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An 80-year-old mitochondrial disease patient with A3243G tRNA(Leu(UUR)) gene presenting cardiac dysfunction as the main symptom.

Authors
  • Higashikata, T
  • Koyama, J
  • Shimada, H
  • Yazaki, M
  • Owa, M
  • Ikeda, S
Type
Published Article
Journal
Internal medicine (Tokyo, Japan)
Publication Date
May 01, 2001
Volume
40
Issue
5
Pages
405–408
Identifiers
PMID: 11393411
Source
Medline
License
Unknown

Abstract

MELAS is characterized by mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes, but cardiac involvement also frequently occurs. An 80-year-old female patient had been suffering from insulin-dependent diabetes mellitus and neurosensory hearing loss. At the age of 79 she suffered metabolic acidosis with persistent drowsiness and was subsequently found to have severe cardiac dysfunction. Muscle biopsy disclosed the presence of abnormal mitochondria, and the MELAS gene mutation (A3243G of the tRNA(Leu(UUR))) was demonstrated. It is noteworthy that this mitochondrial disease patient has survived until a great age, which shows the wide clinical spectrum of MELAS, especially in the age of onset.

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