Mitochondrial myopathy and respiratory failure associated with a new mutation in the mitochondrial transfer ribonucleic acid glutamic acid gene

Claudio Bruno, Oliviero Sacco, Filippo M. Santorelli, Stefania Assereto, Emmanuel Tonoli, Massimo Bado, Giovanni A. Rossi, Carlo Minetti

Research output: Contribution to journalArticlepeer-review

Abstract

We report a novel T14687C mutation in the mitochondrial transfer ribonucleic acid glutamic acid gene in a 16-year-old boy with myopathy and lactic acidosis, retinopathy, and progressive respiratory failure leading to death. A muscle biopsy showed cytochrome c oxidase - negative ragged-red fibers, and biochemical analysis of the respiratory chain enzymes in muscle homogenate revealed complex I and complex IV deficiencies. The mutation, which affects the trinucleotide (TΨC) loop, was nearly homoplasmic in the muscle DNA of the proband, but it was absent in his blood and in the blood from the asymptomatic mother, suggesting that it may have been a spontaneous somatic mutation in muscle.

Original languageEnglish
Pages (from-to)300-303
Number of pages4
JournalJournal of Child Neurology
Volume18
Issue number4
Publication statusPublished - Apr 1 2003

ASJC Scopus subject areas

  • Clinical Neurology
  • Pediatrics, Perinatology, and Child Health

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