Increase in the relative abundance of preproenkephalin A messenger RNA in the ventricles of cardiomyopathic hamsters

Michel Ouellette, Léa Brakier-Gingras

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Preproenkephalin A messenger RNA was detected in hamster heart by Northern blot analysis using a human preproenkephalin A cDNA probe. Ventricular levels of this messenger were one order of magnitude lower than atrial levels, which were equivalent to brain levels. Furthermore, in the heart of cardiomyopathic hamsters, an animal model of cardiac hypertrophy and congestive heart failure, the relative abundance of the preproenkephalin A messenger RNA was found to increase three- to four-fold in ventricles while no change was seen in atria. These results support the hypothesis that the heart has the potential for locally synthesizing enkephalins and provide evidence that alterations in preproenkephalin A messenger RNA levels are associated with the development of cardiac hypertrophy and failure.

Original languageEnglish (US)
Pages (from-to)449-454
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number1
Publication statusPublished - Aug 30 1988


ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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