Angiotensin-converting enzyme inhibition and salt in experimental myocardial infarction

Kazunori Yoshida, Masahiro Kohzuki, David J. Casley, Colin I. Johnston

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

It is well known that angiotensin-converting enzyme inhibitors attenuate progressive ventricular enlargement or hypertrophy after myocardial infarction and that cardiac angiotensin-converting enzyme activity is increased in the rat model of myocardial infarction. In this study, to determine whether the beneficial effects of angiotensin-converting enzyme inhibition on cardiac hypertrophy after myocardial infarction are due to a reduction in ventricular afterload or to inhibition of cardiac angiotensin- converting enzyme, we used sodium loading during angiotensin-converting enzyme inhibition. The rat model of myocardial infarction was treated with a vehicle, 1% saline, as drinking fluid, perindopril (2 mg/kg/day), or 1% saline as drinking fluid plus perindopril (2 mg/kg/day) for 6 weeks. Perindopril reduced blood pressure, prevented cardiac hypertrophy, and inhibited cardiac angiotensin-converting enzyme. The effects of perindopril on blood pressure and cardiac hypertrophy were abolished by sodium loading, which did not alter the degree of cardiac angiotensin-converting enzyme inhibition. Thus the actions of perindopril on cardiac hypertrophy depend more on blood pressure reduction than on cardiac angiotensin-converting enzyme inhibition in the rat model of myocardial infarction.

Original languageEnglish
Pages (from-to)357-365
Number of pages9
JournalJournal of cardiovascular pharmacology
Volume32
Issue number3
DOIs
Publication statusPublished - 1998 Sep

Keywords

  • Angiotensin-converting enzyme inhibitor
  • Cardiac hypertrophy
  • Myocardial infarction
  • Rats
  • Sodium

ASJC Scopus subject areas

  • Pharmacology
  • Cardiology and Cardiovascular Medicine

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