Allylamine and acrolein toxicity in perfused rat hearts

Jerald L. Sklar, Peter G. Anderson, Paul J. Boor

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We assessed the in vitro toxicity of the cardiovascular toxicant allylamine, and its presumed in vivo metabolite, acrolein. In dose-response experiments, rat hearts perfused with allylamine (10-30 mm) or acrolein (0.01-3.0 mm) for 2 hr were assessed by standard histopathology and assay of creatine kinase (CK) in effluent. Allylamine-perfused hearts showed no grossly apparent functional abnormality except at 30 mm, but acrolein-perfused hearts beat irregularly and stopped rapidly (within 15 min at 0.01-0.3 mm, and by 5 min at 3.0 mm). Extensive contraction band necrosis and an apparently dose-dependent loss of CK were evident in allylamine-perfused hearts, whereas acrolein perfusion resulted in no morphologic lesions or CK loss. Additional experiments, however, suggest that acrolein perfusion results in denaturation of CK, making it undetectable in effluent. In hemodynamic preparations of rat hearts perfused with 10 mm allylamine, contraction band necrosis and extensive mitochondrial changes were seen by electron microscopy. Allylamine caused a marked rise in left ventricular pressure at 5 and 10 min, followed by a slow decline to a markedly depressed level at the end of 2 hr. End diastolic pressure rose steadily throughout the 2-hr perfusion. Coronary flow was similar in control and allylamine-perfused hearts for 1 hr, but then declined slowly. These experiments suggest that vascular spasm or alterations in coronary flow are not the cause of allylamine-induced myocardial damage. Allylamine's toxic effect on myocardium in this model may be mediated through its metabolism and subsequent injurious intracellular events.

Original languageEnglish (US)
Pages (from-to)535-544
Number of pages10
JournalToxicology and Applied Pharmacology
Volume107
Issue number3
DOIs
StatePublished - Mar 1 1991

ASJC Scopus subject areas

  • Toxicology
  • Pharmacology

Fingerprint Dive into the research topics of 'Allylamine and acrolein toxicity in perfused rat hearts'. Together they form a unique fingerprint.

  • Cite this