L-propionyl-carnitine Protection of Mitochondria in Ischemic Rat Hearts

Overview

Journal Mol Cell Biochem

Publisher Springer

Specialty Biochemistry

Date 1989 Jun 24

PMID 2779536

Citations 15

Authors

F Di Lisa

R Menabo

N SILIPRANDI

Affiliations

Soon will be listed here.

Abstract

The energy-linked processes (transmembrane potential and oxidative phosphorylation) resulted in impaired mitochondria isolated from ischemic perfused rat hearts. Addition of 1.5 mM L-propionyl-carnitine to the perfusate significantly reduced the ischemic damage and ameliorated mitochondrial Ca2+ homeostasis. In both normoxic and ischemic hearts perfused with L-propionyl-carnitine a consistent amount of propionyl-CoA-otherwise undetectable-was produced. L-propionyl-carnitine treatment also prevented the decrease of succinyl-CoA associated with the ischemic condition. These results and the decrease of myocardial acetyl-CoA induced by exogenous L-propionyl-carnitine points to the anaplerotic effect of this ester. The consequently improved flux in the tricarboxylic-acid cycle may account for the observed protection of mitochondrial functions afforded by L-propionyl-carnitine in the ischemic perfused hearts.

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