Effects of triiodothyronine and carnitine therapy on myocardial dysfunction in diabetic rats

Canadian Journal of Physiology and Pharmacology
A G Tahiliani, J H McNeill

Abstract

Streptozocin-diabetic rats were treated with a combination of triiodothyronine and carnitine for 6 weeks. These compounds were used as they are known to correct the diabetes-induced depression of cardiac myosin ATPase and sarcoplasmic reticular (SR) calcium uptake, respectively. Myocardial performance, which was assessed using the working heart preparation, revealed a depression of function in untreated diabetics when compared with controls at most left atrial filling pressures. Hearts from diabetic rats treated with the combination exhibited depression at only the higher filling pressures as compared with untreated or treated controls. The results suggest that functional alterations occurring as a result of diabetes cannot be accounted for by the depression of cardiac myosin ATPase and SR calcium uptake alone.

Citations

Feb 1, 1991·Cardiovascular Drugs and Therapy·N S DhallaR Ferrari
Sep 18, 1991·Molecular and Cellular Biochemistry·S W Schaffer
Jun 18, 2004·Annals of the New York Academy of Sciences·Heinrich TaegtmeyerMelissa van Arsdall

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