Abstract
Adriamycin is known to produce treatment limiting cardiotoxicity. We studied the effect of niacin, isocitrate, and N-acetyl-cysteine on cumulative adriamycin-induced cardiotoxicity in NMRI mice. Pathologic grading of the hearts indicated a significant reduction in myocardial injury. In addition, according to median survival and weight changes there was a significant decrease in toxicity. As demonstrated in Ehrlich ascites tumor, coadministration of N-acetyl-cysteine may interfere with the antitumor activity of adriamycin. In contrast, niacin and isocitrate did not show significant inhibition of antineoplastic activity. Our experiments suggest a promising role of niacin and isocitrate as potential cardioprotectors in the course of chemotherapy with adriamycin.
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