Diclofenac sodium, a nonselective nonsteroidal anti-inflammatory drug aggravates doxorubicin-induced cardiomyopathy in rats

Journal of Cardiovascular Pharmacology
Bhulan Kumar SinghKiran Dubey

Abstract

The cardiotoxic effects of selective cyclo-oxygenase-2 inhibitors are well documented. Recently, concerns have been raised over the cardiovascular safety of nonselective nonsteroidal antiinflammatory drugs. The aim of this study was to assess the cardiac effects of diclofenac sodium on doxorubicin-induced cardiomyopathy in rats. Male Wistar rats were treated with doxorubicin (15 mg/kg intraperitoneally, single dose), diclofenac sodium (2.5 and 10 mg/kg/day, respectively, by gavage for 5 days) alone and doxorubicin + diclofenac sodium treatment, 24 hours after doxorubicin administration. Doxorubicin-induced a significant (P < 0.001) increase in the serum lactate dehydrogenase, cardiac thiobarbituric acid-reactive substance and catalase levels and a significant (P < 0.001) decrease in the cardiac glutathione and superoxide dismutase levels, which were significantly (P < 0.001) aggravated by diclofenac sodium treatment. Diclofenac sodium alone also showed a significant change in these parameters compared with the control. Ultrastructural studies showed that doxorubicin causes apoptosis in myocardium, which was characterized by condensation of chromatin network at the margins of nuclear membrane. Apoptosis induced by doxorubicin wa...Continue Reading

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Nov 13, 2013·Expert Opinion on Drug Metabolism & Toxicology·Bhulan Kumar SinghKrishna Kolappa Pillai
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