Abstract Title:

Allicin ameliorates doxorubicin-induced cardiotoxicity in rats via suppression of oxidative stress, inflammation and apoptosis.

Abstract Source:

Cancer Chemother Pharmacol. 2017 Aug 7. Epub 2017 Aug 7. PMID: 28785995

Abstract Author(s):

Mohamed M Abdel-Daim, Omnia E Kilany, Hesham A Khalifa, Amal A M Ahmed

Article Affiliation:

Mohamed M Abdel-Daim


PURPOSE: Doxorubicin (DOX) is a highly active antineoplastic agent; however, its clinical use is limited due to associated cardiotoxicity. This study was performed to evaluate the beneficial effects of allicin, a dietary garlic active constituent against DOX-induced cardiotoxicity.

METHODS: Forty male Swiss albino mice were divided into five groups, which received normal saline, oral allicin (20 mg kg(-1) once daily), intraperitoneal DOX (on the 7, 9 and 11th day of the experiment), or DOX plus once daily allicin at 10 or 20 mg kg(-1). Sera were collected for evaluation of cardiac injury markers and proinflammatory cytokines. Additionally, heart tissue spacemen were harvested for determination of oxidative stress markers, as well as for histopathological examination and immunohistochemical analysis.

RESULTS: DOX administration induced significant (p < 0.05) reductions in cardiac tissue level of reduced glutathione and activities of antioxidant enzymes (catalase, superoxide dismutase, and glutathione peroxidase). Moreover, it induced significant (p < 0.05) elevations in cardiac tissue concentrations of nitric oxide and malondialdehyde as well as serum levels of cardiac injury biomarkers (lactate dehydrogenase, creatine kinase, and creatine kinase-MB) and proinflammatory cytokines (interleukin-1β, and tumor necrosis factor-alpha). The histopathological examination showed necrotic and degenerative changes in the cardiac tissue, while immunohistochemical analysis revealed marked myocardial expression of activated caspase-3 and cyclooxygenase-2, following DOX adminstration. Allicin pretreatment significantly improved (p < 0.05) all examined parameters, and restored the cardiac architecture.

CONCLUSION: The current study demonstrated that allicin effectively mitigates cardiac oxidative damage, apoptosis and inflammation, induced by acute DOX intoxication. Therefore, allicin could be a promising cytoprotective agent against DOX cardiotoxicity.

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