Sildenafil attenuates renal injury in an experimental model of rat cisplatin-induced nephrotoxicity - PubMed (original) (raw)

. 2009 Mar 29;257(3):137-43.

doi: 10.1016/j.tox.2008.12.017. Epub 2008 Dec 30.

Affiliations

• PMID: 19152827
• DOI: 10.1016/j.tox.2008.12.017

Sildenafil attenuates renal injury in an experimental model of rat cisplatin-induced nephrotoxicity

Kang Wook Lee et al. Toxicology. 2009.

Abstract

Sildenafil is the first commercially available selective inhibitor of phosphodiesterase-5 (PDE5) and is widely used for the treatment of erectile dysfunction. In recent years, investigations of the role of sildenafil in cardioprotection in animal models have received considerable interest. We evaluated whether sildenafil can attenuate cisplatin-induced nephrotoxicity in a rat experimental model. Male Sprague-Dawley rats were divided into five groups: control rats, sildenafil-control rats, cisplatin-injected rats (5 mg kg(-1) IP, single dose), sildenafil-treated cisplatin-injected rats (0.4 mg kg(-1), daily), and sildenafil+NG-nitro-l-arginine methyl ester hydrochloride (l-NAME)-treated rats. The molecular, functional, and structural parameters of the kidney were measured. At 96 h after cisplatin injection, serum levels of creatinine were lower in rats treated with both sildenafil+cisplatin compared with rats treated with cisplatin alone, and renal iNOS and eNOS expression was significantly higher in sildenafil+cisplatin-treated rats compared with rats treated with cisplatin alone (all P<0.05). Renal Bax gene and protein expression was significantly higher in cisplatin-treated rats compared with control rats, and sildenafil treatment significantly reduced the levels of Bax and increased the renal Bax/Bcl-2 ratio (P<0.05). Sildenafil treatment also reduced renal caspase-3 activation and TUNEL-positive apoptotic cells. These data suggest that sildenafil attenuates experimental cisplatin-induced nephrotoxicity by preventing apoptosis.

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