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Abstract Title:

Urolithin A mitigates cisplatin-induced nephrotoxicity by inhibiting renal inflammation and apoptosis in an experimental rat model.

Abstract Source:

J Pharmacol Exp Ther. 2017 Aug 7. Epub 2017 Aug 7. PMID: 28784820

Abstract Author(s):

Melissa Guada, Raghu Ganugula, Manicka Vadhanam, Ravi Kumar Majeti

Article Affiliation:

Melissa Guada

Abstract:

Cumulative kidney toxicity associated with cisplatin is severe and there is no clear consensus on the therapeutic management of the same. The pathogenesis involves activation of inflammatory and apoptotic pathways, therefore regulating these pathways offers protection. Given the anti-inflammatory and antioxidant effects of urolithin A, a gut microbial metabolite of ellagic acid, our aim was to explore the potential of urolithin A for prevention of cisplatin-induced nephrotoxicity in an experimental rat model. For this purpose, animals received a single intraperitoneal dose of cisplatin (5 mg/kg body weight). Six hours prior to cisplatin administration, rats were orally treated with either ellagic acid or urolithin A (50 mg/kg body weight), followed by a daily dose of these compounds during the next 5 days. At the end, plasma and kidneys were collected for analysis. Cisplatin-induced kidney damage was revealed by a significant rise in the plasma creatinine levels accompanied by significant morphological changes in tubules, T cell Ig and mucin domain-containing protein-1, ionized calcium-binding adapter molecule 1, as well as a marked increase in the number of apoptotic cells localized in tubules. Cisplatin also reduced nitric oxide synthase 3 and nuclear factor kappa-light-chain-enhancer of activated B cells resulting in regulation of various inflammatory cytokines. Urolithin A effectively attenuated cisplatin-induced kidney damage and showed significantly greater effect than its precursor ellagic acid on preserving the normal kidney architecture by downregulating the pro-inflammatory cytokines. In summary, urolithin A mitigates cisplatin-induced nephrotoxicity in rats by modulation of the inflammatory cascade and inhibition of the pro-apoptotic pathway.

Study Type : Animal Study

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