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The adverse effects of anticancer drugs can prompt patients to end their treatment despite the efficacy. Cisplatin is a platinum-based molecule widely used to treat various forms of cancer, but frequent and long-term use of cisplatin is limited due to severe nephrotoxicity. In the present study, we investigated the protective effect and mechanism of tetrahydrocurcumin on cisplatin-induced kidney damage, oxidative stress, and inflammation to evaluate its possible use in renal damage. Cisplatin-induced LLC-PK1 renal cell damage was significantly reduced by tetrahydrocurcumin treatment. Additionally, the protective effect of tetrahydrocurcumin on cisplatin-induced oxidative renal damage was investigated in rats. Tetrahydrocurcumin was orally administered every day at a dose of 80 mg/kg bodyweight for ten days, and a single dose of cisplatin was administered intraperitoneally (7.5 mg/kg body weight) in 0.9% saline on day four. The creatinine clearance levels, which were markers of renal dysfunction, in cisplatin-treated rats were recovered nearly back to normal levels after administration of tetrahydrocurcumin. Moreover, tetrahydrocurcumin exhibited protective effects against cisplatin-induced oxidative renal damage in rats by inhibiting cyclooxygenase-2 and caspase-3 activation. These results collectively provide therapeutic evidence that tetrahydrocurcumin ameliorates renal damage by regulating inflammation and apoptosis. [ABSTRACT FROM AUTHOR]