TNF-α, IL-6 and IL-10 expressions, responsible for disparity in action of curcumin against cisplatin-induced nephrotoxicity in rats
- 3 March 2017
- journal article
- research article
- Published by Springer Science and Business Media LLC in Molecular and Cellular Biochemistry
- Vol. 431 (1-2), 113-122
- https://doi.org/10.1007/s11010-017-2981-5
Abstract
Cisplatin is a regularly employed effective chemotherapeutic agent for the treatment of many types of cancer. The main drawback of cisplatin treatment is kidney toxicity which affects 25–35% of treated patients. Many mechanisms are believed to be involved in this kidney damage, but inflammation plays a significant role in this event. Curcumin is a polyphenol and has antioxidant and anti-inflammatory effects. The purpose of this study was to determine the protective effects of curcumin on cisplatin-induced nephrotoxicity. Female rats were randomly divided into 5 groups: control, curcumin, cisplatin, curcumin plus cisplatin (pre-treatment group) and cisplatin plus curcumin (post-treatment group). Rats were given cisplatin (7.5 mg/kg body weight) with or without curcumin treatment (120 mg/kg body weight). Blood urea nitrogen (BUN), creatinine, albumin, tumour necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, IL-8, IL-10 expressions and histological changes were determined on the 5th day after cisplatin injection. Acute kidney damage was evident by increased BUN and creatinine levels. In addition, cisplatin showed a marked pro-inflammatory response as revealed by a significant increase in the tissue levels of TNF-α, IL-6, IL-8 and decrease in the IL-10 level. Pre-treatment of curcumin reduced cisplatin-induced nephrotoxicity which was clearly evident from the reduced BUN, creatinine, TNF-α, IL-6 and IL-8 levels and increased albumin and IL-10 levels. Additionally, these findings were also supported by histopathology of the kidneys. In contrast, post-treatment of curcumin failed to cut down the expression of inflammatory markers substantially and also neglected to increase the expression of IL-10. The disparity in the action of curcumin after pre- and post-treatment with cisplatin-induced nephrotoxicity was due to the inability of post-treatment to reduce TNF-α & IL-6, besides to show a concurrent rise in IL-10 expression in renal tissues.Keywords
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