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Curcumin Supplementation Alleviates Polymyxin E-Induced Nephrotoxicity

Overview
Journal J Exp Pharmacol
Publisher Dove Medical Press
Date 2020 Jun 26
PMID 32581601
Citations 5
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Abstract

Background: The last-line agent for gram-negative bacteria that have developed resistance towards commonly used antibiotics is polymyxin E (PolyE). The renal toxicity attributed to this agent limits its use, proper dosing, and eventually its clinical efficacy. Although the exact mechanism of PolyE-induced nephrotoxicity is not obvious, some investigations suggest the role of oxidative stress and its associated events in this complication. Curcumin (CUR) is a potent antioxidant molecule. The aim of the current investigation was the evaluation of the potential nephroprotective properties of CUR in PolyE-treated mice.

Materials And Methods: Mice were randomly allocated into five groups (n = 8 per group). PolyE (15 mg/kg/day, i.v, for 7 days) alone or in combination with CUR (10, 100 and 200 mg/kg, i.p) were administered to mice. Renal injury biomarkers, in addition to markers of oxidative stress and kidney histopathological alterations, were evaluated.

Results: Plasma creatinine (Cr) and blood urine nitrogen (BUN) significantly raised in PolyE group. Oxidative stress biomarkers consisting of reactive oxygen species (ROS) and lipid peroxidation (LPO) also increased, and concomitantly GSH and antioxidant capacity of renal cells significantly decreased following the use of PolyE. Interstitial nephritis, tissue necrosis, and glomerular atrophy were all induced by the use of PolyE in the mice kidney. CUR (10, 100, and 200 mg/kg, i.p) treatment alleviated PolyE-induced oxidative stress and histopathological alterations in the kidney tissue significantly.

Conclusion: According to the results of this study, CUR has a protective role against renal toxicity induced by PolyE. Hence, more research is necessary until this compound could be clinically applicable to alleviate PolyE-induced renal injury.

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