Abstract
Reactive oxygen species and cytokines have been implicated in the nephrotoxicity induced by doxorubicin. The goal of the present study was to determine protective effect of aminoguanidine on doxorubicin-induced nephrotoxicity in rats. Different groups of male Wistar rats received doxorubicin (67.75 mg/kg/i.p./2 days), aminoguanidine alone and aminoguanidine (200 and 400 mg/kg/i.p./30 days) prior to doxorubicin, respectively. Doxorubicin significantly increased serum creatinine (505%), blood urea nitrogen (333%), nitric oxide (406%), and plasma tumor necrosis factor-alpha (706%) as well as urinary albumin (452%) and N-acetyl-β-D-glucosaminidase (415%) compared to control. Moreover, renal glutathione (334%), superoxide dismutase (283%), and catalase (513%) were significantly reduced accompanied with elevation in renal malondialdehyde compared to control. Pretreatment with aminoguanidine mitigated such changes in all mentioned parameters. Histopathological changes showed that doxorubicin-caused significant structural damages to kidneys that were reduced with aminoguanidine. Results indicate that reactive oxygen species and cytokines are involved in doxorubicin-induced nephrotoxicity, which can be reduced by aminoguanidine.
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