Abstract
Antioxidants are widely used in animal models to prevent renal injury after ischemia/reperfusion, but it is unknown if the benefits of antioxidants are additive. In this study, we aimed to investigate the protective effects of N-acetylcysteine plus deferoxamine in an animal model of kidney ischemia/reperfusion injury. Bilateral kidney ischemia was mastintained for 45 minutes. N-acetylcysteine, deferoxamine or both were administered into the aorta above the renal arteries immediately prior to induction of ischemia. Five rats from each group were sacrificed 1, 6 or 12 hours after reperfusion for the determination of blood creatinine, kidney oxidative damage parameters and myeloperoxidase activity. The combination of N-acetylcysteine and deferoxamine, but not their isolated use, prevented the increase in creatinine after ischemia/reperfusion. This prevention was followed by a consistent decrease in myeloperoxidase activity and oxidative damage parameters both in the kidney cortex and medulla. Treatment with N-acetylcysteine and deferoxamine was superior to the isolated use of either compound in an animal model of kidney ischemia/reperfusion.
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