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Effect of aminoguanidine on sciatic functional index, oxidative stress, and rate of apoptosis in an experimental rat model of ischemia–reperfusion injury

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This study was conducted to investigate the potential protective effects of aminoguanidine (AG) on sciatic functional index (SFI), oxidative stress status, and apoptosis index using a rat model of experimental sciatic nerve ischemia–reperfusion injury (I/R). Treatment groups received 150 mg AG/kg body mass, 24 h after the induction of ischemia. After reperfusion for 2, 4, 7, 14, and 28 days, we evaluated measured SFI, plasma antioxidant enzymes, total antioxidant capacity (TAC), malondialdehyde (MDA), and index of apoptosis. SFI was significantly improved on the 7th and 14th day of reperfusion in the AG-treated groups. AG treatment resulted in the significant reduction of MDA levels on the 7th and 14th day of reperfusion. TAC was only increased after 7 days of reperfusion compared with the untreated group. SOD activity was decreased in both the untreated and AG-treated groups by comparison with the control, but did not show a significant change. GPx activity decreased only after 7 days of reperfusion. The maximal rate of apoptosis occurred on the 7th day of reperfusion. Treatment with AG significantly reduced this enhancement. AG exhibits positive effects against sciatic nerve I/R injury, possibly in part because of the protective effects of AG against apoptosis and I/R-induced oxidative stress.
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Keywords: aminoguanidine; indice fonctionnel sciatique; ischemia–reperfusion; ischémie–reperfusion; oxidative stress; rat; sciatic functional index; stress oxydant

Document Type: Research Article

Affiliations: 1: Department of Physiology & Pharmacology, School of Medicine, Kramandan, Zanjan University of Medical Sciences, 4513956111, Islamic Republic of Iran. 2: Department of Physiology, School of Medicine, Bandar-Abbas, Hormozgan University of Medical Sciences, Islamic Republic of Iran.

Publication date: January 1, 2014

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