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    Carbontetrachloride induced acute liver damage and protective effect of n-acetylcysteine on rats with regenerated and non-regenerated liver
    (Walter De Gruyter Gmbh, 2016) Bilgic, Sedat; Ozerol, Elif; Iraz, Mustafa; Sahin, Nurhan; Tanbek, Kevser; Cigli, Ahmet
    Objective: Our aim was to investigate 70% partial hepatectomy (PH) groups, compare with not subjected to PH groups after exposure to hepatotoxic agents for alterations in the protective effects of antioxidant agents and sensitivity of the liver. Accordingly, we aimed to investigate the toxicity of a hepatotoxic agent, carbon tetrachloride (CCl4), and protective effects of an antioxidant, N-acetylcysteine (NAC), in experimental animal model. Methods: 67 male Wistar Albino rats were divided into 2 main groups to total 9 subgroups: group 1, underwent PH; group 2, not subjected to PH. 0.5 ml/kg CCl4 and 50 mg/kg NAC was given intraperitoneally (i.p.) to the groups. On postoperative day 9, 70% PH was performed according to the method of Higgins and Anderson. Finally, all rats were humanely killed. Results: Catalase (CAT) and superoxide dismutase (SOD) activities were significantly lower in both groups when CCl4 was administered. NAC treatment was found to significantly increase these parameters (P<0.05). Malondialdehyde (MDA) and protein carbonyl (PC) levels were significantly greater in both groups when CCl4 was administered (P<0.05). NAC treatment was found to significantly reduce these parameters. Conclusion: These results indicated that CCl4 increased oxidation products, reduced liver enzymatic activity and reduced proliferation activity in both hepatectomised and nonhepatectomised liver. The liver injury of CCl4 and the protective effect of NAC was similarly in both main groups. Consequently, making PH may not create a negative effect and an additional health problems in liver. Thus, these results can positively affect the decisions of the healthy liver donors.
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    The protective effect of erdosteine on short-term global brain ischemia/reperfusion injury in rats
    (Pergamon-Elsevier Science Ltd, 2009) Ozerol, Elif; Bilgic, Sedat; Iraz, Mustafa; Cigli, Ahmet; Ilhan, Atilla; Akyol, Omer
    Experimental studies have demonstrated that free radicals play a major role on neuronal injury during ischemia/reperfusion (I/R) in rats. Erdosteine is a thioderivative endowed with mucokinetic, mucolytic and free-radical-scavenging properties. The aim of the present study was to investigate the effect of erdosteine treatment against short-term global brain ischemia/reperfusion injury in rats. The study was carried out on Wistar rats divided into four groups. (i) Control group, (ii) ischemia/reperfusion group, (iii) ischemia/reperfusion + erdosteine group, and (iv) erdosteine group. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities as well as thiobarbituric acid reactive substances (TBARSs) and nitric oxide (NO) levels were analysed in erythrocyte and plasma of rats. Plasma NO levels were significantly higher in the ischemia/reperfusion group than the other groups. The activities of SOD and GSH-Px were decreased, while TBARS levels increased in the ischemia/reperfusion group compared to other groups in both plasma and erythrocyte. The erythrocyte CAT activity was higher in erdosteine group and there was a statistically significant increase, when compared with the erdosteine plus ischemia/reperfusion group. By treating the rats with erdosteine, the depletion of endogenous antioxidant enzymes (SOD, CAT, GSH-Px) and increase of TBARS and NO levels were prevented. This study, therefore, suggests that erdosteine reduces parameters of oxidative stress is well supported by the data. (c) 2008 Elsevier Inc. All rights reserved.