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Yazar "Alkis, Hilal" seçeneğine göre listele

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    Radioprotective effects of nigella sativa oil against oxidative stress in liver tissue of rats exposed to total head irradiation
    (Informa Healthcare, 2014) Cikman, Oztekin; Ozkan, Adile; Aras, Adem Bozkurt; Soylemez, Omer; Alkis, Hilal; Taysi, Seyithan; Karaayvaz, Muammer
    Objective: Many cancer patients treated with radiotherapy suffer severe side effects during and after their treatment. The aim of this study was to investigate the effects of irradiation and the addition of Nigella sativa oil (NSO) on the oxidant/antioxidant system in the liver tissue of irradiated rats. Methods: A total of 24 Sprague-Dawley rats were randomly distributed into three groups of equal numbers. The control group received neither NSO nor irradiation but received 1-ml saline orally. The irradiation group (IR) received total head 5 gray (Gy) of gamma irradiation as a single dose, plus 1-ml saline orally. The IR plus NSO group received both total head 5 Gy of gamma irradiation as a single dose and 1 g/kg/day NSO orally through an orogastric tube starting one hour before irradiation and continuing for 10 days. Results: While liver tissue total oxidant status (TOS), lipid hydroperoxide (LOOH) level, and oxidative stress index (OSI) were significantly increased in the IR group compared to the control group, total antioxidant status (TAS), sulfhydryl (-SH) levels, and PON activity were significantly decreased. Cp activity in the IR plus NSO and IR groups was higher than in the control group. ARYL activity in the IR plus NSO supplemented group was higher than that in other groups. Conclusions: NSO reduces oxidative stress markers and has antioxidant effects, which also augments the antioxidant capacity in the liver tissue of rats. © 2014 Informa Healthcare USA, Inc.

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