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首页> 外文期刊>Research in Pharmaceutical Sciences >Metformin attenuates oxidative stress and liver damage after bile duct ligation in rats
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Metformin attenuates oxidative stress and liver damage after bile duct ligation in rats

机译:二甲双胍减轻大鼠胆管结扎后的氧化应激和肝损伤

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The aim of the current study was to investigate the antioxidative effect of metformin (MTF) on bile duct ligation (BDL)-induced hepatic disorder and histological damage in rats. The rats were divided into 4 groups including sham control (SC), BDL alone (BDL surgery), MTF1 (BDL surgery and administration of 250 mg/kg of MFM) and MTF2 (BDL surgery and administration of 500 mg/kg of MTF). After BDL, the animals treated with MTF by gavage for 10 days. Hematoxylin and eosin staining, biochemical analysis and oxidative stress markers were assayed to determine histological alterations, liver functions, and oxidant/antioxidant status. Hepatotoxicity was verified by remarkable increase in plasma levels of aminotransferases and alkaline phosphatase activity and liver histology 10 days after the BDL surgery. Our finding showed that treatment with MTF markedly reduced plasma alkaline phosphatase and alleviated liver injury indices ( P ≤ 0.05). Furthermore, BDL caused a considerable increase in the protein carbonyl and malondialdehyde content ( P ≤ 0.05). However, MTF reduces oxidative stress by constraining the protein oxidation and lipid peroxidation, and increases antioxidant reserve by increasing the ferric reducing ability of plasma and reducing glutathione levels. MTF exerts antioxidative effects in the liver fibrosis and may represent a hepato-protective effect when given to rats with BDL-induced hepatic injury.
机译:本研究的目的是研究二甲双胍(MTF)对大鼠胆管结扎(BDL)所致肝病和组织学损害的抗氧化作用。将大鼠分为假手术对照组(SC),单独的BDL(BDL手术),MTF1(BDL手术和250 mg / kg MFM给药)和MTF2(BDL手术和500 mg / kg MTF给药)4组。 。 BDL后,通过管饲法用MTF处理动物10天。对苏木精和曙红染色,生化分析和氧化应激标记物进行了测定,以确定组织学改变,肝功能和氧化剂/抗氧化剂状态。 BDL手术后10天,血浆氨基转移酶和碱性磷酸酶活性的显着增加以及肝脏组织学证实了肝毒性。我们的发现表明,MTF治疗可显着降低血浆碱性磷酸酶并减轻肝损伤指数(P≤0.05)。此外,BDL引起蛋白质羰基和丙二醛含量的显着增加(P≤0.05)。但是,MTF通过限制蛋白质的氧化和脂质过氧化作用来降低氧化应激,并通过增加血浆的三价铁还原能力和降低谷胱甘肽水平来增加抗氧化剂储备。当给予BDL诱导的肝损伤大鼠时,MTF在肝纤维化中发挥抗氧化作用,并且可能代表肝保护作用。

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