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The antioxidant effects of Joongpoongtang 05 on brain injury after transient focal cerebral ischemia in rats

机译:Joongpoongtang 05对大鼠短暂性局灶性脑缺血后脑损伤的抗氧化作用

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摘要

Traditional Korean medicines with antioxidant properties are believed to have potential therapeutic effects against oxidative stress in cerebral ischemia. In this study, the antioxidant effects of Joongpoongtang 05 (JP05) were evaluated in rat middle cerebral artery occlusion (MCAO). Male Sprague-Dawley rats treated with JP05 (100 and 200 mg/kg body weight, p.o.) for 5 days showed a reduction in infarct sizes and a decrease in oxidants after MCAO. Furthermore, a significant inhibition of enzymatic antioxidants in the ischemic cerebral cortex was observed. Treatment with JP05 reversed the inhibition to normal levels. In the glutathione system, the reduced glutathione (GSH) level was decreased while oxidized glutathione (GSSG) was increased in MCAO rats. Treatment with JP05 increased the GSH/GSSG ratio and redox index by enhancing the synthesis of GSH from GSSG. Moreover, in vitro studies showed that JP05 has strong antioxidant activity in the Trolox equivalent antioxidant capacity, oxygen radical absorbance capacity and 1,1-diphenyl-2-picrylhydrazyl radical assays. The present findings suggestthat JP05 treatment can contribute to a protective effect on brain ischemia through antioxidant mechanisms.
机译:具有抗氧化特性的传统韩国药物被认为对脑缺血中的氧化应激具有潜在的治疗作用。在这项研究中,Joongpoongtang 05(JP05)在大鼠大脑中动脉闭塞(MCAO)中的抗氧化作用得以评估。 JP05(100和200 mg / kg体重,口服)连续5天处理的雄性Sprague-Dawley大鼠在MCAO后显示梗死面积减少,氧化剂减少。此外,观察到缺血性大脑皮层中酶抗氧化剂的显着抑制。 JP05处理可将抑制作用恢复至正常水平。在谷胱甘肽系统中,MCAO大鼠中还原型谷胱甘肽(GSH)水平降低,而氧化型谷胱甘肽(GSSG)升高。 JP05处理可通过增强GSSG的GSH合成来提高GSH / GSSG比率和氧化还原指数。此外,体外研究表明,JP05在Trolox等效抗氧化能力,氧自由基吸收能力和1,1-二苯基-2-吡啶并肼基自由基测定中具有很强的抗氧化活性。目前的发现表明JP05治疗可以通过抗氧化剂机制对脑缺血起到保护作用。

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