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Protective effect of resveratrol against oxidative stress in middle cerebral artery occlusion model of stroke in rats.

机译:白藜芦醇对脑中风闭塞模型大鼠氧化应激的保护作用。

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摘要

Free radicals have been implicated in neuronal injury during ischemia reperfusion in stroke. Trans resveratrol, a potent antioxidant, polyphenolic compound found in grapes and wines has recently been shown to have neuroprotective activity against oxidative stress in in vitro studies. In the present study the effect of chronic treatment of trans resveratrol was evaluated in focal ischemia induced by middle cerebral artery [MCA] occlusion in rats. Male Wistar rats were pretreated with trans resveratrol 20 mg/kg i.p. for 21 days and were subjected to focal ischemia by occlusion of MCA using intraluminal thread. After two hours of MCA occlusion reperfusion was allowed by retracting the thread. Animals were assessed for motor performance after 24 hours and subsequently rats were sacrificed for estimation of markers of oxidative stress [malondialdehyde [MDA] and reduced glutathione] and for evaluation of volume of infarction. Control group received vehicle and similar protocol was followed. Significant motor impairment, with elevated levels of MDA and reduced glutathione was observed in the vehicle treated MCA occluded rats. Treatment with trans resveratrol prevented motor impairment, rise in levels of MDA and reduced glutathione and also significantly decreased the volume of infarct as compared to control. The study provides first evidence of effectiveness of trans resveratrol in focal ischemia most probably by virtue of its antioxidant property.
机译:自由基与中风缺血再灌注过程中的神经元损伤有关。在葡萄和葡萄酒中发现的反式白藜芦醇是一种有效的抗氧化剂,多酚化合物,最近在体外研究中显示出对氧化应激具有神经保护活性。在本研究中,在大鼠中脑动脉[MCA]闭塞所致的局灶性缺血中评估了反式白藜芦醇的慢性治疗效果。用反式白藜芦醇20 mg / kg i.p预处理雄性Wistar大鼠。持续21天,并通过腔内线通过MCA的闭塞进行局部缺血。 MCA闭塞两个小时后,通过缩回线允许再灌注。 24小时后评估动物的运动能力,随后处死大鼠以评估氧化应激的标志物[丙二醛[MDA]和还原型谷胱甘肽]并评估梗死体积。对照组接受车辆,并遵循类似的方案。在用媒介物处理的MCA阻塞的大鼠中观察到明显的运动障碍,MDA水平升高和谷胱甘肽减少。与对照相比,反式白藜芦醇治疗可防止运动障碍,MDA水平升高和谷胱甘肽减少,并且还显着减少了梗塞面积。该研究最有可能凭借其抗氧化特性提供了反式白藜芦醇在局灶性缺血中有效性的第一个证据。

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