【摘要】 目的探讨脑心通对大鼠局灶性脑缺血损伤后脑组织补体C3表达的影响。方法参照Longa等方法制成大鼠局灶性大脑中动脉阻断(MCAO)模型,将大鼠分为假手术组、生理盐水组、大剂量脑心通组、中剂量脑心通组、小剂量脑心通组,分别给予不同剂量药物,于术后6h、24h、48h、72h和7d进行神经功能评分(NDS),处死后取脑组织观察脑含水量的变化,病理切片HE染色观察组织病理学改变,免疫组织化学的方法测定补体C3的动态变化。结果脑心通治疗组的神经功能评分均降低,病理损伤均减轻,脑心通大、中剂量组治疗后脑水肿明显减轻(P<0.05),补体C3的表达明显减少(P<0.05)。结论脑心通可能通过减轻脑水肿,降低脑内补体C3的表达,对大鼠缺血脑组织损伤产生保护作用。更多还原

【Abstract】 Objective To investigate the effect of Naoxintong （NXT） on complement 3 expression of focal cerebral ischemia （FCI） in rats.Methods The FCI model with thread embolism of middle cerebral artery occlusion（MCAO）in rats was made.The rats were randomly divided into five groups,sham operation group, normal saline group,high dose treatment group,middle dose treatment group,low dose treatment group.At the time of 6 h,24 h,48 h,72 h and 7 d after MCAO,the neurological deficit score （NDS） was assessed.The changes of brain water content were measured.The histopathologic changes were observed by the HE staining method. The changes of complement 3（C₃） expression were detected by immunohistochemistry method.Results The NDS increased and the histopathologic damages were alleviated in the NXT treatment groups.Brain edema was reduced significantly （P<0.05） and the expression of C₃ decreased significantly （P<0.05） in the middle group and the high group.Conclusion The result showed that there are significant protective effects by alleviating brain edema and reducing the expression of C₃ for FCI in rats treated by NXT.更多还原