回药失羂剌知丸抗大鼠脑缺血再灌注后细胞凋亡的实验研究
2016-04-19左艳丽贾孟辉于凌志王佩佩刘丽苏丹李占涛
左艳丽 贾孟辉 于凌志 王佩佩 刘丽 苏丹 李占涛



【摘 要】 目的:观察回药失荅剌知丸对大鼠脑缺血再灌注后脑组织中Fas及FasL表达的影响,探讨失荅剌知丸治疗脑缺血性疾病的机制。方法:SD雄性大鼠随机分为假手术组、模型组、金纳多组、失荅剌知丸低浓度组、失荅剌知丸中浓度组、失荅剌知丸高浓度组,局灶性脑缺血再灌注模型制备成功后分别于12h、24h、72h取材,采用干湿重法测脑含水量,免疫荧光法观察Fas阳性细胞表达量,TUNEL和免疫组化法观察神经细胞凋亡情况及FasL表达的变化。结果:与假手术组相比,缺血再灌注损伤后脑含水量、神经细胞凋亡数量及Fas、FasL的表达明显增高(P<0.01,P<0.05);与模型组比较,用药组各时段脑含水量、神经细胞凋亡数量及Fas、FasL的表达均减弱(P<0.05),以失荅剌知丸高浓度组的表达减弱显著(P<0.01)。结论:失荅剌知丸能够有效减轻脑组织水肿,抑制Fas、FasL的表达,其发挥神经保护的作用机制可能与抑制神经细胞凋亡有关。
【关键词】 失荅剌知丸;脑缺血;Fas;FasL
【中图分类号】R743 【文献标志码】 A 【文章编号】1007-8517(2016)05-0073-04
Abstract:Objective: To observe the effect of expression of Fas and FasL in the hippocampus of ischemia-reperfusion injury rats brain tissue by taking Shida Lazhi Wan, and to explore Shida Lazhi Wan mechanism for the treatment of cerebral ischemic diseases. Methods: SD male rats were randomly divided into 6 groups: sham group,the ischemia reperfusion model group (hereinafter referred to as the model group),JinNaDuo group,Shida Lazhi Wan low concentration group, Shidalazhiwan medium concentration group,Shida Lazhi Wan high concentration group, After focal cerebral ischemia models were established,at 12h、24h、72h,neurons apoptosis,wet and dry weight measured brain water content, immunofluo-rescence techniques to measure Fas expression,TUNEL and immunohistochemical method to observe neuronal apoptosis and the change of FasL expression. Result: To compared with the sham operation group,after ischemia-reperfusion injury , brain water、number of nerve cell apoptosis and Fas、FasL expression were significantly increased(P<0.01, P<0.05);compared with the model group, every treatment groups brain water number、nerve cell apoptosis and Fas、FasL expression were recede (P<0.05),especially Shida Lazhi Wan high concentration group Reduce significantly (P<0.01). Conclusion:Shida Lazhi Wan can ?reduce brain water effectively, inhibition of Fas and FasL express, its nerve protection mechanism may be related to inhibition of neural cell apoptosis.
Keywords:Shida Lazhi Wan;ischemia reperfusion;Fas;FasL
随着人口老龄化进程的加速,高血压、冠心病等相关危险因素的增加,脑血管疾病的发病率也逐年攀升,对人类的生命健康和生活质量造成了严重的威胁。其中,缺血性脑血管疾病最为常见,约占脑血管疾病的80%左右[1]。目前,临床上最常用的是在有限的时间内进行溶栓等治疗以达到恢复脑血管血液供应的目的,但有可能造成脑组织的进一步损伤,即脑缺血再灌注损伤。脑缺血再灌注损伤机制庞杂,相互交联,有研究表明,细胞凋亡在其发病进程中担任着至关重要的角色。细胞凋亡多发生于脑缺血急性期,主要出现在缺血半暗带区和对缺血缺氧敏感的海马、齿状回和大脑皮质[2],神经细胞凋亡数量的多少决定着脑组织梗死体积的大小。……
