J4

• 基础医学 • 上一篇    下一篇

山楂叶总黄酮对大鼠脑缺血再灌注后细胞凋亡的保护作用

纪影实1,曲极冰1,李 红1,赵中华2,杨世杰1   

  1. (1.吉林大学基础医学院药理学教研室,吉林 长春 130021;2.内蒙古民族大学医学院药理学教研室, 内蒙古 通辽 028000)
  • 收稿日期:2007-09-18 修回日期:1900-01-01 出版日期:2008-07-28 发布日期:2008-07-28
  • 通讯作者: 杨世杰

Protective effect of FMCL on apoptosis after cerebral ischemia-reperfusion in rats

JI Ying-shi1,QU Ji-bing1,LI Hong1,ZHAO Zhong-hua2,YANG Shi-jie1   

  1. (1.Department of Pharmacology,School of Basic Medical Sciences,Jilin University,Changchun 130021,China; 2. Department of Pharmacology,School of Basic Medical Sciences,Mongolia National University,Tongliao 028000,China)
  • Received:2007-09-18 Revised:1900-01-01 Online:2008-07-28 Published:2008-07-28
  • Contact: YANG Shi-jie

摘要: 目的:探讨山楂叶总黄酮(FMCL)对脑缺血再灌注(CIR)损伤的保护作用及其可能机制。方法:将大鼠随机分为假手术组、模型组、阳性药组(舒血宁1.8 mg•kg-1)及山楂叶总黄酮高、中、低(100 、30和10 mg•kg-1)剂量组,采用线栓法制备大鼠局灶性脑缺血再灌注损伤模型;流式细胞仪检测神经细胞凋亡率;原位末端标记(TUNEL)法测定神经细胞凋亡;免疫组化染色观察凋亡相关蛋白Fas、细胞色素C(CytC)蛋白表达的变化。结果:与模型组比较,山楂叶总黄酮高剂量组TUNEL染色阳性细胞数明显减少(P<0.01),凋亡率明显下降(P<0.01);与模型组比较,山楂叶总黄酮高和中剂量组CytC蛋白表达明显降低(P<0.05或P<0.01),Fas蛋白表达无明显变化。结论:山楂叶总黄酮可抑制脑缺血再灌注后神经细胞凋亡,其机制可能与抑制线粒体Cyt C通路的凋亡有关。

关键词: 脑缺血再灌注, 细胞凋亡

Abstract: To investigate the protective effects of flavone mixture of crataegus leaves(FMCL)on cerebral ischemia-reperfusion(CIR) injury in rats and its mechanism. Methods The rats were divided into control group,model group,Shu Xue Ning group,100 mg•kg-1 FMCL group,30 mg•kg-1 FMCL group and 10 mg•kg-1 FMCL group. The CIR model was built through thread block.The apoptotic rate was analyzed by flow cytometry and TUNEL method.The protein expressions of cytochrome C (CytC) and Fas were detected by immunohistochemistry. Results Compared with model group,the number of TUNEL positive cells and apoptotic rate were significantly decreased in 100 mg•kg-1 FMCL group(P<0.01) and the protein expressions of CytC were also significantly reduced(P<0.05 or P<0.01)in 100 and 30 mg•kg-1 FMCL groups,but the expression of Fas protein did not change significantly(P<0.05) Conclusion FMCL has a protective effect on CIR injury.Its mechanism may be related to down-regulate the protein expression of CytC and then inhibit the mitochondrial pathway apoptosis.

Key words: cerebral ischemia-reperfusion, apoptosis

中图分类号: 

  • R743.31