摘要
目的:探讨参附注射液对局灶性脑缺血大鼠血脑屏障(blood brain barrier,BBB)的影响及其机制。方法:利用线栓法制作脑缺血/再灌注模型,再灌注24h后进行神经功能评分,应用伊文思蓝法(Evans Blue,EB)观察对照组与参附注射液治疗组(SFI)BBB通透性,采用干湿重法比较脑含水量、TTC法比较脑梗死面积。蛋白印迹法检测金属硫蛋白酶9(matrix metalloproteinase-9,MMP-9)及细胞外调节蛋白激酶(Extracellular regulated protein kinases,ERK)的表达。结果:参附注射液治疗组的血脑屏障通透性、脑含水量、脑梗塞体积、神经功能缺损程度均比对照组明显降低(P<0.05)。和对照组相比,SFI组的MMP-9及磷酸化ERK的蛋白表达明显降低。结论:参附注射液对大鼠脑缺血模型的血脑屏障具有保护作用,其作用机制与抑制MMP-9及ERK信号通路相关。
Objective : To investigate the effect of Shenfu injection on focal cerebral isehemic stroke blood - brain barrier (blood brain barrier, BBB) in rats and its mechanism. Methods: An ischemic stroke model was generated by 90 rain occlusion of right middle cerebral artery. After 24h reperfusion, neurological score was evaluated, the cerebral infarct volumes were quantified by 2,3,4 -triphenytetrazolium -chloride (TTC), brain water content was determined by dry/ wet weight method, and damage to the blood - brain barrier (BBB) was determined by Evans blue extravasation. Metal- lothionein protease (the matrix metalloproteinase -9, MMP -9) and extraeellular regulated protein kinase (Extracellu- lar regulated protein kinases, ERK) expression were evaluated by Western blot. Results : Shenfu Injection - treatment group (SFI) significantly reduced infarct volume, brain edema, blood - brain barrier permeability, the degree of neuro- logical deficits (P 〈 0.05 ). And compared with the control group, the protein expression of MMP - 9 and phosphoryla- tion of ERK were significantly reduced in the SFI group. Conclusion : Shenfu injection plays a neuroprotective role in the blood- brain barrier in the experimental cerebral ischemia model. The mechanism is associated with the inhibition of MMP -9 and ERK signaling pathway.
出处
《中医药学报》
CAS
2012年第5期76-79,共4页
Acta Chinese Medicine and Pharmacology
基金
国家自然科学基金项目(81171241)
北京市优秀人才D类资助(2011D005018000007)
关键词
参附注射液
缺血性脑卒中
血脑屏障
金属硫蛋白酶9
细胞外调节蛋白激酶
Shenfu injection
Ischemic stroke
blood - brain barrier
Matrix metalloproteinase - 9
Extracellular regulatedprotein kinases