中风康对局灶性脑缺血大鼠脑组织AQP-4 mRNA表达的影响

目的探讨中风康对局灶性脑缺血大鼠脑组织水通道蛋白mRNA(AQP-4mRNA)表达的影响.方法采用线栓法复制局灶性脑缺血大鼠模型,于脑缺血12,24,48,72,96 h观察模型大鼠AQP-4 mRNA表达的动态变化,并在脑缺血48 h观察中风康对AQP-4 mRNA表达及脑水肿的影响.结果与假手术组比较,局灶性脑缺血12h,模型组脑组织AQP-4 mRNA表达开始增加,至72 h达到高峰(P＜0.01),与48 h模型组比较,各治疗组脑组织AQP-4 mRNA表达和脑组织含水量均有不同程度降低(P＜0.05或P＜0.01).结论中风康可降低脑梗塞大鼠脑组织AQP-4 mRNA表达,减轻脑水肿.

Effect of Zhongfengkang on the Expression of AQP - 4mRNA in Brain of Focal Cerebral Ischemia Rats

Objective To observe the effect of Zhongfengkang on the expression of Aquaporin 4 mRNA(AQP-4mRNA) in brain of focal cerebral ischemia rats. Methods The rat model of focal cerebral ischemia was established by inserting nylon thread.The dynamic changes of AQP-4 mRNA expression in the model group at 12th,24th,48th,72nd and 96th hour after cerebral ischemia were examined and the effect of Zhongfengkang on AQP-4 mRNA expression and cerebral edema at 48 th hour after cerebral ischemia was observed.Results At 12th hour after cerebral ischemia,the expression of AQP-4mRNA in the model group increased compared with the sham-operation group,and it arrived to the peak at 72th hour(P<0.01);Compared with model group at 48th,the expression of AQP-4 mRNA and the brain edema in each treatment groups were decreased(P<0.05 or P<0.01).Conclusion By decreasing the expression of AQP-4 mRNA in brain of focal cerebral ischemia rats,Zhongfengkang could protect blood brain barrier and reduce cerebral edema.