当归芍药散对多种记忆损伤动物模型的影响

Effect of Dangguishaoyao Powder on three models of memory dysfunction

目的 :观察当归芍药散 (DSP)对多种记忆损伤模型的影响。方法 :利用东莨菪碱、利血平及手术摘除卵巢的方法 ,分别造成不同的动物记忆损伤模型 ,采用避暗及水迷宫实验测定动物记忆功能 ,并测定大鼠不同脑区乙酰胆碱酯酶活性及小鼠子宫指数。结果 :DSP可明显延长东莨菪碱造型大鼠避暗潜伏期 ,降低其前脑、纹状体及边缘叶内的乙酰胆碱酯酶活性 ;明显延长手术摘除卵巢小鼠避暗潜伏期 ,升高其子宫指数 ;显著缩短利血平化小鼠水迷宫潜伏期。结论 :DSP可能通过降低乙酰胆碱酯酶活性 ,增强单胺能系统功能 ,及可能的雌激素样作用等环节 。

Objective: To observe the effect of DSP on three models of memory dysfunction,so as to provide evidence for its potential therapeuticaction for senile dementia.Methods: Three kinds of memory dysfunction are induced by scopolamine,reserpine and ovariectomy respectively,and memory ability is measured through step through and water maze tests.Meanwhile AchE activity in front cortex, hippocampus,striatum and limlic lobe of rats injected scopalamine is determined.Results: DSP can significantly prolong the step through latency,and decrease AchE activity in different parts of rats injeted scopalamine.And DSP can remarkably prolong latency,and increase uterus index of mice after ovariectomy.On the other hand,DSP can shorten water maze latency,enhance the correction percentage of mice injected reserpine.Conclusions:DSP can improve the memory dysfunction possibly through below pathways:(1)enhance the cholinergic system;(2)antagonize the decrease of monoamino transmitter;(3)has the possible estrogen like action.