【摘要】 目的:观察夏天无注射液(Corydalis decumbens Pers In jection,CDPI)对血管性痴呆(vascu lar dem entia,VD)大鼠学习记忆能力和海马血管生成素-1(angiopoietin-1,Ang-1)表达的影响,探讨其防治VD的作用机制。方法:采用永久性结扎双侧颈总动脉的方法制作VD大鼠模型,Morris水迷宫试验观察CDPI对大鼠空间辨别学习记忆能力的影响,HE染色观察海马的组织病理学变化,免疫组化染色,图像分析半定量测定Ang-1的表达。结果:CDPI 2 mg/kg、5 mg/kg治疗VD大鼠1个月和2个月后,显著缩短逃避潜伏期和搜索距离;治疗2个月后,明显增加海马内Ang-1的表达。结论:CDPI可明显改善VD大鼠的学习记忆能力,其作用机制可能与增加海马内Ang-1的表达有关。更多还原

【Abstract】 AIM: To observe the effects of Corydalis decumbens Pers Injection(CDPI) on the learning,memory and Ang-1 expression of hippocampus in vascular dementia rats,and to explore the protective mechanisms. METHOD: The VD model rat model was established by the ligation of both carotids of the rat.Morris water-maze was used to examine the ability of spatial learning and memory of VD model rats.Hippocampal histopathological change was observed through optical microscope after being stained with Hematoxylin-eosin(HE).The semi quantitative analysis of Ang-1 expression in hippocampus was analysed by BI2000 image analysis system after immunohistochemistry staining. RESULTS: In the place naviga test,the mean escape latency significantly shorted and the explporing distance obviously decreased in CDPI 2 mg/kg、5 mg/kg groups after one month and two months compared with model group.After two months with CDPI treatment,Ang-1 exprssion of hippocampus increased in VD rats. CONCLUSIONS: CDPI can improve the ability of spatial learning and memory.The mechanism may be related to increasing expression of Ang-1 in hippocampus.更多还原