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作 者:梅玲华 李俊[2,3] 马志林 朱伟[2] 陈筱[2] 陈兰英[2,3]
机构地区:[1]江西汇仁药业有限公司,南昌330000 [2]中药固体制剂制造技术国家工程研究中心,南昌330006 [3]江西中医学院,南昌330006
出 处:《中药药理与临床》2014年第1期109-112,共4页Pharmacology and Clinics of Chinese Materia Medica
基 金:国家科技重大专项:重大新药创制(课题编号:2011ZX09101-003-02)
摘 要:目的:探讨颐神养脑胶囊对血管性痴呆大鼠(VD)的认知功能的影响及其作用机制。方法:采用双侧颈动脉永久性结扎(间隔7天分2次结扎)复制血管性痴呆模型,以Morris水迷宫法进行学习记忆能力测试;并测定脑组织乙酰胆碱酯酶(AchE)、乙酰胆碱转移酶(CHAT)、五羟色胺(5-HT)、超氧化物歧化酶(SOD)和丙二醛(MDA)含量;免疫组化染色法观察海马区Caspase-3、bax蛋白的阳性表达。结果:480mg/kg的颐神养脑胶囊能够显著提高血管性痴呆大鼠学习记忆能力,显著降低血管性痴呆大鼠脑组织AchE和MDA含量,升高脑组织CHAT、5-HT及SOD含量,显著减少血管性痴呆大鼠海马区Bax蛋白和Caspase-3蛋白阳性表达,减少海马区神经细胞凋亡。结论:颐神养脑胶囊能够显著改善VD大鼠的学习记忆功能,其作用机制可能与其增加脑内Ach和5-HT含量、减轻脑组织脂质过氧化损伤、抑制神经细胞凋亡有关。Objictiv: To investigate the effect of YSYN on cognition of model rats with vasular dementia and its mechanism. Methods: Vasular denentia(VD) rats model was established by permanent bilateral common carotid artery occlusion(2VO) (in two times operation in 7 days).Use the methods of morris water maze to test the abilities of learning-merory;the level of brain homegenates Acetylcholinesterase( AchE), Cholin acetyltrans-Ferase(CHAT) ,5-hydroxytryptamine(5-HT),Superoxidedismutase(SOD) and Malondialdehyde(MDA) were assayed,the ex- pression of Caspase-3 protein and Bax protein were detected by immunohistochemistry. Results: The YSYN at the dose of 480mg/kg could significantly improved the abilities of learning-memory in VD rats( P 〈 0.05 ) ;descreased the level of brain homegenates Ache and MDA in VD rats ( P 〈 0.05 - 0.01 ) ; increased the level of brain homegenates CHAT,5-HT and SOD in VD rats ( P 〈 0.05 - 0.01 ) ; decreased the expression of Caspase-3 protein and Bax protein on hippocampus in VD rats. Conclusion:The YSYN could significantly improved the abilities of learning-memory in VD rats,its mechanism may be related to increasing the level of Ach and 5-HT, inhibition of lipid peroxidation in brain tissue,inhibition of neuronal apoptosis.
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