健脑合剂改善小鼠学习记忆作用及其机理初探

目的 :观察中药健脑合剂对记忆障碍小鼠学习记忆的影响 ,并初步探讨其作用机理。方法 :以跳台法、避暗法与电迷宫试验检测由东莨菪碱、亚硝酸钠及乙醇所致记忆障碍小鼠及D 半乳糖与三氯化铝模型小鼠的学习记忆能力 ,测定大脑胆碱酯酶活性、LPO含量与全血SOD活性。结果 :健脑合剂 1 4g·kg-1和 2 8g·kg-1可明显改善由东莨菪缄、亚硝酸钠及乙醇所致记忆获得、记忆巩固及记忆再现障碍 ,增强D 半乳糖模型小鼠与三氯化铝小鼠的被动学习能力 ,提高D 半乳糖所致衰老小鼠全血SOD活性及抑制脑LPO生成 ,显著降低痴呆小鼠脑胆碱酯酶活性。结论 :健脑合剂能提高记忆障碍模型小鼠及三氯化铝与D 半乳糖模型小鼠学习记忆功能 ,其机制可能与影响中枢M胆碱能系统和改善体内自由基平衡有关

Effect and mechanism of JianNao mixture on function of learning and memory in mice

AIM: To observe the effect and mechanism of Chinese traditional medicine JianNao mixture on function of learning and memory in memory disorder mice. METHODS: Step down test, step through test and "Y" maze test were used to examine the function of learning and memory in memory disorder mice induced by scopolamine, sodium nitrite and alcohol, and in dementia model mice induced by D galactose and aluminum chloride. Cholinesterase activity in brain, LPO and SOD in blood were measured. RESULTS: JianNao mixture could promote both the learning and memory function in impaired acquisition, consolidation and retrieval of memory in memory disorder mice induced by scopolamine, sodium nitrite and alcohol, respectively. It also could reduce wrong times and prolong latency in mice's step through test, depress cholinesterase activity of brain in aluminum chloride model mice, reduce wrong times in mice's "Y" maze test, enhance SOD activity of whole blood and decrease LPO content of brain in D galactose model mice. CONCLUSION: JianNao mixture can improve the function of learning and memory in memory disorder mice. The mechanism may be due to improve the cholinergic function and the balance of free radical in vivo.