D-半乳糖致衰老模型大鼠的学习记忆和行为学观察及中药干预作用

目的观察D-半乳糖致衰老模型大鼠学习记忆能力和行为学情况,并探讨中药的干预作用。方法大鼠每日一次颈背部皮下注射5%D-半乳糖100 mg/kg。诱导大鼠衰老模型,连续7周,观察衰老模型大鼠的自主活动次数、空间记忆能力、主动回避遭受电击能力、探究活动等行为学表现和学习记忆能力,并用抗衰老片与首乌延寿片进行干预,观察中药的干预作用。结果皮下注射D-半乳糖造模后,衰老模型大鼠自主活动次数显著减少(P0.05,P0.01),水迷宫试验探索路径长度和搜台潜伏期显著延长(P0.05,P0.01),旷场试验移动路程长度和直立次数显著减少(P0.01),穿梭回避试验平均潜伏期、进入错误区时间显著增加(P0.05,P0.01)。给予抗衰老片与首乌延寿片干预后,衰老大鼠的自主活动次数显著增加(P0.01),水迷宫试验探索路径长度和搜台潜伏期显著缩短(P0.01),旷场试验移动路程长度和直立次数显著增加(P0.01),穿梭回避试验平均潜伏期、进入错误区时间显著减少(P0.05,P0.01)。结论D-半乳糖致衰老模型大鼠的自主活动次数减少,对新环境探索能力下降,学习记忆力下降;抗衰老片与首乌延寿片等中药可有效增强衰老模型大鼠的行为活动,提高衰老模型大鼠的学习记忆能力。

Research on Learning Memory Ability and Behavior of Ageing Model Rat Induced by D-galactose and Interventional Effect of Traditional Chinese Medicine

Objective To observe the memory ability and the behavior activities of ageing model rats induced by D-galactose and the interventional effect of traditional Chinese medicine.Methods The ageing model rats were injected with 5% D-galactose subcutaneously at a dose of 100 mg /kg everyday and lasted for 7 weeks.During the experiment,locomotor activity was tested.Morris water maze was used to test inquiry and search memory,shuttle box was employed to measure the avoidance ability and open-field test was also ado...