淫羊藿苷对Tg2576小鼠学习记忆功能及海马神经细胞再生的影响

被引:27
作者
蔡锐 [1 ]
李菲 [1 ]
董红心 [1 ,2 ]
石京山 [1 ]
机构
[1] 遵义医学院药理学教研室基础药理省部共建教育部重点实验室
[2] 美国西北大学精神病学与行为科学实验室
关键词
淫羊藿苷; 学习与记忆; 神经再生; Tg2576小鼠; 淀粉样前体蛋白; 脑源性神经营养因子;
D O I
10.14169/j.cnki.zunyixuebao.2015.0084
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的观察淫羊藿苷对Tg2576小鼠学习记忆功能及海马齿状回神经细胞再生的作用。方法 Tg2576转基因小鼠及野生型小鼠分为4个组:野生型对照组、野生型+淫羊藿苷组、Tg2576对照组和Tg2576+淫羊藿苷组。给药组灌胃淫羊藿苷60 mg/kg/d,对照组灌胃同体积蒸馏水,每天1次,连续3个月。Morris水迷宫检测动物行为学改变;硫黄素S染色检测海马组织内老年斑;免疫组织化学法检测海马齿状回Brd U+细胞;Western blot检测海马组织淀粉样前体蛋白(APP)和脑源性神经营养因子(BDNF)的蛋白表达。结果淫羊藿苷明显缩短Tg2576小鼠水迷宫逃避潜伏期和搜索距离;明显减少海马组织内的老年斑;增多海马齿状回Brd U+细胞数量;降低海马组织APP高表达和改善BDNF低表达状态。而野生型小鼠给予淫羊藿苷3个月后,上述指标没有显著变化。结论淫羊藿苷改善Tg2576小鼠空间学习记忆功能,并促进海马齿状回神经细胞再生。
引用
收藏
页码:350 / 354
页数:5
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