重复经颅磁刺激对血管性痴呆大鼠认知功能影响的机制

被引:11
作者
王菲 [1 ]
耿鑫 [2 ]
陶华英 [3 ]
赵鹏 [1 ]
程焱 [4 ]
机构
[1] 天津医科大学总医院神经内科
[2] 天津医科大学生物化学与分子生物学教研室
[3] 天津医科大学总医院神经病学研究所
[4] 天津医科大学总医院神经内科神经病学研究所
关键词
血管性痴呆; 重复经颅磁刺激; 突触素; 脑源性神经营养因子; N-甲基-D-天冬氨酸受体1;
D O I
暂无
中图分类号
R749.13 [];
学科分类号
摘要
目的研究重复经颅磁刺激对血管性痴呆(VD)大鼠认知功能康复的影响,探讨其康复治疗的分子学机制。方法将36只Wistar大鼠随机分为正常对照组、VD模型组、VD低频组和VD高频组,VD低频组和VD高频组大鼠接受的刺激频率分别为0.5 Hz和5 Hz。采用Morris水迷宫测试方法检测各组大鼠认知功能,透射电镜下观察各组大鼠海马CA1区超微结构变化。应用实时定量逆转录多聚酶链反应(RT-PCR)、Western blot方法分别检测海马突触素、脑源性神经营养因子、N-甲基-D-天冬氨酸受体1的mRNA及蛋白表达。结果大鼠Morris水迷宫测试结果提示2个治疗组认知功能有改善,各项指标均优于VD模型组(P<0.05);透射电镜观察结果从形态学上显示2个治疗组突触界面曲率、突触后致密物质厚度、突触活性带长度均较VD模型组增加(P<0.05)。2个治疗组各检测因子表达量也明显高于VD模型组(P<0.05)。结论重复经颅磁刺激对VD致认知功能障碍有治疗作用,其机制可能与其促进海马突触素、脑源性神经营养因子、N-甲基-D-天冬氨酸受体1的表达有关。
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