小鼠海马齿状回过表达18ku转位蛋白对焦虑和抑郁样行为的调节作用

被引:4
作者
李雷 [1 ,2 ,3 ]
蒋湘云 [3 ]
孙树峥 [2 ]
郭颖 [3 ]
龚洁 [3 ]
张黎明 [3 ]
王恒林 [2 ]
李云峰 [3 ]
机构
[1] 河北北方学院研究生部
[2] 解放军第医院麻醉科
[3] 军事医学科学院毒物药物研究所
关键词
海马齿状回; 18 ku转位蛋白; 焦虑; 抑郁; 四氢孕酮;
D O I
暂无
中图分类号
R749.4 [情感性精神病];
学科分类号
100204 [神经病学];
摘要
目的研究小鼠海马齿状回18 ku转位蛋白(TSPO)过表达对焦虑、抑郁样行为的影响,为TSPO成为药物潜在新靶标提供实验依据。方法成年雄性ICR小鼠海马齿状回每侧微注射携带TSPO基因的慢病毒(LV)(2×108TU·m L-1),以致TSPO过表达(LV-TSPO)。第12,14和16天进行小鼠高架十字迷宫、爬梯实验、明暗箱实验检测焦虑样行为,第18和21天进行小鼠悬尾和强迫游泳行为绝望模型检测抑郁样行为;行为学实验结束,采用Western蛋白印迹法和ELISA方法分别检测海马注射孔周围3 mm组织内TSPO蛋白水平和四氢孕酮含量。结果小鼠海马齿状回微注射慢病毒后12 d,小鼠跨格数和站立次数无明显改变;与LV组相比,LV-TSPO组显著增加小鼠进入中心区时间(14±4 vs 25±12,P<0.05);显著增加小鼠进入开臂次数和开臂时间的百分比〔(13±8)%vs(26±18)%,P<0.05;(6±6)%vs(27±6)%,P<0.05)〕;显著减少小鼠站立次数(21±7 vs 12±5,P<0.05);显著增加小鼠进入明箱的次数和时间〔18±8 vs(26±7)s,P<0.05;72±36 vs(191±90)s,P<0.05〕,提示海马齿状回TSPO过表达小鼠表现出显著的抗焦虑样行为作用;与LV组相比,LV-TSPO组明显减少小鼠在悬尾实验和强迫游泳实验中的不动时间〔(94±33 vs(36±20)s,P<0.01;137±36 vs(90±37)s,P<0.05〕,提示海马齿状回TSPO过表达小鼠表现出显著的抗抑郁样作用。与LV组相比,小鼠海马齿状回TSPO过表达可导致海马注射孔周围3 mm组织四氢孕酮含量显著增加(P<0.05)。结论小鼠海马齿状回过表达TSPO具有显著的抗焦虑、抗抑郁样的行为学效应,且TSPO介导的四氢孕酮水平升高可能是其重要机制。
引用
收藏
页码:35 / 42
页数:8
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