慢性强迫游泳应激大鼠内侧前额皮质磷酸化细胞外信号转导激酶1/2的变化

被引:4
作者
王海涛
徐爱军
李冉
高俊玲
机构
[1] 华北煤炭医学院组织学与胚胎学教研室
关键词
强迫游泳; 抑郁; 内侧前额皮质; 细胞外信号调节激酶; 行为学; 免疫组织化学; 免疫印迹法; 大鼠;
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
目的探讨慢性强迫游泳应激模型大鼠内侧前额皮质(mPFC)磷酸化细胞外信号转导激酶1/2(pERK1/2)的表达变化。方法将30只成年健康雄性Wistar大鼠随机分为对照组(15只)和慢性强迫游泳应激组(15只)。慢性强迫游泳组连续给予28d的强迫游泳,制备慢性强迫游泳应激模型;通过糖水偏好实验、开场实验和Morris水迷宫检测大鼠抑郁行为学的改变;采用免疫组织化学、免疫印迹法检测mPFC中pERK1/2的表达变化。结果慢性强迫游泳应激组糖水消耗量和糖水偏好百分比分别为(4.114±0.644)%、(86.610±4.450)%,对照组为(8.157±1.105)%、(94.930±2.893)%,差异有统计学意义(P<0.01);开场实验中慢性强迫游泳应激组和对照组的直立次数分别为1.75±0.96、6.00±0.82,差异有统计学意义(P<0.05);水迷宫实验逃避潜伏期分别为(20.762±3.236)s、(5.632±1.065)s,差异有统计学意义(P<0.01);免疫组织化学分析显示,对照组和模型组pERK1/2阳性细胞阳性信号吸光度值分别为47.594±5.355和110.810±10.643,差异有统计学意义(P<0.01);免疫印迹法分析结果显示,对照组和模型组pERK/2分别占总ERK1/2的0.216±0.029和0.870±0.066,差异有统计学意义(P<0.01)。结论慢性强迫游泳应激能诱发大鼠抑郁症状,促进mPFCpERK1/2表达。
引用
收藏
页码:510 / 513
页数:4
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