脑卒中后抑郁大鼠额前皮质脑源性神经营养因子和酪氨酸激酶受体B蛋白的表达变化

被引:18
作者
李云 [1 ]
郭旭 [1 ]
李永刚 [2 ]
机构
[1] 大理, 大理学院附属医院神经内科
[2] 大理, 大理学院附属医院临床医学院
关键词
脑卒中后抑郁; 额前皮质; 脑源性神经营养因子; 酪氨酸激酶受体B; 蛋白;
D O I
暂无
中图分类号
R74 [神经病学与精神病学];
学科分类号
100204 [神经病学];
摘要
目的探讨脑卒中后抑郁(PSD)大鼠额前皮质脑源性神经营养因子(BDNF)和其高亲和力受体酪氨酸激酶B(TrkB)蛋白的表达变化。方法利用线栓法制备局灶性脑缺血大鼠模型、加以慢性不可预见的中等应激刺激和孤养方法造成PSD动物模型, 并与正常对照组、脑卒中组及抑郁组作比较。每组6只动物, 应用免疫组化检测各组大鼠造模后第29天大脑额前皮质BDNF和TrkB阳性细胞数的表达变化。结果 PSD组额前皮质BDNF阳性细胞数最少[(21.00±12.41)个/视野];但各组相比差异无统计学意义(P>0.05)。PSD组大鼠额前皮质TrkB阳性细胞数最少[(20.78±7.20)个/视野], 抑郁组次之[(21.00±5.61)个/视野], 脑卒中组最多[(31.67±7.38)个/视野];单因素方差分析结果显示PSD组和抑郁组与脑卒中组比较, 均差异有统计学意义(P<0.05)。结论 PSD大鼠额前皮质TrkB蛋白的表达减少可能与PSD发病机制直接相关。
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