中国科学院心理研究所机构知识库

"抑郁症细胞因子假说"的提出为抑郁障碍的病因学研究提供了一个新的方向,为了探讨脂多糖(lipopo-lysaccharide,LPS)诱导的免疫激活与抑郁性行为产生之间的关系,本研究采用50只SD大鼠随机分为五组LPS400,LPS200,LPS50,LPS10,LPS0,分别于实验期第0天和第3天注入LPS400μg/kg,200μg/kg,50μg/kg,10μg/kg和生理盐水。以糖精水偏爱,旷场行为和高架十字迷宫评定大鼠LPS注射后2h,24h,48h的行为变化。结果显示一次LPS注射后2h,LPS50,LPS200,LPS400组动物与生理盐水组动物相比较,其糖精水偏爱分数(p<0.01),旷场中的水平活动距离(p<0.01)和直立行为(p<0.01)以及高架十字迷宫中的闭合臂进入次数(p<0.01)和开放臂进入次数显著下降(p<0.01);重复注射后2hLPS注射组动物的闭合臂进入次数显著降低(p<0.01);但LPS10组与生理盐水组动物在行为上没有差异,50μg/kg,200μg/kg和400μg/kg剂量的各组之间没有差异。LPS注射后24h和48h以及重复注射后大鼠的行为没有发现显著变化。...

The "cytokine theory of depression" indicated that cytokines induced by immunity activity are not only immunity mediators but also play an important role in the mechanism of depressive-like behaviors. The administration of lipopolysaccharide (LPS), which is a product of the cell wall of Gram-negative bacteria, is known to activate immune functions and induce the release of several cytokines both in the periphery, and the brain such as frontal cortex, hippocampus, and hypothalamus that are considered to be t...