终纹
基底外侧杏仁核
边缘下皮质
伏隔核
隔核
慢性应激
糖皮质激素
压力(语言学)
扁桃形结构
神经科学
心理学
内分泌学
医学
前额叶皮质
中枢神经系统
认知
哲学
语言学
作者
Eunhwa Lee,Jin‐Young Park,H. Kwon,Pyung Lim Han
出处
期刊:Research Square - Research Square
日期:2020-10-20
标识
DOI:10.21203/rs.3.rs-90131/v1
摘要
Abstract Chronic stress produces adaptive changes in the brain via the cumulative action of glucocorticoids, which causes psychiatric illnesses such as depression. Here we show that a behavioral method implementing weak stress does not strengthen but resolves existing stress gains. Chronic stress produces persistent depressive behaviors in mice, and repeated daily treatment with 5-min restraint produces antidepressive effects. Repeated treatment with low-dose glucocorticoids mimics the anti-depressive effects of weak stress. Repeated weak stress or low-dose glucocorticoid treatment distinctively activates the prelimbic cortex (PL), and reverses the stress-induced altered gene expression profiles. Chemogenetic inhibition of PL outputs projecting to the nucleus accumbens, basolateral amygdala, or bed nucleus of the stria terminalis (BNST) dissipates antidepressive effects of weak stress, but only the PL-to-BNST circuit produces changes in dysregulated glucocorticoid release. Our results suggest that behavioral appraisal by implementing weak stress can resolve adaptively altered stress gains and rectify stress-induced depressive behaviors.
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