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Chronic Non-Social Stress Affects Depressive Behaviors But Not Anxiety in Mice
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  • Chronic Non-Social Stress Affects Depressive Behaviors But Not Anxiety in Mice
저자명
SangHoYoon,Byung-HakKim,Sang-KyuYe,Myoung-HwanKim
간행물명
The Korean Journal of Physiology & PharmacologyKCI
권/호정보
2014년|18권 3호(통권105호)|pp.263-268 (6 pages)
발행정보
대한생리학회-대한약리학회|한국
파일정보
정기간행물|ENG|
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영문초록

The etiology of most psychiatric disorders is still incompletely understood. However, growing evidence suggests that stress is a potent environmental risk factor for depression and anxiety. In rodents, various stress paradigms have been developed, but psychosocial stress paradigms have received more attention than non-social stress paradigms because psychosocial stress is more prevalent in humans. Interestingly, some recent studies suggest that chronic psychosocial stress and social isolation affects mainly anxiety-related behaviors in mice. However, it is unclear whether chronic non-social stress induces both depression- and anxiety-related phenotypes or induces one specific phenotype in mice. In the present study, we examined the behavioral consequences of three chronic non-social stress paradigms: chronic predictable (restraint) stress (CPS), chronic unpredictable stress (CUS), and repeated corticosterone-HBC complex injection (RCI). Each of the three paradigms induced mild to severe depression/despair-like behaviors in mice and resulted in increased immobility in a tail suspension test. However, anxiety-related phenotypes, thigmotaxis and explorative behaviors, were not changed by the three paradigms. These results suggest that depression- and anxiety-related phenotypes can be dissociated in mouse stress models and that social and non-social stressors might affect brain circuits and behaviors differently.

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