Method Twenty-four adult female Sprague-dawley rats were averagely divided into 3 groups matched for body mass: control group ( CON), tail suspension group ( TS) and tail suspension group associated with choline chloride ( TS+ Cch). 方法按体重配对原则将24只雌性SD大鼠分为对照组(CON)、尾吊组(TS)与尾吊给药组(TS+Cch),每组8只。