模拟晕船大鼠晕船行为学指标的筛选及适应规律的观察

目的:筛选大鼠晕船行为学指标,探讨大鼠晕船适应时间及规律.方法:运用Crampton旋转刺激模型,对SD大鼠进行重复刺激,实时观察晕船刺激过程中尿液、粪便排泄量及刺激后自发活动的变化;采用抗晕药物干预法检验各行为学指标的特异性.结果:与正常对照组相比,晕船刺激第1天刺激组大鼠粪便量显著增加(P<0.05),自发活动显著减少(P<0.01);随着刺激天数的增加,刺激组粪便量、自发活动均逐渐恢复,且与刺激天数间存在一定相关性(P<0.01),并分别于第9天和第7天下降至正常对照水平;用药组以东莨菪碱(0.5、1 mg/kg)灌胃后再进行旋转刺激,各行为学指标与正常对照组相比均无统计学差异.结论:旋转刺激时的排便量和刺激后的自发活动量可有效判断大鼠晕动病,连续刺激9 d左右后大鼠可达到晕船适应.

Screen of seasickness behavior indices of simulated seasickness in rats and observation of adaptability rules

Objective:To screen for seasickness behavior parameters in rats with simulated seasickness,so as to investigate the rule of seasickness adaptation in rats.Methods:SD rats were stimulated daily by Crampton model.Urine volume (UV) and amount of fecal particle (FP) were observed during stimulation,and the spontaneous activity (SA) was also determined immediately after stimulation.Interventional experiments were performed using anti-motion sickness drugs to examine the specificity of the indices.Results:On the ...