Effects of Tail-suspension,Noise and Combination of Two Stresses on Immune Function of Rats / 航天医学与医学工程

Objective To investigate the effect of tail-suspension,noise stress and combination of them on immune function in rats.Methods The rats were divided into four different groups,A: control;B: noise stress(2 h);C: tail-suspension(30?,21 d);D: tail-suspension added noise stress.The body weight,thymus weight and spleen weight,circulating leukocytes and its distribution,T lymphocyte subpopulations(with flow cytometry) and NO level in serum(with Griess method) of rats were determined after exposed to 21 d tail-suspension,2 h noise stress and combination of them.Results Compared with group A,the body weight were significantly decreased(P