旋毛虫感染过程中小鼠T淋巴细胞亚群的变化

CHANGES IN POPULATIONS OF T LYMPHOCYTES IN MICE INFECTED WITH TRICHINELLA SPIRALIS

应用酸性α醋酸萘酯酶(ANAE)胞浆标记法观察实验感染旋毛虫小鼠外周血T淋巴细胞及其亚群的变化。结果表明感染后d_3淋巴细胞和T淋巴细胞绝对数平行地增多,于d_(14)达高峰,d_(60)仍高于正常水平。而斑块颗粒型细胞(辅助性T细胞,T_h)和分散颗粒型细胞(抑制性T细胞,T_a)呈反向变化,前者减少,后者增多,T_h/T_a比值降低,表明旋毛虫感染过程中宿主免疫功能受抑制。

Acid a-naphthyl acetate esterase (ANAE), a cytoplasmic marker was used to identify the T lymphocytes and their subpopulations in peripheral blood of mice experimemally infected with T. spiralis. The results showed that the absolute number of lymphocytes and T lymphocytes increased in parallel on d, after infection, reachiug the peak on d14, and remaining above normal level on d60. The spotted granular ANAE positive cells (Helper T cells, Th) were decreasing and the scattered granular ANAE positive cells (suppressor T cells, Ts) were increasing, leading to a lowering of the Th/Ts ratio which was most marked on d14 and returned to normal on d60. The depres-sion of host immune function during T. spiralis infection might be related to the lowering of Th/Ts ratio.