中国寄生虫学与寄生虫病杂志 ›› 1996, Vol. 14 ›› Issue (1): 33-36.

• 论著 • 上一篇    下一篇

感染旋毛虫小鼠的细胞因子和T淋巴细胞亚群的动态变化

蓝雁1; 姜洪杰2; 卞英华2   

  1. 1 首都医科大学分子生物学教研室,北京100054
    2 首都医科大学寄生虫学教研室,北京100054
  • 出版日期:1996-02-28 发布日期:2017-01-02

OBSERVATION ON THE KINETIC CHANGES OF SPECIFIC HELPER T CELL SUBSETS OF MICE AFTER INFECTION WITH TRICHINELLA SPIRALIS

Lan Yan1; Jiang Hongjie2; Bian Yinghua2   

  1. 1 Department of Molecular biology,Capital University of Medical Sciences,Beijing 100054
    2 Department of Parasitology,Capital University of Medical Sciences,Beijing 100054
  • Online:1996-02-28 Published:2017-01-02

摘要: 目的:探讨感染旋毛虫小鼠的细胞免疫调节作用。方法:将小鼠分为重感染组、轻感染组及对照组,于感染后不同时间随机取脾细胞制备悬液,分别以旋毛虫抗原及ConA刺激后,检测白细胞介素IL-2及IL-6的活性、IgG抗体水平以及CD4、CD8T细胞含量。结果:感染早期脾细胞以IL-2的分泌为主,而感染晚期以IL-6为主,重感染组比轻感染组的IL-2与IL-6分泌多。感染后7d血清中出现IgG抗体,28-35d达高峰;感染后14-21d,CD4含量逐渐减少,21d后又逐渐上升,而CD8的含量却持续增多。结论:感染4wk后,IL-6的诱生水平持续增高,可能对旋毛虫病的获得性免疫起重要作用。IL-2活性与CD8T细胞百分率的增高,可能提示Th1产生的细胞因子促进IL-2活性与CD8T细胞活化。

关键词: 旋毛虫, IL-2, IL-6, IgG, CD4, CD8

Abstract: AIM: To explore the cellular immunoregulation in Trichinella spiralis infected C57BL/6J mice. METHOD: IL-2 and IL-6 levels induced by in vitro Trichinella antigen and ConA stimulated splenocytes from lightly and heavily infected C57BL/6J mice were determined by using the dependent cell line HT2 and 7TD1, IgG level was deterined by ELISA, and CD4+ and CD8+ levels were determined by flow cytometry. RESULTS: The production of IL-2 was predominant in the early phase after infection, while the production of IL-6 was mainly in the later phase. The levels of IL-2 and IL-6 secreted were higher in the heavily infected group than in the lightly infected group. IgG first appeared on d7 after infection and reached its peak through d28 to d35. From d14 to d21 the CD4+ T cells showed a decrease and then increased; while the CD8+ T cells increased gradually throughout the period after infection. CONCLUSION: The sustained increase in IL-6 4weeks after infection might play an important role in the acquired immunity of trichinosis. The coincidence of the increase in IL-2 and CD8+ suggests that the cytokines of Th1 might promote the activation of CD8+ T cells.

Key words: Trichinella spiralis, IL-2, IL- 6, IgG, CD4+;, CD8+