中国寄生虫学与寄生虫病杂志 ›› 1997, Vol. 15 ›› Issue (6): 388-391.

• 实验报道 • 上一篇    下一篇

肿瘤坏死因子增强巨噬细胞杀伤约氏疟原虫的观察

张海燕1; 李慧珠2; 牛宇欣3; 王凤芸2   

  1. 1 首都医科大学细胞学教研室; 2 首都医科大学寄生虫学教研室; 3 首都医科大学细胞遗传学教研室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-12-28 发布日期:1997-12-28

TUMOR NECROSISFACTOR ENHANCESMACROPHAGE- MEDIATED KILLING OF PLASMODIUM YOELII

Zhang Haiyan1; Li Huizhu2; Niu Yuxin3; Wang Fengyun2   

  1. 1 Departmentof Cytobiology, Capital University of Medical sciences, Beijing 100054 2 Department of parasitology, Capital University of Medical sciences, Beijing 1000543 Department of biology, Capital University of Medical sciences, Beijing 100054
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-12-28 Published:1997-12-28

摘要: 目的 :观察肿瘤坏死因子 ( TNF)对巨噬细胞 ( MΦ)表面受体表达及吞噬功能的影响 ,探讨 TNF体内杀伤疟原虫机制。方法 :以感染约氏疟原虫的 BAL B/ c小鼠为动物模型 ,将不同浓度的 TNF与小鼠腹腔 MΦ体外培养 5h后 ,加入感染红细胞 ,观察 MΦ对感染红细胞的吞噬率 ,将 TNF作用后的 MΦ用 m PAP超微半定量法测定 Fc受体 ,YC花环法测定 C3b受体。结果 :TNF能够增加 MΦ 对感染红细胞的吞噬率 ,其作用与 TNF剂量呈正相关。TNF可增加正常及感染鼠MΦ 表面 Fc受体和 C3b受体的表达。结论 :TNF在感染小鼠体内可能调节 MΦ 表面受体的表达并增加其吞噬疟原虫的功能

关键词: 肿瘤坏死因子, 巨噬细胞, 约氏疟原虫, Fc受体, C3b受体, 吞噬率

Abstract: AIM:To observe the effects of tumor necrosis factor (TNF) on the receptor expression and the capacity
for phagocytosing Plasmodium yoelii by peritoneal macrophages. METHODS:The Fc receptor and C3b receptor were
determined by m PAPmethod and YC rosette assay,respectively. RESULTS:After the pretreatment of macrophages with
different concentrations of TNF in vitro for 5 h, TNF showed a significant increase both in the percentage of
phagocytosis of P.yoelii parasitized erythrocytes by macrophages, and in the expression of Fc receptor and the rate of YC rosette formation on macrophage. CONCLUSION: TNF might increase the expressions of Fc and C3b receptors, which lead to increased phagocytosis of parasites by macrophage.

Key words: Tumor necrosis factor, macrophage, Plasmodium yoelii, Fc receptor, C3b receptor, phagocytosi