中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (6): 8-352.

• 论著 • 上一篇    下一篇

IFN-γ联合TNF-α活化小鼠腹腔巨噬细胞抗不同毒力株弓形虫的作用

张爱民1,杨惠珍2,杨杨2,钱宗立2
  

  1. 上海铁道大学医学院寄生虫学教研室,上海 200331;上海第二医科大学寄生虫学教研室,上海200025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-12-30 发布日期:1999-12-30

ANTI-TOXOPLASMA EFFECT OF ACTIVATED MOUSE MACROPHAGES INDUCED BY INTERFERON-γ COMBINED WITH TNF-α*

ZHANG Aimin1;YANG Huizhen2;YANG Yang2;QIAN Zhongli2


  

  1. 1 Department of Parasitology;Medical School;Shanghai Tiedao University;Shanghai 200331 2 Department of Parasitology;Shanghai Second Medical University;Shanghai 200025
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-12-30 Published:1999-12-30

摘要:   目的: 比较IFN-γ联合TNF-α体外活化的小鼠腹腔巨噬细胞(MΦ) 对强毒株RH株及弱毒株Fukaya株的抗虫作用。方法: 体外以IFN-γ与TNF-α联合活化昆明系小鼠腹腔MΦ,观察其对入侵的RH株及Fukaya株速殖子的抗虫作用, 测定培养上清中NO的水平。结果: 在以IFN-γ100U+ TNF-α100U 活化的MΦ中, 入侵24h 后的RH株弓形虫速殖子被完全杀灭, 而Fukaya 株速殖子则缓慢增殖, 且前者培养上清中NO水平显著高于后者。结论:IFN-γ活化的MΦ对入侵的RH 株和Fukaya株速殖子的抗虫作用存在差异,这可能与NO的水平有关。

关键词: γ-干扰素, α-肿瘤坏死因子, 弓形虫, 巨噬细胞, 一氧化氮

Abstract:  AIM: To compare the inhibitory effect of the macrophages activated by IFN-γ combined with TNF-α against RH strain and Fukaya strain. METHODS: The average parasite proliferation rates of the two strains within the cytokine-activated MΦs were calculated at different times post-challenge, the nitric oxide (NO) levels in the medium supernatant were simultaneously determined. RESULTS: In the macrophages activated by 100 U each of IFN-γ and TNF-α, the invaded tachyzoites of RH strain were completely killed, while the invaded tachyzoites of Fukaya strain remained slow proliferation with significantly lower levels of NO detected at 24 h post challenge. CONCLUSION: The difference in the anti-Toxoplasma effect of the activated macrophages against RH and Fukaya strains might be attributed to the different amount of NO produced by the macrophages.\;

Key words: Interferon-γ, tumor necrosis factor-α, Toxoplasma gondii, marcophage, nitric oxide