›› 1997, Vol. 17 ›› Issue (4): 203-206.

• 论文 • 上一篇    下一篇

巨噬细胞吞噬卡氏肺孢子虫的体外实验研究

  

  1. 上海医科大学附属中山医院肺科,上海 200032
  • 收稿日期:1997-08-12 出版日期:1997-01-25 发布日期:2013-03-19
  • 基金资助:

    上海市卫生局基金(131944Y2)和上海医科大学基金

Study on Ingestion Ability of Macrophage for Pneumocystis Carinii in Vitro

  1. Department of Pulmonary Medicine, Zhongshan Hospital, Shanghai Medical University, Shanghai 200032
  • Received:1997-08-12 Online:1997-01-25 Published:2013-03-19

摘要: 应用支气管肺泡灌洗法从诱导成功的卡氏肺孢子虫(PC)肺炎大鼠中分离PC虫体后,经抗大鼠白细胞共同抗原单克隆抗体(AntiCLAAb)处理使PC高度纯化,然后观察PC与小鼠和大鼠的巨噬细胞在体外的相互作用。结果显示,腹腔巨噬细胞(PMφ)和肺泡巨噬细胞(AMφ)能吞噬并降解PC虫体,PMφ和AMφ与PC相互作用后每100个Mφ吞噬成熟PC包囊数分别为5.80±0.70和4.70±0.51(P>0.05,作用30min时)、11.33±0.73和11.50±0.76(P>0.05,作用60min时)。经过地塞米松预处理与未经处理的AMφ,每100个吞噬成熟PC包囊数分别为4.75±0.36和5.42±0.29(30min,P>0.05)、10.08±0.39和12.25±0.28(60min,P<0.05)。这说明糖皮质激素可抑制AMφ的吞噬功能,推测糖皮质激素诱导大鼠产生PC肺炎可能与其抑制AMφ的吞噬功能有关。结果提示:巨噬细胞在防御PC致病方面可能起重要作用。

关键词: 巨噬细胞, 体外培养, 吞噬, 氏肺孢子虫, 大鼠, 小鼠

Abstract: The Pneumocystis carinii (PC) were isolated through bronchial alveolar lavage from PC pneumonia rats prepared by induction with prednisolone, and it was treated and purified with anti - rat - common leukocyte antigen monocolonal antibody. The ingesting ability of macrophage for PC and the effect of glucocorticoid were studied in vitro. The results showed that the PC could be ingested and degraded by peritoneal macrophage (PMφ) and alveolar macrophage (AMφ). The difference of uptake of mature cyst forms (MCFs) of PC between PMφ and AMφ was not significant (P>0.05). The ingesting ability of AMφ for PC in dexamethasone pretreatment group was inhibited after 60 min of phagocytosis in comparison with non ” pretreatment group (the uptake of MCFs of PC:10.08 士0.3/100Mφ vs 12. 25土0. 28/100Mφ,P<0.05). The results suggested that the induction of PC pneumoni-a in rats with the glucocorticoid may be related to the inhibition of macrophage ingestion a-bility, and that macrophage may play an important role in the protection of the pathogenesis of PC.

Key words: "Macrophage, Ingestion, Pneumocystis carinii, In vitro, Glucocorticoid, Rat, Mouse "