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  • Title: [Immune response in Pneumocystis carinii pneumonia in rats].
    Author: Liu B, He LX, Qu JM, Hu BJ, Wang BQ, Li XY.
    Journal: Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi; 2000; 18(1):40-2. PubMed ID: 12567474.
    Abstract:
    OBJECTIVE: To study the inflammatory immune response to Pneumocystis canii pneumonia(PCP) in rats induced by glucocorticoid(GC). METHODS: The model of PCP was set up by injecting GC subcutanously to SD rats. Lymphocyte proportion in peripheral blood, CD4+/CD8+ T cell ratio of PBL and lymphocyte proportion in the BALF were measured. The levels of sIL-2R and TNF-alpha in the BALF were detected. RESULTS: 1. After the rats were immunospressed, the lymphocyte proportion in the peripheral blood and CD4+/CD8+ ratio of PBL, and the lymphocyte proportion in the BALF were decreased, and the levels of sIL-2R, TNF-alpha in BALF were reduced. 2. The lowest levels of TNF-alpha in BALF and CD4+/CD8+ T cells of PBL were observed in PCP group; 3. The lymphocyte proportion in the BALF was significantly higher in PCP group than in PC negative group. CONCLUSION: The reduction in the level of TNF-alpha and CD4+/CD8+ T cell ratio in rats treated with GC might result in PCP infection under immunosuppressive condition.
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