链霉菌多糖的免疫学活性研究

目的 研究链霉菌多糖(SMP)对正常小鼠和免疫抑制模型小鼠的免疫调节活性.方法 通过混合淋巴细胞培养方法检测SMP对正常小鼠脾脏淋巴细胞增殖作用的影响,用酸性α-醋酸萘酯酶染色法观察免疫抑制小鼠模型外周血中T淋巴细胞的变化,以及流式细胞仪检测免疫抑制模型小鼠脾细胞中T细胞亚群Lyt2 和L3T4 的比例变化.结果 SMP可以明显促进混合淋巴细胞的增殖,并对免疫抑制模型小鼠T淋巴细胞的抑制有保护作用,还可以调节模型小鼠CD4 /CD8 的比值至正常水平.结论 SMP具有调节免疫功能的作用.

Immunological activity of Streptomyces polysaccharide in normal and immunosuppressed mice

OBJECTIVE: To investigate the immunological activity of Streptomyces polysaccharide (SMP) on normal and immunosuppressed mice. METHODS: The effect of SMP on the proliferating activity of normal mouse splenocytes was tested in the mixed lymphocyte culture, and the changes of peripheral blood T lymphocytes were evaluated with acid a-naphthyl acetate esterase (ANAE) method. The ratio of Lyt2(+) and L3T4(+) T cell subsets was measured by flow cytometry. RESULTS: SMP stimulated obvious proliferation of mixed lymphocytes, showed protective effects on T lymphocyte and increased the ratio of Lyt2(+) and L3T4(+) cell subsets to nearly normal level in immunosuppressed mice. CONCLUSIONS: SMP can regulate the immune function in mice.