褐藻多糖对小鼠淋巴细胞功能和细胞因子产生的影响

目的 :　研究褐藻多糖 ( BSP)对正常和免疫低下小鼠淋巴细胞功能及几种细胞因子产生的影响。方法 :　用环磷酰胺造成免疫功能低下小鼠模型 ,通过腹腔注射观察 BSP对正常和免疫低下小鼠淋巴细胞增殖反应、T细胞亚群及白介素 - 2 ( IL- 2 )产生的影响 ,并在体外观察 BSP对小鼠腹腔巨噬细胞分泌白介素 - 1 ( IL- 1 )和肿瘤坏死因子 ( TNF)的影响。结果 :　 ( 1 ) BSP1 0 0 mg/( kg·d)× 1 0 d能够明显提高正常和免疫低下小鼠脾脏 T、B细胞的增殖能力 ,显著促进脾细胞产生 IL- 2 ;使免疫低下小鼠胸腺、脾脏的 L3 T+ 4细胞数显著升高 ,L3 T+ 4/Lyt- 2 + 细胞比值增加。( 2 ) BSP在体外还能促进正常小鼠腹腔巨噬细胞产生 IL - 1和 TNF。结论 :　 BSP对正常和免疫低下小鼠的免疫功能具有促进作用。

EFFECTS OF BROWN SEAWEED POLYSACCHARIDE ON LYMPHOCYTE FUNCTION AND CYTOKINES PRODUCTION

Objective: To investigate the effects of BSP on lymphocyte function and cytokines production in normal and immunosuppressed mice.Methods: The lymphocyte proliferation response, T lymphocyte subpopulations and IL 2 production were measured after intraperitoneal injection of BSP in normal and immunosuppressed mice, and the activity of IL 1 and TNF secreted by mouse peritoneal macrophages were detected after BSP supplementation in vitro.Results: (1)BSP〔(100 mg/(kg·d)×10 d)〕markedly improved T,B lymphocyte proliferation responses and IL 2 production in normal and immunosuppressed mice, and significantly increased the number of L 3T + 4 cells in thymus and spleen of immunosuppressed mice, and the ratio of L 3T + 4/Lyt 2 + cells was also increased.(2)BSP distinctly enhanced the activity of IL 1 and TNF production by mouse peritoneal macrophages in vitro.Conclusion: BSP can improve the immunological function of normal and immunosuppressed mice.