人精浆免疫抑制作用对小鼠巨噬细胞的影响

Immunosuppressive effects of human semen on macrophage of mouse

SF_1是正常人精浆经Sephadex G100分离所得的第一组分。采用体内及体外途径,将SF_1作用于Balb/c小鼠巨噬细胞,实验证明SF_1对小鼠两种来源的巨噬细胞—腹腔巨噬细胞(PEC—Mφ)及骨髓细胞经体外培养衍生的巨噬细胞(BM—Mφ)均有明显的抑制作用,表现为Mφ吞噬抗体致敏羊红细胞(EA)的吞噬率及吞噬指数(PI)均明显低于对照组(P<0.01),並且抑制程度随SF_1浓度升高而逐渐明显;SF_1作用后的Mφ表面Fc受体及C_3b受体也明显受抑,表现为EA—花环及Yc—花环形成率降低(P<0.01)。此外,SF_1作用后的Mφ还表现表面皱褶减少及胞内空泡增加等超微结构的形态学改变。

This paper reports the functional changes of macrophage under the effect of SF1, the first fraction of human semen separated by Sephadex G-100. Two kinds of Balb/c mouse macrophage, i. e. peri toneal macrophage (PEC-Mφ) and the bone marrow derived macrophage (BM-Mφ), were treated by SF1 in vivo (i.p. ) and in vitro. It has been proved that SF1 is a potent immunosuppressive fraction; (1) As compared with the control, the phagocytosis of SF1 treated macrophage to SRBC coated with antibody declines significantly in terms of phagocytosis rate and index (p<0.01), which is shown to be dose-dependent, (2) Both the Fc receptor (EA-rosette forming assay) and the C3b receptor (YC-rosette forming assay) of Mφ are significantly suppressed under the action of SF1 (P<0.01). The morphological changes of macrophage treated with SF1 are briefly described.