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Inhibition of intracellular growth of Histoplasma capsulatum yeast cells by cytokine-activated human monocytes and macrophages.

机译:细胞因子激活的人单核细胞和巨噬细胞对荚膜胞浆酵母细胞细胞内生长的抑制作用。

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Human monocytes/macrophages (M psi) were infected with Histoplasma capsulatum yeast cells, and intracellular growth was quantified after 24 h of incubation in medium alone or in medium containing cytokines. Yeast cells multiplied within freshly isolated monocytes, cultured M psi, and alveolar M psi with intracellular generation times of 14.2 +/- 1.4, 18.5 +/- 2.1, and 19.9 +/- 1.9 h (mean +/- standard error of the mean), respectively. Monocytes and M psi inhibited the intracellular growth of yeast cells in response to cytokine supernatant; maximum inhibition was obtained when cytokines were added to cell monolayers immediately after infection. Opsonization of yeast cells in normal serum or in H. capsulatum-immune serum did not affect the intracellular generation time of yeast cells in either control M psi or cytokine-activated M psi.
机译:用荚膜组织胞浆酵母细胞感染人单核细胞/巨噬细胞(M psi),在单独的培养基或含有细胞因子的培养基中孵育24小时后,对细胞内生长进行定量。酵母细胞在新鲜分离的单核细胞,培养的M psi和肺泡M psi中繁殖,细胞内生成时间为14.2 +/- 1.4、18.5 +/- 2.1和19.9 +/- 1.9 h(平均值的+/-标准误差) ), 分别。单核细胞和M psi抑制酵母细胞对细胞因子上清液的细胞内生长。当感染后立即将细胞因子加入细胞单层时,可获得最大的抑制作用。正常血清或荚膜梭状芽孢杆菌免疫血清中酵母细胞的调理作用不会影响对照M psi或细胞因子激活的M psi中酵母细胞的胞内生成时间。

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