Granulocyte-macrophage colony-stimulating factor augments human monocyte fungicidal activity for Candida albicans.

Granulocyte-macrophage colony-stimulating factor augments human monocyte fungicidal activity for Candida albicans.
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粒细胞巨噬细胞集落刺激因子增强人单核细胞对白色念珠菌的杀菌活性。

DOI:
10.1093/infdis/161.5.999
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发表时间:
1990
期刊:
The Journal of infectious diseases
影响因子:
--
通讯作者:
Wahl,SM
Wahl,SM
中科院分区:
--
文献类型:
--
作者:
Smith,PD;Lamerson,CL;Banks,SM;Saini,SS;Wahl,LM;Calderone,RA;Wahl,SM

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本文研究了重组人粒细胞-巨噬细胞集落刺激因子(rhGM-CSF)对人单核细胞体外抗白念珠菌活性的增强作用。纯化的人单核细胞与[3 H]亮氨酸标记的C.白念珠菌引起[3 H]亮氨酸的剂量依赖性释放。释放的[3 H]亮氨酸的量与活酵母菌落数的减少相关。单核细胞毒性C.白念珠菌减少超氧化物歧化酶和过氧化氢酶和髓过氧化物酶抑制剂和清除剂的羟基自由基和单线态氧,与单核细胞的杀念珠菌活性部分依赖于氧化代谢的产品。与对照组相比,rhGM-CSF孵育的单核细胞自发和刺激后产生的超氧阴离子(O2-)明显增多(P<0.05)。rhGM-CSF对O2-产生的促进作用具有剂量依赖性和特异性,并可被rhGM-CSF抗体抑制。与rhGM-CSF诱导的O2-产生有关,细胞因子增强了对C.白色念珠菌这些结果表明rhGM-CSF刺激人单核细胞对C.白色念珠菌
The ability of recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) to augment the fungicidal activity of human monocytes forCandida albicanswas evaluated. Purified human monocytes cultured with [3H]leucine-labeledC. albicanscaused a dose-dependent release of the [3H]leucine. The amount of [3Hlleucine released correlated with a decrease in the number of viable yeast colonies. Monocyte cytotoxicity forC. albicanswas reduced by superoxide dismutase and catalase and by inhibitors of myeloperoxidase and scavengers of hydroxyl radical and singlet oxygen, consistent with monocyte candidacidal activity being partly dependent upon products of oxidative metabolism. Monocytes incubated with rhGM-CSF produced more superoxide anion (02-) spontaneously and after stimulation than control monocytes (P< ,05). Enhanced O2- production was dose-dependent and specific for rhGM-CSF and could be inhibited by antibody to rhGM-CSF. In association with rhGM-CSF-induced production of O2- , the cytokine enhanced cytotoxic activity forC. albicans. These findings indicate that rhGM-CSF stimulates human monocyte fungicidal activity forC. albicans.
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