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Exogenous nitric oxide modulates cytokine production in human leukocytes

机译:外源性一氧化氮调节人白细胞中细胞因子的产生

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Exogenous nitric oxide was found to modify the pattern of cytokine secretion from human leukocytes, with similar outcome in 11 different healthy blood donors. Peripheral blood mononuclear cells (PBMC) were stimulated with phytohaemagglutinin (PHA) in the presence of increasing amounts of the NO donor S-nitroso-N-acetyl-penicillamine (SNAP). The NO donor dose-dependently enhanced IL-4 secretion into the supernatant (p < 0.01). In contrast, IFN#gamma# production was not affected while IL-10 levels were slightly decreased. Comparable changes were observed when analysing cytokine mRNA levels by semiquantiative RT-PCR. The differential effect of the NO donor on IL-4 versus IL-10 and IFN#gamma# gene expression suggests an immunomodulatory potential of NO, which may serve to limit inflammatory responses.
机译:发现外源性一氧化氮可改变人白细胞分泌的细胞因子,在11个不同的健康献血者中结果相似。在存在越来越多的NO供体S-亚硝基-N-乙酰青霉胺(SNAP)的情况下,用植物血凝素(PHA)刺激外周血单核细胞(PBMC)。 NO供体剂量依赖性地增强了IL-4向上清液的分泌(p <0.01)。相比之下,IFN#γ#的产生不受影响,而IL-10水平则略有降低。通过半定量RT-PCR分析细胞因子mRNA水平时,观察到相当的变化。 NO供体对IL-4相对于IL-10和IFN#gamma#基因表达的差异作用表明NO的免疫调节潜力,这可能会限制炎症反应。

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