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首页> 外文期刊>Biochemical Pharmacology >Decreased pro-inflammatory cytokine production by LPS-stimulated PBMC upon in vitro incubation with the flavonoids apigenin, luteolin or chrysin, due to selective elimination of monocytes/macrophages.
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Decreased pro-inflammatory cytokine production by LPS-stimulated PBMC upon in vitro incubation with the flavonoids apigenin, luteolin or chrysin, due to selective elimination of monocytes/macrophages.

机译:由于选择性清除了单核细胞/巨噬细胞,在与类黄酮芹菜素,木犀草素或菊花素体外孵育后,LPS刺激的PBMC降低了促炎细胞因子的产生。

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摘要

Apigenin and its structural analogues chrysin and luteolin were used to evaluate their capacity to inhibit the production of pro-inflammatory cytokines by lipopolysaccharide (LPS)-stimulated human peripheral blood mononuclear cells (PBMC). Furthermore, flowcytometric analysis was performed to compare the effects of apigenin, chrysin, luteolin, quercetin and naringenin on the different cell types present in PBMC. LPS-stimulated PBMC were cultured in the presence of the flavonoids and TNFalpha, IL-1beta and IL-6 were measured in the supernatants. In parallel, metabolic activity of the PBMC was determined by measuring succinate dehydrogenase activity. Apigenin, chrysin and luteolin dose-dependently inhibited both pro-inflammatory cytokine production and metabolic activity of LPS-stimulated PBMC. With increasing concentration of apigenin, chrysin or luteolin the monocytes/macrophages disappeared as measured by flowcytometry. This also appeared to occur in the non-LPS-stimulated PBMC. At the same time therewas an increase in dead cells. T- and B-lymphocytes were not affected. Quercetin and naringenin had virtually no effects on cytokines, metabolic activity or on the number of cells in the studied cell populations. In conclusion, monocytes were specifically eliminated in PBMC by apigenin, chrysin or luteolin treatment in vitro at low concentrations (around 8muM), in which apigenin appeared to be the most potent.
机译:芹菜素及其结构类似物chrysin和木犀草素用于评估其抑制脂多糖(LPS)刺激的人外周血单核细胞(PBMC)产生促炎性细胞因子的能力。此外,进行流式细胞术分析以比较芹菜素,菊花素,木犀草素,槲皮素和柚皮素对PBMC中不同细胞类型的影响。 LPS刺激的PBMC在类黄酮存在下培养,并在上清液中测量TNFalpha,IL-1beta和IL-6。同时,通过测量琥珀酸脱氢酶活性来测定PBMC的代谢活性。芹菜素,chrysin和木犀草素剂量依赖性地抑制LPS刺激的PBMC的促炎细胞因子产生和代谢活性。随着芹菜素,菊花素或木犀草素浓度的增加,如通过流式细胞术测量的,单核细胞/巨噬细胞消失。这似乎也出现在非LPS刺激的PBMC中。同时死细胞增加。 T和B淋巴细胞不受影响。槲皮素和柚皮苷对研究的细胞群中的细胞因子,代谢活性或细胞数量几乎没有影响。总而言之,在体外以低浓度(约8μM)的芹菜素,菊花蛋白或木犀草素处理可在PBMC中特异性清除单核细胞,其中芹菜素似乎是最有效的。

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