首页> 美国卫生研究院文献>Journal of Traditional and Complementary Medicine >Antiinflammatory Activity of Gynura bicolor (紅鳳菜 Hóng Fèng Cài) Ether Extract Through Inhibits Nuclear Factor Kappa B Activation
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Antiinflammatory Activity of Gynura bicolor (紅鳳菜 Hóng Fèng Cài) Ether Extract Through Inhibits Nuclear Factor Kappa B Activation

机译:通过抑制核因子κB的活化来提取红凤菜(HyngFèngCài)乙醚提取物的抗炎活性。

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摘要

This study investigated effects of the Gynura bicolor (Roxb. and Willd.) DC. ether extract (GBEE) on nitric oxide (NO) and prostaglandin (PG)E2 production on the lipopolysaccharide (LPS)-induced inflammatory response in RAW 264.7 cells. A composition analysis of GBEE showed that the major compounds were b-carotene, chlorophyll, and quercetin, respectively. Furthermore, NO and PGE2 levels of 120 μg/ml GBEE-treated cells were 70% and 9.8%, respectively, than those of cells treated with LPS alone. Immunoblots assays showed that the GBEE dose-dependently suppressed LPS-induced inducible NO synthase (iNOS) and cyclooxygenase (COX)-2 protein levels. The GBEE significantly decreased cytosolic phosphorylated (p)-IκBa and nuclear p65 protein expressions. Electrophoresis mobility shift assays indicated that the GBEE effectively inhibited nuclear factor kappa B (NF-κB) activation induced by LPS. These results support a role of the GBEE in suppressing activation of NF-κB to inhibit NO and PGE2 production in the LPS-induced inflammatory response by RAW 264.7 cells.
机译:这项研究调查了Gynura双色(Roxb。和Willd。)DC的影响。醚提取物(GBEE)对一氧化氮(NO)和前列腺素(PG)E2的产生,对脂多糖(LPS)诱导的RAW 264.7细胞产生炎症反应。 GBEE的组成分析表明,主要化合物分别为β-胡萝卜素,叶绿素和槲皮素。此外,与单独用LPS处理的细胞相比,经120μg/ ml GBEE处理的细胞的NO和PGE2水平分别为70%和9.8%。免疫印迹分析表明,GBEE剂量依赖性抑制LPS诱导的诱导型一氧化氮合酶(iNOS)和环氧合酶(COX)-2的蛋白水平。 GBEE显着降低了胞浆磷酸化(p)-IκBa和核p65蛋白的表达。电泳迁移率变动分析表明GBEE有效抑制了LPS诱导的核因子κB(NF-κB)活化。这些结果支持了GBEE在抑制NF-κB活化以抑制RAW 264.7细胞在LPS诱导的炎症反应中NO和PGE2产生中的作用。

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