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白细胞介素-4对支气管上皮细胞表达嗜酸性粒细胞趋化因子-3的影响

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摘要 目的:研究嗜酸性粒细胞趋化因子-3(eotaxin-3)在支气管上皮细胞的表达以及Th2细胞因子白细胞介素-4(IL-4)对其表达的调节,探讨支气管上皮细胞和IL-4在气道变态反应性炎症中的作用。方法:以BEAS-2B细胞和NHBE细胞为研究对象,用IL-4刺激细胞24 h,RT-PCR法检测eotaxin-3在mRNA水平的表达;ELISA法检测细胞培养上清液中eotaxin-3蛋白的表达。结果:未经处理的支气管上皮细胞不表达eotaxin-3,用IL-4刺激细胞24 h后,可见mRNA和蛋白水平的eotaxin-3的明显表达,IL-4的这种诱导作用呈浓度依赖性增强。结论:支气管上皮细胞不仅是一种屏障细胞,也是一种效应细胞,在炎症介质IL-4的刺激下能表达eotaxin-3,可能是其参与支气管哮喘嗜酸性粒细胞炎症的机制之一。
作者 欧维琳
出处 《广西医科大学学报》 CAS 北大核心 2006年第4期585-587,共3页 Journal of Guangxi Medical University
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参考文献12

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