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Effects of 17 estradiol on chemokine receptor CXCR2 expression in monocytes incubated with oxidized low density lipoproteins
Author(s): 
Pages: 30-32
Year: Issue:  1
Journal: CHINESE JOURNAL OF GERIATRICS

Keyword:  单核细胞雌二醇脂蛋白类受体趋化因子;
Abstract: 目的研究17β-雌二醇对氧化低密度脂蛋白(oxLDL)诱导单核细胞合成趋化因子受体CXCR2的影响.方法单核细胞的研究模型为人前单核细胞系U937细胞.流式细胞仪测定单核细胞趋化因子受体CXCR2的蛋白表达,逆转录 PCR测定其mRNA水平. 结果oxLDL(50μg/ml)可明显促进U937细胞的CXCR2 mRNA及蛋白表达;17β-雌二醇(50 nmol/L)预处理抑制了oxLDL(50 μg/ml)诱导的U937细胞CXCR2的mRNA及蛋白表达,且17β-雌二醇(5~500 nmol/L)抑制oxLDL(50 μg/ml)诱导U937细胞合成的CXCR2蛋白呈正向量效关系.结论雌激素抑制oxLDL诱导U937细胞产生的趋化因子受体CXCR2表达.
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