雌激素对成骨细胞、破骨细胞作用的新进展

被引:14
作者
刘华
林守清
机构
[1] 中国医学科学院北京协和医学院北京协和医院妇产科
关键词
成骨细胞; 破骨细胞; 雌激素; Fas/FasL; FSH;
D O I
暂无
中图分类号
R580 [];
学科分类号
摘要
成骨细胞和破骨细胞均表达雌激素受体,但雌激素对两者的作用远未阐明。雌激素能诱导成骨细胞产生骨保护素(osteoprotegerin,OPG)。当雌激素缺乏时,T细胞分泌TNF和IL-7等增加,作用于破骨细胞加速骨丢失;绝经后FSH升高,可直接作用于破骨细胞增强其功能。雌激素亦可通过非基因组效应减缓成骨细胞凋亡,加速破骨细胞凋亡。最近研究发现,雌激素通过ERα可直接阻止骨丢失,可能机制是诱导成骨细胞和破骨细胞表达FasL,以旁分泌和自分泌的方式促进破骨细胞凋亡。
引用
收藏
页码:123 / 127
页数:5
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