雌激素损失后骨质细胞发育的增加:通过互白素-6调解
R L Jilka1, G Hangoc, G Girasole
1Department of Veterans Affairs Medical Center, Indiana University School of Medicine, Indianapolis 46202.
Science (New York, N.Y.)
|July 3, 1992
概括
雌激素的损失通过介质素-6刺激骨再吸收骨质细胞,这表明了绝经后骨质疏松症的机制. 补充17β-雌激醇或阻断介质素-6可以防止这种效应.
科学领域:
- 骨生物学 骨生物学 骨生物学
- 内分泌学 在内分泌学.
- 免疫学 免疫学 免疫学
背景情况:
- 骨质细胞重新吸收骨,并从造血前体中发展.
- 洲际蛋白-6 (IL-6) 促进骨质细胞生成和血液形成.
- 17β-雌激醇抑制了骨和骨髓 stromal 细胞的IL-6 生产.
研究的目的:
- 为了研究雌激素和介质素-6在骨质细胞形成中的作用.
- 阐明将雌激素损失与骨再吸收增加联系起来的机制.
主要方法:
- 在小鼠中切除卵巢以诱导雌激素损失.
- 骨髓的ex vivo培养,以评估骨质细胞的发育.
- 17β-雌激醇或抗IL-6抗体的使用.
主要成果:
- 雌激素损失增加了骨髓原生细胞和骨质细胞的发育.
- 在卵巢切除后,在骨骨中观察到骨质细胞数量的增加.
- 服用17β-雌激醇和抗IL-6抗体可以防止这些变化.
结论:
- 雌激素的损失导致骨质细胞形成的增加,这种形成由中介介于介素-6.
- 这种依赖IL-6的途径提供了绝经后骨质疏松症的机制.
- 向IL-6可能是治疗雌激素缺乏骨损失的治疗策略.
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