常见的雌激素受体多态性增加了激素替代疗法对E-选择素的影响,但不是C-反应蛋白的影响
David M Herrington1, Timothy D Howard, K Bridget Brosnihan
1Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1045, USA. kklein@wfubmc.edu
Circulation
|May 9, 2002
概括
雌激素受体-alpha (ER-alpha) IVS1-401 C/C基因型增强激素替代疗法 (HRT) 减少E-选择蛋白,但不是C反应蛋白 (CRP). 这种多态化为B-myb创建了一个结合点,影响雌激素的作用.
科学领域:
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
- 心血管健康 心血管健康
背景情况:
- 雌激素受体-α (ER-alpha) IVS1-401多态性影响激素替代疗法 (HRT) HDL胆固醇响应在约20%的女性.
- 研究了这种多态性是否会影响HRT对E选择素和C反应蛋白 (CRP) 的影响.
研究的目的:
- 确定ER-alpha IVS1-401多态是否增加了HRT对E-选择素和CRP的调节.
- 探索将多形态与雌激素作用联系在一起的机制.
主要方法:
- 测量了264名绝经后妇女的血清E-选择素和CRP,随机分配给HRT或安慰剂.
- 分析了对HRT的基因型特异性反应.
- 使用 luciferase 记者构造来评估 IVS1-401 T/C 多态和 B-myb 相互作用的功能影响.
主要成果:
- 具有ER-alpha IVS1-401 C/C基因型的女性在HRT时显示了大约2倍的E-选择蛋白减少 (P=0.02).
- 在C/C和其他基因型之间没有观察到HRT诱导的CRP增加的显著差异 (P=0.54).
- 在C等位基构造中,B-myb的表达增强了10倍以上,而T等位基的表达增强了2.5倍.
结论:
- ER-alpha IVS1-401 C/C基因型与更大的HRT诱导的E-选择蛋白减少有关,但没有改变CRP反应.
- 这种C等位基创建了一个功能性的B-myb结合点,这表明了一个分子机制.
- 这种多态化对ER-alpha转录和其他结果的临床意义需要进一步研究.
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