从维生素D受体等位体预测骨密度
N A Morrison1, J C Qi, A Tokita
1Garvan Institute of Medical Research, St Vincent's Hospital, Sydney, New South Wales, Australia.
Nature
|January 20, 1994
概括
维生素D受体基因中的遗传变异显著预测骨密度,占大部分遗传影响. 特定的基因型与绝经后妇女骨质疏松症风险增加有关.
科学领域:
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
- 骨生物学 骨生物学 骨生物学
背景情况:
- 在成年早期达到的峰值骨质量对于预防骨质疏松性骨折至关重要.
- 低骨密度是骨折的主要风险因素,受到影响骨周转的遗传因素的显著影响.
- 骨质疏松性骨折影响了大量女性,特别是在绝经后.
研究的目的:
- 研究维生素D受体基因的常见等位基因变异与骨密度之间的关联.
- 确定维生素D受体基因变异在多大程度上解释了对骨密度的遗传贡献.
- 评估特定的维生素D受体基因型是否在骨密度低的女性中过度表现.
主要方法:
- 维生素D受体基因中常见的等位基因变异的基因定型.
- 在健康个体的队列中测量骨密度.
- 统计分析以将基因型与骨密度测量相关联.
- 在正常骨密度和低骨密度妇女之间的基因型频率的比较.
主要成果:
- 维生素D受体基因中常见的等位基因变异预测骨密度的差异,解释了高达75%的总遗传效应.
- 发现与较低骨密度相关的特定基因型在绝经后妇女中过多,骨密度超过正常水平的2个标准偏差.
- 潜在的分子机制涉及影响信使RNA水平的3'未翻译区域的基差异.
结论:
- 维生素D受体基因变异是骨密度的重要决定因素和骨质疏松风险的预测因素.
- 这些发现强调了维生素D受体基因在调节骨质中的作用.
- 基于维生素D受体基因型的向干预可能为骨质疏松症预防提供新的策略.
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