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遗传变异,血清25-基维生素D水平,和萨尔科佩尼亚:一个门德尔的随机化分析
Tingting Sha1,2,3, Yilun Wang1,2,3, Yuqing Zhang4,5
1Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China.
JAMA network open
|August 30, 2023
概括
低于最佳的维生素D水平 (10-20 ng/mL) 与增加的肉症风险有关. 高达20 ng/mL的水平显著降低了风险,此后益处高原,表明有针对性的补充可能是有益的.
科学领域:
- 营养生物化学 营养生物化学
- 老年学是指老年学的学科.
- 遗传流行病学遗传流行病学
背景情况:
- 维生素D缺乏与肉症有关,但补充剂的益处仍在争议中.
- 目前的指导方针针对严重缺乏 (<10 ng/mL),留下低于最佳水平 (10-20 ng/mL) 的健康影响尚不清楚.
- 全球大约30%的人口的血清25-基维生素D (25(OH) D含量低于最佳水平.
研究的目的:
- 为了研究血清25(OH) D水平,特别是低于最佳范围,与肉类的风险之间的关联.
- 探索维生素D状况与肉症发展之间的非线性关系.
主要方法:
- 一个全基因组遗传关联研究,利用门德尔的随机化.
- 在英国生物银行 (2006-2010年) 中使用了来自295,489名欧洲参与者的数据.
- 使用加权遗传风险得分作为用于血清25OH) D度的仪器变量.
主要成果:
- 在基因预测的血清25(OH) D和肉症风险之间观察到L形关联.
- 随着25(OH) D水平上升至20 ng/mL,肉症的风险显著降低,然后平稳.
- 与20 ng/mL的人相比,具有10 ng/mL的25 ......OH) D水平的个体患上缩症的几率是20 ng/mL的1.74倍.
结论:
- 这些发现支持了25OH) D水平低于最佳水平与增加的肉症风险之间的非线性关联.
- 维生素D的降低风险益处似乎最明显,高达20 ng/mL的水平.
- 需要在未达到最佳维生素D水平的个体中进行进一步的随机临床试验,以确认因果关系.
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