25-基维生素D,维生素D结合蛋白和妊娠期糖尿病:一个双样本的孟德尔随机化研究
Yiwen Qiu1,2, Diliyaer Ainiwan1,2, Ye Huang1,2
1Department of Public Health and Department of Anesthesiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China.
Nutrients
|August 29, 2024
概括
这项研究使用了门德尔的随机化来研究维生素D.
科学领域:
- 内分泌学和新陈代谢学
- 营养科学 营养科学
- 生殖健康 生殖健康
背景情况:
- 观察性研究表明,维生素D与妊娠糖尿病之间存在联系,但因果关系尚不清楚.
- 现有的研究面临局限性,包括混因素和不足的统计能力.
- 确定因果关系对于理解GDM预防和管理至关重要.
研究的目的:
- 调查25-基维生素D (25(OH) D和维生素D结合蛋白 (VDBP) 与GDM风险之间的潜在因果关系.
- 用孟德尔随机化来解决以往基于观察和试验的研究的局限性.
- 提供关于维生素D代谢物在GDM病因学中的作用的强有力的证据.
主要方法:
- 两个样本的门德尔随机化 (MR) 分析利用来自大型独立队列的公开可用的总结数据.
- 与25~OH) D和VDBP水平相关的遗传变异被用作仪器变量.
- 逆方差加权 (IVW) 方法作为主要分析,使用MR-Egger,加权中位数和加权模式进行灵敏度分析.
主要成果:
- 起初有人认为25(OH) D和GDM风险之间存在弱而潜在的负面因果关系 (OR:0.71;95%CI:0.50-0.99).
- 在删除与体重指数 (BMI) 相关的仪器变量 (OR:0.76;95% CI:0.55-1.06) 后,这种关联变得无意义,这表明BMI的潜在混.
- 没有发现VDBP水平和GDM风险之间的相关性 (OR:0.98;95%CI:0.93-1.03).
结论:
- 这项研究发现,25(OH) D和GDM风险之间存在因果关系的证据有限,BMI可能造成混.
- 在VDBP水平和GDM风险之间没有确立因果关系.
- 需要使用全基因组关联研究 (GWAS) 数据进行进一步的研究,特别是在多样化的女性群体中,以澄清维生素D和GDM之间的关系.
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