门德尔随机化研究揭示了非酒精性脂肪肝疾病和骨质疏松症/骨折之间的因果关系
Xiong Pei1, Wei Jiang1, Lianchi Li2
1Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, 610041, China.
Journal of gastroenterology and hepatology
|January 19, 2024
概括
非酒精性脂肪肝 (NAFLD) 与骨矿物质密度 (BMD) 降低和骨折风险增加有关. 体重指数 (BMI) 可能会调解这些影响,因此需要在更大规模的研究中进一步调查.
科学领域:
- 遗传学 遗传学 是一个
- 代谢疾病 代谢疾病
- 骨健康 骨健康 骨健康
背景情况:
- 非酒精性脂肪肝 (NAFLD) 与骨质疏松症和骨折风险增加有关,但因果关系尚未得到充分确立.
- 了解NAFLD和骨健康之间的关系对于患者管理和预防策略至关重要.
研究的目的:
- 使用孟德尔随机化 (MR) 调查NAFLD与骨矿物密度 (BMD) 和骨折风险之间的潜在因果关系.
- 探索代谢因素和肥胖在调解NAFLD和骨折之间的关联中的作用.
主要方法:
- 利用公开可用的全基因组关联研究 (GWAS) 进行门德尔随机化 (MR) 分析.
- 分析了NAFLD,骨折,BMD,肥胖,糖尿病,肝功能和血清脂类相关指标的GWAS数据.
- 进行了多变量MR分析,以身体质量指数 (BMI) 进行调整,以评估调解效应.
主要成果:
- 复制GWAS表明NAFLD和减少的股骨部-BMD (FN-BMD) 和骨质疏松症之间存在因果关系.
- 基因预测的BMI,高密度脂蛋白 (HDL) 和部周长与下肢骨折风险增加有关.
- 糖化血红蛋白 (HbA1C) 和β细胞功能 (HOMA-B) 的稳态模型评估与前臂和股骨骨折风险的增加有关,而低密度脂蛋白 (LDL) 对股骨骨折表现出保护作用.
- 在多变量MR分析中对BMI进行调整后,大多数观察到的关系变得微不足道,表明BMI是潜在的调解者.
结论:
- NAFLD因果性地降低了骨损伤和增加骨折风险,其中代谢因素如HDL,LDL,HbA1C,HOMA-B以及人体测量 (部周长,腰与部比率) 起着重要作用.
- 身体质量指数 (BMI) 似乎调解了NAFLD和骨折风险之间的因果关系.
- 需要更大的GWAS来证实这些发现,并阐明NAFLD,代谢健康和骨质完整性之间的复杂相互作用.
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