Chinese General Practice ›› 2025, Vol. 28 ›› Issue (21): 2625-2634.DOI: 10.12114/j.issn.1007-9572.2023.0641

Special Issue: 内分泌代谢性疾病最新文章合辑 肥胖最新文章合辑

• Original Research • Previous Articles     Next Articles

Metabolomics Based Mediating Role of Non-lipid Metabolites in the Relationship between Obesity and Diabetic Retinopathy: a Mendelian Randomization Study

  

  1. School of Public Health, Guangdong Medical University, Dongguan 523808, China
  • Received:2024-04-27 Revised:2024-09-05 Published:2025-07-20 Online:2025-06-05
  • Contact: KONG Danli, DING Yuanlin, YU Haibing

基于代谢组学探究非脂质代谢物在肥胖与糖尿病视网膜病变间的中介作用:孟德尔随机化研究

  

  1. 523808 广东省东莞市,广东医科大学公共卫生学院
  • 通讯作者: 孔丹莉, 丁元林, 于海兵
  • 作者简介:

    作者贡献:

    王爽负责研究的构思与设计、研究的实施;王爽、吴树法、令垚负责论文撰写;王爽、谭茜蔚负责数据整理与分析;曹汝岱、曾慧婷进行图、表绘制与优化;孔丹莉、丁元林、于海兵负责文章的修订,质量控制与审查,对文章整体负责。

  • 基金资助:
    广东省基础与应用基础研究基金自然科学基金项目(2022A1515012407); 广东省基础与应用基础研究基金区域联合基金项目(重点项目)(2020B1515120021); 广东省中医药科学技术研究项目(20221209); 广东省医学科研基金项目(A2021395); 广东医科大学学科建设项目(4SG21276P); 广东医科大学本科教学质量和教学改革工程项目(1JG22125); 东莞市科技特派员项目(20221800500342); 东莞市社会发展科技项目(重点)(20221800905642); 大学生创新创业训练计划项目(S202210571088,GDMU2021112)

Abstract:

Background

Obesity can influence the occurrence and progression of diabetic retinopathy (DR) through various pathways, however there are limited studies on the mediation of DR by obesity through non-lipid metabolic pathways.

Objective

To investigate the mediating role of non-lipid metabolites in the relationship between obesity and DR.

Methods

In August 2023, we utilized genome-wide association study (GWAS) data and conducted Mendelian randomization (MR) analysis to explore the mediating role of non-lipid metabolites in the association between obesity and DR.

Results

BMI (OR=1.78, P=5.3E-12) and waist-to-hip ratio (WHR) (OR=1.91, P=1.3E-10) was associated with increased risk of DR, respectively. Lower levels of isoleucine (OR=0.62, P=0.039) , pyruvate (OR=0.60, P=0.039) , albumin (OR=0.65, P=0.002) , glycoprotein (OR=0.92, P=0.002) , and decreased ratio of dienes to double bonds (OR=0.93, P=0.048) was associated with increased risk of DR, respectively. Positive causal associations were observed between BMI and isoleucine (OR=1.21, P=1.0E-08) , glycoprotein (OR=1.33, P=3.2E-14) , pyruvate (OR=1.08, P=0.03) , and negative causal associations with albumin (OR=0.93, P=0.04) and the ratio of dienes to double bonds (OR=0.82, P=2.8E-05) . Positive causal associations were also found between WHR and isoleucine (OR=1.34, P=3.4E-08) and glycoprotein (OR=1.26, P=1.2E-04) . Isoleucine (β=-0.16, P=0.019) , glycoprotein (β=-0.05, P=0.029) , pyruvate (β=-0.07, P=0.027) , and the ratio of dienes to double bonds (β=0.02, P=0.036) mediated the causal association between BMI and DR, while isoleucine (β=-0.21, P=7.2E-04) and glycoprotein (β=-0.03, P=0.031) mediated the causal association between WHR and DR.

Conclusion

Obesity has a positive causal association with DR, with BMI's association with DR mediated by isoleucine, glycoprotein, pyruvate, and the ratio of dienes to double bonds, and WHR's association with DR mediated by isoleucine and glycoprotein. Non-lipid metabolic products play a mediating role between obesity and DR.

Key words: Diabetic retinopathy, Obesity, Metabolomics, Non-lipid metabolites, Body mass index, Waist-to-hip ratio, Mendelian randomization analysis

摘要:

背景

肥胖可通过多种途径影响糖尿病视网膜病变(DR)的发生和发展,但目前关于肥胖通过非脂质代谢途径介导而影响DR的研究报道较少见。

目的

探究非脂质代谢物在肥胖与DR间的中介作用。

方法

2023年8月,基于全基因组关联数据(GWAS),通过孟德尔随机化(MR)探究非脂质代谢物在肥胖与DR间的中介作用。

结果

BMI增大(OR=1.78,P=5.3E-12)、腰臀比(WHR)增大(OR=1.91,P=1.3E-10)均与DR发病风险升高有关。异亮氨酸(OR=0.62,P=0.039)、丙酮酸(OR=0.60,P=0.039)、白蛋白(OR=0.65,P=0.002)、糖蛋白(OR=0.92,P=0.002)、双烯基与双键的比率降低(OR=0.93,P=0.048)均与DR发病风险升高有关。BMI与异亮氨酸(OR=1.21,P=1.0E-08)、糖蛋白(OR=1.33,P=3.2E-14)、丙酮酸(OR=1.08,P=0.03)呈正向因果关联,与白蛋白(OR=0.93,P=0.04)、双烯基与双键的比率(OR=0.82,P=2.8E-05)呈负向因果关联;WHR与异亮氨酸(OR=1.34,P=3.4E-08)、糖蛋白(OR=1.26,P=1.2E-04)呈正向因果关联。异亮氨酸(β=-0.16,P=0.019)、糖蛋白(β=-0.05,P=0.029)、丙酮酸(β=-0.07,P=0.027)、双烯基与双键的比率(β=0.02,P=0.036)介导BMI与DR间的因果关联,异亮氨酸(β=-0.21,P=7.2E-04)、糖蛋白(β=-0.03,P=0.031)介导WHR与DR间的因果关联。

结论

肥胖与DR有正向因果关联,其中BMI与DR的关联由异亮氨酸、糖蛋白、丙酮酸、双烯基与双键的比率介导,WHR与DR的关联由异亮氨酸、糖蛋白介导,非脂质代谢产物在肥胖与DR间具有中介作用。

关键词: 糖尿病视网膜病变, 肥胖症, 代谢组学, 非脂质代谢物, 体质指数, 腰臀比, 孟德尔随机化分析

CLC Number: