一个双步,双样本的门德尔随机化研究肠道微生物群,血液代谢物和干燥的与年龄相关的黄斑变性
Hong Kong1, Jiliang Li2, Jiaqi Lou2
1Ningbo College of Health Sciences, Ningbo, Zhejiang Province, China.
Medicine
|February 6, 2026
概括
某些肠道微生物和血液代谢物与干燥的与年龄相关的黄斑变性 (dAMD) 有关. 增加帕拉索特拉属的丰富性可能会通过特定的血液代谢物水平提高dAMD风险.
科学领域:
- 眼科医生 眼科 眼科
- 微生物学 微生物学
- 代谢学 代谢学 代谢学
背景情况:
- 与年龄相关的干性黄斑变性 (dAMD) 是全球老年人视力丧失的主要原因.
- 了解病因因素,包括肠道微生物群 (GM) 和血液代谢物,对于预防和治疗dAMD至关重要.
研究的目的:
- 调查欧洲人肠道微生物群 (GM),血液代谢物和干燥的年龄相关黄斑变性 (dAMD) 之间的潜在因果关系.
- 探索血液代谢物在转基因和dAMD之间的关联中的调解作用.
主要方法:
- 使用双样本门德尔随机化 (MR) 设计,利用全基因组关联分析数据.
- 采用逆变量加权 (IVW) 方法用于因果效应估计,并采用解决变性和异质性的方法.
- 进行了两步MR分析,以量化代谢物介导的转基因对dAMD风险的影响.
主要成果:
- 确定了15种与改变dAMD风险相关的肠道微生物种群.
- 发现与dAMD风险显著相关的18种血液代谢物.
- 证明血液代谢物水平调解了GM和dAMD之间的关系,ADpSGEGDFXAEGGGVR水平解释了Parasutterella属到dAMD的因果途径的38.9%.
结论:
- 特定的肠道微生物群和血液代谢产物在dAMD的发病过程中起作用.
- 高水平的Parasutterella属可能会通过ADpSGEGDFXAEGGGVR的调解增加dAMD风险,突出显示一个潜在的治疗标.
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