对视网膜血管口径的多基因分数的开发和验证
Chenglong Yu1,2, Nuwanthi Rupasinghe1, Liubov Robman1,3
1School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
Investigative ophthalmology & visual science
|October 6, 2025
概括
视网膜血管口径的多基因分数 (PGS),包括中央视网膜动脉等价值 (CRAE) 和中央视网膜静脉等价值 (CRVE),与老年人微血管健康有关. 这些遗传标记物解释了视网膜血管直径的显著差异.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学是一种遗传学.
- 公共卫生 公共卫生
背景情况:
- 视网膜血管口径是微血管健康的遗传性,可测量的生物标志物.
- 全基因组关联研究 (GWAS) 已经确定了视网膜血管特征的遗传性.
- 视网膜血管口径的多基因分数 (PGS) 之前没有开发过.
研究的目的:
- 为了计算视网膜血管口径的PGS.
- 为了将这些PGS与老年人测量的视网膜血管表型联系起来.
主要方法:
- 包括3717个欧洲血统的个人 (≥70岁) 与视网膜成像和基因型数据.
- 测量了视网膜血管口径作为中央视网膜动脉等价值 (CRAE) 和中央视网膜静脉等价值 (CRVE).
- 使用SBayesRC方法构建PGS,并通过线性回归分析关联.
主要成果:
- 无论是CRAE还是CRVE的PGS都与它们各自测量的视网膜血管口径有显著的关联 (P < 0.0001).
- 每一个标准偏差增加的PGS与增加的容器直径相关 (1.53微米对于CRAE,3.89微米对于CRVE).
- PGS解释了6.0%的CRAE和7.1%的CRVE变异,四分位数之间有剂量反应.
结论:
- 对于CRAE和CRVE的PGS与测量的视网膜微血管表型有关.
- 这些发现强调了对视网膜血管口径的遗传贡献.
- 提供了对微血管和宏血管健康背后的机制的见解.
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