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视网膜血管参数的表型和遗传特征及其与疾病的关联

Sofía Ortín Vela^1,2, Michael J Beyeler^3,4, Olga Trofimova^5,6

¹Department of Computational Biology, University of Lausanne, Lausanne, Switzerland. sofia.ortinvela@unil.ch.

Nature communications

|November 6, 2024

概括

这项研究分析了来自英国生物库图像的视网膜血管表型,揭示了遗传影响和与心脏病发作等疾病的联系. 视网膜血管形态受血压和体重指数等因素的影响.

科学领域:

眼科和遗传学眼科和遗传学
医学成像分析分析医学成像分析
心血管健康的心血管健康

背景情况:

通过 fundus 图像进行视网膜血管系统评估,可以提供非侵入性的健康见解.
视网膜血管的形态特征是整体健康的关键指标.

研究的目的:

对来自英国大型生物库队列的17种形态血管表型进行全基因组关联研究 (GWAS).
研究这些视网膜血管表型的遗传性,遗传相关性和疾病相关性.
探索系统因素和视网膜血管形态之间的因果关系.

主要方法:

自动图像处理管道从超过13万张 fundus 图像中提取17种血管表型.
全基因组关联研究 (GWAS) 和门德尔随机化 (MR) 分析.
在两个独立的队列中验证.

主要成果:

表型的遗传性在5-25%之间.
直径的变化,特别是在静脉中,与心脏病发作,肺栓塞和死亡年龄有关.
核磁共振分析表明血压和BMI对视网膜血管形态的因果关系.

结论:

对图像衍生的血管表型的大规模分析提供了强大的功能和因果洞察力.
分离的遗传机制调节不同的视网膜血管表型.
视网膜血管形态受全身健康因素的影响,并与疾病风险有关.

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