Experimental Gerontology

Genetic model maps shared signals of blood vessel aging

A computational analysis of five blood vessel traits in European-ancestry populations identified 249 genetic regions, including three newly implicated in blood vessel aging.

Paper by Yiming Liu, You Ma, Yiwei Liu, Zhen Sun · First Affiliated Hospital of Anhui Medical University
An opened artery with fatty deposits, mineral fragments, and clustered inflammatory cells sits beside a smaller artery with a clear passage.
Genetic association study of people of European ancestryMechanisms

Limit: Vascular aging was represented by a modeled combination of traits, not measured directly

Edited by Boris Djordjevic · AgingResearch.News

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In European-ancestry populations, a computational study modeled shared genetic patterns across five traits related to blood vessel aging. Researchers used summary results from genome-wide association studies, which look for links between DNA variants and traits. The traits were artery stiffness; pulse pressure, the difference between the two blood pressure readings; neck artery thickness; calcium buildup in heart arteries; and fatty deposits in neck arteries.

The combined analysis identified 372 independent lead DNA variants across 249 genetic regions, including three regions newly implicated in vascular aging. Further analyses nominated 69 genes as potentially having causal roles. Analyses also highlighted processes involving substances released by senescent cells—cells that have stopped dividing—and the organization of material surrounding cells.

Why it matters

Blood vessel aging encompasses several changes rather than a single trait. The authors suggest that studying their shared genetics may inform more tailored prevention of age-related vascular disorders.

Caveats

This analysis used genetic associations and a modeled vascular-aging trait, not experiments testing cause and effect. Its findings came from European-ancestry populations and may not generalize to other ancestries.