Prediction of telomere length and telomere attrition using a genetic risk score: The multi-ethnic study of atherosclerosis (MESA)

Autor: Cecilia Castro-Diehl, Jennifer A. Smith, Wei Zhao, Xu Wang, Bhramar Mukherjee, Teresa Seeman, Belinda L. Needham
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Frontiers in Aging, Vol 3 (2022)
Druh dokumentu: article
ISSN: 2673-6217
DOI: 10.3389/fragi.2022.1021051
Popis: Background: Short telomere length (TL) and telomere attrition (TA) have been associated with age-related diseases.Objective: We assessed whether a genetic risk score for short TL (GRS-TL) combining seven TL-associated genetic variants identified in a European-ancestry genome-wide association study (GWAS) was associated with TL and TA over 10 years.Methods: Relative TL (T/S ratio) was measured by the quantitative polymerase chain reaction method for a sample of white, African American, and Hispanic participants, who attended Exam 1 and/or 5 of the Multi-Ethnic Study of Atherosclerosis (MESA). Our final sample included 1,227 participants for the TL analysis and 1,138 for the TA analysis. Participants were 45–84 years at Exam 1. We used a linear mixed effects model and adjusted for age, sex, and population structure. Models were stratified by race/ethnicity.Results: In the TL analysis, higher GRS-TL significantly predicted shorter TL (estimates = -0.18 [S.E. = 0.08], p = 0.02 for white; -0.18 [0.07], p < 0.01 for African American; and -0.13 [0.05], p = 0.02 for Hispanic) in fully adjusted models. In the TA analysis, no association between GRS-TL and TA over 10 years was found.Conclusion: Although GRS-TL was developed in European-ancestry populations, it was significantly associated with TL (but not TA) in all three race/ethnic groups examined.
Databáze: Directory of Open Access Journals