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Author (up) Osthus, I.B.O.; Lydersen, S.; Dalen, H.; Nauman, J.; Wisloff, U.
Title Association of Telomere Length With Myocardial Infarction: A Prospective Cohort From the Population Based HUNT 2 Study Type Journal Article
Year 2017 Publication Progress in Cardiovascular Diseases Abbreviated Journal Prog Cardiovasc Dis
Volume 59 Issue 6 Pages 649-655
Keywords Age Factors; Aged; Aged, 80 and over; Female; Genetic Markers; Humans; Incidence; Linear Models; Male; Multivariate Analysis; Myocardial Infarction/diagnosis/epidemiology/*genetics; Norway/epidemiology; Polymerase Chain Reaction; Predictive Value of Tests; Prognosis; Proportional Hazards Models; Prospective Studies; Risk Factors; Sex Factors; Telomere/*genetics; *Telomere Homeostasis; Time Factors; Cardiovascular diseases; Myocardial infarction; Prevention; Risk factors; Telomeres
Abstract As possible markers of biological age, telomere length (TL) has been associated with age-related diseases such as myocardial infarction (MI) with conflicting findings. We sought to assess the relationship between TL and risk of future MI in 915 healthy participants (51.7% women) 65 years or older from a population-based prospective cohort (the HUNT 2 study, Norway). Mean TL was measured by quantitative PCR expressed as relative T (telomere repeat copy number) to S (single copy gene number) ratio, and log-transformed. During a mean follow up of 13.0 (SD, 3.2) years and 11,923 person-years, 82 participants were diagnosed with MI. We used Cox proportional hazard regressions to estimate hazard ratios (HR) and 95% confidence interval (CI). Relative TL was associated with age in women (P=0.01), but not in men (P=0.43). Using relative TL as a continuous variable, we observed a higher risk of MI in participants with longer telomeres with HRs of 2.46 (95% CI; 1.13 to 4.54) in men, and 2.93 (95% CI; 1.41 to 6.10) in women. Each 1-SD change in relative TL was associated with an HR of 1.54 (95% CI; 1.15 to 2.06) and 1.67 (95% CI; 1.18 to 2.37) in men and women, respectively. Compared with the bottom tertile of relative TL, HR of incident MI in top tertile was 2.71 (95% CI; 1.25 to 5.89) in men, and 3.65 (95% CI; 1.35 to 9.90) in women. Longer telomeres in healthy participants 65 years or older are associated with a high risk of incident MI. Future large scale prospective studies are needed to confirm these findings and explore the potential association between TL and MI.
Address K. G. Jebsen Center of Exercise in Medicine at the Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway; School of Human Movement & Nutrition Sciences, University of Queensland, Australia
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0033-0620 ISBN Medium
Area Expedition Conference
Notes PMID:28442329 Approved no
Call Number HUNT @ maria.stuifbergen @ Serial 1968
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