A1 Journal article (refereed)
The Association Between Epigenetic Clocks and Physical Functioning in Older Women : A 3-Year Follow-up (2022)


Föhr, T., Törmäkangas, T., Lankila, H., Viljanen, A., Rantanen, T., Ollikainen, M., Kaprio, J., & Sillanpää, E. (2022). The Association Between Epigenetic Clocks and Physical Functioning in Older Women : A 3-Year Follow-up. Journals of Gerontology Series A : Biological Sciences and Medical Sciences, 77(8), 1569-1576. https://doi.org/10.1093/gerona/glab270


JYU authors or editors


Publication details

All authors or editors: Föhr, Tiina; Törmäkangas, Timo; Lankila, Hannamari; Viljanen, Anne; Rantanen, Taina; Ollikainen, Miina; Kaprio, Jaakko; Sillanpää, Elina

Journal or series: Journals of Gerontology Series A : Biological Sciences and Medical Sciences

ISSN: 1079-5006

eISSN: 1758-535X

Publication year: 2022

Publication date: 20/09/2021

Volume: 77

Issue number: 8

Pages range: 1569-1576

Publisher: Oxford University Press

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1093/gerona/glab270

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82771


Abstract

Background
Epigenetic clocks are composite markers developed to predict chronological age or mortality risk from DNA methylation (DNAm) data. The present study investigated the associations between four epigenetic clocks (Horvath’s and Hannum’s DNAmAge and DNAm GrimAge and PhenoAge) and physical functioning during a three-year follow-up.

Methods
We studied 63–76-year-old women (n = 413) from the Finnish Twin Study on Aging. DNAm was measured from blood samples at baseline. Age acceleration (AgeAccel) i.e. discrepancy between chronological age and DNAm age was determined as residuals from linear model. Physical functioning was assessed under standardized laboratory conditions at baseline and at follow-up. A cross-sectional analysis was performed with path models, and a longitudinal analysis was conducted with repeated measures linear models. A nonrandom missing data analysis was performed.

Results
In comparison to the other clocks, GrimAgeAccel was more strongly associated with physical functioning. At baseline, GrimAgeAccel was associated with lower performance in the Timed Up and Go (TUG) test and the six-minute walk test. At follow-up, significant associations were observed between GrimAgeAccel and lowered performance in the TUG, six-minute and 10-meter walk tests, and knee extension and ankle plantar flexion strength tests.

Conclusions
The DNAm GrimAge, a novel estimate of biological aging, associated with decline in physical functioning over the three-year follow-up in older women. However, associations between chronological age and physical function phenotypes followed similar pattern. Current epigenetic clocks do not provide strong benefits in predicting the decline of physical functioning at least during a rather short follow-up period and restricted age-range.


Keywords: ageing; epigenetics; DNA methylation; physical functioning

Free keywords: epigenetic clock; biological aging


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2021

Preliminary JUFO rating: 3


Last updated on 2022-20-09 at 15:59