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Epigenome-wide association study of level and change in cognitive abilities from midlife through late life

Karlsson, Ida K. (författare)
Karolinska Institutet,Jönköping University,HHJ, Institutet för gerontologi,HHJ. ARN-J (Aging Research Network - Jönköping),Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ; Institute of Gerontology and Aging Research Network – Jönköping (ARN-J), School of Health and Welfare, Jönköping University, Sweden
Ericsson, Malin (författare)
Karolinska Institutet
Wang, Yunzhang (författare)
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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Jylhävä, Juulia (författare)
Karolinska Institutet
Hägg, Sara (författare)
Karolinska Institutet
Dahl Aslan, Anna K., 1975- (författare)
Karolinska Institutet,Jönköping University,Högskolan i Skövde,Institutionen för hälsovetenskaper,Forskningsmiljön hälsa, hållbarhet och digitalisering,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ; Institute of Gerontology and Aging Research Network – Jönköping (ARN-J), School of Health and Welfare, Jönköping University, Sweden,Välbefinnande vid långvariga hälsoproblem (WeLHP), Wellbeing in Long-term Health Problems,HHJ, Institutet för gerontologi,HHJ. ARN-J (Aging Research Network - Jönköping)
Reynolds, Chandra A. (författare)
Department of Psychology, University of California, Riverside, United States
Pedersen, Nancy L. (författare)
Karolinska Institutet
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 (creator_code:org_t)
2021-04-21
2021
Engelska.
Ingår i: Clinical Epigenetics. - : Springer Nature. - 1868-7075 .- 1868-7083. ; 13:1
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Background: Epigenetic mechanisms are important in aging and may be involved in late-life changes in cognitive abilities. We conducted an epigenome-wide association study of leukocyte DNA methylation in relation to level and change in cognitive abilities, from midlife through late life in 535 Swedish twins. Results: Methylation levels were measured with the Infinium Human Methylation 450 K or Infinium MethylationEPIC array, and all sites passing quality control on both arrays were selected for analysis (n = 250,816). Empirical Bayes estimates of individual intercept (age 65), linear, and quadratic change were obtained from latent growth curve models of cognitive traits and used as outcomes in linear regression models. Significant sites (p < 2.4 × 10–7) were followed up in between-within twin pair models adjusting for familial confounding and full-growth modeling. We identified six significant associations between DNA methylation and level of cognitive abilities at age 65: cg18064256 (PPP1R13L) with processing speed and spatial ability; cg04549090 (NRXN3) with spatial ability; cg09988380 (POGZ), cg25651129 (-), and cg08011941 (ENTPD8) with working memory. The genes are involved in neuroinflammation, neuropsychiatric disorders, and ATP metabolism. Within-pair associations were approximately half that of between-pair associations across all sites. In full-growth curve models, associations between DNA methylation and cognitive level at age 65 were of small effect sizes, and associations between DNA methylation and longitudinal change in cognitive abilities of very small effect sizes. Conclusions: Leukocyte DNA methylation was associated with level, but not change in cognitive abilities. The associations were substantially attenuated in within-pair analyses, indicating they are influenced in part by genetic factors. 

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Medicinsk genetik (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Medical Genetics (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Arbetsmedicin och miljömedicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Occupational Health and Environmental Health (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Annan medicin och hälsovetenskap -- Gerontologi, medicinsk/hälsovetenskaplig inriktning (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Other Medical and Health Sciences -- Gerontology, specialising in Medical and Health Sciences (hsv//eng)

Nyckelord

Aging
Cognition
DNA methylation
EWAS
Longitudinal
Wellbeing in long-term health problems (WeLHP)
Välbefinnande vid långvariga hälsoproblem (WeLHP)

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