Year: 2019
Type: article
Study design: Observational Study
Abstract: Understanding how metabolites are longitudinally influenced by age and sex could facilitate the identification of metabolomic profiles and trajectories that indicate disease risk. We investigated the metabolomics of age and sex using longitudinal plasma samples from the Wisconsin Registry for Alzheimer's Prevention (WRAP), a cohort of participants who were dementia free at enrollment. Metabolomic profiles were quantified for 2,344 fasting plasma samples among 1,212 participants, each with up to three study visits. Of 1,097 metabolites tested, 623 (56.8%) were associated with age and 695 (63.4%) with sex after correcting for multiple testing. Approximately twice as many metabolites were associated with age in stratified analyses of women versus men, and 68 metabolite trajectories significantly differed by sex, most notably including sphingolipids, which tended to increase in women and decrease in men with age. Using genome-wide genotyping, we also report the heritabilities of metabolites investigated, which ranged dramatically (0.2-99.2%); however, the median heritability of 36.2% suggests that many metabolites are highly influenced by a complex combination of genomic and environmental influences. These findings offer a more profound description of the aging process and may inform many new hypotheses regarding the role metabolites play in healthy and accelerated aging.
Source: Aging
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
Funders: Helen Bader Foundation, Northwestern Mutual Foundation, Extendicare Foundation, Northwestern University, National Institutes of Health, National Institute on Aging, U.S. National Library of Medicine, National Center for Advancing Translational Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development
Awards: Wisconsin Registry for Alzheimer's Prevention, Genomic and Metabolomic Data Integration in a Longitudinal Cohort at Risk for Alzheimer's Disease, Institutional Clinical and Translational Science Award, Wisconsin Alzheimer's Disease Research Center, Center for Demography and Ecology, University of Wisconsin Institute for Clinical and Translational Research, Computation and Informatics in Biology and Medicine, Wisconsin Registry for Alzheimer's Prevention
OpenAlex ID: W2949617913