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Beydoun MA, Beydoun HA, Noren Hooten N, Meirelles O, Li Z, El-Hajj ZW, Weiss J, Maino Vieytes CA, Launer LJ, Evans MK, Zonderman AB. Hospital-treated prevalent infections, the plasma proteome and incident dementia among UK older adults. iScience 2023; 26:108526. [PMID: 38162022 PMCID: PMC10755048 DOI: 10.1016/j.isci.2023.108526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/18/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
The plasma proteome can mediate the association of hospital-treated infections with dementia incidence. We screened up to 37,269 UK Biobank participants aged 50-74 years for the presence of a prevalent hospital-treated infection, subsequently tested as a predictor for ≤1,463 plasma proteins and dementia incidence. Four-way decomposition models decomposed infection-dementia total effect into pure mediation, pure interaction, neither or both through the plasma proteome. Hospital-treated infections increased dementia two-fold. The strongest mediation effect was through the growth differentiation factor 15 (GDF15) protein. Top 17 proteomic mediators explained collectively 5% of the total effect, while pathway analysis of all mediators (k = 221 plasma proteins) revealed top pathways including the immune system, signal transduction, metabolism, disease and metabolism of proteins, with the GDF15 cluster reflecting most strongly the "transmembrane receptor protein tyrosine kinase signaling pathway". The association of hospital-treated infections with dementia was partially mediated through GDF15 and other plasma proteomic markers.
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Affiliation(s)
- May A. Beydoun
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Hind A. Beydoun
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
- AT Augusta Military Medical Center, Fort Belvoir, VA 22060, USA
| | - Nicole Noren Hooten
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Osorio Meirelles
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Zhiguang Li
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Ziad W. El-Hajj
- Department of Biology, McGill University, Montreal, QC, Canada
| | - Jordan Weiss
- Stanford Center on Longevity, Stanford University, Palo Alto, CA 94305, USA
| | - Christian A. Maino Vieytes
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Lenore J. Launer
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Michele K. Evans
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
| | - Alan B. Zonderman
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Intramural Research Program, NIA/NIH/IRP, Baltimore, MD 21224, USA
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