Plasma proteomic biomarkers as mediators or moderators for the association between poor cardiovascular health and white matter microstructural integrity: The UK Biobank study
May A. Beydoun, Hind A. Beydoun, Nicole Noren Hooten, Zhiguang Li, Yi-Han Hu, Michael F. Georgescu, Sharmin Hossain, Toshiko Tanaka, Mustapha Bouhrara, Christian A. Maino Vieytes, Marie T. Fanelli-Kuczmarski, Lenore J. Launer, Michele K. Evans, Alan B. Zonderman
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Abstract
INTRODUCTION
The plasma proteome's mediating or moderating roles in the association between poor cardiovascular health (CVH) and brain white matter (WM) microstructural integrity are largely unknown.
METHODS
Data from 3953 UK Biobank participants were used (40–70 years, 2006–2010), with a neuroimaging visit between 2014 and 2021. Poor CVH was determined using Life's Essential 8 (LE8) and reversing standardized z-scores (LE8z_rev). The plasma proteome was examined as a potential mediator or moderator of LE8z_rev’s effects on quantitative diffusion-weighted magnetic resonance imaging (dMRI) metrics.
RESULTS
LE8z_rev was significantly associated with deteriorated WM microstructural integrity, as reflected by lower tract-averaged fractional anisotropy (dMRI-FAmean), (β ± standared error (SE): −0.00152 ± 0.0003, p < 0.001) and higher tract-averaged orientation dispersion (dMRI-ODmean), (β ± SE:+0.00081 ± 0.00017, p < 0.001). Ten strongly mediating plasma proteins of 1463 were identified, with leptin as the principal driver.
DISCUSSION
Poor CVH is linked to poor WM microstructural integrity measures (lower FAmean and higher ODmean), mostly mediated through leptin.
Highlights
Up to 3953 UK Biobank participants were selected for this study.
Poor cardiovascular health (CVH) was determined using Life's Essential 8.
The plasma proteome was examined as a potential mediator or moderator of poor CVH's effect on dMRI metrics.
Ten plasma proteins were identified with strong mediating effects, with leptin being the principal driver.
期刊介绍：
Alzheimer's & Dementia is a peer-reviewed journal that aims to bridge knowledge gaps in dementia research by covering the entire spectrum, from basic science to clinical trials to social and behavioral investigations. It provides a platform for rapid communication of new findings and ideas, optimal translation of research into practical applications, increasing knowledge across diverse disciplines for early detection, diagnosis, and intervention, and identifying promising new research directions. In July 2008, Alzheimer's & Dementia was accepted for indexing by MEDLINE, recognizing its scientific merit and contribution to Alzheimer's research.
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