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Fornix fractional anisotropy mediates the association between Mediterranean diet adherence and memory four years later in older adults without dementia.

Authors :
Ruiz-Rizzo AL
Finke K
Damoiseaux JS
Bartels C
Buerger K
Cosma NC
Dechent P
Dobisch L
Ewers M
Fliessbach K
Frommann I
Glanz W
Goerss D
Hetzer S
Incesoy EI
Janowitz D
Kilimann I
Laske C
van Lent DM
Munk MHJ
Peters O
Priller J
Ramirez A
Rostamzadeh A
Roy N
Scheffler K
Schneider A
Spottke A
Spruth EJ
Teipel S
Wagner M
Wiltfang J
Yakupov R
Jessen F
Duezel E
Perneczky R
Rauchmann BS
Source :
Neurobiology of aging [Neurobiol Aging] 2024 Apr; Vol. 136, pp. 99-110. Date of Electronic Publication: 2024 Feb 02.
Publication Year :
2024

Abstract

Here, we investigated whether fractional anisotropy (FA) of hippocampus-relevant white-matter tracts mediates the association between baseline Mediterranean diet adherence (MeDiAd) and verbal episodic memory over four years. Participants were healthy older adults with and without subjective cognitive decline and patients with amnestic mild cognitive impairment from the DELCODE cohort study (n = 376; age: 71.47 ± 6.09 years; 48.7 % female). MeDiAd and diffusion data were obtained at baseline. Verbal episodic memory was assessed at baseline and four yearly follow-ups. The associations between baseline MeDiAd and white matter, and verbal episodic memory's mean and rate of change over four years were tested with latent growth curve modeling. Baseline MeDiAd was associated with verbal episodic memory four years later (95 % confidence interval, CI [0.01, 0.32]) but not with its rate of change over this period. Baseline Fornix FA mediated - and, thus, explained - that association (95 % CI [0.002, 0.09]). Fornix FA may be an appropriate response biomarker of Mediterranean diet interventions on verbal memory in older adults.<br />Competing Interests: Conflict of interest Nothing to report.<br /> (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1558-1497
Volume :
136
Database :
MEDLINE
Journal :
Neurobiology of aging
Publication Type :
Academic Journal
Accession number :
38340637
Full Text :
https://doi.org/10.1016/j.neurobiolaging.2024.01.012