Article (Scientific journals)
Association of quality of life with structural, functional and molecular brain imaging in community-dwelling older adults.
Ourry, Valentin; Gonneaud, Julie; Landeau, Brigitte et al.
2021In NeuroImage, 231, p. 117819
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Keywords :
Amyloid imaging; Multimodal neuroimaging; Neurodegeneration; Older adults; Quality of life; White matter microstructure
Abstract :
[en] BACKGROUND: As the population ages, maintaining mental health and well-being of older adults is a public health priority. Beyond objective measures of health, self-perceived quality of life (QoL) is a good indicator of successful aging. In older adults, it has been shown that QoL is related to structural brain changes. However, QoL is a multi-faceted concept and little is known about the specific relationship of each QoL domain to brain structure, nor about the links with other aspects of brain integrity, including white matter microstructure, brain perfusion and amyloid deposition, which are particularly relevant in aging. Therefore, we aimed to better characterize the brain biomarkers associated with each QoL domain using a comprehensive multimodal neuroimaging approach in older adults. METHODS: One hundred and thirty-five cognitively unimpaired older adults (mean age ± SD: 69.4 ± 3.8 y) underwent structural and diffusion magnetic resonance imaging, together with early and late florbetapir positron emission tomography scans. QoL was assessed using the brief version of the World Health Organization's QoL instrument, which allows measuring four distinct domains of QoL: self-perceived physical health, psychological health, social relationships and environment. Multiple regression analyses were carried out to identify the independent global neuroimaging predictor(s) of each QoL domain, and voxel-wise analyses were then conducted with the significant predictor(s) to highlight the brain regions involved. Age, sex, education and the other QoL domains were entered as covariates in these analyses. Finally, forward stepwise multiple regressions were conducted to determine the specific items of the relevant QoL domain(s) that contributed the most to these brain associations. RESULTS: Only physical health QoL was associated with global neuroimaging values, specifically gray matter volume and white matter mean kurtosis, with higher physical health QoL being associated with greater brain integrity. These relationships were still significant after correction for objective physical health and physical activity measures. No association was found with global brain perfusion or global amyloid deposition. Voxel-wise analyses revealed that the relationships with physical health QoL concerned the anterior insula and ventrolateral prefrontal cortex, and the corpus callosum, corona radiata, inferior frontal white matter and cingulum. Self-perceived daily living activities and self-perceived pain and discomfort were the items that contributed the most to these associations with gray matter volume and white matter mean kurtosis, respectively. CONCLUSIONS: Better self-perceived physical health, encompassing daily living activities and pain and discomfort, was the only QoL domain related to brain structural integrity including higher global gray matter volume and global white matter microstructural integrity in cognitively unimpaired older adults. The relationships involved brain structures belonging to the salience network, the pain pathway and the empathy network. While previous studies showed a link between objective measures of physical health, our findings specifically highlight the relevance of monitoring and promoting self-perceived physical health in the older population. Longitudinal studies are needed to assess the direction and causality of the relationships between QoL and brain integrity.
Disciplines :
Human health sciences: Multidisciplinary, general & others
Author, co-author :
Ourry, Valentin
Gonneaud, Julie
Landeau, Brigitte
Moulinet, Inès
Touron, Edelweiss
Dautricourt, Sophie
Le Du, Gwendoline
Mézenge, Florence
André, Claire
Bejanin, Alexandre
Sherif, Siya ;  Université de Liège - ULiège > GIGA CRC In vivo Imaging - Sleep and chronobiology
Marchant, Natalie L.
Paly, Léo
Poisnel, Géraldine
Vivien, Denis
Chocat, Anne
Quillard, Anne
Ferrand Devouge, Eglantine
de la Sayette, Vincent
Rauchs, Géraldine
Arenaza-Urquijo, Eider M.
Chételat, Gaël
More authors (12 more) Less
Language :
English
Title :
Association of quality of life with structural, functional and molecular brain imaging in community-dwelling older adults.
Publication date :
2021
Journal title :
NeuroImage
ISSN :
1053-8119
eISSN :
1095-9572
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
231
Pages :
117819
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.
Available on ORBi :
since 31 May 2021

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