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Midlife Work-Related Stress is Associated with Late-Life Gray Matter Volume Atrophy

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published version
Date
2017
Author(s)
Sindi, Shireen
Kåreholt, Ingemar
Spulber, Gabriela
Soininen, Hilkka
Kivipelto, Miia
Solomon, Alina
Unique identifier
10.3233/ADR-170035
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Citation
Sindi, Shireen. Kåreholt, Ingemar. Spulber, Gabriela. Soininen, Hilkka. Kivipelto, Miia. Solomon, Alina. (2017). Midlife Work-Related Stress is Associated with Late-Life Gray Matter Volume Atrophy.  Journal of Alzheimer's Disease Reports, 1 (1) , 219-227. 10.3233/ADR-170035.
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© IOS Press and the authors
Licensed under
CC BY-NC http://creativecommons.org/licenses/by-nc/4.0/
Abstract

Background:
Work-related stress has been associated with an increased dementia risk. However, less is known about the mechanisms that underlie these associations.

Objective:
The goal is to examine associations between midlife work-related stress and late-life structural brain alterations.

Methods:
The Cardiovascular Risk Factors, Aging, and Dementia (CAIDE) study participants were randomly selected from independent population-based surveys (mean age 50) in Finland. MRI measurements included gray matter (GM) volume, white matter lesions (WML) and medial temporal atrophy (MTA) (1st re-examination, n = 102); and GM volume, hippocampal volume, WML volume, cortical thickness, and MTA (2nd re-examination, n = 64). Work-related stress comprised a score from two questions administered in midlife.

Results:
Higher levels of midlife work-related stress were associated with lower GM volume (β= –0.077, p = 0.033) at the first re-examination, even after adjusting for several confounders. No significant associations were found with MTA, WML, or MRI measurements at the second re-examination.

Conclusion:
Previously shown associations of midlife work-related stress with dementia risk may be at least partly explained by associations with lower GM volume in late-life. The lack of associations at the second re-examination may indicate a critical time window for the effects of midlife work-related stress, and/or selective survival/participation.

Subjects
cortical thicknesss   gray matter volume   hippocampal volume   medial temporal lobe atrophy   stress   white matter lesion   
URI
https://erepo.uef.fi/handle/123456789/7276
Link to the original item
http://dx.doi.org/10.3233/ADR-170035
Publisher
IOS Press
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  • Terveystieteiden tiedekunta [1324]
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