Mild Parkinsonian Signs, Energy Decline, and Striatal Volume in Community-Dwelling Older Adults.
Disablement process
Epidemiology
Neuroimaging
Normative aging
Journal
The journals of gerontology. Series A, Biological sciences and medical sciences
ISSN: 1758-535X
Titre abrégé: J Gerontol A Biol Sci Med Sci
Pays: United States
ID NLM: 9502837
Informations de publication
Date de publication:
01 04 2022
01 04 2022
Historique:
received:
09
01
2021
pubmed:
29
5
2021
medline:
6
4
2022
entrez:
28
5
2021
Statut:
ppublish
Résumé
Mild parkinsonian signs (MPS), highly prevalent in older adults, predict disability. It is unknown whether energy decline, a predictor of mobility disability, is also associated with MPS. We hypothesized that those with MPS had greater decline in self-reported energy level (SEL) than those without MPS, and that SEL decline and MPS share neural substrates. Using data from the Health, Aging and Body Composition Study, we analyzed 293 Parkinson's disease-free participants (83 ± 3 years old, 39% Black, 58% women) with neuroimaging data, MPS evaluation by Unified Parkinson Disease Rating Scale in 2006-2008, and ≥3 measures of SEL since 1999-2000. Individual SEL slopes were computed via linear mixed models. Associations of SEL slopes with MPS were tested using logistic regression models. Associations of SEL slope with volume of striatum, sensorimotor, and cognitive regions were examined using linear regression models adjusted for normalized total gray matter volume. Models were adjusted for baseline SEL, mobility, demographics, and comorbidities. Compared to those without MPS (n = 165), those with MPS (n = 128) had 37% greater SEL decline in the prior 8 years (p = .001). Greater SEL decline was associated with smaller right striatal volume (adjusted standardized β = 0.126, p = .029). SEL decline was not associated with volumes in other regions. The association of SEL decline with MPS remained similar after adjustment for right striatal volume (adjusted odds ratio = 2.03, 95% CI: 1.16-3.54). SEL decline may be faster in those with MPS. Striatal atrophy may be important for declining energy but does not explain the association with MPS.
Sections du résumé
BACKGROUND
Mild parkinsonian signs (MPS), highly prevalent in older adults, predict disability. It is unknown whether energy decline, a predictor of mobility disability, is also associated with MPS. We hypothesized that those with MPS had greater decline in self-reported energy level (SEL) than those without MPS, and that SEL decline and MPS share neural substrates.
METHOD
Using data from the Health, Aging and Body Composition Study, we analyzed 293 Parkinson's disease-free participants (83 ± 3 years old, 39% Black, 58% women) with neuroimaging data, MPS evaluation by Unified Parkinson Disease Rating Scale in 2006-2008, and ≥3 measures of SEL since 1999-2000. Individual SEL slopes were computed via linear mixed models. Associations of SEL slopes with MPS were tested using logistic regression models. Associations of SEL slope with volume of striatum, sensorimotor, and cognitive regions were examined using linear regression models adjusted for normalized total gray matter volume. Models were adjusted for baseline SEL, mobility, demographics, and comorbidities.
RESULTS
Compared to those without MPS (n = 165), those with MPS (n = 128) had 37% greater SEL decline in the prior 8 years (p = .001). Greater SEL decline was associated with smaller right striatal volume (adjusted standardized β = 0.126, p = .029). SEL decline was not associated with volumes in other regions. The association of SEL decline with MPS remained similar after adjustment for right striatal volume (adjusted odds ratio = 2.03, 95% CI: 1.16-3.54).
CONCLUSION
SEL decline may be faster in those with MPS. Striatal atrophy may be important for declining energy but does not explain the association with MPS.
Identifiants
pubmed: 34049395
pii: 6287945
doi: 10.1093/gerona/glab150
pmc: PMC8974349
doi:
Types de publication
Journal Article
Research Support, N.I.H., Intramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
800-806Subventions
Organisme : NINR NIH HHS
ID : R01 NR012459
Pays : United States
Organisme : NIA NIH HHS
ID : R01 AG028050
Pays : United States
Organisme : NIH HHS
Pays : United States
Organisme : Intramural Research Program
Organisme : NIA Contracts
ID : N01-AG-2101
Organisme : NIA NIH HHS
ID : T32 AG055381
Pays : United States
Informations de copyright
© The Author(s) 2021. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
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