Development of a prediction model for cognitive impairment of sarcopenia using multimodal neuroimaging in non-demented older adults.
Alzheimers Dement
; 20(7): 4868-4878, 2024 07.
Article
em En
| MEDLINE
| ID: mdl-38889242
ABSTRACT
INTRODUCTION:
Despite prior research on the association between sarcopenia and cognitive impairment in the elderly, a comprehensive model that integrates various brain pathologies is still lacking.METHODS:
We used data from 528 non-demented older adults with or without sarcopenia in the Catholic Aging Brain Imaging (CABI) database, containing magnetic resonance imaging scans, positron emission tomography scans, and clinical data. We also measured three key components of sarcopenia skeletal muscle index (SMI), hand grip strength (HGS), and the five times sit-to-stand test (5STS).RESULTS:
All components of sarcopenia were significantly correlated with global cognitive function, but cortical thickness and amyloid-beta (Aß) retention had distinctive relationships with each measure. In the path model, brain atrophy resulting in cognitive impairment was mediated by Aß retention for SMI and periventricular white matter hyperintensity for HGS, but directly affected by the 5STS.DISCUSSION:
Treatments targeting each sub-domain of sarcopenia should be considered to prevent cognitive decline. HIGHLIGHTS We identified distinct impacts of three sarcopenia measures on brain structure and Aß. Muscle mass is mainly associated with Aß and has an influence on the brain atrophy. Muscle strength linked with periventricular WMH and brain atrophy. Muscle function associated with cortical thinning in specific brain regions. Interventions on sarcopenia may be important to ease cognitive decline in the elderly.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
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Imageamento por Ressonância Magnética
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Força da Mão
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Sarcopenia
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Neuroimagem
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Disfunção Cognitiva
Limite:
Aged
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Aged80
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Female
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Humans
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Male
Idioma:
En
Revista:
Alzheimers Dement
Ano de publicação:
2024
Tipo de documento:
Article