The association of body mass index and body composition with plasma amyloid beta levels.
Brain Commun
; 5(5): fcad263, 2023.
Article
em En
| MEDLINE
| ID: mdl-37901043
ABSTRACT
Blood-based analysis of amyloid-ß is increasingly applied to incrementally establish diagnostic tests for Alzheimer's disease. To this aim, it is necessary to determine factors that can alter blood-based concentrations of amyloid-ß. We cross-sectionally analysed amyloid-ß-40 and amyloid-ß-42 concentrations and the 40/42 ratio in 440 community-dwelling adults and associations with body mass index, waist-to-height ratio and body composition assessed using bioelectrical impedance analysis. Body mass index and waist-to-height ratio were inversely associated with plasma amyloid-ß-42 concentrations. Body fat mass, but not body cell mass and extracellular mass, was inversely associated with amyloid-ß-42 levels. The results indicate that plasma concentrations of amyloid-ß-42 are lower in those with increased body mass index and body fat, and associations with amyloid-ß-40 did not reach significance after controlling for multiple testing. The findings support the use of body mass index as an easy-to-measure factor that should be accounted for in diagnostic models for plasma amyloid-ß.
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1
Base de dados:
MEDLINE
Idioma:
En
Revista:
Brain Commun
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Alemanha