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Relationship of established cardiovascular risk factors and peripheral biomarkers on cognitive function in adults at risk of cognitive deterioration


Lai, MMY and Sharman, MJ and Ames, DJ and Ellis, KA and Cox, KL and Hepworth, G and Desmond, P and Cyarto, EV and Martins, RN and Masters, CL and Lautenschlager, NT, Relationship of established cardiovascular risk factors and peripheral biomarkers on cognitive function in adults at risk of cognitive deterioration, Journal of Alzheimer's Disease, 74, (1) pp. 163-171. ISSN 1387-2877 (2020) [Refereed Article]


Copyright Statement

Copyright 2020 IOS Press and the Authors

DOI: doi:10.3233/JAD-190953


Background: There is a paucity of information on the role of microvascular and inflammatory biomarkers in cognitive dysfunction.

Objective: This study sought to evaluate the relationships between established and a number of peripheral biomarkers on cognitive patterns in 108 older adults with memory complaints.

Methods: Participants in the AIBL Active study aged 60 years and older with at least one vascular risk factor and memory complaints completed a neuropsychological test battery and provided cross-sectional health data. Linear regression models adjusted for covariates examined associations between cognitive performance and a panel of vascular risk factors (Framingham cardiovascular scores, hs-CRP, homocysteine, fasting glucose, LDL-cholesterol) and peripheral biomarkers (TNF-α, BDNF, VCAM-1, ICAM-1, PAI-1, CD40L).

Results: Higher fasting glucose and homocysteine levels were independent factors associated with poorer performance in Trail Making Test (TMT) B (adjusted β= 0.400.10 and 0.430.09, respectively). Increasing homocysteine levels were weakly associated with poorer global cognition and delayed recall (adjusted β= 0.230.10 and -0.200.10 respectively). Increasing Framingham cardiovascular scores were related to poorer performance in TMT B (β = 0.420.19). There was early evidence of associations between increasing plasma TNF-α and poorer TMT B (adjusted β = 0.210.10) and between increasing BDNF and better global cognition (β= -0.200.09).

Conclusion: This study provides evidence to support the associations between vascular risk factors (Framingham scores, fasting glucose, and homocysteine) and poorer cognitive functions. Additionally, we measured several peripheral biomarkers to further investigate their associations with cognition. The relationship between TNF-α, BDNF, and cognitive performance in various domains may offer new insights into potential mechanisms in vascular cognitive impairment.

Item Details

Item Type:Refereed Article
Keywords:BDNF, TNF-α, biomarkers, cardiovascular disease, cognitive impairment, homocysteine, vascular risk factors
Research Division:Biomedical and Clinical Sciences
Research Group:Neurosciences
Research Field:Neurology and neuromuscular diseases
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Sharman, MJ (Dr Matt Sharman)
ID Code:140440
Year Published:2020
Web of Science® Times Cited:8
Deposited By:Health Sciences
Deposited On:2020-08-18
Last Modified:2022-08-23
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