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Hemostasis biomarkers and incident cognitive impairment: the REGARDS study
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Hemostasis biomarkers and incident cognitive impairment: the REGARDS study

Sr Gillett, La Mcclure, Pw Callas, El Thacker, Fw Unverzagt, Vg Wadley, Aj Letter and M. Cushman
Journal of thrombosis and haemostasis, v 16(7), pp 1259-1267
06 Jun 2018
PMID: 29733497
url
https://doi.org/10.1111/jth.14138View
Published, Version of Record (VoR)Open Access (Publisher-Specific) Open

Abstract

Article
BACKGROUND: Vascular risk factors are associated with cognitive impairment, a condition with substantial public health burden. We hypothesized that hemostasis biomarkers related to vascular disease would be associated with risk of incident cognitive impairment. METHODS: We performed a nested case control study including 1,082 participants with 3.5 years of follow-up in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study, a longitudinal cohort study of 30,239 black and white Americans ≥45 years old. Participants were free of stroke or cognitive impairment at baseline. Baseline D-dimer, fibrinogen, factor VIII, and protein C were measured in 495 cases who developed cognitive impairment during follow-up (based on abnormal scores on ≥2 of 3 cognitive tests) and 587 controls. RESULTS: Unadjusted ORs for incident cognitive impairment were 1.32 (95% CI 1.02, 1.70) for D-dimer >0.50 μg/mL, 1.83 (CI 1.24, 2.71) for fibrinogen >90(th) percentile, 1.63 (CI 1.11, 2.38) for factor VIII >90(th) percentile and 1.10 (CI 0.73, 1.65) for protein C < 10(th) percentile. There were no differences in associations by race or region. Adjustment for demographic, vascular and health behavior risk factors attenuated these associations. However, having at least 2 elevated biomarkers was associated with incident cognitive impairment, with an adjusted OR 1.73 (CI 1.10, 2.69). CONCLUSION: Elevated D-dimer, fibrinogen, and factor VIII were not associated with occurrence of cognitive impairment after multivariable adjustment; however, having at least 2 abnormal biomarkers was associated, suggesting the burden of these biomarkers is relevant.

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Collaboration types
Domestic collaboration
Web of Science research areas
Hematology
Peripheral Vascular Disease
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