Abstract
INTRODUCTION: Both micro- and macrostructural white matter (WM) abnormalities, particularly those related to axonal degeneration, are associated with cognitive decline in adults with Down syndrome (DS) prior to a diagnosis of Alzheimer disease. Neurofilament light chain (NfL) is a support protein within myelinated axons released into blood following axonal damage. In this study we investigated cross-sectional relationships between WM microstructural changes as measured by diffusion tensor imaging (DTI) and plasma NfL concentration in adults with DS without dementia.
METHODS: Thirty cognitively stable (CS) adults with DS underwent diffusion-weighted MRI scanning and plasma NfL measurement. DTI measures of select WM tracts were derived using automatic fiber tracking, and associations with plasma NfL were assessed using Spearman correlation coefficients.
RESULTS: Higher Plasma NfL was associated with greater altered diffusion measures of select tracts.
DISCUSSION: Early increases in plasma NfL may reflect early white matter microstructural changes prior to dementia in DS.
HIGHLIGHTS: The onset of such WM changes in DS has not yet been widely studied.WM microstructural properties correlated with plasma neurofilament light chain (NfL).NfL may reflect early, selective WM changes in adults with DS at high risk of developing AD.
Document Type
Article
Publication Date
1-1-2024
Digital Object Identifier (DOI)
https://doi.org/10.1002/dad2.70023
Funding Information
This work was sup- ported by the National Institutes of Health (Grants U19AG068054, U01AG051412, R01 NS026861, R01 NS114562, NS106384). The funding sources were not involved in the conduct of the research and/or the preparation of the article.
Repository Citation
Rosas, Herminia Diana; Mercaldo, Nathaniel David; Hasimoglu, Yasemin; Petersen, Melissa; Lewis, Lydia R.; Lai, Florence; Powell, David; Dhungana, Asim; Demir, Ali; Keater, David; Yassa, Michael; Brickman, Adam M.; and O'Bryant, Sid, "Association of plasma neurofilament light chain with microstructural white matter changes in Down syndrome" (2024). Neuroscience Faculty Publications. 85.
https://uknowledge.uky.edu/neurobio_facpub/85
Notes/Citation Information
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. © 2024 The Author(s). Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring published by Wiley Periodicals LLC on behalf of Alzheimer’s Association.