AI Article Synopsis
- Both micro- and macrostructural white matter abnormalities in adults with Down syndrome (DS) are connected to cognitive decline and can occur before Alzheimer's disease diagnosis.
- This study explored the relationship between white matter changes, assessed through diffusion tensor imaging (DTI), and plasma neurofilament light chain (NfL) levels in cognitively stable adults with DS.
- Results indicated that higher plasma NfL levels were associated with more significant alterations in white matter diffusion measures, suggesting that early NfL increases might signal early microstructural changes in the brain before dementia onset in individuals with DS.
Article 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.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11582681 | PMC |
| http://dx.doi.org/10.1002/dad2.70023 | DOI Listing |
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