ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2026
Brain regional susceptibility to tauopathy in individuals at risk for chronic traumatic encephalopathy.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionChronic traumatic encephalopathy (CTE) is a tauopathy linked to repetitive head impacts. Factors influencing brain regional susceptibility to tau deposition and spreading remain unclear.
methodsWe used three datasets: [18F]flortaucipir positron emission tomography (PET) in 157 former professional American football players and 53 controls (DIAGNOSE CTE); cortical myelin water fractions (MWF) in 50 healthy individuals (Myelin Water Atlas); and white matter (WM) tract MWF and functional connectivity (FC) in 100 healthy individuals (Human Connectome Project). We tested associations between tau-PET uptake and covariance in football players and typical cortical gray matter (GM) MWF, WM tract MWF, and FC.
resultsCortical regions with lower typical GM MWF showed higher tau-PET uptake (β = -0.399, p = 0.001). WM tracts with lower typical MWF were associated with higher tau-PET covariance (β = -0.238, p < 0.001). Higher typical FC was associated with higher tau-PET covariance (β = 0.447, p < 0.001). DISCUSSION: In former football players at risk for CTE, regional susceptibility to tau deposition may be driven by low myelin and high FC.
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