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@ARTICLE{Leone:280972,
author = {Leone, Riccardo and Kobeleva, Xenia},
collaboration = {Initiative, Alzheimer's Disease Neuroimaging},
title = {{W}hite matter hyperintensities contribute to early
cortical thinning in addition to tau in aging.},
journal = {Neurobiology of aging},
volume = {155},
issn = {0197-4580},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DZNE-2025-01054},
pages = {66 - 77},
year = {2025},
abstract = {White matter hyperintensities (WMH) are associated with
cortical thinning in distant brain regions. However, it is
currently unclear how WMH affect neurodegeneration in early
Alzheimer's disease (AD). Here, we investigated associations
between WMH and cortical thickness in temporal regions
involved in early AD (AD cortical signature), while
correcting for regional amyloid and tau accumulation
assessed by PET. We performed cross-sectional (n = 551), and
longitudinal (n = 125) analyses in older adults without
dementia, also stratified by amyloid positivity. We
evaluated WMH volume - as a measure of the global burden of
WMH-related cerebrovascular pathology (GB-WMH) - and
investigated the role of deep versus periventricular WMH. We
also tested whether a higher focal burden of WMH in specific
tracts connected to AD signature regions (FB-WMH) would lead
to greater cortical thinning than expected solely from
GB-WMH. We performed exploratory analyses in other brain
regions to check the specificity of our findings to the
temporal AD signature. GB-WMH damage, especially involving
periventricular WMH, was cross-sectionally (not
longitudinally) associated with cortical thinning in the
fusiform, inferior and middle temporal gyri. Stronger
associations were found in amyloid-positive individuals,
including for the entorhinal cortex. Effects were mostly
confined to regions of the temporal AD signature. FB-WMH did
not yield higher cortical thinning than expected solely by
GB-WMH. Cerebrovascular disease is associated with cortical
thinning of temporal regions involved in early AD.
Interventions aimed at improving cerebrovascular health
might help to mitigate neurodegeneration in these regions.},
keywords = {AD (Other) / Alzheimer’s Disease (Other) / Amyloid
(Other) / Copathologies (Other) / Cortical thickness (Other)
/ Disconnections (Other) / Tau (Other) / WMH (Other)},
cin = {Clinical Research (Bonn) / AG Spottke},
ddc = {610},
cid = {I:(DE-2719)1011001 / I:(DE-2719)1011103},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40712373},
doi = {10.1016/j.neurobiolaging.2025.07.007},
url = {https://pub.dzne.de/record/280972},
}