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@ARTICLE{Seemiller:904374,
author = {Seemiller, Joseph and Bischof, Gerard Nisal and Hönig,
Merle and Tahmasian, Masoud and van Eimeren, Thilo and
Drzezga, Alexander and Initiative, the Alzheimer’s Disease
Neuroimaging},
title = {{I}ndication of retrograde tau spreading along {B}raak
stages and functional connectivity pathways},
journal = {European journal of nuclear medicine and molecular imaging},
volume = {48},
number = {7},
issn = {0340-6997},
address = {Heidelberg [u.a.]},
publisher = {Springer-Verl.},
reportid = {FZJ-2021-05944},
pages = {2272 - 2282},
year = {2021},
abstract = {Purpose: Tau pathology progression in Alzheimer's disease
(AD) is explained through the network degeneration
hypothesis and the neuropathological Braak stages; however,
the compatibility of these models remains unclear.Methods:
We utilized [18F]AV-1451 tau-PET scans of 39 subjects with
AD and 39 sex-matched amyloid-negative healthy controls (HC)
in the ADNI (Alzheimer's Disease Neuroimaging Initiative)
dataset. The peak cluster of tau-tracer uptake was
identified in each Braak stage of neuropathological tau
deposition and used to create a seed-based functional
connectivity network (FCN) using 198 HC subjects, to
identify healthy networks unaffected by
neurodegeneration.Results: Voxel-wise tau deposition was
both significantly higher inside relative to outside FCNs
and correlated significantly and positively with levels of
healthy functional connectivity. Within many isolated Braak
stages and regions, the correlation between tau and
intrinsic functional connectivity was significantly stronger
than it was across the whole brain. In this way, each peak
cluster of tau was related to multiple Braak stages
traditionally associated with both earlier and later stages
of disease.Conclusion: We show specificity of healthy FCN
topography for AD-pathological tau as well as positive
voxel-by-voxel correlations between pathological tau and
healthy functional connectivity. We propose a model of "up-
and downstream" functional tau progression, suggesting that
tau pathology evolves along functional connectivity networks
not only "downstream" (i.e., along the expected sequence of
the established Braak stages) but also in part "upstream" or
"retrograde" (i.e., against the expected sequence of the
established Braak stages), with pathology in earlier Braak
stages intensified by its functional relationship to later
disease stages.Keywords: Alzheimer’s disease; Braak stage;
Functional connectivity; Network degeneration hypothesis;
PET; Tau.},
cin = {INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-2-20090406},
pnm = {5253 - Neuroimaging (POF4-525) / 5254 - Neuroscientific
Data Analytics and AI (POF4-525)},
pid = {G:(DE-HGF)POF4-5253 / G:(DE-HGF)POF4-5254},
typ = {PUB:(DE-HGF)16},
pubmed = {33462630},
UT = {WOS:000608658400001},
doi = {10.1007/s00259-020-05183-1},
url = {https://juser.fz-juelich.de/record/904374},
}