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@ARTICLE{Rauchmann:165257,
author = {Rauchmann, Boris Stephan and Brendel, Matthias and
Franzmeier, Nicolai and Trappmann, Lena and Zaganjori,
Mirlind and Ersoezlue, Ersin and Morenas-Rodriguez, Estrella
and Guersel, Selim and Burow, Lena and Kurz, Carolin and
Haeckert, Jan and Tatò, Maia and Utecht, Julia and Papazov,
Boris and Pogarell, Oliver and Janowitz, Daniel and Bürger,
Katharina and Ewers, Michael and Palleis, Carla and
Weidinger, Endy and Biechele, Gloria and Schuster, Sebastian
and Finze, Anika and Eckenweber, Florian and Rupprecht,
Rainer and Rominger, Axel and Goldhardt, Oliver and Grimmer,
Timo and Keeser, Daniel and Stoecklein, Sophia and Dietrich,
Olaf and Bartenstein, Peter and Levin, Johannes and
Höglinger, Günter and Perneczky, Robert},
title = {{M}icroglial {A}ctivation and {C}onnectivity in {A}lzheimer
{D}isease and {A}ging.},
journal = {Annals of neurology},
volume = {92},
number = {5},
issn = {0364-5134},
address = {Hoboken, NJ},
publisher = {Wiley-Blackwell},
reportid = {DZNE-2022-01550},
pages = {768 - 781},
year = {2022},
note = {CC BY-NC: https://creativecommons.org/licenses/by-nc/4.0/},
abstract = {Alzheimer disease (AD) is characterized by amyloid β (Aβ)
plaques and neurofibrillary tau tangles, but increasing
evidence suggests that neuroinflammation also plays a key
role, driven by the activation of microglia. Aβ and tau
pathology appear to spread along pathways of highly
connected brain regions, but it remains elusive whether
microglial activation follows a similar distribution
pattern. Here, we assess whether connectivity is associated
with microglia activation patterns.We included 32
Aβ-positive early AD subjects (18 women, 14 men) and 18
Aβ-negative age-matched healthy controls (10 women, 8 men)
from the prospective ActiGliA (Activity of Cerebral
Networks, Amyloid and Microglia in Aging and Alzheimer's
Disease) study. All participants underwent microglial
activation positron emission tomography (PET) with the
third-generation mitochondrial 18 kDa translocator protein
(TSPO) ligand [18 F]GE-180 and magnetic resonance imaging
(MRI) to measure resting-state functional and structural
connectivity.We found that inter-regional covariance in
TSPO-PET and standardized uptake value ratio was
preferentially distributed along functionally highly
connected brain regions, with MRI structural connectivity
showing a weaker association with microglial activation. AD
patients showed increased TSPO-PET tracer uptake bilaterally
in the anterior medial temporal lobe compared to controls,
and higher TSPO-PET uptake was associated with cognitive
impairment and dementia severity in a disease
stage-dependent manner.Microglial activation distributes
preferentially along highly connected brain regions, similar
to tau pathology. These findings support the important role
of microglia in neurodegeneration, and we speculate that
pathology spreads throughout the brain along vulnerable
connectivity pathways. ANN NEUROL 2022.},
keywords = {Male / Humans / Female / Alzheimer Disease: pathology /
Amyloid beta-Peptides: metabolism / Microglia: metabolism /
tau Proteins: metabolism / Ligands / Prospective Studies /
Positron-Emission Tomography: methods / Plaque, Amyloid:
metabolism / Brain: pathology / Receptors, GABA: metabolism
/ Amyloid beta-Peptides (NLM Chemicals) / tau Proteins (NLM
Chemicals) / Ligands (NLM Chemicals) / TSPO protein, human
(NLM Chemicals) / Receptors, GABA (NLM Chemicals)},
cin = {AG Simons / AG Haass old / Clinical Dementia Research
München / AG Höglinger 2},
ddc = {610},
cid = {I:(DE-2719)1110008 / I:(DE-2719)1110007 /
I:(DE-2719)1111016 / I:(DE-2719)1111015},
pnm = {353 - Clinical and Health Care Research (POF4-353) / 351 -
Brain Function (POF4-351) / 352 - Disease Mechanisms
(POF4-352)},
pid = {G:(DE-HGF)POF4-353 / G:(DE-HGF)POF4-351 /
G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36053756},
doi = {10.1002/ana.26465},
url = {https://pub.dzne.de/record/165257},
}