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@ARTICLE{Shrouder:268500,
author = {Shrouder, Joshua James and Calandra, Gian-Marco and Filser,
Severin and Varga, Daniel Peter and Besson-Girard, Simon and
Mamrak, Uta and Dorok, Maximilian and Bulut-Impraim, Buket
and Seker, Fatma Burcu and Gesierich, Benno and Laredo,
Fabio and Wehn, Antonia Clarissa and Khalin, Igor and Bayer,
Patrick and Liesz, Arthur and Gökce, Ozgun and Plesnila,
Nikolaus},
title = {{C}ontinued dysfunction of capillary pericytes promotes
no-reflow after experimental stroke in vivo.},
journal = {Brain},
volume = {147},
number = {3},
issn = {0006-8950},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DZNE-2024-00246},
pages = {1057 - 1074},
year = {2024},
abstract = {Incomplete reperfusion of the microvasculature
('no-reflow') after ischaemic stroke damages salvageable
brain tissue. Previous ex vivo studies suggest pericytes are
vulnerable to ischaemia and may exacerbate no-reflow, but
the viability of pericytes and their association with
no-reflow remains under-explored in vivo. Using longitudinal
in vivo two-photon single-cell imaging over 7 days, we
showed that $87\%$ of pericytes constrict during cerebral
ischaemia and remain constricted post reperfusion, and
$50\%$ of the pericyte population are acutely damaged.
Moreover, we revealed ischaemic pericytes to be
fundamentally implicated in capillary no-reflow by limiting
and arresting blood flow within the first 24 h post stroke.
Despite sustaining acute membrane damage, we observed that
over half of all cortical pericytes survived ischaemia and
responded to vasoactive stimuli, upregulated unique
transcriptomic profiles and replicated. Finally, we
demonstrated the delayed recovery of capillary diameter by
ischaemic pericytes after reperfusion predicted vessel
reconstriction in the subacute phase of stroke.
Cumulatively, these findings demonstrate that surviving
cortical pericytes remain both viable and promising
therapeutic targets to counteract no-reflow after ischaemic
stroke.},
keywords = {Humans / Stroke / Pericytes: physiology / Brain Ischemia /
Ischemic Stroke / Cerebral Infarction / cerebral ischaemia
(Other) / ischaemic stroke (Other) / no-reflow (Other) /
pericytes (Other) / reperfusion (Other)},
cin = {LMF},
ddc = {610},
cid = {I:(DE-2719)1040180},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38153327},
doi = {10.1093/brain/awad401},
url = {https://pub.dzne.de/record/268500},
}