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@ARTICLE{Aswendt:874714,
author = {Aswendt, Markus and Pallast, Niklas and Wieters, Frederique
and Baues, Mayan and Hoehn, Mathias and Fink, Gereon R},
title = {{L}esion {S}ize- and {L}ocation-{D}ependent {R}ecruitment
of {C}ontralesional {T}halamus and {M}otor {C}ortex
{F}acilitates {R}ecovery after {S}troke in {M}ice},
journal = {Translational stroke research},
volume = {12},
issn = {1868-601X},
address = {New York, NY},
publisher = {Springer},
reportid = {FZJ-2020-01626},
pages = {87-97},
year = {2021},
abstract = {Brain lesions caused by cerebral ischemia or hemorrhage
lead to a local breakdown of energy homeostasis followed by
irreversible cell death and long-term impairment.
Importantly, local brain lesions also generate remote
functional and structural disturbances, which contribute to
the behavioral deficit but also impact the recovery of
function. While spontaneous recovery has been associated
with endogenous repair mechanisms at the vascular, neural,
and immune cell levels, the impact of structural plasticity
on sensory-motor dysfunction and recovery thereof remains to
be elucidated by longitudinal imaging in a mouse model.
Here, we applied behavioral assessments, in vivo fiber
tracking, and histological validation in a photothrombotic
stroke mouse model. Atlas-based whole-brain structural
connectivity analysis and ex vivo histology revealed
secondary neurodegeneration in the ipsilesional brain areas,
mostly in the dorsal sensorimotor area of the thalamus.
Furthermore, we describe for the first time a lesion
size-dependent increase in structural connectivity between
the contralesional primary motor cortex and thalamus with
the ipsilesional cortex. The involvement of the
contralesional hemisphere was associated with improved
functional recovery relative to lesion size. This study
highlights the importance of in vivo fiber tracking and the
role of the contralesional hemisphere during spontaneous
functional improvement as a potential novel stroke biomarker
and therapeutic targets.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572) / 5252 -
Brain Dysfunction and Plasticity (POF4-525)},
pid = {G:(DE-HGF)POF3-572 / G:(DE-HGF)POF4-5252},
typ = {PUB:(DE-HGF)16},
pubmed = {32166716},
UT = {WOS:000563916500001},
doi = {10.1007/s12975-020-00802-3},
url = {https://juser.fz-juelich.de/record/874714},
}