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@ARTICLE{Veltkamp:141325,
author = {R. Veltkamp and S. Uhlmann and M. Marinescu and C. Sticht
and D. Finke and N. Gretz and H.-J. Gröne$^*$ and H. A.
Katus and J. Backs and L. H. Lehmann},
title = {{E}xperimental ischaemic stroke induces transient cardiac
atrophy and dysfunction.},
journal = {Journal of cachexia, sarcopenia and muscle},
volume = {10},
number = {1},
issn = {2190-5991},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {DKFZ-2018-01844},
pages = {54-62},
year = {2019},
abstract = {Stroke can lead to cardiac dysfunction in patients, but the
mechanisms underlying the interaction between the injured
brain and the heart are poorly understood. The objective of
the study is to investigate the effects of experimental
murine stroke on cardiac function and molecular signalling
in the heart.Mice were subjected to filament-induced left
middle cerebral artery occlusion for 30 or 60 min or sham
surgery and underwent repetitive micro-echocardiography.
Left ventricular contractility was reduced early (24-72 h)
but not late (2 months) after brain ischaemia. Cardiac
dysfunction was accompanied by a release of high-sensitive
cardiac troponin (hsTNT (ng/ml): d1: 7.0 ± 1.0 vs.
25.0 ± 3.2*; d3: 7.3 ± 1.1 vs. 52.2 ± 16.7*;
d14: 5.7 ± 0.8 vs. 5.2 ± 0.3; sham vs. 60 min.
MCAO; mean ± SEM; *p < 0.05); reduced heart weight
(heart weight/tibia length ratio: d1: 6.9 ± 0.2 vs.
6.4 ± 0.1*; d3: 6.7 ± 0.2 vs. 5.8 ± 0.1*;
d14: 6.7 ± 0.2 vs. 6.4 ± 03; sham vs. 60 min.
MCAO; mean ± SEM; *p < 0.05); resulting from
cardiomyocyte atrophy (cardiomyocyte size: d1:
$12.8\% ± 0.002**;$ d3: $13.5\% ± 0.002**;$ 14d:
$6.3\% ± 0.003*;$ 60 min. MCAO vs. sham;
mean ± SEM; **p < 0.01; *p < 0.05), accompanied
by increased atrogin-1 and the E3 ubiquitin ligase murf-1.
Net norepinephrine but not synthesis was increased,
suggesting a reduced norepinephrine release or an increase
of norepinephrine re-uptake, resulting in a functional
denervation. Transcriptome analysis in cardiac tissue
identified the transcription factor peroxisome
proliferator-activated receptor gamma as a potential
mediator of stroke-induced transcriptional dysregulation
involved in cardiac atrophy.Stroke induces a complex
molecular response in the heart muscle with immediate but
transient cardiac atrophy and dysfunction.},
cin = {G130},
ddc = {610},
cid = {I:(DE-He78)G130-20160331},
pnm = {322 - Genetics and Pathophysiology (POF3-322)},
pid = {G:(DE-HGF)POF3-322},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30378296},
doi = {10.1002/jcsm.12335},
url = {https://inrepo02.dkfz.de/record/141325},
}