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SHR Neuro Krebs Kardio Lipid Stoffw Microb

Djalinac, N; Kolesnik, E; Maechler, H; Scheruebel-Posch, S; Pelzmann, B; Rainer, PP; Foessl, I; Wallner, M; Scherr, D; Heinemann, A; Sedej, S; Ljubojevic-Holzer, S; von, Lewinski, D; Bisping, E.
miR-1183 Is a Key Marker of Remodeling upon Stretch and Tachycardia in Human Myocardium.
Int J Mol Sci. 2022; 23(13): Doi: 10.3390/ijms23136962 [OPEN ACCESS]
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Führende Autor*innen der Med Uni Graz
Dalinac Natasa
von Lewinski Dirk
Wallner Markus
Co-Autor*innen der Med Uni Graz
Bisping Egbert Hubertus
Fößl Ines
Heinemann Akos
Holzer Senka
Kolesnik Ewald
Mächler Heinrich
Pelzmann Brigitte
Rainer Peter
Scherr Daniel
Scherübel-Posch Susanne
Sedej Simon

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Many cardiac insults causing atrial remodeling are linked to either stretch or tachycardia, but a comparative characterization of their effects on early remodeling events in human myocardium is lacking. Here, we applied isometric stretch or sustained tachycardia at 2.5 Hz in human atrial trabeculae for 6 h followed by microarray gene expression profiling. Among largely independent expression patterns, we found a small common fraction with the microRNA miR-1183 as the highest up-regulated transcript (up to 4-fold). Both, acute stretch and tachycardia induced down-regulation of the predicted miR-1183 target genes ADAM20 and PLA2G7. Furthermore, miR-1183 was also significantly up-regulated in chronically remodeled atrial samples from patients with persistent atrial fibrillation (3-fold up-regulation versus sinus rhythm samples), and in ventricular myocardium from dilative cardiomyopathy hearts (2-fold up-regulation) as compared to non-failing controls. In sum, although stretch and tachycardia show distinct transcriptomic signatures in human atrial myocardium, both cardiac insults consistently regulate the expression of miR-1183 and its downstream targets in acute and chronic remodeling. Thus, elevated expression of miR-1183 might serve as a tissue biomarker for atrial remodeling and might be of potential functional significance in cardiac disease.

Find related publications in this database (Keywords)
cardiac remodeling
human myocardium
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