@article{raupach_torregroza_niestegge_feige_klemm-meyer_bauer_brandenburger_grievink_heinen_huhn_2020, 
  title={MiR-21-5p but not miR-1-3p expression is modulated by preconditioning in a rat model of myocardial infarction}, 
  DOI={10.1007/s11033-020-05721-y}, 
  abstractNote={Isoflurane (Iso) preconditioning (PC) is known to be cardioprotective against ischemia/reperfusion (I/R) injury. It was previously shown that microRNA-21-5p (miR-21-5p) is regulated by Iso-PC. It is unclear, if expression of cardiac enriched miR-1-3p is also affected by Iso-PC, and associated with activation of HIF1α (hypoxia-inducible factor 1-alpha).  Male Wistar rats (n = 6-8) were randomly assigned to treatment with or without 1 MAC Iso for 30 min, followed by 25 min of regional myocardial ischemia, with 120 min reperfusion. At the end of reperfusion, myocardial expression of miR-1-3p, miR-21-5p and mRNAs of two HIF-1α-dependent genes, VEGF (vascular endothelial growth factor) and HO-1 (heme oxygenase-1), were determined by quantitative PCR. Protein expression of a miR-21 target gene, PDCD4 (programmed cell death protein 4), was assessed by western blot analysis. Infarct sizes were analyzed with triphenyltetrazoliumchloride staining. MiR-21-5p expression was increased by Iso, whereas expression of miR-1-3p was not altered. The expression of VEGF but not HO-1 was induced by Iso. Iso-PC reduced infarct sizes compared to untreated controls. No regulation of miRNA and mRNA expression was detected after I/R. PDCD4 protein expression was not affected after Iso exposure. Expression of miR-21-5p, in contrast to miR-1-3p, is altered during this early time point of Iso-PC. HIF1α signaling seems to be involved in miR-21-5p regulation.}, 
  publisher={Springer Science and Business Media LLC}, 
  author={Raupach, Annika and Torregroza, Carolin and Niestegge, Julia and Feige, Katharina and Klemm-Meyer, Swantje and Bauer, Inge and Brandenburger, Timo and Grievink, Hilbert and Heinen, André and Huhn, Ragnar}, 
  year={2020}, 
  month={Aug}
  }