PMID- 30720190 OWN - NLM STAT- MEDLINE DCOM- 20200720 LR - 20200915 IS - 2284-0729 (Electronic) IS - 1128-3602 (Linking) VI - 23 IP - 2 DP - 2019 Jan TI - Influence of MiR-154 on myocardial apoptosis in rats with acute myocardial infarction through Wnt/beta-catenin signaling pathway. PG - 818-825 LID - 16896 [pii] LID - 10.26355/eurrev_201901_16896 [doi] AB - OBJECTIVE: To explore the influence of micro ribonucleic acid (miR)-154 on myocardial apoptosis in rats with acute myocardial infarction (AMI), and to analyze whether Wnt/beta-catenin signaling pathway was involved in the regulation. MATERIALS AND METHODS: The Sprague-Dawley (SD) rat model of AMI was established via ligation of left anterior descending artery. Rats were randomly divided into model group (M group, n=12) and ICG-001 intervention group (I group, n=12). At the same time, sham operation group (S group, n=12) was established. In I group, ICG-001 (5 mg/kg) was intraperitoneally injected every day after operation. Meanwhile, an equal amount of normal saline was injected in rats of S group and M group. 21 d after operation, the cardiac function of rats in each group was detected via echocardiography. After that, the rats were immediately executed. MI area in each group was detected via 2,3,5-triphenyltetrazolium chloride (TTC) staining. Myocardial apoptosis level in each group was detected via terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining. Moreover, the changes of apoptotic proteins in rat myocardial cells were detected via Western blotting. Moreover, the expression level of miR-154 in myocardial cells of rats was detected via quantitative polymerase chain reaction (qPCR). Furthermore, the influence of miR-154 on Wnt/beta-catenin signaling pathway was detected via Western blotting. RESULTS: Compared with S group, left ventricular ejection fraction (LVEF, %) and left ventricular fractional shortening (LVFS, %) were significantly decreased in M group (p<0.01). However, left ventricular internal diameter at end-diastole (LVIDd) and left ventricular internal diameter at end-systole (LVIDs) were significantly increased (p<0.01). In I group, LVEF (%) and LVFS (%) were significantly higher than those of M group (p<0.05), whereas LVIDs and LVIDd were significantly lower (p<0.05). MI area in M group was remarkably larger than that of S group (p<0.01). Meanwhile, MI area in I group was significantly smaller than that of M group (p<0.01). Compared with S group, the number of apoptotic myocardial cells and the protein expression level of cleaved caspase-3 were significantly increased in M group (p<0.01). However, the expression level of B-cell lymphoma-2/Bcl-2 associated X protein (Bcl-2/Bax) was significantly decreased (p<0.01). The number of apoptotic myocardial cells and the protein expression level of cleaved caspase-3 were significantly declined in I group when compared with those of M group (p<0.01). However, the expression level of Bcl-2/Bax was significantly increased in I group (p<0.01). The expression level of miR-154 in myocardial cells of M group and I group was remarkably increased when compared with that of S group (p<0.01). Furthermore, the expression levels of beta-catenin and Cyclin D1 in myocardial cells of M group were remarkably higher than those of S group and I group (p<0.01). CONCLUSIONS: AMI significantly increases the expression level of miR-154. Moreover, miR-154 can activate Wnt/beta-catenin signaling pathway, eventually promoting myocardial apoptosis. FAU - Sun, H-Y AU - Sun HY AD - Department of Cardiology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China. guoanzhao@xxmu.edu.cn. FAU - Wang, X-L AU - Wang XL FAU - Ma, L-C AU - Ma LC FAU - Yang, M AU - Yang M FAU - Yang, H-J AU - Yang HJ FAU - Huang, H-W AU - Huang HW FAU - Zhao, G-A AU - Zhao GA LA - eng PT - Journal Article PL - Italy TA - Eur Rev Med Pharmacol Sci JT - European review for medical and pharmacological sciences JID - 9717360 RN - 0 (Bridged Bicyclo Compounds, Heterocyclic) RN - 0 (Ctnnb1 protein, rat) RN - 0 (ICG 001) RN - 0 (MIRN154 microRNA, rat) RN - 0 (MicroRNAs) RN - 0 (Pyrimidinones) RN - 0 (Wnt Proteins) RN - 0 (beta Catenin) SB - IM MH - Animals MH - Apoptosis/genetics MH - Bridged Bicyclo Compounds, Heterocyclic/administration & dosage MH - Disease Models, Animal MH - MicroRNAs/*metabolism MH - Myocardial Infarction/diagnosis/drug therapy/*genetics/pathology MH - Myocardium/cytology/*pathology MH - Myocytes, Cardiac/*pathology MH - Pyrimidinones/administration & dosage MH - Rats MH - Rats, Sprague-Dawley MH - Stroke Volume/drug effects/genetics MH - Ventricular Function, Left/drug effects/genetics MH - Wnt Proteins/antagonists & inhibitors/metabolism MH - Wnt Signaling Pathway/drug effects/*genetics MH - beta Catenin/metabolism EDAT- 2019/02/06 06:00 MHDA- 2020/07/21 06:00 CRDT- 2019/02/06 06:00 PHST- 2019/02/06 06:00 [entrez] PHST- 2019/02/06 06:00 [pubmed] PHST- 2020/07/21 06:00 [medline] AID - 16896 [pii] AID - 10.26355/eurrev_201901_16896 [doi] PST - ppublish SO - Eur Rev Med Pharmacol Sci. 2019 Jan;23(2):818-825. doi: 10.26355/eurrev_201901_16896.