PMID- 31957851 OWN - NLM STAT- MEDLINE DCOM- 20210101 LR - 20210101 IS - 2284-0729 (Electronic) IS - 1128-3602 (Linking) VI - 24 IP - 1 DP - 2020 Jan TI - CircRNA 010567 improves myocardial infarction rats through inhibiting TGF-beta1. PG - 369-375 LID - 19935 [pii] LID - 10.26355/eurrev_202001_19935 [doi] AB - OBJECTIVE: To observe the intervention effect of circular ribonucleic acid (circRNA) 010567 on myocardial infarction (MI)-induced myocardial fibrosis (MF) in rats, and to explore whether its mechanism of action is related to the regulation on the transforming growth factor-beta1 (TGF-beta1) signaling pathway. MATERIALS AND METHODS: The rat model of acute MI was established using ligation of the left anterior descending coronary artery. Model rats were randomly divided into circRNA 010567 siRNA group and Model group, with sham operation group as Control group. The effects of circRNA 010567 on the cardiac function, MF, myocardial apoptosis, mRNA, and protein expression levels of TGF-beta1 and Smad3 in heart tissues of MI rats were detected using the small animal ultrasound system, Masson staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining, reverse transcription-polymerase chain reaction (RT-PCR), and Western blotting, respectively. RESULTS: Compared with Control group, Model group had significantly decreased cardiac function, significantly lower left ventricular ejection fraction (LVEF), and left ventricular fractional shortening (LVFS), markedly increased left ventricular end-diastolic diameter (LVDd), and left ventricular end-systolic diameter (LVDs), severe MF, as well as a significantly higher apoptosis rate of myocardial cells, and evidently increased mRNA and protein levels of TGF-beta1 and Smad3 in heart tissues. Compared with Model group, circRNA 010567 siRNA group had evidently improved cardiac function, significantly higher LVEF and LVFS, markedly decreased LVDd and LVDs, alleviated MF, a significantly lower apoptosis rate of myocardial cells, and evidently decreased mRNA and protein levels of TGF-beta1 and Smad3 in heart tissues. CONCLUSIONS: CircRNA 010567 siRNA can improve the cardiac function, alleviate the MF, and inhibit the myocardial apoptosis, thereby further suppressing MI-induced MF, whose mechanism may be related to the inhibition on the TGF-beta1 signaling pathway. FAU - Bai, M AU - Bai M AD - Heart Center, the First Affiliated Hospital of Lanzhou University, Lanzhou, China. baiming@vip.163.com. FAU - Pan, C-L AU - Pan CL FAU - Jiang, G-X AU - Jiang GX FAU - Zhang, Y-M AU - Zhang YM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Italy TA - Eur Rev Med Pharmacol Sci JT - European review for medical and pharmacological sciences JID - 9717360 RN - 0 (RNA, Circular) RN - 0 (RNA, Messenger) RN - 0 (Transforming Growth Factor beta1) SB - IM MH - Acute Disease MH - Animals MH - Apoptosis MH - Disease Models, Animal MH - Male MH - Myocardial Infarction/*metabolism/pathology MH - RNA, Circular/*metabolism MH - RNA, Messenger/genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Signal Transduction MH - Transforming Growth Factor beta1/genetics/*metabolism EDAT- 2020/01/21 06:00 MHDA- 2021/01/02 06:00 CRDT- 2020/01/21 06:00 PHST- 2020/01/21 06:00 [entrez] PHST- 2020/01/21 06:00 [pubmed] PHST- 2021/01/02 06:00 [medline] AID - 19935 [pii] AID - 10.26355/eurrev_202001_19935 [doi] PST - ppublish SO - Eur Rev Med Pharmacol Sci. 2020 Jan;24(1):369-375. doi: 10.26355/eurrev_202001_19935.