PMID- 30038553 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220318 IS - 1559-3258 (Print) IS - 1559-3258 (Electronic) IS - 1559-3258 (Linking) VI - 16 IP - 3 DP - 2018 Jul-Sep TI - Tauroursodeoxycholic Acid Alleviates H(2)O(2)-Induced Oxidative Stress and Apoptosis via Suppressing Endoplasmic Reticulum Stress in Neonatal Rat Cardiomyocytes. PG - 1559325818782631 LID - 10.1177/1559325818782631 [doi] LID - 1559325818782631 AB - INTRODUCTION: We aimed to test the mechanism of protective effects of tauroursodeoxycholic acid (TUDCA) on cardiovascular disease using cultured cardiomyocytes. METHODS: Neonatal rat cardiomyocytes (NRCMs) were isolated and cultured and then the cells were divided into 4 groups based on the treatments: control group (cells treated with culture medium), H(2)O(2)/thapsigargin (TG) group (cells treated with oxidative stress and endoplasmic reticulum [ER] stress inducer), TUDCA group, and H(2)O(2)/TG + TUDCA group. The treated NRCMs were then subjected to serial analyses including flow cytometry, enzyme-linked immunosorbent assay, and Western blotting. RESULTS: Tauroursodeoxycholic acid significantly attenuated H(2)O(2)-induced reactive oxygen species generation and lactate dehydrogenase release and restored H(2)O(2)-induced reductions of glutathione and superoxide dismutase levels in NRCMs. Tauroursodeoxycholic acid also alleviated H(2)O(2)-induced cardiomyocytes apoptosis, as well as the Bax/Bcl2 ratio compared with that of H(2)O(2) treated alone. In addition, TUDCA suppressed TG-induced ER stress as reflected by inversing cell viability and the expression levels of glucose-regulated protein 78 kDa and C/enhancer-binding protein homologous protein. CONCLUSION: Our data indicated that TUDCA-mediated inhibition on H(2)O(2)-induced oxidative stress and cardiomyocytes apoptosis was through suppressing ER stress, and TUDCA possesses the potential to be developed as therapeutic tool in clinical use for cardiovascular diseases. FAU - Zhang, Lin AU - Zhang L AUID- ORCID: 0000-0003-2153-1479 AD - Department of Cardiology, Daqing Oilfield General Hospital, Daqing, Heilongjiang, China. FAU - Wang, Yanmin AU - Wang Y AD - Department of Circulatory Medicine, Daqing Longnan Hospital, Daqing, Heilongjiang, China. LA - eng PT - Journal Article DEP - 20180718 PL - United States TA - Dose Response JT - Dose-response : a publication of International Hormesis Society JID - 101308899 PMC - PMC6052504 OTO - NOTNLM OT - ER stress OT - H2O2-induced oxidative stress OT - cell apoptosis OT - neonatal mouse cardiomyocytes OT - tauroursodeoxycholic acid COIS- Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2018/07/25 06:00 MHDA- 2018/07/25 06:01 PMCR- 2018/07/18 CRDT- 2018/07/25 06:00 PHST- 2017/10/24 00:00 [received] PHST- 2018/03/28 00:00 [revised] PHST- 2018/05/15 00:00 [accepted] PHST- 2018/07/25 06:00 [entrez] PHST- 2018/07/25 06:00 [pubmed] PHST- 2018/07/25 06:01 [medline] PHST- 2018/07/18 00:00 [pmc-release] AID - 10.1177_1559325818782631 [pii] AID - 10.1177/1559325818782631 [doi] PST - epublish SO - Dose Response. 2018 Jul 18;16(3):1559325818782631. doi: 10.1177/1559325818782631. eCollection 2018 Jul-Sep.