PMID- 35945990 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220811 IS - 1178-7031 (Print) IS - 1178-7031 (Electronic) IS - 1178-7031 (Linking) VI - 15 DP - 2022 TI - Antioxidant Mitoquinone Alleviates Chronic Pancreatitis via Anti-Fibrotic and Antioxidant Effects. PG - 4409-4420 LID - 10.2147/JIR.S357394 [doi] AB - BACKGROUND: Chronic pancreatitis (CP) is a long-term inflammatory disease of the pancreas that can be caused by various pathogenic factors. Oxidative stress (OS), which is associated with several pancreatic diseases, can induce pancreatic stellate cell (PSC) activation, leading to pancreatic fibrosis. Given the inefficacy of existing treatments for CP, in this study, our objective was to evaluate the therapeutic effect of the antioxidant, mitoquinone (MitoQ). METHODS: First, in vivo, we established a CP mouse model via the repeated injection of cerulein. Mice in the MitoQ group simultaneously received MitoQ daily. After 4 weeks of cerulein injection, pancreatic tissues from mice were evaluated by morphological changes and the expression of fibrosis markers. Further, OS in the collected pancreatic tissue samples was evaluated by determining the level of malondialdehyde (MDA) as well as the expression levels and activities of antioxidants. Furthermore, in vitro, the effect of MitoQ on human PSCs (hPSCs) was evaluated based on PSC activation markers and fibrotic phenotypes, and OS in these treated hPSCs was evaluated by measuring reactive oxygen species (ROS), MDA, and antioxidant levels. RESULTS: In vivo, MitoQ alleviated pancreatic fibrosis and inhibited OS in the cerulein-induced murine CP model. In vitro, it inhibited PSC activation as well as the subsequent development of the profibrogenic phenotypes by balancing out the levels of free radicals and the intracellular antioxidant system. CONCLUSION: MitoQ is a potential candidate for CP treatment. CI - (c) 2022 Li et al. FAU - Li, Miaomiao AU - Li M AD - Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China. FAU - Yuan, Yue AU - Yuan Y AD - Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China. FAU - Han, Xue AU - Han X AD - Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, People's Republic of China. FAU - Liu, Xinjuan AU - Liu X AD - Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China. FAU - Zhang, Weizhen AU - Zhang W AD - Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, People's Republic of China. FAU - Hao, Jianyu AU - Hao J AD - Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China. LA - eng PT - Journal Article DEP - 20220803 PL - New Zealand TA - J Inflamm Res JT - Journal of inflammation research JID - 101512684 PMC - PMC9357395 OTO - NOTNLM OT - MitoQ OT - chronic pancreatitis OT - mitochondria-specific antioxidant OT - oxidative stress OT - pancreatic fibrosis OT - pancreatic stellate cells OT - superoxide dismutase COIS- The authors declare no conflicts of interest in this work. EDAT- 2022/08/11 06:00 MHDA- 2022/08/11 06:01 PMCR- 2022/08/03 CRDT- 2022/08/10 01:48 PHST- 2022/01/07 00:00 [received] PHST- 2022/07/04 00:00 [accepted] PHST- 2022/08/10 01:48 [entrez] PHST- 2022/08/11 06:00 [pubmed] PHST- 2022/08/11 06:01 [medline] PHST- 2022/08/03 00:00 [pmc-release] AID - 357394 [pii] AID - 10.2147/JIR.S357394 [doi] PST - epublish SO - J Inflamm Res. 2022 Aug 3;15:4409-4420. doi: 10.2147/JIR.S357394. eCollection 2022.