PMID- 21722181 OWN - NLM STAT- MEDLINE DCOM- 20120511 LR - 20211203 IS - 1440-1746 (Electronic) IS - 0815-9319 (Linking) VI - 27 IP - 1 DP - 2012 Jan TI - Mitigating endoplasmic reticulum stress with revaprazan ameliorates stress-related mucosal disease. PG - 120-9 LID - 10.1111/j.1440-1746.2011.06838.x [doi] AB - BACKGROUND AND AIM: The term "stress-related mucosal disease" (SRMD) represents conditions ranging from superficial mucosal damage to focal deep mucosal damage in the stomach, of which pathogenesis is deduced to be violent mucosal ischemia or excess oxidative stress, but not fully clarified yet. Under the hypothesis that mucosal cell apoptosis subsequent to endoplasmic reticulum (ER) stress might play a crucial role, we evaluated the efficacy and mechanism that novel acid pump antagonist (APA), revaprazan, alleviated water immersion restraint stress (WIRS) induced SRMD in rats. METHODS: In order to define whether WIRS-induced SRMD is associated with ER stress, we checked the alteration in the expression of ER stress markers including GRP78, CHOP, XBP-1, BiP as well as apoptosis in WIRS-induced SRMD. The efficacy of revaprazan on either alleviating ER stress or attenuating SRMD was compared with proton pump inhibitor (PPI) and gastroprotectant. RESULTS: Ten hours of WIRS induced a severe degree of SRMD, in which ER stress markers including CHOP, XBP1, and BiP were significantly overexpressed in the gastric tissues. However, these markers of ER stress were significantly decreased in the group pretreated with revaprazan compared to PPI or gastroprotectant, accompanied with a significant reduction in apoptotic index. In addition to ER stress, revaprazan imposed anti-inflammatory benefit to limit SRMD based on significant levels of inflammatory cell apoptosis. CONCLUSION: Endoplasmic reticulum stress accompanied with drastic apoptosis was implicated in the development of SRMD, but revaprazan could rescue the stomach from SRMD through alleviating ER stress in epithelial cells much better than either PPI or gastroprotectant. CI - (c) 2011 Journal of Gastroenterology and Hepatology Foundation and Blackwell Publishing Asia Pty Ltd. FAU - Kim, Jung Ho AU - Kim JH AD - Department of Gastroenterology Gil Medical Center, Gachon Graduate School of Medicine, Incheon, Korea. FAU - Kim, Eun Hee AU - Kim EH FAU - Ock, Chanyoung AU - Ock C FAU - Hong, Hua AU - Hong H FAU - Kim, Yoon Jae AU - Kim YJ FAU - Kwon, Kwang An AU - Kwon KA FAU - Park, Dong Kyun AU - Park DK FAU - Hahm, Ki Baik AU - Hahm KB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Australia TA - J Gastroenterol Hepatol JT - Journal of gastroenterology and hepatology JID - 8607909 RN - 0 (Anti-Inflammatory Agents) RN - 0 (DNA-Binding Proteins) RN - 0 (Ddit3 protein, rat) RN - 0 (Endoplasmic Reticulum Chaperone BiP) RN - 0 (GRP78 protein, rat) RN - 0 (Heat-Shock Proteins) RN - 0 (Hspa5 protein, mouse) RN - 0 (Inflammation Mediators) RN - 0 (Proton Pump Inhibitors) RN - 0 (Pyrimidinones) RN - 0 (Regulatory Factor X Transcription Factors) RN - 0 (Tetrahydroisoquinolines) RN - 0 (Transcription Factors) RN - 0 (X-Box Binding Protein 1) RN - 0 (Xbp1 protein, mouse) RN - 0 (Xbp1 protein, rat) RN - 147336-12-7 (Transcription Factor CHOP) RN - 4DQ6T10R64 (YH 1885) SB - IM MH - Animals MH - Anti-Inflammatory Agents/pharmacology MH - Apoptosis/drug effects MH - Cell Line MH - Cytoprotection MH - DNA-Binding Proteins/metabolism MH - Disease Models, Animal MH - Endoplasmic Reticulum/*drug effects/metabolism MH - Endoplasmic Reticulum Chaperone BiP MH - Gastric Mucosa/*drug effects/immunology/metabolism/pathology MH - Heat-Shock Proteins/metabolism MH - Immersion MH - Inflammation Mediators/metabolism MH - Metabolic Detoxication, Phase II MH - Mice MH - Proton Pump Inhibitors/*pharmacology MH - Pyrimidinones/*pharmacology MH - Rats MH - Rats, Wistar MH - Regulatory Factor X Transcription Factors MH - Severity of Illness Index MH - Stomach Diseases/*drug therapy/etiology/immunology/metabolism/pathology MH - Stress, Physiological/*drug effects MH - Stress, Psychological/*complications MH - Tetrahydroisoquinolines/*pharmacology MH - Time Factors MH - Transcription Factor CHOP/metabolism MH - Transcription Factors/metabolism MH - X-Box Binding Protein 1 EDAT- 2011/07/05 06:00 MHDA- 2012/05/12 06:00 CRDT- 2011/07/05 06:00 PHST- 2011/07/05 06:00 [entrez] PHST- 2011/07/05 06:00 [pubmed] PHST- 2012/05/12 06:00 [medline] AID - 10.1111/j.1440-1746.2011.06838.x [doi] PST - ppublish SO - J Gastroenterol Hepatol. 2012 Jan;27(1):120-9. doi: 10.1111/j.1440-1746.2011.06838.x.