PMID- 32440237 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220414 IS - 1179-1578 (Print) IS - 1179-1578 (Electronic) IS - 1179-1578 (Linking) VI - 13 DP - 2020 TI - Chronic Restraint Stress Induces Gastric Mucosal Inflammation with Enhanced Oxidative Stress in a Murine Model. PG - 383-393 LID - 10.2147/PRBM.S250945 [doi] AB - BACKGROUND: Although the underlying mechanisms of chronic stress are still unknown, this condition has been related to the pathophysiology of gastric mucosal inflammation, whose development is accelerated by oxidative stress. The present study investigates how chronic stress influences gastric mucosal oxidative stress and inflammation. METHODS: Eight-week-old C57BL/6J male mice were subjected to two-week intermittent restraint stress. The expressions of CD11b (a specific for monocyte/macrophage), monocyte/macrophage cell surface markers (CD68 and F4/80), NADPH oxidase-4 (Nox-4) and 8-hydroxy-2'-deoxyguanosine (8-OHdG, a sensitive biomarker of oxidative stress) were determined using immunohistochemistry, RT-PCR, and enzyme-linked immunosorbent assay, respectively. The expressions of antioxidant enzymes, such as superoxide dismutase, catalase, and glutathione peroxidase, were examined by RT-PCR and Western blotting. The expressions of proinflammatory cytokines, including monocyte chemoattractant protein-1 (MCP-1), interleukin-1beta (IL-1beta), and tumor necrosis factor-alpha (TNF-alpha), were determined using immunohistochemistry and RT-PCR, respectively. RESULTS: Chronic stress increased the lymphocytic infiltration and inflammation within the gastric mucosa of mice. Stress remarkably increased the expression levels of CD11b and mRNA expression levels of CD68 and F4/80 in the mucosa of the stomach of stressed mice. Stress remarkably increased both mRNA and plasma concentrations of Nox-4 and 8-OHdG; and markedly reduced gastric mRNA and protein expression levels of antioxidant enzymes such as superoxide dismutase, catalase, and glutathione peroxidase. The expressions of proinflammatory cytokines (MCP-1, IL-1beta, and TNF-alpha) were predominantly observed in the gastric mucosal layers of the stressed mice. Furthermore, stress remarkably elevated the gastric mucosal mRNA expression levels of MCP-1, IL-1beta, and TNF-alpha. CONCLUSION: Two weeks of restraint stress induced gastric inflammation in the murine model with enhanced oxidative stress and reduced anti-oxidative system. CI - (c) 2020 Yisireyili et al. FAU - Yisireyili, Maimaiti AU - Yisireyili M AD - Research Institute of General and Minimally Invasive Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. AD - Department of Minimally Invasive Surgery, Hernia, and Abdominal Wall Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. FAU - Alimujiang, Aziguli AU - Alimujiang A AD - Research Institute of General and Minimally Invasive Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. FAU - Aili, Aikebaier AU - Aili A AD - Research Institute of General and Minimally Invasive Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. AD - Department of Minimally Invasive Surgery, Hernia, and Abdominal Wall Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. FAU - Li, Yiliang AU - Li Y AD - Department of Minimally Invasive Surgery, Hernia, and Abdominal Wall Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. FAU - Yisireyili, Salamaiti AU - Yisireyili S AD - Research Institute of General and Minimally Invasive Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. FAU - Abudureyimu, Kelimu AU - Abudureyimu K AUID- ORCID: 0000-0003-3418-7304 AD - Research Institute of General and Minimally Invasive Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. AD - Department of Minimally Invasive Surgery, Hernia, and Abdominal Wall Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, People's Republic of China. LA - eng PT - Journal Article DEP - 20200504 PL - New Zealand TA - Psychol Res Behav Manag JT - Psychology research and behavior management JID - 101514563 PMC - PMC7210023 OTO - NOTNLM OT - anti-oxidative proteins OT - gastric mucosal inflammation OT - oxidative stress OT - stress COIS- The authors report no conflicts of interest in this work. EDAT- 2020/05/23 06:00 MHDA- 2020/05/23 06:01 PMCR- 2020/05/04 CRDT- 2020/05/23 06:00 PHST- 2020/02/23 00:00 [received] PHST- 2020/04/16 00:00 [accepted] PHST- 2020/05/23 06:00 [entrez] PHST- 2020/05/23 06:00 [pubmed] PHST- 2020/05/23 06:01 [medline] PHST- 2020/05/04 00:00 [pmc-release] AID - 250945 [pii] AID - 10.2147/PRBM.S250945 [doi] PST - epublish SO - Psychol Res Behav Manag. 2020 May 4;13:383-393. doi: 10.2147/PRBM.S250945. eCollection 2020.