Carcinogenesis, Teratogenesis & Mutagenesis ›› 2021, Vol. 33 ›› Issue (5): 365-369.doi: 10.3969/j.issn.1004-616x.2021.05.009

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Protective effect of oleanolic acid co-treatment on alcohol-induced oxidative damage in gastric mucosa of rats

LI Hongwei1,2, KONG Deqin1, YU Weihua1, WU Hao1, WANG Zhao1, LIU Rui1, HAI Chunxu1, WANG Xin1, LIU Jiangzheng1, LI Wenli1   

  1. 1. Department of Toxicology, Shaanxi Provincial Key Lab of Free Radical Biology and Medicine, Key Lab of Hazard Assessment and Control in Special Operational Environment of Ministry of Education, Air Force Medical University, Xi'an 710032, Shaanxi;
    2. 63710 Military Hospital, Xinzhou 036301, Shanxi, China
  • Received:2021-07-22 Revised:2021-08-25 Online:2021-09-30 Published:2021-10-09

Abstract: OBJECTIVE: To study the protective effect of oleanolic acid (OA) on alcohol-induced gastric mucosal injury in rats. METHODS: Using the random number table method, 24 SD rats were randomly divided into 3 groups of 8 rats per group:control (isocaloric glucose solution),alcohol exposure (gavage 4 g/kg alcohol to construct alcoholic gastric wall injury model),OA intervention (perfusion to the stomach with an alcohol solution of 10 mg/kg OA). All treatments lasted 30 days. Rats were evaluated for general changes of the stomach wall and pathological changes of HE; content of malondialdehyde (MDA) and oxidized glutathione (GSSG) in the stomach wall; content of reduced glutathione (GSH) and ratio of GSH/GSSG,antioxidant enzyme transcription Factor Nrf-2 mRNA and protein expression; and TNF-α, IL-6 mRNA and protein expression levels. RESULTS: Compared with the control group,4 g/kg alcohol exposure for 30 days successfully induced oxidative damage and inflammatory reactions of the gastric wall in rats. Compared with the alcohol-exposed rats, pathological damage to the stomach wall in the OA intervention group was reduced, contents of MDA and GSSG in the stomach wall tissue were decreased (P < 0.05),GSH contents and the GSH/GSSG ratios were increased (P < 0.05),and Nrf-2 was increased. mRNA and protein expression levels were increased significantly (P< 0.05),while mRNA and protein expressions of TNF-α and IL-6 were decreased (P < 0.05). CONCLUSION: OA played a protective role on alcohol-induced gastric wall injury in rats through its antioxidant and antiinflammatory effects.

Key words: oleanolic acid, alcohol, oxidative stress, inflammation

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