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Korean J Gastroenterol. 2018 Mar;71(3):132-142. English. Original Article. https://doi.org/10.4166/kjg.2018.71.3.132
Kim YS , Jeong M , Han YM , Park JM , Kwon SO , Hong SP , Hahm KB .
Department of Biochemistry and Molecular Biology, Hanyang University College of Medicine, Seoul, Korea.
CHA Cancer Preventive Research Center, CHA Bio Complex, College of Medicine, CHA University, Pangyo, Korea. hahmkb@cha.ac.kr
S&D Research Center, S&D Foods, Cheongwon, Korea.
Digestive Disease Center, CHA University Bundang Medical Center, College of Medicine, CHA University, Seongnam, Korea.
Abstract

Background/Aims

Several lines of evidence from epidemiologic and laboratory studies have shown that the consumption of Artemisia or green tea extracts (MPGT) is inversely associated with the risk of alcohol-induced damage and other chronic diseases. Supported by previous studies showing that the combined extract of Artemisia and green tea, MPGT, exerted significantly either antioxidative or anti-inflammatory actions against Helicobacter pylori-associated gastric diseases, it was hypothesized that MPGT can offer protection against alcoholic gastritis.

Methods

Ethanol was administered to induce gastric damage in Wistar rats, which had been pretreated with various doses of MPGT, to measure the rescuing action of a MPGT pretreatment against ethanol-induced gastric damage. In addition, the molecular mechanisms for the preventive effects were examined.

Results

The MPGT pretreatment (100, 300, and 500 mg/kg) alleviated the ethanol-induced gastric damage, which was evidenced by the significant decrease in calcium-dependent phospholipase A2, MAPKs, and NF-κB levels compared to ethanol alone. Furthermore, the MPGT pretreatment preserved 15-prostaglandin dehydrogenase, whereas cyclooxygenase-2 was decreased significantly. All of these biochemical changes led to the significant alleviation of alcohol-associated gastric mucosal damage. Ethanol significantly increased the TUNEL positivity in the stomach, but MPGT decreased the apoptotic index significantly, which was associated with significantly lower pathological scores of ethanol-induced mucosal ulcerations. The significant protective changes observed alcoholic gastritis with MPGT were related to the increased expression of cytoprotective genes, such as heat-shock protein (HSP)27, HSP60, and PDGF.

Conclusions

The efficient anti-inflammatory, anti-apoptotic, and regenerative actions of MPGT make it a potential nutrient phytoceutical to rescue the stomach from alcoholic gastritis.

Copyright © 2019. Korean Association of Medical Journal Editors.