Dietary prevention of Helicobacter pylori-associated gastric cancer with kimchi
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Migyeong Jeong1,*, Jong-Min Park1,*, Young-Min Han1, Kun Young Park2, Don Haeng Lee3, Joon-Hwan Yoo4, Joo Young Cho4, Ki-Baik Hahm1,4
1CHA Cancer Prevention Research Center, CHA Cancer Institute, CHA University, Seoul, Korea
2College of Nutrition, Busan National University, Busan, Korea
3Department of Gastroenterology, School of Medicine, Inha University, Incheon, Korea
4Digestive Disease Center, CHA University Bundang Medical Center, Seongnam, Korea
*These authors have contributed equally to this work
Ki-Baik Hahm, e-mail: firstname.lastname@example.org
Keywords: cancer preventive kimchi, Helicobacter pylori, anti-inflammation, rejuvenation, anti-mutagenesis
Received: June 01, 2015 Accepted: July 29, 2015 Published: August 10, 2015
To prove whether dietary intervention can prevent Helicobacter pylori-induced atrophic gastritis and gastric cancer, we developed cancer preventive kimchi (cpKimchi) through special recipe and administered to chronic H. pylori-initiated, high salt diet-promoted, gastric tumorigenesis mice model. H. pylori-infected C57BL/6 mice were administered with cpKimchi mixed in drinking water up to 36 weeks. Gross and pathological gastric lesions were evaluated after 24 and 36 weeks, respectively and explored underlying molecular changes to explain efficacies. Cancer preventive actions of anti-inflammation and anti-mutagenesis were compared between standard recipe kimchi (sKimchi) and special recipe cpKimchi in in vitro H. pylori-infected cell model. The erythematous and nodular changes, mucosal ulcerative and erosive lesions in the stomach were noted at 24th weeks, but cpKimchi administration significantly ameliorated. After 36th weeks, scattered nodular masses, some ulcers, and thin nodular gastric mucosa were noted in H. pylori-infected mice, whereas these gross lesions were significantly attenuated in cpKimchi group. On molecular analysis, significant expressions of COX-2 and IL-6, activated NF-κB and STAT3, increased apoptosis, and marked oxidative stresses were noted in H. pylori-infected group relevant to tumorigenesis, but these were all significantly attenuated in cpKimchi group. cpKimchi extracts imparted significant selective induction of apoptosis only in cancer cells, led to inhibition of H. pylori-induced proliferation, while no cytotoxicity through significant HO-1 induction in non-transformed gastric cells. In conclusion, daily dietary intake of cpKimchi can be an effective way either to rejuvenate H. pylori-atrophic gastritis or to prevent tumorigenesis supported with the concerted actions of anti-oxidative, anti-inflammatory, and anti-mutagenic mechanisms.
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