N-acetylcysteine prevents the development of gastritis induced by Helicobacter pylori infection

Sungil Jang; Eun-Jung Bak; Jeong-Heon Cha

doi:10.1007/s12275-017-7089-9

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N-acetylcysteine prevents the development of gastritis induced by Helicobacter pylori infection: Sungil Jang ¹, Eun-Jung Bak ¹, Jeong-Heon Cha ^1,2; Journal of Microbiology 2017;55(5):396-402.
DOI: https://doi.org/10.1007/s12275-017-7089-9
Published online: April 29, 2017

¹Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea, ²Microbiology and Molecular Biology, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Shanghai 510182, P. R. China¹Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea, ²Microbiology and Molecular Biology, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Shanghai 510182, P. R. China

Corresponding author: Eun-Jung Bak , Tel: +82-2-2227-3061,
Jeong-Heon Cha , Tel: +82-2-2227-3061,

Received: 27 February 2017 • Revised: 11 March 2017 • Accepted: 14 March 2017

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Abstract

Helicobacter pylori (H. pylori) is a human gastric pathogen, causing various gastric diseases ranging from gastritis to gas-tric adenocarcinoma. It has been reported that combining N-acetylcysteine (NAC) with conventional antibiotic therapy increases the success rate of H. pylori eradication. We evalu-ated the effect of NAC itself on the growth and coloniza-tion of H. pylori, and development of gastritis, using in vitro liquid culture system and in vivo animal models. H. pylori growth was evaluated in broth culture containing NAC. The H. pylori load and histopathological scores of stomachs were measured in Mongolian gerbils infected with H. pylori strain 7.13, and fed with NAC-containing diet. In liquid culture, NAC inhibited H. pylori growth in a concentration-depen-dent manner. In the animal model, 3-day administration of NAC after 1 week from infection reduced the H. pylori load; 6-week administration of NAC after 1 week from infection prevented the development of gastritis and reduced H. pylori colonization. However, no reduction in the bacterial load or degree of gastritis was observed with a 6-week administ-ration of NAC following 6-week infection period. Our results indicate that NAC may exert a beneficial effect on reduction of bacterial colonization, and prevents the development of severe inflammation, in people with initial asymptomatic or mild H. pylori infection.

Keywords: gastritis;Helicobacter pylori;mongolian gerbil;N-acetylcysteine

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N-acetylcysteine prevents the development of gastritis induced by Helicobacter pylori infection

J. Microbiol. 2017;55(5):396-402. Published online April 29, 2017

DOI: https://doi.org/10.1007/s12275-017-7089-9

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