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Hao-Xia Tao, Chun-Jie Liu, Xiu-Li Liu, Shu-Qin Li, Ji Li, Zhao-Shan Zhang, Institute of Biotechnology, Academy of Military Medical Sciences, Beijing 100071, China
Supported by: National Foundation of the Advanced Technique Research and Development Project, No. 2001AA215161.
Correspondence to: Dr. Chun-Jie Liu, Institute of Biotechnology, Beijing 10071, China. liucj@nic.bmi.ac.cn
Received: August 28, 2003 Revised: September 25, 2003 Accepted: October 22, 2003 Published online: March 15, 2004
AIM: To develop a mouse model with long-term infection of H. pylori.
METHODS: Each mouse was inoculated with H. pylori Sydney strain 1 (SS1). Noninfected control mice and infected mice were killed at 4, 12 and 24 wk after H. pylori infection. A piece of gastric mucosa obtained from the posterior wall of the antrum of each mouse was used for culture of H. pylori, rapid urease testing and histopathological detection. Serum was obtained to measure the IgG antibody level to H. pylori.
RESULTS: After 4 wk of infection, the H. pylori was cultured from 6 of 7 infected Babl/c mice and 5 of 7 the H. pylori-infected C57BL/6 mice. After 12 and 24 wk of infection, all of 7 infected Babl/c and 6 of 7 the H. pylori-infected C57BL/6 mice showed the positive results. At the different wk, the rapid urease test results were consistent with the H. pylori culture test. At 12 wk after inoculation, chronic inflammation was observed in the pyloric mucosa by histopathological examination. At 24 wk after inoculation, lymphoid follicles were especially conspicuous in the submucosa, and they were also found in the deep portion of the mucosa.
CONCLUSION: H. pylori SS1 can colonize easily in the glandular stomach mucosa of mouse, and the histopathological changes are similar to those of humans with H. pylori infection.
Key Words: N/A
Citation: Tao HX, Liu CJ, Liu XL, Li SQ, Li J, Zhang ZS. Establishment of mouse models with long-term infection of H. pylori. Shijie Huaren Xiaohua Zazhi 2004; 12(3): 626-629
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