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Gastric Lesions and Immune Responses caused by Long-term Infection with Helicobacter heilmannii in C57BL/6 Mice

Cited 9 time in Web of Science Cited 11 time in Scopus
Authors
Park, Jong-Hwan; Seok, S.H.; Baek, M.W.; Lee, H.Y.; Kim, D.J.; Park, Jae Hak
Issue Date
2008-09-26
Publisher
Elsevier
Citation
Journal of Comparative Pathology, 139, 208-217
Keywords
bacterial infectiongastritisH. heilmanniilymphoid folliclemousezoonosis
Abstract
Helicobacter heilmannii is a gastric micro-organism that can induce gastritis and B-cell MALT (mucosa-associated lymphoid tissue) lymphoma in mice, in a host-dependent manner. The present study was designed to examine gastric lesions and immune responses caused by intragastric H. heilmannii infection of an inbred mouse strain, C57BL/6. Long-term infection led to the formation of gastric nodules and increased mucosal thickness of the stomach, due to gastric epithelial proliferation. Infection also induced the formation of lymphoid follicles in the corpus mucosa and submucosa. The follicular cells were mainly CD45R+ cells that did not produce immunoglobulin. However, scattered in the lamina propria and corpus submucosa, numerous IgA+ cells were found in infected mice, but not in control mice. RT-PCR results showed that H. heilmannii infection led to increased mRNA expression for IFN-γ (a Th1 cytokine) and IL-10 (a Th2 cytokine) in the mouse stomach, suggesting that both Th1 and Th2 responses are associated with H. heilmannii infection. The mRNA of other cytokines and chemokines (IL-1β, IL-12p40, TNF-α, MCP-1, KC and MIP-2) was also increased by infection.
ISSN
0021-9975
Language
English
URI
http://hdl.handle.net/10371/8277
DOI
https://doi.org/10.1016/j.jcpa.2008.04.005
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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