| Gastric epithelial cell proliferation and apoptosis in Helicobacter pylori-infected mice. | |
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MedLine Citation:
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PMID: 10807406 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Helicobacter pylori causes gastritis and is strongly associated with gastroduodenal ulcer and gastric cancer. The bacterium is associated with an increased rate of epithelial proliferation, which can be reversed by eradication of the organism. The mechanism of this response is not known, but this epithelial proliferation is one of the risk factors for developing gastric carcinoma. Recently, apoptosis also was found to be increased in the gastric mucosa of persons carrying H. pylori. METHODS: cagA-positive H. pylori isolated from a human gastric ulcer was inoculated into BALB/C mice. At 4, 6, 12, 18 and 24 weeks, mice were injected with bromodeoxyuridine 5 mg/kg and killed 1 h later. Proliferation was analysed by histochemical staining for BrdU; apoptosis was examined by the TUNEL assay. RESULTS: The number of BrdU-labelled cells in the antrum was significantly increased by H. pylori infection beginning 12 weeks after infection. The number of apoptotic cells in this tissue was increased significantly by 6 weeks after inoculation. CONCLUSION: The proliferation observed in H. pylori infection may be a response to increased apoptosis. |
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Authors:
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T Yamaguchi; N Nakajima; H Kuwayama; Y Ito; A Iwasaki; Y Arakawa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Alimentary pharmacology & therapeutics Volume: 14 Suppl 1 ISSN: 0269-2813 ISO Abbreviation: Aliment. Pharmacol. Ther. Publication Date: 2000 Apr |
Date Detail:
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Created Date: 2000-06-23 Completed Date: 2000-06-23 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8707234 Medline TA: Aliment Pharmacol Ther Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 68-73 Citation Subset: IM |
Affiliation:
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Department of Medicine, Nihon University School of Medicine, Tokyo, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Apoptosis* Bromodeoxyuridine / diagnostic use Cell Division Dogs Epithelial Cells / cytology Gastric Mucosa / cytology Gastritis / microbiology, pathology* Helicobacter Infections / complications, pathology* Helicobacter pylori* Humans Mice Mice, Inbred BALB C Radiation-Sensitizing Agents / diagnostic use Stomach Ulcer / microbiology, pathology |
| Chemical | |
Reg. No./Substance:
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0/Radiation-Sensitizing Agents; 59-14-3/Bromodeoxyuridine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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