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- Title
Gastritis induced by Helicobacter pylori infection in experimental rats.
- Authors
Elseweidy, Mohamed M.; Taha, Mona M.; Younis, Nahla N.; Ibrahim, Khadiga S.; Hamouda, Hamdi A.; Eldosouky, Mohamed A.; Soliman, Hala
- Abstract
<bold>Background: </bold>Gastritis, an inflammation of gastric mucosa, may be due to many pathological factors and infection, such as with Helicobacter pylori. The use of experimental models of gastritis is important to evaluate the biochemical changes and study chemotherapeutic intervention. In a previous study we demonstrated an acute gastritis model induced by iodoacetamide.<bold>Aims: </bold>Our objective in this study was to evaluate a new gastritis model induced by H. pylori infection in experimental rats in terms of certain biomarkers in serum and mucosal tissues in addition to histopathological examination.<bold>Methods: </bold>Gastritis was induced in 20 albino Wistar rats by H. pylori isolated from antral biopsy taken from a 49-year-old male patient endoscopically diagnosed as having H. pylori infection. Another ten rats were used as controls. Serum gastrin, pepsinogen I activity, interleukin-6 (IL-6) and gastric mucosal myeloperoxidase (MPO) activity and prostaglandin E(2) (PGE(2)) were measured. Immunostaining for inducible nitric oxide synthase (iNOS), nitrotyrosine and DNA fragmentation were used to further evaluate H. pylori-induced gastritis.<bold>Results: </bold>Serum gastrin, IL-6, mucosal MPO activity, and PGE(2) demonstrated significant increases joined with a decreased serum pepsinogen I activity (P < 0.001). Immunohistochemistry demonstrated positive reaction for iNOS, nitrotyrosine and DNA fragmentation.<bold>Conclusions: </bold>Helicobacter pylori-induced gastritis models demonstrated massive oxidative stress and pronounced injury in mucosal tissue. Since our model in rats reflected the clinical picture of H. pylori infection, it can be considered as a consistent model to study chemotherapeutic intervention for this type of gastritis.
- Subjects
GASTRITIS; LABORATORY rats; HELICOBACTER diseases; PEPSINOGEN; INTERLEUKIN-6; GASTRIN; ENZYME metabolism; ANIMAL experimentation; ANIMALS; BIOLOGICAL models; BIOPSY; DNA; GASTRIC mucosa; HELICOBACTER pylori; INTERLEUKINS; OXIDOREDUCTASES; PYLORUS; RATS; DINOPROSTONE
- Publication
Digestive Diseases & Sciences, 2010, Vol 55, Issue 10, p2770
- ISSN
0163-2116
- Publication type
journal article
- DOI
10.1007/s10620-009-1103-y