title: Local cellular immune response in Helicobacter pylori associated type B gastritis--selective increase of CD4+ but not gamma delta T-cells in the immune response to H. pylori antigens.
abstract: During recent years the infectious etiology of the majority of cases of chronic active type B gastritis and peptic ulcers has become increasingly evident. The chronicity of clinical symptoms and histopathological features such as numerous mucosal lymphocytic aggregates have implied a role of the specific cellular immune system. Whereas in Type A chronic active gastritis a pathogenetic role of lymphocytes and their target structures have been amply documented, in chronic active type B gastritis particularly that associated with Helicobacter pylori infection the nature of a specific immune response and its role in the pathogenesis of the epithelial and mucosal lesion has remained obscure. Here we report that CD4+ mucosal lymphocytes appear to selectively accumulate in Helicobacter pylori associated chronically active antral gastritis. Moreover, lamina propria gamma delta T lymphocytes were found to be more frequent in chronic active type B gastritis irrespective of the presence of absence of Helicobacter pylori.
authors.affiliation: II. Dept. of Medicine, Technical University Munich, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Seifarth
authors.forename: K
authors.initials: K
authors.lastname: Deusch
authors.forename: K
authors.initials: K
authors.lastname: Reich
authors.forename: M
authors.initials: M
authors.lastname: Classen
mesh_terms: D000328:Adult; D000368:Aged; D000942:Antigens, Bacterial / Q000276:immunology*; D001327:Autoimmune Diseases / Q000276:immunology / Q000473:pathology; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000473:pathology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology / Q000473:pathology; D003429:Cross Reactions / Q000276:immunology; D005260:Female; D005753:Gastric Mucosa / Q000276:immunology / Q000473:pathology; D005756:Gastritis / Q000145:classification / Q000276:immunology* / Q000473:pathology; D006360:Heat-Shock Proteins / Q000276:immunology; D016481:Helicobacter Infections / Q000276:immunology* / Q000473:pathology; D016480:Helicobacter pylori / Q000276:immunology*; D006801:Humans; D007124:Immunoenzyme Techniques; D018655:Lymphocyte Count; D008297:Male; D008875:Middle Aged; D011706:Pyloric Antrum / Q000276:immunology / Q000473:pathology; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000032:analysis*; D013601:T-Lymphocytes / Q000276:immunology* / Q000473:pathology
chemical_list: D000942:Antigens, Bacterial; D006360:Heat-Shock Proteins; D016692:Receptors, Antigen, T-Cell, gamma-delta