title: Cytotoxic lymphocytes (CD8+) in the antrum mucosa in children with chronic Helicobacter pylori-related inflammation before and after bacteria eradication.
abstract: The authors assessed the expression of cytotoxic CD8 lymphocytes in the antrum mucosa of children with chronic Helicobacter pylori-related inflammation, before and after bacteria eradication. Biopsy specimens of gastric mucosa were evaluated in specimens, collected from 59 H. pylori-positive patients (Group I), 29 patients after H. pylori infection (Group II) and 18 H. pylori-negative children (Group III). The obtained specimens were assessed for infection and inflammation and the expression of CD8+ lymphocytes was estimated, using monoclonal antibodies. The number of CD8+ lymphocytes in the mucosa was counted. The results of the study showed an increase in the expression of CD8+ lymphocytes in children with H. pylori infection, in comparison to the values in children after bacteria eradication. The increased expression of CD8+ lymphocytes correlated with the severity degree of antrum gastritis.
authors.affiliation: Department of Paediatric Nursing, Medical University of Białystok, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Maciorkowska
authors.forename: I
authors.initials: I
authors.lastname: Kasacka
authors.forename: K
authors.initials: K
authors.lastname: Kondej-Muszyńska
authors.forename: M
authors.initials: M
authors.lastname: Kaczmarski
authors.forename: A
authors.initials: A
authors.lastname: Kemona
mesh_terms: D001706:Biopsy; D002648:Child; D002908:Chronic Disease; D005753:Gastric Mucosa / Q000276:immunology / Q000473:pathology*; D016481:Helicobacter Infections / Q000188:drug therapy / Q000276:immunology / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D018655:Lymphocyte Count; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology* / Q000473:pathology*