title: Direct evidence by DNA fingerprinting that endoscopic cross-infection of Helicobacter pylori is a cause of postendoscopic acute gastritis.
abstract: The DNA fingerprinting of Helicobacter pylori strains in two cases of acute gastritis that occurred after endoscopy was examined. H. pylori was isolated from the stomachs of two patients with acute gastritis and from the stomachs of the patients in whom the same gastrofiberscope had previously been used. The genomic DNA digested with HaeIII was subjected to pulsed-field gel electrophoresis. The corresponding paired electrophoretic patterns were completely identical. These findings provide direct evidence that postendoscopic acute gastritis can be caused by cross-infection with H. pylori via endoscopy.
authors.affiliation: Third Department of Internal Medicine, Hokkaido University School of Medicine, Sapporo, Japan. tsugi@med.hokudai.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Sugiyama
authors.forename: H
authors.initials: H
authors.lastname: Naka
authors.forename: A
authors.initials: A
authors.lastname: Yachi
authors.forename: M
authors.initials: M
authors.lastname: Asaka
mesh_terms: D000208:Acute Disease; D000328:Adult; D003428:Cross Infection / Q000453:epidemiology*; D016172:DNA Fingerprinting; D015252:Deoxyribonucleases, Type II Site-Specific; D016521:Electrophoresis, Gel, Pulsed-Field; D004724:Endoscopy / Q000009:adverse effects*; D005756:Gastritis / Q000209:etiology*; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D015252:Deoxyribonucleases, Type II Site-Specific; C024403:GGCC-specific type II deoxyribonucleases