title: Single and multiple strain colonization in patients with Helicobacter pylori-associated gastritis: detection by macrorestriction DNA analysis.
abstract: Helicobacter pylori isolates from 18 patients were examined by macrorestriction DNA analysis to determine whether > or = 2 strains can coexist in the human stomach. Four biopsy samples from different sites in each patient's stomach were cultured, and 12-14 clones of H. pylori per patient were analyzed. DNA of 15 of the 18 isolates was digestible: 12 by NotI and 3 by NruI. Within 14 of these digestible isolates, the patterns of all clones were identical. The isolate of 1 patient showed two digestion patterns, a finding that was confirmed by arbitrary primer polymerase chain reaction. The typeable isolates of all patients, except 2 who underwent gastroscopy on the same day, differed markedly from each other. These results indicate a noticeable discrepancy between the pronounced interpatient heterogeneity and the rare intrapatient variation of H. pylori.
authors.affiliation: Department of Clinical Microbiology, University of Vienna, Austria.
authors.forename: A M
authors.initials: AM
authors.lastname: Hirschl
authors.forename: M
authors.initials: M
authors.lastname: Richter
authors.forename: A
authors.initials: A
authors.lastname: Makristathis
authors.forename: P M
authors.initials: PM
authors.lastname: Prückl
authors.forename: B
authors.initials: B
authors.lastname: Willinger
authors.forename: K
authors.initials: K
authors.lastname: Schütze
authors.forename: M L
authors.initials: ML
authors.lastname: Rotter
mesh_terms: D001483:Base Sequence; D017931:DNA Primers / Q000737:chemistry; D004269:DNA, Bacterial / Q000032:analysis*; D015252:Deoxyribonucleases, Type II Site-Specific; D016521:Electrophoresis, Gel, Pulsed-Field; D005260:Female; D005756:Gastritis / Q000382:microbiology*; D016481:Helicobacter Infections / Q000382:microbiology*; D016480:Helicobacter pylori / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length
chemical_list: D017931:DNA Primers; D004269:DNA, Bacterial; C055654:endodeoxyribonuclease NruI; D015252:Deoxyribonucleases, Type II Site-Specific; C038565:GCGGCCGC-specific type II deoxyribonucleases