title: Performance of PCR-restriction fragment length polymorphism analysis of the Helicobacter pylori ureB gene in differentiating gene variants.
abstract: Recently, PCR-restriction fragment length polymorphism (PCR-RFLP) of the urease genes of Helicobacter pylori was evaluated in a meta-analysis; acceptable discriminatory indices of the ureAB and C genes were found. In the present investigation, we found a discriminatory index of 0.95 for 191 unrelated clinical H. pylori isolates with PCR-RFLP typing of the ureB gene (933 bp), combining the results obtained with restriction enzymes HaeIII and Sau3A, and a mixture of the enzymes. We therefore find that PCR-RFLP typing of the ureB gene of H. pylori with restriction enzymes HaeIII and Sau3A is comparable to typing of other H. pylori urease genes.
authors.affiliation: Institute of Medical Microbiology and Immunology, Panum Institute, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark. H.Colding@immi.ku.dk
authors.forename: H
authors.initials: H
authors.lastname: Colding
authors.forename: S H
authors.initials: SH
authors.lastname: Hartzen
authors.forename: M
authors.initials: M
authors.lastname: Mohammadi
authors.forename: K
authors.initials: K
authors.lastname: Herup
authors.forename: J E
authors.initials: JE
authors.lastname: Kristiansen
authors.forename: L P
authors.initials: LP
authors.lastname: Andersen
mesh_terms: D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D015252:Deoxyribonucleases, Type II Site-Specific / Q000737:chemistry; D016480:Helicobacter pylori / Q000145:classification / Q000201:enzymology / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D014510:Urease / Q000737:chemistry / Q000235:genetics*
chemical_list: D004269:DNA, Bacterial; D015252:Deoxyribonucleases, Type II Site-Specific; C024405:GATC-specific type II deoxyribonucleases; C024403:GGCC-specific type II deoxyribonucleases; D014510:Urease