title: Pulsed-field gel electrophoresis indicates genotypic heterogeneity among Campylobacter upsaliensis strains.
abstract: To determine the genomic relatedness among a selection of animal and human Campylobacter upsaliensis isolates, macrorestriction profiles were generated for 20 C. upsaliensis strains, among 7 serogroups, using pulsed-field gel electrophoresis (PFGE). XhoI, SalI and SacII restriction enzyme profiles indicated genomic heterogeneity among strains. Using XhoI and SacII restriction enzyme digestion, genomic similarities between some pairs of strains were Lior serogroup specific. The genomic sizes of these isolates varied from 1.74 to 2.09 Mb. These results demonstrate molecular heterogeneity of this species similar to that found among Helicobacter pylori isolates. Among C. upsaliensis strains, PFGE is highly discriminatory and should prove a useful molecular typing method for epidemiological purposes.
authors.affiliation: Division of Gastroenterology, Hospital for Sick Children, M5G 1X8, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Bourke
authors.forename: P M
authors.initials: PM
authors.lastname: Sherman
authors.forename: D
authors.initials: D
authors.lastname: Woodward
authors.forename: H
authors.initials: H
authors.lastname: Lior
authors.forename: V L
authors.initials: VL
authors.lastname: Chan
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001483:Base Sequence; D002167:Campylobacter / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D016172:DNA Fingerprinting; D004262:DNA Restriction Enzymes; D004269:DNA, Bacterial / Q000235:genetics / Q000302:isolation & purification; D015252:Deoxyribonucleases, Type II Site-Specific; D016521:Electrophoresis, Gel, Pulsed-Field; D005838:Genotype; D006801:Humans; D017720:Molecular Epidemiology; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D004262:DNA Restriction Enzymes; C034510:CTCGAG-specific type II deoxyribonucleases; D015252:Deoxyribonucleases, Type II Site-Specific