title: In vitro antimicrobial susceptibility, genetic diversity and prevalence of UDP-glucose 4-epimerase (galE) gene in Campylobacter coli and Campylobacter jejuni from Turkey production facilities.
abstract: This study evaluated the genetic diversity of multi-drug resistant Campylobacter jejuni (n=44) and C. coli (n=30) isolated from 18 turkey houses. Antimicrobial resistances to ampicillin, ciprofloxacin and nalidixic acid were higher (P<0.05) in C. coli than in C. jejuni strains. PCR analysis indicated that 82% of total isolates tested, including 91% of C. jejuni and 70% of C. coli tested positive for a 496-bp UDP-glucose 4-epimerase (galE) gene. The diversity of isolates was mapped by antibiogram, SmaI-PFGE and flaA-RFLP typing methods using the discriminatory index (DI). RFLP was more suitable in discriminating C. coli (DI=0.895) than PFGE (DI=0.816) or antibiogram profile (DI=0.552), while either PFGE (DI=0.941) or RFLP (DI=0.942) could be used in discriminating C. jejuni strains. The combined PFGE and antibiogram dendrogram had the highest DI for both C. coli (0.910) and C. jejuni (0.968), suggesting that a combination of typing methods is more useful in examining the diverse Campylobacter population on turkey farms.
authors.affiliation: US Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, AR 72079, USA. rnayak@nctr.fda.gov
authors.forename: Rajesh
authors.initials: R
authors.lastname: Nayak
authors.forename: Tabitha
authors.initials: T
authors.lastname: Stewart
authors.forename: Mohamed
authors.initials: M
authors.lastname: Nawaz
authors.forename: Carl
authors.initials: C
authors.lastname: Cerniglia
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D017000:Campylobacter coli / Q000187:drug effects / Q000235:genetics* / Q000302:isolation & purification; D016123:Campylobacter jejuni / Q000187:drug effects / Q000235:genetics* / Q000302:isolation & purification; D004269:DNA, Bacterial / Q000032:analysis*; D024881:Drug Resistance, Bacterial; D016521:Electrophoresis, Gel, Pulsed-Field; D005525:Food-Processing Industry / Q000592:standards; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D008826:Microbial Sensitivity Tests; D016133:Polymerase Chain Reaction / Q000379:methods; D012150:Polymorphism, Restriction Fragment Length; D015995:Prevalence; D013045:Species Specificity; D014422:Turkeys / Q000382:microbiology*; D014534:UDPglucose 4-Epimerase / Q000235:genetics*
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial; D014534:UDPglucose 4-Epimerase