Atypical Helicobacter canadensis Strains Associated with Swine

Author:

Inglis G. Douglas1,McConville Malcolm2,de Jong Anno3

Affiliation:

1. Food Safety and Quality National Program, Agriculture and Agri-Food Canada Research Centre, 5403 1st Avenue S, Lethbridge, Alberta, T1J 4B1, Canada

2. Charles River Laboratories, Tranent, Edinburgh EH33 2NE, United Kingdom

3. Bayer HealthCare AG, Animal Health Division, 51368 Leverkusen, Germany

Abstract

ABSTRACT Forty-two Helicobacter isolates were isolated from swine feces in The Netherlands and Denmark. All 12 isolates sequenced (16S rRNA gene) formed a robust clade with Helicobacter canadensis (∼99% similarity). Species-specific PCR indicated that all of the isolates were H. canadensis isolates. Although the appearance of the porcine isolates was similar to the appearance of H. canadensis , only one of these isolates was able to hydrolyze indoxyl acetate, a cardinal characteristic of this taxon. Examination of the 23S rRNA and hsp60 genes revealed high levels of similarity between the porcine isolates and H. canadensis . However, amplified fragment length polymorphism genomic typing showed that isolates recovered from swine feces were genetically distinct from H. canadensis strains obtained from humans and geese.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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