title: Isolation of Helicobacter canis from a colony of bengal cats with endemic diarrhea.
abstract: On the basis of biochemical, phenotypic, and 16S rRNA analyses, Helicobacter canis was isolated from Bengal cats with and without chronic diarrhea. Because the cats were coinfected with other potential pathogens, including Campylobacter helveticus, and because H. canis was isolated from nondiarrheic cats, the causal role of H. canis in producing the diarrhea could not be proven. Histologically, the colons of the four affected cats were characterized by mild to moderate neutrophilic, plasmacytic, and histocytic infiltrates in the lamina propria. Rare crypt abscesses were also noted for three cats but were a more prominent feature of the colonic lesions noted for the fourth cat. This is the first observation of H. canis in cats and raises the possibility that H. canis, like H. hepaticus and H. bilis in mice, can cause inflammation of the colon, particularly in hosts with immune dysregulation. Further studies are needed to determine the importance of H. canis as a primary enteric pathogen in cats and the role of cats in the possible zoonotic spread of H. canis to humans.
authors.affiliation: Department of Medicine and Epidemiology, Center for Companion Animal Health, School of Veterinary Medicine, University of California, Davis 95616, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Foley
authors.forename: S L
authors.initials: SL
authors.lastname: Marks
authors.forename: L
authors.initials: L
authors.lastname: Munson
authors.forename: A
authors.initials: A
authors.lastname: Melli
authors.forename: F E
authors.initials: FE
authors.lastname: Dewhirst
authors.forename: S
authors.initials: S
authors.lastname: Yu
authors.forename: Z
authors.initials: Z
authors.lastname: Shen
authors.forename: J G
authors.initials: JG
authors.lastname: Fox
mesh_terms: D000818:Animals; D001483:Base Sequence; D002371:Cat Diseases / Q000382:microbiology* / Q000473:pathology; D002415:Cats / Q000382:microbiology*; D003967:Diarrhea / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D016998:Helicobacter / Q000302:isolation & purification*; D015212:Inflammatory Bowel Diseases / Q000382:microbiology; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D012336:RNA, Ribosomal, 16S