Assessment of plasmid profile, exoenzyme activity, and virulence in recent human isolates of Yersinia enterocolitica
نویسندگان
چکیده
منابع مشابه
Identification of virulence-associated characteristics in clinical isolates of Yersinia enterocolitica lacking classical virulence markers.
Yersinia enterocolitica is an important enteric pathogen which has well-defined virulence determinants that allow the bacteria to become established in their hosts and overcome host defenses. A number of strains obtained from patients with diarrhea, however, lack these genes. Accordingly, the mechanisms by which they cause disease are uncertain. Most of these isolates belong to biotype 1A. Stra...
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A total of 339 Yersinia strains were tested for virulence-associated autoagglutination and hemagglutinin (HA) production. Autoagglutination was frequent among human clinical isolates belonging to Y. enterocolitica serogroups O:3, O:8, and O:9 and among porcine isolates of serogroups O:3 and O:9. Positive autoagglutination results were also observed in serogroups O:1 and O:2, associated with out...
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The influence of freeze stress at -20 degrees C on the enrichment, isolation, detection, presence of virulence plasmid, and expression of virulence of plasmid-bearing Yersinia enterocolitica (YEP+) inoculated on pork chop medallions was assessed. Pork chop medallions (10 cm2) artificially contaminated with 10, 1, and 0.5 CFU/cm2 of YEP+ strains (serotype O:3) were placed in sterile petri dishes...
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Yersinia enterocolitica: pathogenesis, virulence and antimicrobial resistance.
Yersinia enterocolitica is a heterogeneous group of strains, which are classified into 6 biogroups, and into more than 57 O serogroups. However, the human pathogenic strains most frequently isolated worldwide belong to serogroups O:3, O:5,27, O:8 and O:9. The major route of Y. enterocolitica infection is through contaminated foods or water. The primary pathogenic event is colonization of the in...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 1985
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.22.3.449-451.1985