Production of bacteriocin-like antagonism by clinical isolates Yersinia enterocolitica

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Abstract

Fourteen clinical isolates of Yersinia enterocolitica serotype 0:3 and four well-documented virulent strains of serotypes 0:3, 0:8, and 0:9 were biotyped and examined for plasmid-associated autoagglutination and calcium dependency and for epithelial cell adherence. These strains were tested for the production of bacteriocin-like antagonism by tryptone soya blood agar at room temperature and at 37°C. By using the cross-streaking method, three clinical isolates produced inhibitory substances at room temperature. The substances were active against a variety of clinical isolates and their plasmid-cured derivatives at both room temperature and 37°C. The inhibition was easier to read after incubation of the cross-streaked plate at 37°C. The inhibition patterns indicate that two of the three producer strains appear to recognize potentially virulent 0:3 strains, with or without the virulence plasmid.

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Cafferkey, M. T., McClean, K., & Drumm, M. E. (1989). Production of bacteriocin-like antagonism by clinical isolates Yersinia enterocolitica. Journal of Clinical Microbiology, 27(4), 677–680. https://doi.org/10.1128/jcm.27.4.677-680.1989

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