Plásmido de virulencia en Yersinia enterocolitica O: 3 de origen murino

• Autores: Justo Zamora B, Germán Reinhardt V, Pamela Macías H
• Localización: Revista Médica de Chile, ISSN-e 0034-9887, Vol. 126, Nº. 7, 1998, págs. 788-792
• Idioma: español
• Títulos paralelos:
  • Virulence plasmid in Yersinia enterocolitica O: 3 of murine origin
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• Resumen

  • Background: Pathogenic strains of Yersinia enterocolitica harbor a virulence plasmid of 45-48 megadalton that can be detected using different techniques. Rodents are important reservoirs of Y enterocolitica. Aim: To investigate the carrier status of Y enterocolitica in murine rodents. Material and methods: Two hundred sixty one mice and rats were captured in rural and urban areas of Valdivia. Y enterocolitica was cultured from viscera and fecal homogenates. Virulence plasmids were detected using crystal violet binding. Results: Thirteen Y enterocolitica strains were isolated from 11 rodents. Ten strains belonged to the biotype 1 and three to the biotype 4, serotype O:3. The most frequently infected rodent species were R norvergicus (20%), followed by A longipilis (11%), A olivaceus (2%) and O longicaudatus (2%). Conclusions: Rodents, and specially the domestic rat, can be an important source of Y enterocolitica infection for human and susceptible animal species.