MARCADORES DE PATOGENICIDADE EM Yersinia enterocolitica O: 3 ISOLADAS DE SUÍNOS DO RIO DE JANEIRO

Pesquisa Veterinária Brasileira

Tereza C. A. Leal²  Nilma C. Leal¹  Alzira M. P. Almeida¹ 

[1] ,Fundação Oswaldo CruzRecife PE

关键词: Yersinia enterocolitica;    swine;    genetic;    markers;    pathogenicity;    Yersinia enterocolitica;    suínos;    marcadores genéticos;    patogenicidade;   

DOI  :  10.1590/S0100-736X1997000100004

来源: SciELO

【 摘 要 】

Sixteen Yersinia enterocolitica serotype O:3 strains, isolated from pigs from Rio de Janeiro, have been analyzed for genetic and phenotypic markers of pathogenicity. It was observed that only 6 strains harbored the pYV (+70 kb) plasmid and one strain harbored a small cryptic plasmid of about 8.6 kb. Accordingly only strains harboring pYV were calcium dependent in the MOX medium at 370C. Twelve strains showed pesticin sensitivity and the esculin reaction was negative in 13 strains. PCR analysis of pathogenicity genes using specific primers showed the presence of the ail gene in 14 strains, the irp2 gene in one and the psaA in none. Most of the strains were resistant to ampicillin and carbenicillin, although they were susceptible to sulfazotrin and cefoxitin. For chloramphenicol, tetracycline, kanamycin, gentamicin and nalidixic acid the results varied among the strains.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License