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Characteristics of Yersinia pseudotuberculosis isolated from animals in Brazil
Author(s) -
Martins C. H. G.,
Bauab T. M.,
Falcão D. P.
Publication year - 1998
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/j.1365-2672.1998.00579.x
Subject(s) - yersinia pseudotuberculosis , salicin , microbiology and biotechnology , biology , plasmid , virulence , congo red , strain (injury) , chemistry , gene , genetics , organic chemistry , adsorption , anatomy
Strains (105) of Yersinia pseudotuberculosis isolated in Brazil between 1982 and 1990 were bio‐serotyped. They were also studied for plasmid profile, autoagglutination and calcium dependence at 37 °C, Congo red uptake, pyrazinamidase activity, esculin hydrolysis, salicin fermentation and drug sensitivity: 95·24% were biotype 2, serogroup O:3; 2·86% were biotype 1, serogroup O:1; and 1·90% were biotype 2, non‐agglutinable. Plasmids were found in 77·14% of the strains (one in each strain). There was total correlation between the presence of the virulence plasmid and autoagglutination, calcium dependence at 37 °C and Congo red uptake. The esculin, salicin and pyrazinamidase tests were not efficient in differentiating pathogenic from non‐pathogenic Y. pseudotuberculosis isolates. All strains were highly sensitive to the drugs used. These results indicate that Y. pseudotuberculosis is a potential pathogen for humans in Brazil, especially because the bio‐serogroups detected among animals are those most frequently associated with human diseases.