ABSTRACT
In the present study, Staphylococcus (S.) hyicus strains isolated in Russia (n = 23) and Germany (n = 17) were investigated for the prevalence of the previously described genes sheta and shetb. Sheta was detected in 16 S. hyicus strains. Sheta-positive strains were mainly found among strains isolated from exudative epidermitis, and frequently together with the exfoliative toxin-encoding genes exhD and exhC. Partial sequencing of sheta in a single S. hyicus strain revealed an almost complete match with the sheta sequence obtained from GenBank. None of the S. hyicus strains displayed a positive reaction with the shetb-specific oligonucleotide primer used in the present study. According to the present results, the exotoxin encoding gene sheta seems to be distributed among S. hyicus strains in Russia and Germany. The toxigenic potential of this exotoxin, which does not have the classical structure of a staphylococcal exfoliative toxin, remains to be elucidated.
Subject(s)
Animals , Cattle , Dogs , Cattle Diseases/epidemiology , DNA Primers , Dog Diseases/epidemiology , Epidermitis, Exudative, of Swine/epidemiology , Exfoliatins/genetics , Germany , Pneumonia/epidemiology , Russia , Staphylococcal Infections/immunology , Staphylococcus aureus/genetics , Swine , Swine Diseases/epidemiology , Virulence/genetics , Virulence Factors/geneticsABSTRACT
Staphylococcus hyicus isolados de leitöes com lesöes de pele foram estudados no que se refere aos seus plasmídios e resistência a agentes antimicrobianos. Plasmídios de diferentes pesos moleculares foram detectados nas seis amostras de Staphylococcus hyicus. Todas as amostras mostraram resistência à tetraciclina e um pequeno plasmídio de 4.0 Kb, com uma exceçäo. Experimentos de cura e transformaçäo demonstraram que este plasmídio abriga o determinante genético para resistência à tetraciclina nas amostras estudadas