The antimicrobial susceptibility, biofilm formation and genotypic profiles of Staphylococcus haemolyticus from bloodstream infections

AUTOR(ES)

Silva, Patricia Vollu, Cruz, Raquel Souza, Keim, Luiz Sergio, Paula, Geraldo Renato de, Carvalho, Bernadete Teixeira Ferreira, Coelho, Leonardo Rocchetto, Carvalho, Maria Cicera da Silva, Rosa, Joel Mauricio Correa da, Figueiredo, Agnes Marie Sa, Teixeira, Lenise Arneiro

FONTE

Mem. Inst. Oswaldo Cruz

DATA DE PUBLICAÇÃO

2013-09

RESUMO

We analysed the antimicrobial susceptibility, biofilm formation and genotypic profiles of 27 isolates of Staphylococcus haemolyticus obtained from the blood of 19 patients admitted to a hospital in Rio de Janeiro, Brazil. Our analysis revealed a clinical significance of 36.8% and a multi-resistance rate of 92.6% among these isolates. All but one isolate carried the mecA gene. The staphylococcal cassette chromosome mec type I was the most prevalent mec element detected (67%). Nevertheless, the isolates showed clonal diversity based on pulsed-field gel electrophoresis analysis. The ability to form biofilms was detected in 66% of the isolates studied. Surprisingly, no icaAD genes were found among the biofilm-producing isolates.

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