Enterococcus in wound infections: Virulence and antimicrobial resistance

Dworniczek, Ewa and Piwowarczyk, Justyna and Bania, Jacek and Kowalska-Krochmal, Beata and Wałecka, Ewa and Seniuk, Alicja and Dolna, Izabela and Gościniak, Grażyna (2012) Enterococcus in wound infections: Virulence and antimicrobial resistance. Acta Microbiologica et Immunologica Hungarica, 59 (2). pp. 263-269. ISSN 1217-8950

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Abstract

Enterococci, a complex group of facultative pathogens have become increasingly isolated in various hospital settings. They are considerable frequently cultured from traumatic and surgical wounds. We investigated 57 strains of the species E. faecalis, E. faecium and E. casseliflavus isolated from infected wounds. Their ability to produce virulence factors and their sensitivity to antibiotics were evaluated using phenotypic and genotyping methods. In the phenotype studies, significant portion of the isolates produced biofilm (66.7%) and gelatinase (36.8%). Nearly 30% of the strains expressed hemolytic properties. Only a few produced DNAse (15.8%) and lipase (7.0%). The genes esp, gelE, cylA, cylB, cylM and agg were detected in most of the isolates (38.6–87.7%). All the isolated enterococci were susceptible to vancomycin and were characterized by their low resistance to antibiotics, except aminoglycosides (HLR).

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