Enfermedades infecciosas y microbiologia clinica (English ed.) · 2023
In vitro activity of ceftobiprole and dalbavancin against a collection of coagulase-negative staphylococci isolates from clinical samples with reduced susceptibility to daptomycin and/or resistant to linezolid or glycopeptides.
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Velasco de la Fuente Silvia, Fernández-Martinez Marta, Rodríguez Lozano Jesús, Pablo-Marcos Daniel, Siller María, Calvo Jorge
Аннотация
INTRODUCTION: The aim was to investigate the in vitro activity of ceftobiprole and dalbavancin against a collection of coagulase-negative staphylococci (CoNS) isolates with reduced susceptibility to daptomycin or resistant to linezolid and/or glycopeptides.
METHODS: A total of 228 CoNS were tested using the Vitek-2 AST-626 cards (bioMérieux) and MIC of daptomycin, linezolid, vancomycin and teicoplanin were confirmed by Etest Strips (bioMérieux). Susceptibility testing for ceftobiprole and dalbavancin were performed by CLSI broth microdilution methodology. Results were interpreted according to 2021 EUCAST clinical breakpoints.
RESULTS: Ceftobiprole and dalbavancin were active against 96.0% and 93.0% of CoNS, respectively, MIC90 were 2 and 0.125mg/L. MICs of ceptobiprole were higher against S. hominis and S. haemolyticus (MIC90 4mg/L). Dalbavancin exhibited higher MICs against S. haemolyticus and CoNS with reduced susceptibility to daptomycin and resistant to teicoplanin.
CONCLUSION: Ceftobiprole and dalbavancin demonstrated a high in vitro activity against our collection of CoNS isolates.
METHODS: A total of 228 CoNS were tested using the Vitek-2 AST-626 cards (bioMérieux) and MIC of daptomycin, linezolid, vancomycin and teicoplanin were confirmed by Etest Strips (bioMérieux). Susceptibility testing for ceftobiprole and dalbavancin were performed by CLSI broth microdilution methodology. Results were interpreted according to 2021 EUCAST clinical breakpoints.
RESULTS: Ceftobiprole and dalbavancin were active against 96.0% and 93.0% of CoNS, respectively, MIC90 were 2 and 0.125mg/L. MICs of ceptobiprole were higher against S. hominis and S. haemolyticus (MIC90 4mg/L). Dalbavancin exhibited higher MICs against S. haemolyticus and CoNS with reduced susceptibility to daptomycin and resistant to teicoplanin.
CONCLUSION: Ceftobiprole and dalbavancin demonstrated a high in vitro activity against our collection of CoNS isolates.