In vitro activity of ceftobiprole, daptomycin, linezolid, and vancomycin against methicillin-resistant staphylococci associated with endocarditis and bone and joint infection

Mark S. Rouse, James M. Steckelberg, Robin Patel

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

We tested the in vitro activity of 4 antimicrobial agents against methicillin-resistant Staphylococcus aureus and coagulase-negative staphylococci recovered from patients with endocarditis or bone and joint infection. Ceftobiprole, daptomycin, linezolid, and vancomycin MIC90 values were 1, 1, 2, and 1 μg/mL, respectively. Ceftobiprole, daptomycin, linezolid, and vancomycin MBC90 values were 2, 4, ≥128, and 8 μg/mL, respectively. Ceftobiprole MIC and MBC values were ≤2 μg/mL for all isolates tested, with the exception of one methicillin-resistant coagulase-negative Staphylococcus spp isolate. Vancomycin lacked bactericidal activity (defined as an MBC/MIC ratio of ≥32) against 2 methicillin-resistant Staphylococcus aureus (MRSA) isolates from patients with bone and joint infection; one of these isolates was additionally daptomycin nonsusceptible (daptomycin MIC, 2 μg/mL). There was one additional daptomycin nonsusceptible (daptomycin MIC, 2 μg/mL) isolate (MRSA associated with bone and joint infection). Ceftobiprole demonstrated in vitro bactericidal activity against all MRSA and methicillin-resistant coagulase-negative staphylococci tested.

Original languageEnglish (US)
Pages (from-to)363-365
Number of pages3
JournalDiagnostic Microbiology and Infectious Disease
Volume58
Issue number3
DOIs
StatePublished - Jul 1 2007

Keywords

  • Ceftobiprole
  • Daptomycin
  • Linezolid
  • MRSA
  • Staphylococcus
  • Staphylococcus aureus
  • Vancomycin

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases

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