In vitro activity of daptomycin against Staphylococci isolated from bacteremia and community-onset skin and soft tissue infections in France: data from two nationwide studies

Eur J Clin Microbiol Infect Dis. 2009 Oct;28(10):1209-15. doi: 10.1007/s10096-009-0764-y. Epub 2009 Jun 6.

Abstract

Staphylococci are a leading cause of skin and soft tissue infections (SSTIs) and bacteremia in France, a country with a high prevalence of oxacillin resistance. We evaluated the in vitro activity of daptomycin compared with reference compounds against 445 Staphylococcus aureus and 53 coagulase-negative Staphylococci (CNS) collected during two large nationwide studies performed in 2006 and 2007. The percentage of oxacillin resistance among S. aureus was 13.6% (SSTIs) and 30.7% (bacteremia). Daptomycin showed lower MIC(90) levels compared to vancomycin, teicoplanin, and linezolid (0.19 mg/L vs. 2, 1.5, and 1 mg/L, respectively), irrespective of oxacillin susceptibility. Amongst the CNS, 64.2% of the isolates originated from clinical bacteremia were resistant to oxacillin and 24.5% to teicoplanin; all but one Staphylococci were susceptible to daptomycin (MIC = 1.5 mg/l). As with linezolid, daptomycin seems to constitute an alternative option to treat some staphylococcal infections in the French context of high oxacillin resistance prevalence and high glycopeptides MIC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use*
  • Bacteremia / drug therapy*
  • Bacteremia / microbiology
  • Coagulase / metabolism
  • Colony Count, Microbial
  • Community-Acquired Infections / drug therapy
  • Community-Acquired Infections / microbiology
  • Daptomycin / pharmacology
  • Daptomycin / therapeutic use*
  • Dose-Response Relationship, Drug
  • Drug Resistance, Bacterial
  • France
  • Humans
  • Microbial Sensitivity Tests
  • Oxacillin / pharmacology
  • Oxacillin / therapeutic use
  • Soft Tissue Infections / drug therapy*
  • Soft Tissue Infections / microbiology
  • Staphylococcal Infections / drug therapy*
  • Staphylococcal Infections / microbiology
  • Staphylococcal Skin Infections / drug therapy*
  • Staphylococcal Skin Infections / microbiology
  • Staphylococcus / drug effects
  • Staphylococcus / enzymology
  • Treatment Outcome

Substances

  • Anti-Bacterial Agents
  • Coagulase
  • Daptomycin
  • Oxacillin