Activities of daptomycin and comparative antimicrobials, singly and in combination, against extracellular and intracellular Staphylococcus aureus and its stable small-colony variant in human monocyte-derived macrophages and in broth

Antimicrob Agents Chemother. 2008 May;52(5):1829-33. doi: 10.1128/AAC.01480-07. Epub 2008 Mar 10.

Abstract

We investigated the antistaphylococcal activities of daptomycin, gentamicin, and rifampin against two Staphylococcus aureus strains and their stable small-colony variants, singly and in combination, in human monocyte-derived macrophages and in broth. Intracellularly, the three-drug combination and two-drug combinations with rifampin were most effective. Extracellularly, daptomycin, daptomycin plus gentamicin, gentamicin plus rifampin, and the three-drug combination had similar activities.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Cells, Cultured
  • Daptomycin / pharmacology*
  • Gentamicins / pharmacology
  • Humans
  • Macrophages / cytology
  • Macrophages / drug effects*
  • Macrophages / virology
  • Microbial Sensitivity Tests
  • Monocytes / cytology
  • Monocytes / drug effects
  • Monocytes / virology
  • Rifampin / pharmacology
  • Staphylococcus aureus / drug effects*

Substances

  • Anti-Bacterial Agents
  • Gentamicins
  • Daptomycin
  • Rifampin