Attenuated vancomycin bactericidal activity against Staphylococcus aureus hemB mutants expressing the small-colony-variant phenotype

Antimicrob Agents Chemother. 2008 Apr;52(4):1533-7. doi: 10.1128/AAC.01254-07. Epub 2008 Feb 19.

Abstract

The in vitro bactericidal activities of vancomycin against Staphylococcus aureus hemB mutants displaying the small-colony-variant phenotype and their parental strains were evaluated. Vancomycin killing activities against hemB mutants were markedly attenuated, demonstrating approximately 50% less effect, a result which was well described by a Hill-type pharmacodynamic model.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Hemin / genetics*
  • Humans
  • Microbial Sensitivity Tests
  • Mutation*
  • Phenotype
  • Staphylococcus aureus / classification
  • Staphylococcus aureus / drug effects*
  • Staphylococcus aureus / genetics
  • Staphylococcus aureus / growth & development
  • Vancomycin / pharmacology*

Substances

  • Anti-Bacterial Agents
  • Vancomycin
  • Hemin