Subinhibitory Dalbavancin Attenuates Exotoxin Production from Methicillin-Sensitive and Methicillin-Resistant Staphylococcus aureus In Vitro

Antimicrob Agents Chemother. 2017 Oct 24;61(11):e01090-17. doi: 10.1128/AAC.01090-17. Print 2017 Nov.

Abstract

This study investigated the effects of subinhibitory doses of the lipoglycopeptide antibiotic dalbavancin on Staphylococcus aureus toxin production in vitroS. aureus toxin production levels were compared to those seen with the natural glycopeptide antibiotic vancomycin and with representative beta-lactam and oxazolidinone antibiotics. While neither dalbavancin nor vancomycin adversely affected toxin production, of these glycopeptide antibiotics, only dalbavancin significantly attenuated toxin production at subinhibitory concentrations. These findings support the recent success of dalbavancin for treatment of staphylococcal infections.

Keywords: Staphylococcus aureus; subinhibitory antibiotics; toxin production.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / administration & dosage
  • Anti-Bacterial Agents / pharmacology*
  • Dose-Response Relationship, Drug
  • Enterotoxins / metabolism*
  • Methicillin-Resistant Staphylococcus aureus / drug effects
  • Microbial Sensitivity Tests
  • Oxazolidinones / pharmacology
  • Staphylococcus aureus / drug effects*
  • Staphylococcus aureus / metabolism
  • Staphylococcus aureus / physiology
  • Teicoplanin / administration & dosage
  • Teicoplanin / analogs & derivatives*
  • Teicoplanin / pharmacology
  • Vancomycin / pharmacology

Substances

  • Anti-Bacterial Agents
  • Enterotoxins
  • Oxazolidinones
  • enterotoxin A, Staphylococcal
  • Teicoplanin
  • Vancomycin
  • dalbavancin