Resistance to autolysis in vancomycin-selected Staphylococcus aureus isolates precedes vancomycin-intermediate resistance

Antimicrob Agents Chemother. 2003 Jun;47(6):2036-9. doi: 10.1128/AAC.47.6.2036-2039.2003.

Abstract

Four clinical U.S. glycopeptide intermediate resistant Staphylococcus aureus (GISA) isolates were resistant to Triton X-100-induced autolysis. Similar resistance was demonstrated in an isolate obtained after a single passage of a susceptible clinical isolate in low-level vancomycin. Strains with the vancomycin-induced Triton X-100 resistance phenotype produced active murein hydrolases but were resistant to lysis by murein hydrolases.

Publication types

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

MeSH terms

  • Amino Acid Sequence
  • Anti-Bacterial Agents / pharmacology*
  • Base Sequence
  • Humans
  • Molecular Sequence Data
  • N-Acetylmuramoyl-L-alanine Amidase / metabolism
  • Octoxynol / metabolism
  • Sequence Alignment
  • Staphylococcal Infections / microbiology*
  • Staphylococcus aureus / drug effects*
  • Staphylococcus aureus / genetics
  • Staphylococcus aureus / growth & development
  • Staphylococcus aureus / isolation & purification
  • Vancomycin / pharmacology*
  • Vancomycin Resistance

Substances

  • Anti-Bacterial Agents
  • Vancomycin
  • Octoxynol
  • N-Acetylmuramoyl-L-alanine Amidase