Efficacy of ampicillin plus arbekacin in experimental rabbit endocarditis caused by an Enterococcus faecalis strain with high-level gentamicin resistance

Antimicrob Agents Chemother. 2000 Sep;44(9):2545-6. doi: 10.1128/AAC.44.9.2545-2546.2000.

Abstract

Enterococcus faecalis LC40 is an ampicillin-susceptible clinical isolate with high-level gentamicin resistance due to the aac(6')-Ie-aph(2")-Ia aminoglycoside resistance gene. The combination of ampicillin plus arbekacin reduced mean bacterial vegetation counts significantly more than ampicillin alone or ampicillin plus gentamicin in a rabbit model of aortic-valve endocarditis caused by E. faecalis LC40.

Publication types

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

MeSH terms

  • Aminoglycosides*
  • Ampicillin / therapeutic use*
  • Animals
  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use*
  • Dibekacin / analogs & derivatives*
  • Dibekacin / therapeutic use*
  • Disease Models, Animal
  • Drug Resistance, Microbial / physiology
  • Drug Therapy, Combination / therapeutic use*
  • Endocarditis, Bacterial / drug therapy*
  • Endocarditis, Bacterial / microbiology
  • Enterococcus faecalis / drug effects
  • Gentamicins / pharmacology
  • Gram-Positive Bacterial Infections / drug therapy*
  • Gram-Positive Bacterial Infections / microbiology
  • Microbial Sensitivity Tests
  • Rabbits
  • Treatment Outcome

Substances

  • Aminoglycosides
  • Anti-Bacterial Agents
  • Gentamicins
  • Dibekacin
  • Ampicillin
  • arbekacin