Evaluation of Bactericidal Activities of LY333328, Vancomycin, Teicoplanin, Ampicillin-Sulbactam, Trovafloxacin, and RP59500 Alone or in Combination with Rifampin or Gentamicin against Different Strains of Vancomycin-Intermediate Staphylococcus aureus by Time-Kill Curve Methods

Author:

Hershberger Ellie12,Aeschlimann Jeffrey R.12,Moldovan Tabitha1,Rybak Michael J.123

Affiliation:

1. Anti-Infective Research Laboratory, Department of Pharmacy Services, Detroit Receiving Hospital and University Health Center,1

2. College of Pharmacy and Allied Health Professions,2 and

3. Department of Internal Medicine, Division of Infectious Diseases, School of Medicine,3 Wayne State University, Detroit, Michigan

Abstract

ABSTRACT This in vitro study evaluated the activities of vancomycin, LY333328, and teicoplanin alone and in combination with gentamicin, rifampin, and RP59500 against Staphylococcus aureus isolates with intermediate susceptibilities to vancomycin. Ampicillin-sulbactam and trovafloxacin were also evaluated. LY333328 and ampicillin-sulbactam resulted in bactericidal activity against all isolates. The combination of gentamicin with glycopeptides showed synergistic activity, while rifampin had no added benefit.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

Reference9 articles.

1. Boyce J. M. Medeiros A. A. Hiramatsu K. Clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA) from the United States with subpopulations of cells with reduced susceptibility to vancomycin abstr. LB-15. Abstracts of the 37th Interscience Conference on Antimicrobial Agents and Chemotherapy. 1997 American Society for Microbiology Washington D.C

2. Reduced susceptibility of Staphylococcus aureus to vancomycin—Japan, 1996.;Centers for Disease Control and Prevention;Morbid. Mortal. Weekly Rep.,1997

3. Serum bactericidal activity of rifampin in combination with other antimicrobial agents against Staphylococcus aureus

4. Methicillin-resistant Staphylococcus aureus clinical strain with reduced vancomycin susceptibility.;Hiramatsu K.;J. Antimicrob. Chemother.,1997

5. Vancomycin-gentamicin synergism revisited: effect of gentamicin susceptibility of methicillin-resistant Staphylococcus aureus

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