Activity of the investigational fluoroquinolone finafloxacin against ciprofloxacin-sensitive and -resistant Acinetobacter baumannii isolates

Antimicrob Agents Chemother. 2010 Apr;54(4):1613-5. doi: 10.1128/AAC.01637-09. Epub 2010 Jan 25.

Abstract

This study compared the activity of finafloxacin, a novel fluoroquinolone which shows enhanced activity under acidic pH, and that of ciprofloxacin against Acinetobacter baumannii under standard conditions (pH 7.2) and at a pH of 5.8. Overall, finafloxacin demonstrated superior activity to ciprofloxacin under acidic conditions. Furthermore, finafloxacin showed comparable activity to ciprofloxacin at pH 7.2. Hence, finafloxacin could be a promising new antimicrobial agent for the treatment of A. baumannii infections at acidic body compartments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acinetobacter Infections / drug therapy
  • Acinetobacter Infections / microbiology
  • Acinetobacter baumannii / drug effects*
  • Acinetobacter baumannii / enzymology
  • Acinetobacter baumannii / genetics
  • Acinetobacter baumannii / isolation & purification
  • Amino Acid Substitution
  • Anti-Bacterial Agents / pharmacology*
  • Ciprofloxacin / pharmacology*
  • DNA Gyrase / genetics
  • DNA Topoisomerase IV / genetics
  • Drug Resistance, Bacterial / genetics
  • Drug Resistance, Multiple, Bacterial / genetics
  • Fluoroquinolones / pharmacology*
  • Genes, Bacterial
  • Humans
  • Hydrogen-Ion Concentration
  • In Vitro Techniques
  • Microbial Sensitivity Tests

Substances

  • Anti-Bacterial Agents
  • Fluoroquinolones
  • Ciprofloxacin
  • finafloxacin
  • DNA Topoisomerase IV
  • DNA Gyrase