In vivo Pharmacodynamic Target Determination for Delafloxacin against Klebsiella pneumoniae and Pseudomonas aeruginosa in the Neutropenic Murine Pneumonia Model.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY(2019)
Abstract
Delafloxacin is a broad-spectrum anionic fluoroquinolone that has completed a phase 3 study for community-acquired bacterial pneumonia. We investigated the pharmacodynamic target for delafloxacin against 12 Klebsiella pneumoniae and 5 Pseudomonas aeruginosa strains in the neutropenic murine lung infection model. The median 24-h free-drug area under the curve (fAUC)/MIC values associated with net stasis and 1-log kill were 28.6 and 64.1 for K. pneumoniae, respectively. The 24-h fAUC/MIC values associated with net stasis and 1-log kill for P. aeruginosa were 5.66 and 14.3, respectively.
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Key words
Klebsiella,Pseudomonas aeruginosa,delafloxacin,pharmacodynamics
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