Stability of Novel Siderophore Cephalosporin S-649266 against Clinically Relevant Carbapenemases
Open Access
- 1 July 2016
- journal article
- Published by American Society for Microbiology in Antimicrobial Agents and Chemotherapy
- Vol. 60 (7), 4384-4386
- https://doi.org/10.1128/aac.03098-15
Abstract
To better understand the antibacterial activity of S-649266 against carbapenemase producers, its stability against clinically relevant carbapenemases was investigated. The catalytic efficiencies ( k cat / K m ) of IMP-1, VIM-2, and L1 for S-649266 were 0.0048, 0.0050, and 0.024 μM −1 s −1 , respectively, which were more than 260-fold lower than that for meropenem. Only slight hydrolysis of S-649266 against KPC-3 was observed. NDM-1 hydrolyzed meropenem 3-fold faster than S-649266 at 200 μM.Keywords
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