Thomson Kenneth S, Moland Ellen Smith
Center for Research in Anti-Infectives and Biotechnology, Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68178, USA.
J Antimicrob Chemother. 2004 Aug;54(2):557-62. doi: 10.1093/jac/dkh328. Epub 2004 Jun 16.
To compare the in vitro activities of the carbapenem, CS-023, four representative beta-lactam antibiotics and levofloxacin, against 970 Gram-positive or Gram-negative US clinical isolates.
Susceptibilities of bacteria chosen for their varying levels of resistance to the comparator agents were determined by NCCLS microdilution methodology.
CS-023 exhibited activity comparable to that of imipenem against most Gram-positive isolates, but was approximately 8-fold more potent against oxacillin-resistant staphylococci. It was comparable to meropenem against most Gram-negative isolates, but was 4- to 8-fold more potent against five isolates of meropenem-resistant Pseudomonas aeruginosa.
If tissue and body fluid concentrations >8 mg/L can safely be achieved, further studies of CS-023 are warranted to determine its clinical efficacy.
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