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  • Title: Activities of ceftobiprole and other beta-lactams against Streptococcus pneumoniae clinical isolates from the United States with defined substitutions in penicillin-binding proteins PBP 1a, PBP 2b, and PBP 2x.
    Author: Davies TA, Shang W, Bush K.
    Journal: Antimicrob Agents Chemother; 2006 Jul; 50(7):2530-2. PubMed ID: 16801437.
    Abstract:
    The activities of ceftobiprole and other beta-lactams were examined with 30 Streptococcus pneumoniae isolates containing multiple pbp1a, pbp2b, and pbp2x mutations. The highest ceftobiprole MIC was 1 microg/ml, while the comparator MICs were 16 to 64 microg/ml. Fifty percent inhibitory concentrations for penicillin-binding protein 2x were 0.5 microg/ml (ceftobiprole) and 4 microg/ml (ceftriaxone) in a penicillin- and ceftriaxone-resistant isolate.
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