Cefotaxime, cephalothin, and cephapirin: antimicrobial activity and synergy studies of cephalosporins with significant in vivo desacetyl metabolite concentrations |
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Authors: | R N Jones R R Packer |
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Affiliation: | 1. Department of Pathology, Kaiser Regional Laboratory (Oregon Region), Clackamas, Oregon USA;2. The Clinical Microbiology Institute, Tualatin, Oregon USA |
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Abstract: | The desacetyl metabolites of cefotaxime, cephalothin, and cephapirin were 5-55% as active as the parent drug, depending upon the bacterial species tested. Synergy or partial synergy was demonstrated in 64% of 25 strains of Enterobacteriaceae and Staphylococcus aureus tested against cephalothin/desacetylcephalothin and cephapirin/desacetylcephapirin combinations. Some species variations were identified that influenced synergy rates, particularly among the S. aureus strains (for example, highest rates for cephapirin). |
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Keywords: | Address reprint requests to: Dr. Ronald N. Jones Director of Laboratories Department of Pathology Kaiser Regional Laboratory (Oregon Region) Clackamas OR 97015 USA. |
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