title: In vitro evaluation of SF-2103A, a novel carbapenem antibiotic, as a beta-lactamase inhibitor.
abstract: SF-2103A, a new carbapenem antibiotic, exhibited a broad antibacterial spectrum and a potent inhibitory activity against a wide range of beta-lactamases, in particular, against cephalosporinases, with lower I50 values than those displayed by sulbactam and clavulanic acid. Using a fixed combination and checkerboard titration, in vitro synergy against the majority of the beta-lactamase-producing strains tested was demonstrated between SF-2103A and various beta-lactam antibiotics, especially cefotaxime, ceftizoxime, and cefoperazone. The synergistic effect of SF-2103A was more pronounced than that of sulbactam. The in vitro synergy was also confirmed by bactericidal and bacteriolytic activities and morphological effects.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D001433:Bacteriolysis / Q000187:drug effects; D015780:Carbapenems; D004357:Drug Synergism; D010397:Penicillanic Acid / Q000494:pharmacology; D011514:Proteus vulgaris / Q000187:drug effects; D013407:Sulbactam; D065093:beta-Lactamase Inhibitors
chemical_list: D000900:Anti-Bacterial Agents; D015780:Carbapenems; D065093:beta-Lactamase Inhibitors; C035072:pluracidomycin; D010397:Penicillanic Acid; D013407:Sulbactam