title: In vitro susceptibility of Mycobacterium fortuitum to N-formimidoyl thienamycin and several cephamycins.
abstract: The comparative in vitro activity of N-formimidoyl thienamycin, cefmetazole, cefoxitin, cefotetan (YM-09330), and moxalactam against 13 isolates of Mycobacterium fortuitum was evaluated by agar dilution susceptibility testing. N-Formimidoyl thienamycin inhibited 10 to 12 strains at 6.25 micrograms/ml, cefmetazole inhibited 12 of 13 strains at 12.5 micrograms/ml, cefoxitin inhibited 11 of 13 strains at 25 micrograms/ml, and cefotetan inhibited 11 of 13 strains at 50 micrograms/ml. Moxalactam was less active than the other compounds tested, inhibiting only 9 of 13 strains at 50 micrograms/ml.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002511:Cephalosporins / Q000494:pharmacology*; D002513:Cephamycins / Q000494:pharmacology*; D003470:Culture Media; D015378:Imipenem; D008826:Microbial Sensitivity Tests; D009161:Mycobacterium / Q000187:drug effects*; D013845:Thienamycins / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D002513:Cephamycins; D003470:Culture Media; D013845:Thienamycins; D015378:Imipenem