title: Antimicrobial activity and beta-lactamase stability of foramidocillin.
abstract: Foramidocillin is a 6-alpha-formamido penicillin with a 6-beta-acylureido side chain. The majority of the Enterobacteriaceae were inhibited by less than or equal to 1 microgram of foramidocillin per ml, and Pseudomonas aeruginosa was inhibited by 4 micrograms/ml. Foramidocillin had activity comparable to those of ceftazidime, imipenem, and aztreonam against beta-lactamase-producing members of the Enterobacteriaceae and P. aeruginosa, and it inhibited organisms resistant to piperacillin. Foramidocillin did not inhibit gram-positive species or anaerobic gram-negative bacteria. Foramidocillin was not hydrolyzed by the common plasmid-mediated beta-lactamases TEM-1, TEM-2, OXA-2, PSE-4, and SHV-1, by the chromosomal beta-lactamases P99 of Enterobacter cloacae and K1 of Klebsiella oxytoca, or by the Sabath-Abraham enzyme of P. aeruginosa.
mesh_terms: D000900:Anti-Bacterial Agents / Q000378:metabolism / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects / Q000201:enzymology; D004355:Drug Stability; D004357:Drug Synergism; D004790:Enzyme Induction / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D010406:Penicillins / Q000378:metabolism / Q000494:pharmacology*; D010539:Permeability; D001618:beta-Lactamases / Q000096:biosynthesis*; D047090:beta-Lactams
chemical_list: D000900:Anti-Bacterial Agents; D010406:Penicillins; D047090:beta-Lactams; C043286:foramidocillin; D001618:beta-Lactamases