title: Cefoperazone (T-1551), a new semisynthetic cephalosporin: comparison with cephalothin and gentamicin.
abstract: The in vitro activity of cefoperazone (T-1551) against almost 9,000 recent clinical isolates at six institutions was tested and compared with that of cephalothin and gentamicin. The modal minimum inhibitory concentrations of cefoperazone were 16- and 4-fold less than those of cephalothin and gentamicin, respectively, against 5,503 strains of Enterobacteriaceae. Species normally resistant to cephalothin, such as indole-positive protease and enterobacters, were almost universally susceptible to cefoperazone. Cefoperazone demonstrated activity comparable to gentamicin against Pseudomonas aeruginosa and other pseudomonads.
mesh_terms: D001419:Bacteria / Q000187:drug effects*; D001441:Bacteroides fragilis / Q000187:drug effects; D002438:Cefoperazone; D002511:Cephalosporins / Q000494:pharmacology*; D002512:Cephalothin / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D004755:Enterobacteriaceae / Q000187:drug effects; D005839:Gentamicins / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D011549:Pseudomonas / Q000187:drug effects
chemical_list: D002511:Cephalosporins; D005839:Gentamicins; D002438:Cefoperazone; D002512:Cephalothin