Ro 13-9904, a long-acting broad-spectrum cephalosporin: in vitro and in vivo studies.
Abstract
Ro 13-9904, a new parenteral cephalosporin, was found to have high in vitro activity against Enterobacteriaceae and other gram-negative bacteria, including various isolates resistant to cefuroxime, cefamandole, cefoxitin, and cefazolin. It showed promising activity against Pseudomonas aeruginosa. Although inhibitory against Staphylococcus aureus at concentrations readily achievable in plasma, it was less potent against this pathogen than cefamandole, cefazolin, or cefuroxime. Isolates of Streptococcus faecalis were uniformly resistant to all the cephalosporins tested. Ro 13-9904 was more active than cefotaxime against Proteus mirabilis, Neisseria gonorrhoeae, Neisseria meningitidis, and Haemophilus influenzae, but less active against S. aureus. Ro 13-9904 was stable to various types of beta-lactamases. Its therapeutic efficacy against experimental septicemias in mice was equal to or slightly superior to that of cefotaxime and SCE-1365 when the antibiotics were administered in repeated subcutaneous doses after bacterial challenge. Cefoperazone, and particularly cefamandole nafate, cefazolin, and mezlocillin were less effective. Although structurally related to cefotaxime and SCE-1365, Ro 13-9904 was found to differ from them in ...Continue Reading
References
Ceftizoxime (FK 749), a new parenteral cephalosporin: in vitro and in vivo antibacterial activities.
Citations
Comparison of the serum bactericidal activity of ceftriaxone/piperacillin and ceftriaxone/netilmicin
Pharmacokinetics of ceftriaxone in patients with renal failure and in those undergoing hemodialysis.
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