Ceftobiprole effective against MRSA

Link: In vitro activity profile of ceftobiprole, an anti-MRSA cephalosporin, against recent Gram-positive and Gram-negative isolates of European origin -- Pillar et al. 61 (3): 595 -- Journal of Antimicrobial Chemotherapy.

Ceftobiprole activity against MRSA (MIC90 2 mg/L) was 4-fold less than the activity against methicillin-susceptible S. aureus (MIC90 0.5 mg/L) and a similar trend was observed for methicillin-resistant CoNS (MIC90 2 mg/L) and methicillin-susceptible CoNS (MIC90 0.25 mg/L). Activity against S. pneumoniae (MIC90s: penicillin-susceptible, 0.015 mg/L; -intermediate, 0.25 mg/L; -resistant, 0.5 mg/L) was comparable to that of ceftriaxone. Ceftobiprole activity against Enterobacteriaceae (MIC90s: ceftazidime-susceptible, 0.12 mg/L; non-susceptible, >32 mg/L), P. aeruginosa (MIC90s: ceftazidime-susceptible, 8 mg/L, non-susceptible, >32 mg/L) and Acinetobacter spp. (MIC90: >32 mg/L for imipenem-susceptible and non-susceptible) was comparable to that of cefepime. As with cefepime, ceftobiprole activity was decreased among cephalosporin-resistant isolates of Gram-negative bacilli [extended-spectrum β-lactamase (ESBL) or non-ESBL mediated]. Conclusions: Ceftobiprole demonstrated potent in vitro activity against MRSA and showed activity against key Gram-negative bacilli comparable to that of cefepime. Given this broad spectrum of activity, ceftobiprole appears well suited for development and use in the treatment of a variety of healthcare-associated infections.