NCIt definition : The sodium salt of ertapenem, a 1-beta-methyl carbapenem and a broad-spectrum beta-lactam
antibiotic with bactericidal activity. Ertapenem binds to penicillin binding proteins
(PBPs) located on the bacterial cell wall, in particular PBPs 2 and 3, thereby inhibiting
the final transpeptidation step in the synthesis of peptidoglycan, an essential component
of the bacterial cell wall. Inhibition of peptidoglycan synthesis results in weakening
and lysis of the cell wall and cell death. In vitro, this agent has shown activity
against Gram-positive and Gram-negative aerobic and anaerobic bacteria. Erapenem is
resistant to hydrolysis by a variety of beta-lactamases, including penicillinases,
cephalosporinases and extended-spectrum beta-lactamases.;