Journal of Antimicrobial Chemotherapy (2002) 49, 395-398
© 2002 The British Society for Antimicrobial Chemotherapy
Brief report |
Meropenem stability to ß-lactamase hydrolysis and comparative in vitro activity against several ß-lactamase-producing Gram-negative strains
a Dipartimento di Scienze e Tecnologie Biomediche, Università dellAquila, Via Vetoio, 67100 LAquila; b Medical Department AstraZeneca, Milan, Italy
The interaction between meropenem and class A, B, C and D ß-lactamases was studied by a spectrophotometric method. Class A, C and D ß-lactamases were unable to confer in vitro resistance to carbapenems. Surprisingly, several class B metallo-ß-lactamases expressed in Escherichia coli failed to confer resistance when a conventional inoculum (105 cfu/mL) was used.
* Corresponding author. Tel: +39-0862-433455; Fax: +39-0862-433433; E-mail: amicosante{at}cc.univaq.it