Resistance selection studies comparing the activity of razupenem (PTZ601) to vancomycin and linezolid against eight methicillin-resistant and two methicillin-susceptible Staphylococcus aureus strains.
Antimicrob Agents Chemother
; 53(7): 3118-21, 2009 Jul.
Article
em En
| MEDLINE
| ID: mdl-19433566
ABSTRACT
Multistep and single-step resistance selection studies were performed with razupenem, linezolid, and vancomycin against 10 methicillin (meticillin)-resistant and -susceptible Staphylococcus aureus strains. After 20 daily subcultures, razupenem yielded only clones with MICs of >4 microg/ml in one strain (8 microg/ml) whose parent's MIC was already 4 microg/ml. After 18 to 49 passages in 6/10 strains, razupenem MICs rose from 0.016 to 2 microg/ml (parents) to 0.125 to 8 microg/ml (with clones stable after 10 drug-free subcultures). Single-step mutant selection frequencies were similarly low for razupenem and comparators.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Staphylococcus aureus
/
Vancomicina
/
Oxazolidinonas
/
Staphylococcus aureus Resistente à Meticilina
/
Acetamidas
/
Antibacterianos
Idioma:
En
Revista:
Antimicrob Agents Chemother
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos