Different formulations of vancomycin: In vitro antimicrobial activity against clinical isolates of methicillin-resistant Staphylococcus aureus.
Diagn Microbiol Infect Dis
; 92(4): 332-337, 2018 Dec.
Article
em En
| MEDLINE
| ID: mdl-30033164
ABSTRACT
We compared in vitro antimicrobial activity of four vancomycin formulations used clinically against clinical isolates of Staphylococcus aureus, including methicillin-resistant and -susceptible (MRSA and MSSA, respectively), using different susceptibility assays. The minimal inhibitory concentrations (MICs) against MRSA clinical isolates were significantly different for some vancomycin formulations by the broth microdilution and agar dilution methods. However, these variations would not compromise their clinical use, since the MICs were within the range recommended by the Clinical and Laboratory Standards Institute. Furthermore, 26.9% of MRSA clinical isolates showed a vancomycin MIC ≥1.5⯵g/mL according to the Etest® method but none by broth microdilution. Regarding quality, all formulations were in accordance with United States Pharmacopeia criteria. Our results showed that all vancomycin formulations tested showed similar in vitro antimicrobial activity, making them suitable for clinical use, and that the evaluation method chosen to determine sensitivity to this antimicrobial should be carefully performed, particularly for MRSA.
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Base de dados:
MEDLINE
Assunto principal:
Infecções Estafilocócicas
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Vancomicina
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Testes de Sensibilidade Microbiana
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Composição de Medicamentos
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Staphylococcus aureus Resistente à Meticilina
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Antibacterianos
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article