Artículo
Phenotypic detection of plasmid-mediated colistin resistance in Enterobacteriaceae
Gonzales Escalante, Edgar; Yauri Condor, Katherine; Di Conza, José Alejandro
; Gutkind, Gabriel Osvaldo
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
12/2019
Editorial:
American Society for Microbiology
Revista:
Journal of Clinical Microbiology
ISSN:
0095-1137
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this work was to evaluate an easy-to-perform assay basedupon inhibition of mobile colistin resistance (MCR) activity by EDTA. We included 92nonrelated isolates of Enterobacteriaceae (74 Escherichia coli, 17 Klebsiella pneumoniae,and 1 Serratia marcescens). Our proposed method is based on a modificationof the colistin agar-spot screening test (CAST), a plate containing 3 g/ml colistin,by adding an extra plate of colistin agar-spot supplemented with EDTA (eCAST).Bacterial growth was evaluated after 24 h of incubation at 35°C. All the colistinresistantisolates showed development on the CAST plates. Colistin-resistant K. pneumoniaewithout mcr-1 and S. marcescens also grew on the eCAST plates. In contrast,colistin-resistant MCR-producing E. coli was not able to grow in eCAST plates. Thecombined CAST/eCAST test could provide a simple and easy-to-perform method todifferentiate MCR-producing Enterobacteriaceae from those in which colistin resistanceis mediated by chromosomal mechanisms.
Palabras clave:
MCR
,
ENTEROBACTERIACEAE
,
COLISTIN
,
EDTA
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Articulos(OCA HOUSSAY)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA HOUSSAY
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA HOUSSAY
Citación
Gonzales Escalante, Edgar; Yauri Condor, Katherine; Di Conza, José Alejandro; Gutkind, Gabriel Osvaldo; Phenotypic detection of plasmid-mediated colistin resistance in Enterobacteriaceae; American Society for Microbiology; Journal of Clinical Microbiology; 12-2019; 1-16
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