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Abstract: GES (Guiana Extended Spectrum) carbapenemases belong to ?minor class A carbapenemases? and its prevalence could be underestimated due to the lack of specific tests. The aim of this study was to develop an easy PCR method to differentiate between GES ?-lactamases with or without carbapenemase activity, based on an allelic discrimination system of SNPs that encode E104K and G170S mutations, without need of sequencing. Two pair of primers and Affinity Plus probes, labeled with different fluorophores; FAM/IBFQ and YAK/IBFQ, were designed for each one of the SNPs. This allelic discrimination assay allows to detect in real time the presence of all type of GES- ?-lactamases, being able to differentiate between carbapenemases and extended-spectrum ?-lactamase (ESBL), through a quick PCR test that avoid costly sequencing approaches and could help to decrease the current underdiagnosis of minor carbapenemases that scape of phenotypic screenings.
Fuente: Journal of Microbiological Methods, 2023, 207, 106694
Publisher: Elsevier
Year of publication: 2023
No. of pages: 6
Publication type: Article
DOI: 10.1016/j.mimet.2023.106694
ISSN: 0167-7012,1872-8359
Spanish project: PI18CIII/00030
Publication Url: https://doi.org/10.1016/j.mimet.2023.106694
Consult in UCrea Read publication
PABLO-MARCOS, D.
SILLER, M.
AGÜERO, J.
ÁLVAREZ-JUSTEL, A.
GARCÍA-FERNÁNDEZ, S.
VELASCO DE LA FUENTE, S.
GOICOECHEA, P.
RODRÍGUEZ-LOZANO, J.
OCAMPO-SOSA, A.
LUCAS-FERNÁNDEZ, J.
MARIA DEL CARMEN FARIÑAS ALVAREZ
FERNÁNDEZ, J.
FREILE-RIBOT, P.A.
ARACIL, B.
OTEO-IGLESIAS, J.
CALVO-MONTES, J.
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