RESUMEN
KPC-type carbapenemases are emerging in Klebsiella pneumoniae and other Gram-negative pathogens worldwide. Rapid and sensitive detection of these resistance determinants has become relevant to clinical management and infection control. We evaluated the bioMérieux EasyQ real-time PCR assay for bla(KPC) detection with 300 members of the Enterobacteriaceae, including 29 control strains producing known carbapenemases and 271 nonreplicate clinical isolates. The EasyQ assay correctly detected all of the 111 isolates harboring bla(KPC) genes, with no false positives, and results were available within 2 h.
Asunto(s)
Proteínas Bacterianas/genética , Técnicas Bacteriológicas/métodos , Enterobacteriaceae/enzimología , Enterobacteriaceae/genética , Técnicas de Diagnóstico Molecular/métodos , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Resistencia betalactámica , beta-Lactamasas/genética , Enterobacteriaceae/aislamiento & purificación , Infecciones por Enterobacteriaceae/microbiología , Humanos , Sensibilidad y Especificidad , Factores de TiempoRESUMEN
We evaluated the reliability of the Bruker Daltonik's MALDI Biotyper system in species-level identification of yeasts directly from blood culture bottles. Identification results were concordant with those of the conventional culture-based method for 95.9% of Candida albicans (187/195) and 86.5% of non-albicans Candida species (128/148). Results were available in 30 min (median), suggesting that this approach is a reliable, time-saving tool for routine identification of Candida species causing bloodstream infection.