13 research outputs found
Antimicrobial resistance profiles of enterococci isolated from poultry meat and pasteurized milk in Rio de Janeiro, Brazil
Surveillance for vancomycin-resistant enterococci colonization among patients of a liver transplant program
PCR-RFLP of 16S ribosomal DNA to confirm the identification of Enterococcus gallinarum and Enterococcus casseliflavus isolated from clinical and food samples PCR-RFLP do 16S DNA ribossomal para confirmar a identificação de Enterococcus gallinarum e Enterococcus casseliflavus isolados de amostras clínicas e alimentares
INTRODUCTION: This study aimed to confirm the identification of Enterococcus gallinarum and Enterococcus casseliflavus isolated from clinical and food samples by PCR-RFLP. METHODS: Fifty-two strains identified by conventional biochemical exams were submitted to PCR amplification and digested with HinfI. Only 20 (38.5%) of the 52 strains showed a DNA pattern expected for E. gallinarum and E. casseliflavus. RESULTS: Analysis of the results of this study showed that E. gallinarum and E. casseliflavus are occasionally erroneously identified and confirmed the potential application of 16S rDNA analysis for accurate identification of these species. CONCLUSIONS: A correct identification is important to distinguish between intrinsic and acquired vancomycin resistance.<br>INTRODUÇÃO: O objetivo deste estudo foi confirmar a identificação de amostras clínicas e alimentos de Enterococcus gallinarum e Enterococcus casseliflavus por PCR-RFLP. MÉTODOS: Cinquenta e duas cepas identificadas por exames bioquímicos convencionais foram submetidos a amplificação por PCR e digestão com HinfI. Apenas 20 (38,5%) das 52 amostras apresentaram um padrão de DNA esperado E. gallinarum e E. casseliflavus. RESULTADOS: Analise dos resultados deste estudo demonstraram que, algumas vezes E. gallinarum e E. casseliflavus são erroneamente identificados e confirmaram a potencial aplicação da análise do 16S rDNA para identificação exata destas espécies. CONCLUSÕES: A correta identificação é importante a fim de distinguir entre resistência intrínseca e adquirida à vancomicina
Rapid detection of Van genes in rectal swabs by real time PCR in Southern Brazil
INTRODUCTION: Laboratory-based surveillance is an important component in the control of vancomycin resistant enterococci (VRE). METHODS: The study aimed to evaluate real-time polymerase chain reaction (RT-PCR) (genes vanA-vanB) for VRE detection on 115 swabs from patients included in a surveillance program. RESULTS: Sensitivity of RT-PCR was similar to primary culture (75% and 79.5%, respectively) when compared to broth enriched culture, whereas specificity was 83.1%. CONCLUSIONS: RT-PCR provides same day results, however it showed low sensitivity for VRE detection