| in vitro antimicrobial activity of linezolid tested against vancomycin-resistant enterococci isolated in brazilian hospitals. | the emergence of vancomycin-resistant enterococci (vre) has been described recently in brazil. this is in contrast to the usa and europe, where the vre appeared in the late 1980s. the progressive increase in vre isolation poses important problems in the antimicrobial therapy of nosocomial infections. treatment options and effective antimicrobial agents for vre are often limited and the possibility of transfer of vancomycin genes to other gram-positive microorganisms continues. in the search for ... | 2003 | 11779450 |
| phenotypic and genotypic characterization of vana enterococcus isolated during the first nosocomial outbreak in brazil. | we report the phenotypic and genotypic characterization of 50 vana enterococcus clinical isolates from infected patients and 97 isolates from colonized patients obtained during a nosocomial outbreak in a single hospital in são paulo, brazil during 1998. the identification of strains to the species level by conventional biochemical and phenotypic tests and by multiplex pcr assay had 100% agreement. both e. faecalis and e. faecium were isolated from patients during this outbreak. the vana genotype ... | 2003 | 12959407 |
| molecular characterization of van genes found in vancomycin-resistant enterococcus spp. isolated from the hospital das clínicas, fmusp, são paulo, brazil. | vancomycin-resistant enterococci strains (vre) is an important pathogen related with hospital infections in many countries, presenting limited or no therapeutic options for treating serious infections. vre has presented some different genotypes been vana and vanb considered to be the most important in hospital environments. in the present study the authors investigated the prevalence of van genes (a, b an c) among clinical isolates of vre in a five month period at a large tertiary hospital in sa ... | 2003 | 14499039 |
| molecular characterization of vancomycin-resistant enterococci strains eight years apart from its first isolation in são paulo, brazil. | e. faecium was the first reported vre species, carrying the vana gene in brazil. in spite of this, vancomycin-resistant e. faecalis has become the predominant species in brazilian hospitals. the aim of this study was to evaluate the genetic relatedness of vres isolated in a brazilian teaching hospital eight years apart from its first isolation. we analyzed 38 vre strains obtained from 81 surveillance cultures of patients admitted to the four largest intensive care units in hospital são paulo in ... | 2008 | 18813755 |
| clinical, epidemiological, and microbiological characteristics of bacteremia caused by high-level gentamicin-resistant enterococcus faecalis. | enterococcus spp bacteremia is associated with high mortality and the appearance of high-level gentamicin resistance (hlgr) created additional challenges for the treatment of these infections. we evaluated the epidemiological and clinical characteristics of patients with bacteremias caused by hlgr and non_hlgr enterococcus faecalis isolates at a teaching hospital in the state of são paulo, brazil. patients with bacteremia due to e. faecalis diagnosed between january 1999 and december 2003 were i ... | 2008 | 19030711 |
| clonal dissemination of vana-type glycopeptide-resistant enterococcus faecalis between hospitals of two cities located 100 km apart. | nosocomial dissemination of glycopeptide-resistant enterococci represents a major problem in hospitals worldwide. in brazil, the dissemination among hospitals in the city of são paulo of polyclonal dna profiles was previously described for vancomycin-resistant enterococcus faecium. we describe here the dissemination of vana phenotype e. faecalis between two hospitals located in different cities in the state of são paulo. the index outbreak occurred in a tertiary care university hospital (hcusp) ... | 2004 | 15334199 |
| evaluation of the prevalence and risk factors for colonization by vancomycin-resistant enterococcus among patients on dialysis. | vancomycin-resistant enterococcus (vre) has been reported among long-term dialysis patients, although risk factors for vre colonization are not well defined. this study aims to appraise the prevalence and risk factors for vre colonization among patients on long-term dialysis therapy, as well as the mechanisms for dissemination of vancomycin resistance. | 2004 | 15264193 |
| inter-hospital dissemination of glycopeptide-resistant enterococcus faecalis in brazil. | the antimicrobial susceptibility patterns of 73 glycopeptide-resistant enterococcus faecalis isolates from nine hospitals in brazil were analysed by the disk diffusion method and etests. isolates were typed by pulsed-field gel electrophoresis (pfge), and vancomycin resistance genes were detected by pcr. the isolates shared a single major pfge pattern, with six subtypes, and all were positive for vana. these results indicate the occurrence of inter-hospital dissemination of glycopeptide-resistant ... | 2004 | 15008950 |