SciELO - Scientific Electronic Library Online

 
vol.33 issue11Effect of fatty acids on leukocyte functionEvidence for the expression of native Mycobacterium tuberculosis phospholipase C: recognition by immune sera and detection of promoter activity author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Journal of Medical and Biological Research

On-line version ISSN 1414-431X

Abstract

BEDENDO, J.  and  PIGNATARI, A.C.C.. Typing of Enterococcus faecium by polymerase chain reaction and pulsed field gel electrophoresis. Braz J Med Biol Res [online]. 2000, vol.33, n.11, pp. 1269-1274. ISSN 1414-431X.  http://dx.doi.org/10.1590/S0100-879X2000001100002.

Polymerase chain reaction (PCR) with JB1 or REP consensus oligonucleotides and pulsed field gel electrophoresis (PFGE) were used to study genomic DNA extracted from 31 strains of enterococci. Eleven ATCC strains, representative of 11 species of Enterococcus, were initially tested by JB1-PCR, revealing that Enterococcus malodoratus and Enterococcus hirae presented identical banding patterns. Eight Enterococcus faecium isolates from Stanford University and 12 from São Paulo Hospital were studied by JB1-PCR, REP-PCR 1/2R and PFGE. Among the isolates from Stanford University, 5 genotypes were defined by JB1-PCR, 7 by REP-PCR 1/2R and 4 by PFGE. Among the isolates from São Paulo Hospital, 9 genotypes were identified by JB1-PCR, 6 by REP-PCR and 5 by PFGE. The three methods identified identical genotypes, but there was not complete agreement among them.

Keywords : molecular typing; Enterococcus faecium; PCR-PFGE.

        · text in English     · pdf in English