nosocomial infection and characterization of extended-spectrum β-lactamases-producing enterobacteriaceae in northeast brazil
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ID: 227939
2011
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Abstract
INTRODUCTION: Extended spectrum β-lactamases (ESBLs) are enzymes that degrade β-lactam antibiotics and have been reported to be an important cause of nosocomial infection in worldwide. METHODS: During 2009, 659 enterobacteria strains were isolated from different clinical specimens and tested for ESBL production. The disk approximation test, combined disk method and addition of clavulanic acid were used for phenotypic detection of the ESBL-producing strains and PCR for detection of the blaTEM and blaCTX-M genes. RESULTS: Among the isolates, 125 were ESBL producers. The blaCTX-M and blaTEM genes were detected in 90.4% and 75% of the strains, respectively. Most strains were isolated from urine. Klebsiella pneumoniae was the most prevalent organism. Microorganisms presented high resistance to the antibiotics. CONCLUSIONS: These results support the need for extending ESBL detection methods to different pathogens of the Enterobacteriaceae family because these methods are only currently standardized by the CLSI for Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca and Proteus mirabilis. Carbapenems were the antibiotic class of choice for the treatment of infections caused by ESBL-producing Enterobacteriaceae.
| Reference Key |
abreu2011revistanosocomial
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| Authors | ;Afonso Gomes Abreu;Sirlei Garcia Marques;Valério Monteiro-Neto;Roberto Morais Luz de Carvalho;Azizedite Guedes Gonçalves |
| Journal | mobile information systems |
| Year | 2011 |
| DOI |
10.1590/S0037-86822011000400008
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