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Rev. Soc. Bras. Med. Trop ; 43(4): 462-464, jul.-ago. 2010. tab
Article in Portuguese | LILACS | ID: lil-556018

ABSTRACT

INTRODUÇÃO: O aparecimento de Pseudomonas aeruginosa e Acinetobacter sp produtores de metalo-β-lactamases (MBLs) é um desafio para os hospitais. MÉTODOS: Verificou-se a produção de MBL em cepas clínicas de Pseudomonas aeruginosa e Acinetobacter sp de um hospital de emergência de Porto Alegre pelo método de aproximação de disco e E-test MBL. Os genes bla foram pesquisados pela PCR. RESULTADOS: Duas cepas de Pseudomonas aeruginosa e oito Acinetobacter sp demonstraram fenótipo de MBLs. A amplificação do gene blaSPM-1 confirmou a enzima em P. aeruginosa.. CONCLUSÕES: Deve-se ter cautela ao avaliar testes fenotípicos utilizados na detecção rotineira de metalo-enzima.


INTRODUCTION: The appearance of metallo-β-lactamase (MBL)-producing Pseudomonas aeruginosa and Acinetobacter sp. is a challenge for hospitals. METHODS: The production of MBL in clinical isolates of Pseudomonas aeruginosa and Acinetobacter sp. From an emergency hospital in Porto Alegre was investigated using the disk approximation test and MBL E-test. The bla genes were determined using PCR. RESULTS: Two strains of Pseudomonas aeruginosa and eight of Acinetobacter sp were shown to be MBL phenotypes. Amplification of the blaSPM-1 gene confirmed the presence of the enzyme in P. aeruginosa. CONCLUSIONS: Caution is needed in evaluating phenotype tests used for routine detection of metallo-β-lactamases.


Subject(s)
Humans , Acinetobacter/enzymology , Anti-Bacterial Agents/pharmacology , Genes, Bacterial/genetics , Pseudomonas aeruginosa/enzymology , beta-Lactamases/biosynthesis , Acinetobacter/drug effects , Brazil , Microbial Sensitivity Tests , Phenotype , Polymerase Chain Reaction , Pseudomonas aeruginosa/drug effects , beta-Lactamases/genetics
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