Molecular characteristics of extended-spectrum β-lactamase-producing Escherichia coli from Rio de Janeiro, Brazil

被引：53
作者：
Peirano, G. [1 ,2 ]
Asensi, M. D. [3 ]
Pitondo-Silva, A. [4 ]
Pitout, J. D. D. [1 ,2 ]
机构：
[1] Calgary Lab Serv, Div Microbiol, Calgary, AB T2L 2K8, Canada
[2] Univ Calgary, Dept Pathol & Lab Med, Calgary, AB, Canada
[3] Inst Oswaldo Cruz, Lab Pesquisas Infeccao Hosp, BR-20001 Rio De Janeiro, Brazil
[4] Univ Sao Paulo, Dept Anal Clin Toxicol & Bromatol, Fac Ciencias Farmaceut Ribeirao Preto, BR-14049 Ribeirao Preto, SP, Brazil
来源：
CLINICAL MICROBIOLOGY AND INFECTION | 2011年 / 17卷 / 07期
关键词：
Brazil; CTX-M-15; Escherichia coli; phylogroup A; ST410; CALGARY HEALTH REGION; ENTEROBACTERIACEAE; EMERGENCE; EPIDEMIOLOGY; CLONE;
D O I：
10.1111/j.1469-0691.2010.03440.x
中图分类号：
R51 [传染病];
学科分类号：
100401 ;
摘要：
Twenty-five extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli clinical isolates from Rio de Janeiro, Brazil were characterized by isoelectric focusing, PCR and sequencing of bla(ESBL) genes, plasmid-mediated quinolone resistance determinants, phylogenetic groups, replicon typing, pulsed-field electrophoresis, and multilocus sequencing typing. Twenty-three (92%) ESBL-producing E. coli isolates were positive for bla(CTX-M) genes, aac(6')-lb-cr, and qnrB. Genetic relatedness of ESBL producers clustered seven (28%) CTX-M-15-producing isolates as sequence type (ST) 410, clonal complex (CC) 23, and two (8%) as clone O25-ST131. Our results illustrate the predominance of phylo-group A (52%), ST410 (CC 23) and CTX-M-15 among ESBL-producing E. coli isolates from hospitals in Rio de Janeiro.
引用
收藏
页码：1039 / 1043
页数：6
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