First report of CTX-M producing Escherichia coli, including the new ST2526, isolated from beef cattle and sheep in Portugal

被引：10
作者：
Ramos, Sonia [1 ,2 ,3 ,4 ]
Igrejas, Gilberto [3 ,4 ]
Silva, Nuno [2 ]
Jones-Dias, Daniela [5 ]
Capelo-Martinez, Jose-Luis [6 ,7 ]
Canica, Manuela [5 ]
Poeta, Patricia [1 ,2 ]
机构：
[1] Univ Tras Os Montes & Alto Douro, Dept Vet Sci, Quinta De Prados, Vila Real, Portugal
[2] Univ Tras Os Montes & Alto Douro, Ctr Studies Anim & Vet Sci, Quinta De Prados, Vila Real, Portugal
[3] Univ Tras Os Montes & Alto Douro, Ctr Genom & Biotechnol, Inst Biotechnol & Bioengn, Quinta De Prados, Vila Real, Portugal
[4] Univ Tras Os Montes & Alto Douro, Dept Genet & Biotechnol, Quinta De Prados, Vila Real, Portugal
[5] Natl Inst Hlth Dr Ricardo Jorge, Antibiot Resistance Unit, Dept Infect Dis, P-1649016 Lisbon, Portugal
[6] Univ Nova Lisboa, REQUIMTE, Dept Chem, Sci & Technol Fac,FCT, Caparica, Portugal
[7] Univ Vigo, BIOSCOPE Grp, Dept Phys Chem, Fac Sci, Orense, Spain
来源：
FOOD CONTROL | 2013年 / 31卷 / 01期
关键词：
Extended-spectrum-beta-lactamase; CTX-M-type; Sheep; Beef cattle; Sequence typing; SPECTRUM BETA-LACTAMASES; EXTENDED-SPECTRUM; RESISTANCE; ENTEROBACTERIACEAE; STRAINS; MEAT;
D O I：
10.1016/j.foodcont.2012.10.011
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
The prevalence of extended-spectrum beta-lactamase-containing Escherichia coli isolates was studied in beef cattle and sheep at slaughter in Portugal. CTX-M-producing E. coli isolates were detected in 7% of the 127 fecal samples. The beta-lactamase genes detected were as following: CTX-M-32 (n = 4), TEM-1 + CTX-M-1 (n = 3) and CTX-M-1 (n = 2). All CTX-M-containing isolates exhibit a multiresistant phenotype. MLST analysis revealed four different STs under 2 ST complexes (STC10 and STC155) and we detected a novel allelic profile representing a new ST, registered in the database as ST2526. Five of the CTX-M-containing isolates were classified in the B1 phylogroup and 4 isolates in the A phylogroup. Eight isolates harbored at least one of the virulence factors studied. Detection of CTX-M-producers E. coli in beef cattle and sheep raises important questions as they can represent a potential risk factor to public health. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：208 / 210
页数：3
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