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

页码：208 / 210

页数：3

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