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J Vet Med Sci. 2018 Mar 30;80(3):510-517. doi: 10.1292/jvms.17-0708. Epub 2018 Feb 12.
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The occurrence of CTX-M-25-producing Enterobacteriaceae in day-old broiler chicks in Japan.日本一日龄肉鸡雏鸡中产CTX-M-25肠杆菌科细菌的出现情况。
J Vet Med Sci. 2017 Oct 7;79(10):1644-1647. doi: 10.1292/jvms.17-0294. Epub 2017 Aug 7.
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Molecular characterisation of extended-spectrum β-lactamase- and plasmid AmpC-producing Escherichia coli strains isolated from broilers in Béjaïa, Algeria.从阿尔及利亚贝贾亚的肉鸡中分离出的产超广谱β-内酰胺酶和质粒 AmpC 的大肠杆菌菌株的分子特征。
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从肉种鸡生殖器官和孵化蛋内部内容物中分离携带bla和qnrS1基因的大肠杆菌。

Isolation of Escherichia coli carrying the bla and qnrS1 genes from reproductive organs of broiler breeders and internal contents of hatching eggs.

作者信息

Benameur Qada, Tali-Maamar Hassiba, Assaous Farida, Guettou Badia, Tahrat Naϊma, Aggoune Nadjet, Rahal Kheira, Ben-Mahdi Meriem-Hind

机构信息

Faculté des Sciences de la Nature et de la vie, Université Abdelhamid Ibn Badis, Mostaganem 27000, Algeria.

Laboratoire de Recherche, Santé et Productions Animales, Ecole Nationale Supérieure Vétérinaire, Algiers 16000, Algeria.

出版信息

J Vet Med Sci. 2018 Nov 1;80(10):1540-1543. doi: 10.1292/jvms.18-0283. Epub 2018 Sep 3.

DOI:10.1292/jvms.18-0283
PMID:30175752
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6207526/
Abstract

This study aimed to characterize two third-generation cephalosporins- and quinolone-resistant Escherichia coli (TGCs- and Q-R-Ec) isolates recovered from the ovaries of a broiler breeder flock and the internal contents of hatching eggs produced by the broiler breeder flock. Clonal relatedness was determined by multilocus sequence typing (MLST). The isolates displayed the same multidrug resistance profile, with resistance to ampicillin, ticarcillin, piperacillin, cefazollin, cephalothin, cefotaxime, nalidixic acid, tetracycline and sulfonamides. Double disk synergy test demonstrated that the two isolates presented an ESBL phenotype. PCR and sequencing results showed that both the isolates harbored the bla and qnrS1 genes. MLST revealed a novel allele combination, designated as ST461, in these isolates. This study would contribute to the molecular epidemiological understanding of TGCs- and/or Q-R-Ec.

摘要

本研究旨在对从一个肉种鸡群的卵巢以及该肉种鸡群所产种蛋的内部内容物中分离出的两种耐第三代头孢菌素和喹诺酮的大肠杆菌（TGCs-和Q-R-Ec）菌株进行特征分析。通过多位点序列分型（MLST）确定克隆相关性。这些分离株表现出相同的多重耐药谱，对氨苄西林、替卡西林、哌拉西林、头孢唑林、头孢噻吩、头孢噻肟、萘啶酸、四环素和磺胺类药物耐药。双纸片协同试验表明这两种分离株呈现超广谱β-内酰胺酶（ESBL）表型。聚合酶链反应（PCR）和测序结果显示，这两种分离株均携带bla和qnrS1基因。MLST分析表明，这些分离株中存在一种新的等位基因组合，命名为ST461。本研究将有助于对TGCs-和/或Q-R-Ec进行分子流行病学了解。