Similar Antimicrobial Resistance of Escherichia coli Strains Isolated from Retail Chickens and Poultry Farms
文献类型: 外文期刊
作者: Tang, Biao 1 ; Ma, Yan 2 ; He, Xiangxiang 1 ; Zhou, Qinyi 4 ; Chang, Jiang 1 ; Qian, Mingrong 1 ; Xia, Xiaodong 2 ; Yang, 1 ;
作者机构: 1.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Zhejiang, Peoples R China
2.Northwest Agr & Forestry Univ, Coll Food Sci & Engn, Yangling, Shaanxi, Peoples R China
3.Shanghai Jiao Tong Univ, MOST USDA Joint Res Ctr Food Safety, Sch Agr & Biol, State Key Lab Microbial Metab, Shanghai, Peoples R China
4.Nanjing Agr Univ, Coll Vet Med, Nanjing, Peoples R China
关键词: Escherichia coli; antimicrobial resistance; genome sequences; multilocus sequence typing
期刊名称:FOODBORNE PATHOGENS AND DISEASE ( 2020影响因子:3.171; 五年影响因子:3.235 )
ISSN: 1535-3141
年卷期: 2021 年 18 卷 7 期
收录情况: SCI
摘要: Antimicrobial resistance (AMR) is a major public health challenge and spreads through humans, animals, and the environment. Many reports show that AMR genes (ARGs) or phenotypes can be transferred from food animals to humans. However, the level and correlation of AMR in different nodes of the poultry meat supply chain are still poorly understood. Herein, 225 Escherichia coli isolates were recovered from chilled chicken samples from markets (123) and chicken fecal samples from farms (102) in Zhejiang Province, China. The dominant sequence types (STs) were ST155 (8.89%), ST48 (7.56%), and ST10 (7.11%), which are common in chicken and fecal samples. Antimicrobial susceptibility testing (AST) analysis showed that the E. coli isolates from fecal samples and retail chickens were resistant to ampicillin (61.77% and 63.42%, respectively) and trimethoprim (56.87% and 52.85%). Moreover, 36.59% of the E. coli isolates from chilled chickens and 39.22% of the isolates from fecal samples were resistant to three or more antimicrobial agents. A total of 59 ARGs were identified in sequenced E. coli genomes, including the mcr-1 gene involved in colistin resistance. The E. coli from farms and markets could be clustered in the same branch according to core single nucleotide polymorphisms. In addition, toxin genes astA and hlyE were also predicted in 86.5% (32/37) and 13.5% (5/37) of the above genomes, respectively. Taken together, these findings demonstrated that E. coli isolates from markets and farms showed similar AMR patterns, suggesting that E. coli strains in markets may originate from farms.
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