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Molecular and Phenotypic Characteristics of Escherichia coli Isolates from Farmed Minks in Zhucheng, China
المؤلفون المشاركون
Qiu, Jianhua
Jiang, Zhiyu
Ju, Zijing
Zhao, Xiaonan
Yang, Jie
Guo, Huijun
Sun, Shuhong
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-06-27
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
In this study, the prevalence, phenotypes, and clonal relationships of Escherichia coli (E.
coli) strains isolated from minks were investigated.
In July 2017, a total of 62 fresh faecal swab samples were randomly collected from one large-scale mink farm in Zhucheng, Shandong Province, China.
In all the samples, 50 E.
coli strains were isolated and then assigned to serotyping, antimicrobial susceptibility test, detection of antimicrobial resistance genes and the Class 1 integrons, and multilocus sequence typing (MLST).
Four pathogenic serotypes were identified among all the isolates, while the most common serotype was enterohemorrhagic E.
coli O104:H4 (6.0 %).
Antimicrobial sensitivity testing revealed that most isolates were susceptible to cefoxitin (96.0 %) and amikacin (82.0 %), while most isolates were resistant to ampicillin (92.0 %) and tetracycline (90.0 %).
An analysis of the nucleotide sequences revealed that 7 isolates (14.0%) carried 4 types of Class 1 integron cassette, including dfrA27+aadA2+qnrA (57.1%), dfrA17+aadA5 (14.3%), dfrA12+aadA2 (14.3%), and dfrA1+aadA1 (14.3%).
PCR screening showed that 14 antibiotic resistance genes were presented in 50 isolates, while the most prevalent resistance gene was qnrS, which was detected in 60.0 % of isolates, followed by sul2 (40.0%) and oqxA (38.0%).
MLST analysis showed that 32 sequence types (STs) were identified, while ST46 was the predominant genotype among all isolates.
Clonal complex 3 (CC3) was dominant.
Compared with 340 human E.
coli STs reported in China, the ST10 clonal complex, known as the largest human clonal complex, was also found in the 50 mink E.
coli isolates.
Meanwhile, mink-derived strain ST206 formed a new clonal complex, CC206, which was different from human ST strains.
Our results showed that farmed minks could be reservoirs of antimicrobial-resistant E.
coli with Class 1 integron cassettes and resistance genes, which were likely to pose a threat to public health.
Therefore, continuous inspections and monitoring of E.
coli in minks are essential for detecting and controlling emerging E.
coli with different serovars as well as antibiotic resistance.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Qiu, Jianhua& Jiang, Zhiyu& Ju, Zijing& Zhao, Xiaonan& Yang, Jie& Guo, Huijun…[et al.]. 2019. Molecular and Phenotypic Characteristics of Escherichia coli Isolates from Farmed Minks in Zhucheng, China. BioMed Research International،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1124965
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Qiu, Jianhua…[et al.]. Molecular and Phenotypic Characteristics of Escherichia coli Isolates from Farmed Minks in Zhucheng, China. BioMed Research International No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1124965
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Qiu, Jianhua& Jiang, Zhiyu& Ju, Zijing& Zhao, Xiaonan& Yang, Jie& Guo, Huijun…[et al.]. Molecular and Phenotypic Characteristics of Escherichia coli Isolates from Farmed Minks in Zhucheng, China. BioMed Research International. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1124965
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1124965
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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