数字农科院2.0

Antimicrobial resistance profiling and molecular typing of ruminant-borne isolates of Clostridium perfringens from Xinjiang, China

文献类型： 外文期刊

作者： Wang Xiaoting;Ning Chengcheng;Ji Chunhui;Li Yan;Li Jing;Meng Qingling;Qiao Jun;Wang Lixia;Cai Kuojun;Zhang Jinsheng;Zhang Zaichao;Yu Weiwei;Peng Yelong;Cai Xuepeng

作者机构：

关键词： Antimicrobial resistance profiles;Clostridium perfringens;Molecular typing;Ruminant-borne isolates

期刊名称： Journal of Global Antimicrobial Resistance

ISSN： 2213-7165

年卷期： 2021 年 27.0 卷

页码：

收录情况： JCR（2021版）

摘要： Objectives: Clostridium perfringens (C. perfringens) can cause intestinal diseases in livestock and humans, which seriously threatens the healthy development of animal husbandry and human food safety. Here, the characteristics of antimicrobial resistance and molecular typing of ruminant-borne strains of C. perfringens in Xinjiang, China were explored and profiled. Methods: A total of 307 clinical feces collected from ruminants (cattle and sheep) with diarrheal symptoms were screened for C. perfringens. The recovered isolates were characterized in respect to their antimicrobial resistance pattern and molecular typing. Results: A total of 109 isolates of C. perfringens were isolated from 307 clinical feces of ruminants, most of which displayed the multidrug resistance (MDR) phenotype. Demonstration of the quinolone-resistance gene was the highest among the isolates (70.6%). The multiplex PCR typing based on toxin genes showed that type A and type D strains made up 82.6% (90/109) and 17.4% (19/109), among which, the isolates carrying β2 gene occupied 43.3% (39/90) of type A strains and 31.6% (6/19) of type D strains. These isolates were divided into 6 genotypes (I-VI) by enterobacterial repetitive intergenic consensus sequence-based PCR (ERIC-PCR) method. A total of 33 ST types (ST1-ST33) were identified by multilocus sequence typing (MLST) method. Conclusion: C. perfringens isolates with multidrug resistance (MDR) were frequent and circulating in ruminants. Among them, type A-Ⅰ-ST19 was the dominant genotype of C. perfringens, displaying obvious genetic diversity. This study provided important epidemiological data for the risk assessment of food safety associated with ruminant-borne C. perfringens in Xinjiang, China.

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