畜牧兽医学报 ›› 2025, Vol. 56 ›› Issue (5): 2372-2382.doi: 10.11843/j.issn.0366-6964.2025.05.034

• 基础兽医 • 上一篇    下一篇

赛鸽源大肠杆菌耐药性检测及多重耐药菌株的全基因组测序分析

石金川1(), 孙淼1, 孟令浩1, 王永强4, 耿超1, 齐朝鲁蒙5, 陈亨利6, 王梓1,2,3,*(), 刘锴1,2,3,*()   

  1. 1. 内蒙古民族大学动物科技学院, 通辽 028000
    2. 内蒙古自治区肉牛疾病防控工程技术研究中心, 通辽 028000
    3. 内蒙古自治区肉牛产业学院, 通辽 028000
    4. 扎兰屯职业学院, 呼伦贝尔 162650
    5. 内蒙古民族大学医学院, 通辽 028000
    6. 通辽市农牧业发展中心, 通辽 028000
  • 收稿日期:2024-07-05 出版日期:2025-05-01 发布日期:2025-05-27
  • 通讯作者: 王梓,刘锴 E-mail:571444290@qq.com;liukai721026@163.com;wangzi@imun.edu.cn
  • 作者简介:石金川(2000-),男,蒙古族,内蒙古通辽人,硕士生,主要从事兽医微生物学及兽医免疫学研究,E-mail: 571444290@qq.com
  • 基金资助:
    内蒙古自治区中央引导地方发展基金项目(2022ZY0149);内蒙古锡林郭勒盟科技计划项目(202213);内蒙古自治区高校基本科研业务费项目(GXKY22082;GXKY22097)

Detection of Antibiotic Resistance in Escherichia coli Strains Sourced from Racing Pigeons and Whole-genome Sequencing Analysis of Multidrug-resistant Strains

SHI Jinchuan1(), SUN Miao1, MENG Linghao1, WANG Yongqiang4, GENG Chao1, QI Chaolumeng5, CHEN Hengli6, WANG Zi1,2,3,*(), LIU Kai1,2,3,*()   

  1. 1. School of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao 028000, China
    2. Inner Mongolia Autonomous Region Beef Cattle Disease Prevention and Control Engineering Technology Research Center, Tongliao 028000, China
    3. Beef Cattle Industry School of Inner Mongolia Autonomous Region, Tongliao 028000, China
    4. Zhalantun Vocational College, Hulun Buir 162650, China
    5. Medical school, Inner Mongolia University for Nationalities, Tongliao 028000, China
    6. Tongliao Agriculture and Animal Husbandry Development Center, Tongliao 028000, China
  • Received:2024-07-05 Online:2025-05-01 Published:2025-05-27
  • Contact: WANG Zi, LIU Kai E-mail:571444290@qq.com;liukai721026@163.com;wangzi@imun.edu.cn

摘要:

赛鸽养殖中,普遍存在抗生素滥用现象,造成耐药菌株增加,多重耐药性加剧。本研究旨在了解通辽市赛鸽源大肠杆菌耐药性及耐药基因流行情况,为赛鸽源大肠杆菌病临床治疗提供参考。使用大肠杆菌鉴别培养基,16S rRNA测序等方法对通辽地区送检腹泻赛鸽粪便病原菌进行分离纯化。通过药敏试验及耐药基因的PCR检测了解分离菌株的耐药性及耐药基因分布情况。对两株耐药性较强的大肠杆菌进行全基因组测序分析。结果显示:分离得到8株赛鸽源大肠杆菌,均为多重耐药菌株,其中卡那霉素和链霉素耐药率均为100%,全部菌株对头孢哌酮/舒巴坦敏感。E-ge1,E-ge2耐药性严重,对两株菌进行全基因组测序分析,获得完整基因组序列,两株菌基因组长度分别为4 680 817 bp与4 691 799 bp,分别编码4 888与5 070个基因,两菌株均携带3个质粒。E-ge1共携带81个耐药基因,E-ge2携带74个耐药基因。通辽地区赛鸽源大肠杆菌耐药形势严峻,菌株携带大量耐药基因,应优化用药策略,控制耐药性的加剧和耐药基因的传播。

关键词: 赛鸽, 大肠杆菌, 耐药性, 耐药基因, 全基因组测序

Abstract:

There is widespread misuse of antibiotics in pigeon breeding, leading to an increase in antibiotic-resistant strains and exacerbating multidrug resistance. The present study aimed to understand the prevalence of antibiotic resistance and resistance genes in Escherichia coli sourced from racing pigeons in Tongliao City, and to provide reference information for clinical treatment of E. coli infections in racing pigeons. Using E. coli selective culture media and methods such as 16S rRNA sequencing, pathogenic bacteria from diarrheic racing pigeons in Tongliao were isolated and purified. Drug susceptibility testing and PCR detection of resistance genes were conducted to assess the resistance profiles and distribution of resistance genes in the isolated strains. Whole genome sequencing analysis was performed on two highly resistant E. coli strains. Eight strains of E.coli sourced from racing pigeons were isolated, and all of them exhibiting multidrug resistance. The resistance rates to kanamycin and streptomycin were both 100%, while all strains were sensitive to ceftriaxone-sulbactam. Strains E-ge1 and E-ge2 showed severe resistance profiles. Whole genome sequencing analysis of these two strains revealed complete genome sequences, with lengths of 4 680 817 bp and 4 691 799 bp respectively. They encoded 4 888 and 5 070 genes respectively, and both strains carried three plasmids.E-ge1 carries a total of 81 antibiotic resistance genes, whereas E-ge2 harbors 74 such genes. The situation of antibiotic resistance in E.coli sourced from racing pigeons in Tongliao is severe, with strains carrying a large number of resistance genes. It is imperative to optimize treatment strategies to control the exacerbation of resistance and the spread of resistance genes.

Key words: racing pigeons, Escherichia coli, antibiotic resistance, resistance genes, whole-genome sequencing

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