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Science in One Health 2024年第1期3卷 134-139页

作者： Lei Lei Panfeng Xiong Zelin Yan Yanyan Zhang Yuchen Wu Gongxiang Chen Houhui Song Rong Zhang Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province Zhejiang Provincial Engineering Laboratory for Animal Health Inspection&Internet TechnologyZhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health ManagementChina-Australia Joint Laboratory for Animal Health Big Data AnalyticsCollege of Animal Science and Technology&College of Veterinary MedicineZhejiang Agriculture and Forestry UniversityHangzhouZhejiang 311300China Department of Clinical Laboratory The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang 310009China

Background:Over the past few decades,antimicrobial resistance(AMR)has emerged as a global health challenge in human and veterinary *** on AMR genes in captive wild animals has ***,the presence and molecular characteristics of tet(X)-carrying bacteria in these animals remain ***:Eighty-four samples were collected from captive wild ***(X)variants were detected using polymerase chain reaction and the isolates were identified using matrix-assisted laser desorption/ionization time-of-flight mass *** isolated strains were subjected to antimicrobial susceptibility testing and wholegenome *** virulence of an Escherichia coli strain carrying enterotoxin genes was assessed using a Galleria mellonella larval ***:We isolated two tet(X4)-positive *** strains and one tet(X4)-positive Raoultella ornithinolytica *** susceptibility tests revealed that all three tet(X4)-carrying bacteria were sensitive to the 13 tested antimicrobial agents,but exhibited resistance to ***,one tet(X4)-carrying *** strain producing an enterotoxin had a toxic effect on *** ***-genome sequencing analysis showed that the two tet(X4)-carrying *** strains had more than 95%similarity to tet(X4)-containing *** strains isolated from pigs and humans in ***:The genetic environment of tet(X4)closely resembled that of the plasmid described in previous *** study identified tet(X4)-positive strains in wildlife and provided valuable epidemiological data for monitoring drug *** identification of enterotoxin-producing *** strains also highlights the potential risks posed by virulence genes.

关键词： Wild animal tet(X4) enterobacterales Enterotoxin Tigecycline resistance Epidemiology

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