2016年中国26个省市食源性沙门菌耐药性特征分析
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(1.国家食品安全风险评估中心 卫生部食品安全风险评估重点实验室,北京 100021;2.北京农学院食品科学与工程学院,北京 102206)

作者简介:

胡豫杰 男 助理研究员 研究方向为食源性沙门菌 E-mail:huyujie@cfsa.net.cn通信作者:┣┣(中)通信作者┫┫裴晓燕 女 研究员 研究方向为食品风险监测 E-mail:peixiaoyan@cfsa.net.cn

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基金项目:

国家重点研发计划(2016YFD0401102);国家食品安全风险评估中心青年科研基金(2017005);国家食品安全风险评估中心高层次人才队伍建设523项目-食品分类人才培养项目(2017人才-3-11)


Resistance characteristic analysis for foodborne Salmonella isolates from China, 2016
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(1.Key Laboratory of Food Safety Risk Assessment of Ministry of Health,China National Center for Food Safety Risk Assessment,Beijing 100021,China;2.Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China)

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    摘要:

    目的 了解2016年中国26个省、直辖市和自治区食源性沙门菌的耐药状况。方法 采用微量肉汤稀释法测定755株食源性沙门菌对10类16种抗生素的药物敏感性,采用实时荧光定量聚合酶链式反应方法检测mcr-1基因的存在情况。结果 72.7%(549/755)的沙门菌对受试的16种抗生素呈现不同程度的耐药性,其中萘啶酸(NAL)、四环素(TET)、氨苄西林(AMP)、氨苄西林/舒巴坦(SAM)4种抗生素的耐药率较高,均在34%以上,未见碳青霉烯类[亚胺培南(IPM)、美罗培南(MEM)]耐药菌株,44.4%(335/755)的沙门菌同时耐受3类或3类以上抗生素,表现为多重耐药,同时耐受抗生素种类最高为8类。共存在134种耐药谱,优势耐药谱型为NAL、TET和AMP-SAM-NAL。全部菌株中检出2株携带mcr-1基因的菌株,分别为八重耐药的德尔卑沙门菌(Salmonella Derby)和七重耐药的鼠伤寒沙门菌(Salmonella Typhimurium)。部分省份沙门菌耐药率较高。结论 2016年中国26个省、直辖市和自治区食源性沙门菌整体耐药水平较高,多重耐药情况严重,我国食源性沙门菌中存在携带mcr-1基因的多重耐药菌株,应引起关注。

    Abstract:

    Objective To understand the antimicrobial resistance of foodborne Salmonella isolates in China in 2016. Methods Broth microdilution method were used for the antimicrobial susceptibility of 775 Salmonella isolates against 16 antimicrobial compounds which belongs to 10 categories, and real-time fluorescence quantitative polymerase chain reaction method was used to detect the existence of mcr-1 gene. Results About 72.7% (549/775) isolates showed different antimicrobial resistant levels to 16 antimicrobials tested, and the resistance rates to nalidixic acid(NAL), tetracycline(TET), ampicillin(AMP)and ampicillin-sulbactam(SAM)were as high as above 34% while all strains were susceptible to imipenem (IPM) and meropenem (MEM). About 44.4% (335/775) were identified as multi-drug resistant (MDR) strains, among which resistance to as much as eight classes of antimicrobials was unfolded. There were 134 antimicrobial resistance spectrums with NAL, TET and AMP-SAM-NAL as the top three spectrums. Two isolates were identified carrying mcr-1 gene, one was Salmonella Derby serotype with resistance to 8 classes of drugs at the same time, while another one was Salmonella Typhimurium serotype with co-resistance to 7 kinds of drugs. Serious multi-drug resistance was found in some provinces. Conclusion An overall high level antimicrobial resistance was found among foodborne Salmonella isolates in 2016, so was the MDR condition, especially for strains recovered from some provinces. Mcr-1 gene could be carried in foodborne Salmonella isolates, therefore, close attention should be paid to its surveillance and further research on the antimicrobial resistance and transportation.

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胡豫杰,刘畅,王美美,甘辛,徐进,李凤琴,杨大进,裴晓燕.2016年中国26个省市食源性沙门菌耐药性特征分析[J].中国食品卫生杂志,2018,30(5):456-461.

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  • 收稿日期:2018-07-27
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  • 在线发布日期: 2018-09-29
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