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首页> 外文期刊>Food microbiology >Staphylococcus argenteus isolated from retail foods in China: Incidence, antibiotic resistance, biofilm formation and toxin gene profile
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Staphylococcus argenteus isolated from retail foods in China: Incidence, antibiotic resistance, biofilm formation and toxin gene profile

机译：从零售食物中分离的葡萄球菌argenteus在中国：发病率，抗生素，生物膜形成和毒素基因谱

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摘要

Staphylococcus argenteus is a novel species of coagulase-positive staphylococci which was separated from Staphylococcus aureus in 2014. It can threaten human health like S. aureus but can not identify with conventional biochemical or other phenotypic testing. From 2011 to 2016, 1581 S. aureus strains were isolated from 4300 samples from retail foods covering most provincial capitals in China. According to multilocus sequence typing (MLST) and PCR confirmation, 7.2% of isolates (114/1581) were confirmed as S. argenteus. The pathogen was distributed in 22 of 39 sampled cities and all food types. Interestingly, most S. argenteus positive samples were collected from coastal cities in South China. MLST detected 8 different sequence types (STs), including five new STs. CC2250 was the predominant lineage of S. argenteus, followed by CC1223. To further characterize the isolates, their antibiotic resistance, virulence genes, biofilm formation and biofilm-related genes were examined. The pvl gene was not detected in S. argenteus, and only 1 isolate (0.9%) was positive for the tsst-1 gene. For 18 enterotoxin genes, 16.7% (19/114) of isolates harboured more than three genes, whereas 70.2% (80/114) of isolates had none of the investigated genes. Penicillin and ampicillin were the major antibiotics to which the S. argenteus isolates were resistant, followed by tetracycline, kanamycin and fusidic acid. A total of 94.7% of isolates had the ability to produce biofilms and all isolates harboured icaA, fnbA, and fib genes. Other biofilm-related genes, such as eno, clfB,fnbB, and icaC, were also found in 99.1%, 92.1%, 88.6%, and 74.6% of isolates, respectively. This study is the first systematic investigation of the prevalence of S. argenteus in retail foods in China and shows their ubiquity in food. We also provide comprehensive surveillance of the incidence of S. argenteus in retail foods and information to enable more accurate and effective treatment of infections of this new species.
机译：葡萄球菌阿根廷是一种新型的凝固酶阳性葡萄球菌，2014年与金黄色葡萄球菌分离。它可以威胁人类水肿等人类健康，但不能鉴定常规的生化或其他表型测试。从2011年到2016年，来自零售食品的4300个样本中占据了中国大多数省级资本的4300个样本。根据多点序列键入（MLST）和PCR确认，7.2％的分离株（114/1581）被证实为Argenteus。病原体分布在39个采样城市的22个和所有食品类型中。有趣的是，大多数S. Argenteus阳性样本被从南方沿海城市收集。 MLST检测到8种不同的序列类型（STS），包括五种新的STS。 CC2250是S. Argenteus的主要谱系，其次是CC1223。为了进一步表征分离物，检查它们的抗生素抗性，毒力基因，生物膜形成和生物膜相关基因。在S. Argenteus中未检测到PVL基因，并且仅为1个分离物（0.9％）对于TSST-1基因阳性。对于18个肠毒素基因，16.7％（19/114）的分离物患有超过三种基因，而70.2％（80/114）分离物没有研究。青霉素和氨苄西林是S.Agenteus分离株抗性的主要抗生素，其次是四环素，卡那霉素和杂草。共有94.7％的分离物具有生产生物膜的能力，并且所有分离物患者患有患者，FNBA和FIB基因。其他生物膜相关基因，例如eno，ClFB，FnBB和ICAC，也分别发现99.1％，92.1％，88.6％和74.6％的分离物。本研究是第一次系统调查中国零售食品中S. Argenteus的患病率，并在食物中展示了他们的无处不在。我们还提供全面监测零售食品和信息的S. Argenteus的发病率，以便能够更准确和有效地治疗这种新物种的感染。

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  • 来源
    《Food microbiology》 |2020年第10期|103531.1-103531.10|共10页
  • 作者

    Shi Wu; Jiahui Huang; Feng Zhang; Jingsha Dai; Rui Pang; Jumei Zhang; Haiyan Zeng; Qihui Gu; Shuhong Zhang; Youxiong Zhang; Liang Xue; Juan Wang; Yu Ding; Qingping Wu;

  • 作者单位

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China School of Bioscience and Bioengineering South China University of Technology Guangzhou 510006 PR China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

    College of Pood Science South China Agricultural University Guangzhou 510642 China;

    Department of Food Science & Technology Jinan University Guangzhou 510632 China;

    Guangdong Institute of Microbiology Guangdong Academy of Sciences State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Safety and Health Guangdong Open Laboratory of Applied Microbiology 510070 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    S. argenteus; S. aureus; Retail food; Genetic background; Biofilm formation;

    机译：S. Argenteus;S.金黄色葡萄球菌;零售食品;遗传背景;生物膜形成;

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