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首页> 外文期刊>Journal of food protection >Genotypic Characterization of Non-0157 Shiga Toxin-Producing Escherichia coli in Beef Abattoirs of Argentina
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Genotypic Characterization of Non-0157 Shiga Toxin-Producing Escherichia coli in Beef Abattoirs of Argentina

机译：阿根廷牛肉屠宰场中非-0157产志贺毒素的大肠杆菌的基因型鉴定

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摘要

The non-O157 Shiga toxin-producing Escherichia coli (STEC) contamination in carcasses and feces of 811 bovines in nine beef abattoirs from Argentina was analyzed during a period of 17 months. The feces of 181 (22.3%) bovines were positive for non-O157 STEC, while 73 (9.0%) of the carcasses showed non-O157 STEC contamination. Non-0157 STEC strains isolated from feces (227) and carcasses (80) were characterized. The main serotypes identified were O178:H19, O8:H19, O130:H11, and O113:H21, all of which have produced sporadic cases of hemolytic-uremic syndrome in Argentina and worldwide. Twenty-two (7.2%) strains carried a fully virulent stxIeaelehxA genotype. Among them, strains of serotypes O103:[H2], O145:NM, and O111:NM represented 4.8% of the isolates. Xbal pulsed-field gel electrophoresis pattern analysis showed 234 different patterns, with 76 strains grouped in 30 clusters. Nine of the clusters grouped strains isolated from feces and from carcasses of the same or different bovines in a lot, while three clusters were comprised of strains distributed in more than one abattoir. Patterns AREXSX01.0157, AREXBX01.0015, and AREXPX01.0013 were identified as 100% compatible with the patterns of one strain isolated from a hemolytic-uremic syndrome case and two strains previously isolated from beef medallions, included in the Argentine PulseNet Database. In this survey, 4.8% (39 of 811) of the bovine carcasses appeared to be contaminated with non-0157 STEC strains potentially capable of producing sporadic human disease, and a lower proportion (0.25%) with strains able to produce outbreaks of severe disease.
机译：在17个月的时间内，分析了来自阿根廷的9处牛肉屠宰场中811头牛的尸体和粪便中非O157志贺毒素生产性大肠杆菌（STEC）的污染情况。非O157 STEC的牛粪中181株（占22.3％）为阳性，而屠体中73株（9.0％）的牛表现出非O157 STEC污染。从粪便（227）和屠体（80）中分离出的非0157 STEC菌株进行了表征。鉴定出的主要血清型为O178：H19，O8：H19，O130：H11和O113：H21，所有这些血清型均在阿根廷和全球范围内产生零星的溶血性尿毒症综合征病例。 22个菌株（7.2％）携带完全毒力的stxIeaelehxA基因型。其中，血清型O103：[H2]，O145：NM和O111：NM的菌株占分离株的4.8％。 Xbal脉冲场凝胶电泳图谱分析显示234种不同的图谱，其中76个菌株分为30个簇。九个类将从粪便和相同或不同牛的cas体中分离出的菌株进行了分组，而三个类则由分布在一个以上屠宰场中的菌株组成。模式AREXSX01.0157，AREXBX01.0015和AREXPX01.0013被确定为与从阿根廷溶血尿毒综合症病例中分离出的一种菌株和先前从牛肉徽章分离出的两种菌株（包括在阿根廷PulseNet数据库中）的模式100％兼容。在这项调查中，有4.8％（811例中的39例）的牛appeared体被非0157 STEC菌株污染，这些菌株可能会导致散发性人类疾病，而比例较低（0.25％）的菌株可以引起严重疾病的爆发。 。

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  • 来源
    《Journal of food protection》 |2011年第12期|p.2008-2017|共10页
  • 作者

    M. O. MASANA; B. A. DASTEK; P. M. PALLADINO; L. GALLI; L. L. DEL CASTILLO; C. CARBONARI; G. A. LEOTTA; E. VILACOBA; K. IRINO; M. RIVAS;

  • 作者单位

    Instituto Tecnologia de Alimentos, Centro de Investigation de Agroindustria, Instituto National de Tecnologia Agropecuaria-INTA, CC. 77, B1708WAB Moron, Provincia de Buenos Aires, Argentina;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina;

    Instituto Tecnologia de Alimentos, Centro de Investigation de Agroindustria, Instituto National de Tecnologia Agropecuaria-INTA, CC. 77, B1708WAB Moron, Provincia de Buenos Aires, Argentina;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina,Consejo National de Investigaciones Cientificas y Tecnicas-CONICET, Av. Rivadavia 1917 C1033AAJ, Buenos Aires, Argentina;

    Instituto Tecnologia de Alimentos, Centro de Investigation de Agroindustria, Instituto National de Tecnologia Agropecuaria-INTA, CC. 77, B1708WAB Moron, Provincia de Buenos Aires, Argentina;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina,Consejo National de Investigaciones Cientificas y Tecnicas-CONICET, Av. Rivadavia 1917 C1033AAJ, Buenos Aires, Argentina;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina;

    Segdo de Bacteriologia, Instituto Adolfo Lutz, Av. Doutor Arnaldo 355, Sao Paulo 01246-902, Brazil;

    Servicio Fisiopatogenia, Instituto National de Enfermedades Infecciosas-ANLIS ' 'Dr. Carlos G. Malbrdn," Av. Velez Sarsfield 563 (1281) Buenos Aires, Argentina;

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