Distribution of putative adhesins in Shiga toxin-producing Escherichia coli (STEC) strains isolated from different sources in Chile

被引：8

作者：

Vidal, M.

Escobar, P.

Prado, V.

Hormazabal, J. C.

Vidal, R.

机构：

[1] Univ Chile, Programa Microbiol, Fac Med, Inst Ciencias Biomed, Santiago 1027, Chile

[2] Univ Chile, Fac Ciencias Quim & Farmaceut, Santiago 1027, Chile

[3] Inst Salud Publ Chile, Santiago, Chile

来源：

EPIDEMIOLOGY AND INFECTION | 2007年 / 135卷 / 04期

关键词：

D O I：

10.1017/S0950268806007102

中图分类号：

R1 [预防医学、卫生学];

学科分类号：

1004 ; 120402 ;

摘要：

The distribution of three putative adhesin genes in 123 Shiga toxin-producing (STEC) strains was determined by PCR. The STEC strains were isolated from human patients (n = 90) and food (n = 33) and were characterized by serogroup, virulence markers (eae, stx(1),, stx(2),) and adherence factors (efa1, lpfAO(157), saa) genes. Serogroups O157 (64 center dot 4%) and 026 (28 center dot 8 %) were the most frequent among human strains and the majority (60 center dot 6 %) of food strains were serologically nontypable. The adhesin genes efa 1 (90 %) and lpfA(O157) (73 center dot 3 %) were the most common in humans strains and saa (45 center dot 5 %) in food strains. The presence of these genes in addition to eae in STEC from different sources may suggest a relevant role in their pathogenesis.

引用

页码：688 / 694

页数：7

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