Serogroups, subtypes and virulence factors of shiga toxin-producing Escherichia coli isolated from human, calves and goats in Kerman, Iran

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TAGHADOSI ROHOLLAH; SHAKIBAIE MOHAMMAD REZA; ALIZADE HESAM; HOSSEINI NAVE HOSSEIN; ASKARI ASMA; GHANBARPOUR REZA

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Journal: Gastroenterology and Hepatology From Bed to Bench Year:2018 | Volume:11 | Issue:1 Page(s): 60-67

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Title

Serogroups, subtypes and virulence factors of shiga toxin-producing Escherichia coli isolated from human, calves and goats in Kerman, Iran

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Keywords

Shiga toxin-producing E.coli

serogroup

virulence factors

Abstract

Aim: The present study was conducted to detect the occurrence, serogroups, virulence genes and phylogenetic relationship of shiga toxin-producing Escherichia coli (STEC) in human, clave and goat in Kerman (southeast of Iran). Background: STEC have emerged as the important foodborne zoonotic pathogens causing human gastrointestinal disease and confirming the risk to public health. Methods: A total of 671 fecal samples were collected from diarrheic patients (n=395) and healthy calves (n=156) and goats (n=120) and screened for the presence of stx gene. Furthermore, the prevalence of stx1 and stx2 variants, serotypes (O157, O145, O103, O26, O111, O91, O128, and O45), phylogenetic groups and the presence of ehxA, eae, hylA, iha and saa virulence genes were studied. Results: Prevalence of STEC in human diarrheic isolates was 1. 3% (5 isolates), in claves was 26. 3% (41 isolates) and in goats was 27. 5% (33 isolates). stx1 gene was the most prevalent variant and detected in 75 isolates. Furthermore, stx1c was the most predominant stx subtype, found in 56 isolates. The ehxA identified in 36 (45. 6%) isolates, followed by iha 5 (6. 3%), eaeA 4 (5. 1%), hlyA 2 (2. 5%) and saa 2 (2. 5%). Most of the isolates belonged to phylogroup B1. Only two O26 and one O91 isolates were detected in our study. Conclusion: Our results show that STEC strains were widespread among healthy domestic animals in the southeast of Iran

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APA: Copy

TAGHADOSI, ROHOLLAH, SHAKIBAIE, MOHAMMAD REZA, HOSSEINI NAVE, HOSSEIN, ASKARI, ASMA, & GHANBARPOUR, REZA. (2018). Serogroups, subtypes and virulence factors of shiga toxin-producing Escherichia coli isolated from human, calves and goats in Kerman, Iran. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH, 11(1), 60-67. SID. https://sid.ir/paper/324756/en

Vancouver: Copy

TAGHADOSI ROHOLLAH, SHAKIBAIE MOHAMMAD REZA, HOSSEINI NAVE HOSSEIN, ASKARI ASMA, GHANBARPOUR REZA. Serogroups, subtypes and virulence factors of shiga toxin-producing Escherichia coli isolated from human, calves and goats in Kerman, Iran. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH[Internet]. 2018;11(1):60-67. Available from: https://sid.ir/paper/324756/en

IEEE: Copy

ROHOLLAH TAGHADOSI, MOHAMMAD REZA SHAKIBAIE, HOSSEIN HOSSEINI NAVE, ASMA ASKARI, and REZA GHANBARPOUR, “Serogroups, subtypes and virulence factors of shiga toxin-producing Escherichia coli isolated from human, calves and goats in Kerman, Iran,” GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH, vol. 11, no. 1, pp. 60–67, 2018, [Online]. Available: https://sid.ir/paper/324756/en

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