Prevalence of stx1, stx2, and eaeA genes in Shiga toxin-producing Escherichia coli isolated from fish and shrimp in Bushehr, Iran

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Behshood Parisa; Tajbakhsh Elahe; Nourbakhsh Fahimeh

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Journal Paper

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Journal: Journal of Zoonosis Year:2022 | Volume:2 | Issue:1 Page(s): 1-9

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Information Journal Paper

Title

Prevalence of stx1, stx2, and eaeA genes in Shiga toxin-producing Escherichia coli isolated from fish and shrimp in Bushehr, Iran

Author(s)

Behshood Parisa | Tajbakhsh Elahe | Nourbakhsh Fahimeh | Issue Writer Certificate

Keywords

Escherichia coli

Shiga toxin

sea products

stx1

stx2 and eaeA genes

Abstract

Shiga toxin-producing Escherichia coli is an important pathogen in food-borne diseases, and several foodborne epidemics around the world have been linked to this bacterium. Contamination with this organism causes watery and bloody diarrhea. In this study, 400 fish and shrimp samples were prepared in Bushehr province, and the presence of Escherichia coli was confirmed by conducting microbiological and molecular tests, and the abundance of stx1, stx2 and eaeA genes was investigated in the presence of a pair of specific primers. Escherichia coli was not isolated in the packaged samples, but in non-packaged samples, out of 200 fish samples, Escherichia coli was isolated in 35 samples (17. 5%) and out of 50 shrimp samples in 10 samples (20%) of Escherichia coli were isolated. After performing the multiplex PCR test in the presence of specific primers, stx1, stx2 and eaeA genes were not found alone banned in any of the strains isolated from fish. In two isolates (20%), the band related to stx1 and eaeA genes and in one isolate (10%) the band related to stx1, stx2 and eaeA genes were observed, while in Escherichia coli strains isolated from shrimp, only in one sample (33. 33%) stx1 gene was observed. In this research, it was found that the frequency of stx1 gene is higher than stx2 gene. In this way, it can be stated that the genetic pattern is stx1dominant.

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APA: Copy

Behshood, Parisa, Tajbakhsh, Elahe, & Nourbakhsh, Fahimeh. (2022). Prevalence of stx1, stx2, and eaeA genes in Shiga toxin-producing Escherichia coli isolated from fish and shrimp in Bushehr, Iran. ZOONOSIS, 2(1 ), 1-9. SID. https://sid.ir/paper/1066425/en

Vancouver: Copy

Behshood Parisa, Tajbakhsh Elahe, Nourbakhsh Fahimeh. Prevalence of stx1, stx2, and eaeA genes in Shiga toxin-producing Escherichia coli isolated from fish and shrimp in Bushehr, Iran. ZOONOSIS[Internet]. 2022;2(1 ):1-9. Available from: https://sid.ir/paper/1066425/en

IEEE: Copy

Parisa Behshood, Elahe Tajbakhsh, and Fahimeh Nourbakhsh, “Prevalence of stx1, stx2, and eaeA genes in Shiga toxin-producing Escherichia coli isolated from fish and shrimp in Bushehr, Iran,” ZOONOSIS, vol. 2, no. 1 , pp. 1–9, 2022, [Online]. Available: https://sid.ir/paper/1066425/en

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