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Original Article 


Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran

Ramin M.N. Fard, Mohammad M.S. Dallal, Reza Z. Moradi, Zahra Rajabi.

Abstract
Escherichia coli is an important species within the Enterobacteriaceae including at least six pathogenic classes of enterotoxigenic E. coli (ETEC), enteropathogenic E. coli (EPEC), enterohemorrhagic E. coli (EHEC), enteroaggregative E. coli (EAEC), enteroinvasive E. coli (EIEC) and diffusely adherent E. coli (DAEC). Therefore, the aims of the current study were molecular characterization of E. coli pathotypes in raw cow milk samples in Borujerd, Iran, and detection of antibiotic residues in those samples due to the importance for the public health. Totally, 150 raw cow milk samples were collected from Borujerd, Iran, 2015. Eleven genes of bfpA, eaeA, east1, flicH7, hlyA, ial, lt, st, stx1, stx2 and O157 were detected in isolates using PCR to molecularly typing the E. coli isolates. Of 150 samples, 31 E. coli strains (totally 20.6%) were isolated, including 16 ETEC (51.6%), nine EPEC (29%) and six EHEC (19.4%). No EIEC (0%) or EAEC (0%) was isolated. In PCR, 13 eaeA (29.5%), eight lt (18.18%), eight st (18.18%), four stx1 (9.09%), three stx2 (6.81%), three hlyA (6.81%), two bfpA (4.54%), two O157 (4.54%) and one flicH7 (2.27%) encoding genes were found in E. coli isolates. Furthermore, 30 samples (20%) included antibiotic residues. In General, pathotyping of the bacterial isolates can better reveal possible correlations between these pathotypes and foodborne outbreaks.

Key words: Escherichia coli, raw cow milk, pathotyping, PCR, antibiotic residue


 
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How to Cite this Article
Pubmed Style

Fard RM, Dallal MM, Moradi RZ, Rajabi Z. Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. AJVS. 2019; 60(1): 79-85. doi:10.5455/ajvs.16457

Web Style

Fard RM, Dallal MM, Moradi RZ, Rajabi Z. Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. https://www.alexjvs.com/?mno=16457 [Access: December 03, 2023]. doi:10.5455/ajvs.16457

AMA (American Medical Association) Style

Fard RM, Dallal MM, Moradi RZ, Rajabi Z. Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. AJVS. 2019; 60(1): 79-85. doi:10.5455/ajvs.16457


Vancouver/ICMJE Style

Fard RM, Dallal MM, Moradi RZ, Rajabi Z. Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. AJVS. (2019), [cited December 03, 2023]; 60(1): 79-85. doi:10.5455/ajvs.16457


Harvard Style

Fard, R. M., Dallal, . M. M., Moradi, . R. Z. & Rajabi, . Z. (2019) Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. AJVS, 60 (1), 79-85. doi:10.5455/ajvs.16457


Turabian Style

Fard, Ramin M.N., Mohammad M.S. Dallal, Reza Z. Moradi, and Zahra Rajabi. 2019. Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. Alexandria Journal of Veterinary Sciences, 60 (1), 79-85. doi:10.5455/ajvs.16457


Chicago Style

Fard, Ramin M.N., Mohammad M.S. Dallal, Reza Z. Moradi, and Zahra Rajabi. "Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran." Alexandria Journal of Veterinary Sciences 60 (2019), 79-85. doi:10.5455/ajvs.16457


MLA (The Modern Language Association) Style

Fard, Ramin M.N., Mohammad M.S. Dallal, Reza Z. Moradi, and Zahra Rajabi. "Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran." Alexandria Journal of Veterinary Sciences 60.1 (2019), 79-85. Print. doi:10.5455/ajvs.16457


APA (American Psychological Association) Style

Fard, R. M., Dallal, . M. M., Moradi, . R. Z. & Rajabi, . Z. (2019) Molecular Pathotyping of Escherichia Coli Isolates and Detection of Residual Antibiotics in Raw Cow Milk in Iran. Alexandria Journal of Veterinary Sciences, 60 (1), 79-85. doi:10.5455/ajvs.16457




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    The Alexandria Journal of Veterinary Sciences (AJVS) Official Journal of Faculty of Veterinary Medicine, Alexandria University   ISSN: 1110 ... Read more.



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