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62157

Molecular characterization of Eschericha coli isolated from raw milk samples with emphasis on their antibiotic resistance and virulence markers

Article

Last updated: 24 Dec 2024

Subjects

-

Tags

Bacteriology, Immunology and Mycology

Abstract

In the present study (10) E.coli strains previously isolated from (450) raw milk samples of different sources were analyzed for the determination of their antibiogram and screened for the presence of alkaline phosphatase gene (phoA)  and virulence markers for Shiga toxin producing E.coli (STEC); stx1, stx2, and  the occurrence of antibiotic resistance genes; nonspecific TEM β-Lactamase (blaTEM),Tetracycline A (tetA), which were investigated by Polymerase chain reaction. Ten E.coli strains were tested for the antibiotic resistance by using the AST card of the VITEK2. The antibiotic sensitivity test showed a high resistance towards Ampicillin (100%), Tetracycline (80%), Piperacillin(50%) and Chloramphenicol, Cephaexin and Sulfamethaxole-Trimethoprim (40%) for each and 30% of the isolates showed intermediate resistance toward Amoxicillin and Clavulinic acid. The polymerase chain reaction (PCR)was used to detect the genes encoding for alkaline phosphatase (phoA) , Shiga toxin type 1(stx1),Shiga toxin type 2( stx2) , Nonspecific TEM β-Lactamase (blaTEM),Tetracycline A (tetA).The results showed that all the investigated E.coli strains(n=10) harbored the alkaline phosphatase gene(phoA),100%.The Shiga toxin type one encoding gene(stx2) was found in one E.coli strain (O158), while none of E.coli strains has the Shiga toxin type 1 gene (stx1).One hundred percentage of the screened E.coli strains carried the blaTEM gene, while 80% of the strains harbored the tetA gene.
 

DOI

10.21608/scvmj.2017.62157

Keywords

E.coli, Antibiogram, phoAgene, Virulence genes, resistance genes

Authors

First Name

Ahmed

Last Name

Khafagy

MiddleName

-

Affiliation

Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Suez Canal University

Email

-

City

-

Orcid

-

First Name

Hamza

Last Name

Eid

MiddleName

-

Affiliation

Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Suez Canal University

Email

-

City

-

Orcid

-

First Name

Fatma

Last Name

Youssif

MiddleName

-

Affiliation

Animal Health Research Institute, Ismailia

Email

-

City

-

Orcid

-

First Name

Nour El Hoda

Last Name

Eid

MiddleName

-

Affiliation

North Sinai Department of Veterinary Medicine

Email

-

City

-

Orcid

-

Volume

22

Article Issue

2

Related Issue

9370

Issue Date

2017-12-01

Receive Date

2017-07-24

Publish Date

2017-12-01

Page Start

107

Page End

120

Print ISSN

1110-6298

Online ISSN

2682-3284

Link

https://scvmj.journals.ekb.eg/article_62157.html

Detail API

https://scvmj.journals.ekb.eg/service?article_code=62157

Order

10

Type

Original Article

Type Code

992

Publication Type

Journal

Publication Title

Suez Canal Veterinary Medical Journal. SCVMJ

Publication Link

https://scvmj.journals.ekb.eg/

MainTitle

Molecular characterization of Eschericha coli isolated from raw milk samples with emphasis on their antibiotic resistance and virulence markers

Details

Type

Article

Created At

22 Jan 2023