Shiga Toxin-Producing Escherichia coli Isolated from Bovine Mastitic Milk : Serogroups, Virulence Factors, and Antibiotic Resistance Properties
Joint Authors
Rezvani, Amir
Safarpoor Dehkordi, Farhad
Yarali, Sajad
Momtaz, Hassan
Taktaz, Taghi
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-19
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
The aim of this study was to detect the virulence factors, serogroups, and antibiotic resistance properties of Shiga toxin-producing Escherichia coli, by using 268 bovine mastitic milk samples which were diagnosed using California Mastitis Test.
After E.
coli identification, PCR assays were developed for detection of different virulence genes, serogroups, and antibiotic resistance genes of Escherichia coli.
The antibiotic resistance pattern was studied using disk diffusion method.
Out of 268 samples, 73 (27.23%) were positive for Escherichia coli, and, out of 73 positive samples, 15 (20.54%) were O26 and 11 (15.06%) were O157 so they were the highest while O111 was not detected in any sample so it was the lowest serogroup.
Out of 73 STEC strains, 11 (15.06%) and 36 (49.31%) were EHEC and AEEC, respectively.
All of the EHEC strains had stx1, eaeA, and ehly, virulence genes, while in AEEC strains stx1 had the highest prevalence (77.77%), followed by eaeA (55.55%).
Totally, aadA1 (65.95%) had the highest while blaSHV (6.38%) had the lowest prevalence of antibiotic resistance genes.
The disk diffusion method showed that the STEC strains had the highest resistance to penicillin (100%), followed by tetracycline (57.44%), while resistance to cephalothin (6.38%) was the lowest.
American Psychological Association (APA)
Momtaz, Hassan& Safarpoor Dehkordi, Farhad& Taktaz, Taghi& Rezvani, Amir& Yarali, Sajad. 2012. Shiga Toxin-Producing Escherichia coli Isolated from Bovine Mastitic Milk : Serogroups, Virulence Factors, and Antibiotic Resistance Properties. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-485612
Modern Language Association (MLA)
Momtaz, Hassan…[et al.]. Shiga Toxin-Producing Escherichia coli Isolated from Bovine Mastitic Milk : Serogroups, Virulence Factors, and Antibiotic Resistance Properties. The Scientific World Journal No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-485612
American Medical Association (AMA)
Momtaz, Hassan& Safarpoor Dehkordi, Farhad& Taktaz, Taghi& Rezvani, Amir& Yarali, Sajad. Shiga Toxin-Producing Escherichia coli Isolated from Bovine Mastitic Milk : Serogroups, Virulence Factors, and Antibiotic Resistance Properties. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-485612
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-485612