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Prevalence of Yersinia enterocolitica in milk and dairy products and the effects of storage temperatures on survival and virulence gene expression
Faculty
Veterinary Medicine
Year:
2019
Type of Publication:
ZU Hosted
Pages:
Authors:
Heba Ahmed Abdallah Abdelmgeed
Staff Zu Site
Abstract In Staff Site
Journal:
الدراسات والبحوث التجارية Elsiever
Volume:
Keywords :
Prevalence , Yersinia enterocolitica , milk , dairy products
Abstract:
Yersinia enterocolitica was isolated from raw milk and dairy products from 10% of the 2 examined samples. The highest isolation rate was 22%, from raw milk, followed by 12%, 4% 3 and 2% from fermented milk (Rayeb), pasteurized milk and ripened salted cheese, respectively. 4 The virulence-associated genes ail and yst were detected in 30 and 10% of the isolates, 5 respectively, while these genes were present simultaneously in 10% of the isolates. All the 6 isolates showed susceptibility to gentamicin, ciprofloxacin and chloramphenicol, while only two 7 of the isolates exhibited multidrug resistance. Storage of inoculated pasteurized milk at 8 refrigeration (4°C), freezing (-20°C) and room (25°C) temperatures revealed significant 9 differences in Y. enterocolitica counts and relative expression of the two virulence genes. In 10 conclusion, the isolation of potentially pathogenic Y. enterocolitica isolates from retail dairy 11 products pose risk to consumers. Therefore, screening of the prevalence, pathogenicity potential 12 and antibiotic resistance is essential to implement control measures.
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Heba Ahmed Abdallah Abdelmgeed, "Occurrence, genotyping, shiga toxin genes and associated risk factors of E. coli isolated from dairy farms, handlers and milk consumers", Elsevier Ltd., 2016
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Heba Ahmed Abdallah Abdelmgeed, "A comparative evaluation of PCR- based methods for species- specific determination of African animal trypanosomes in Ugandan cattle", BioMed Central Ltd., 2013
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Heba Ahmed Abdallah Abdelmgeed, "Cleavage site stability of Egyptian highly pathogenic avian influenza viruses in backyard chickens during 2009-2011", Elsevier B.V, 2014
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Department Related Publications
Mohammed Naser Mohamed Ali, "Survival of Foot and Mouth disease virus strain O, / 2 /72 in Egypt outside the animal body", لايوجد, 1900
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Heba Ahmed Abdallah Abdelmgeed, "A comparative evaluation of PCR- based methods for species- specific determination of African animal trypanosomes in Ugandan cattle", BioMed Central Ltd., 2013
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Maysa Abdelbadea Ibrahiem Awaadallah , "تأثير بعض المطهرات الكيميائية شائعة الاستخدام و الأشعة فوق البنفسجية على خمسة من الملوثات الفطرية ذات الاهمية البيطرية والصحية واسعة الانتشار فى مساكن الماشية", Fac. of Veterinary Med. Zagazig University, Egypt, 2010
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Mohammed Alsayed MohamedMohamed , "Effect of Interferon-α on bovine Rota virus. تأثير انترفيرون الفا على فيروس روتا", كلية الطب البيطرى - جامعة بنها, 2010
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