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Genetic Diversity of Campylobacter jejuni Isolated From Avian and Human Sources in Egypt
Faculty
Veterinary Medicine
Year:
2019
Type of Publication:
ZU Hosted
Pages:
Authors:
Norhan Khayry Abdelaziz Mahmoud
Staff Zu Site
Abstract In Staff Site
Journal:
Frontiers in Microbiology Frontiers
Volume:
Keywords :
Genetic Diversity , Campylobacter jejuni Isolated From
Abstract:
Campylobacter jejuni (C. jejuni) are able to colonise and infect domestic poultry and also pose a risk for humans. The aim of this study was to determine the extent of genotypic diversity among C. jejuni isolates recovered from avian and human sources in Egypt. Furthermore, the short variable region (SVR) of flagellin A (flaA) gene was analysed for the presence of allelic variants. Our results showed that C. jejuni isolates differ in their capacity to harbour each of the virulence genes alone or when present in various combinations. The flaA gene was detected in all C. jejuni strains and none of the strains had all the studied virulence genes together. When considering C. jejuni strains from the investigated sources, the cdtC gene was the most similar, while the cdtB and iam genes were the most dissimilar. We could identify 13 novel alleles in the analysed strains. The analyses of virulence gene patterns, flaA gene sequences and allelic variants showed that C. jejuni strains from different sources overlapped largely suggesting potential involvement of poultry in transmitting C. jejuni to humans. We also found that the strains isolated from the same host were highly heterogeneous, with chicken strains exhibiting the highest diversity. Moreover, the human strains were clustered closer to chicken ones than to those from pigeon. The results of this study should be taken into consideration when assessing the epidemiology and risk potential of Egyptian C. jejuni not only in poultry, but also in humans.
Author Related Publications
Norhan Khayry Abdelaziz Mahmoud, "Mutations of domain V in 23S ribosomal RNA of macrolide-resistant Mycoplasma gallisepticum isolates in Egypt", Open Learning on Enteric Pathogens, 2016
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Norhan Khayry Abdelaziz Mahmoud, "Propidium Monoazide Quantitative Real-Time Polymerase Chain Reaction for Enumeration of Some Viable but Nonculturable Foodborne Bacteria in Meat and Meat Products", Mary Ann Liebert, Inc., 2018
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Norhan Khayry Abdelaziz Mahmoud, "Class 1 integron and associated gene cassettes mediating multiple-drug resistance in some food borne pathogens", Malaysia, 2016
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Norhan Khayry Abdelaziz Mahmoud, "حلقة نصاب الاستشعار الهرمى المعقد تنظم التعبير الجينى للفينازين فى السيدوموناس ايروجينوزا", The Journal of Infection in Developing Countries, 2016
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Norhan Khayry Abdelaziz Mahmoud, "تلازم محددات المقاومة للكينولون بواسطة البلازميد و AmpC بيتا لاكتاماز فى عترات الاشرشيا كولاى فى مصر", Cellular and Molecular Biology, 2016
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Department Related Publications
Ahlaam Abd Al Aziz Gharieb Ibrahim, "Association of Plasmid-Mediated Quinolone Resistance with AmpC- Beta-Lactamase Producing E. coli strains from Different Sources", Zagazig Univerisity, 2014
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Iman Ibrahim Attia Sweilem, "The presence of toxin genes of Clostridium perfringens isolated from camels and humans in Egypt. تواجد جينات السموم في المطثية الحاطمة المعزولة من الإبل والآدميين بمصر", كلية الطب البيطرى كرواتيا, 2010
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Iman Ibrahim Attia Sweilem, "Isolation of Staphylococcus aureus from milk and human with reference to its survival on surfaces. عزل المكور العنقودى الذهبى من الحليب والآدميين مع الإشارة لبقائها على الأسطح.", كلية الطب البيطرى - جامعة الزقازيق, 2013
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Lamia Mohammad Reza Mohammad Noman, "Studies on Antibiotic Resistance of Escherichia coli isolated from poultry and children", Sues Canal Vet. Med. J, accepted for publication (2013), 2013
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Lamia Mohammad Reza Mohammad Noman, "Bacteriological studies of Salmonella typhimurium isolated from cow calves and lambs", Assiut Vet. Med. J. Vol. 60 No. 140 January 2014, 2014
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