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Coexistence of Virulence and Antibiotic Resistance Genes in Pasteurella multocida Isolated from Diseased Rabbits
Faculty
Veterinary Medicine
Year:
2019
Type of Publication:
ZU Hosted
Pages:
Authors:
Naglaa Fathy Said Awad
Staff Zu Site
Abstract In Staff Site
Journal:
Hosts and Viruses Faculty of Veterinary Medicine, Zagazig University
Volume:
Keywords :
Coexistence , Virulence , Antibiotic Resistance Genes , Pasteurella
Abstract:
Pasteurella multocida (P. multocida) is considered a predominant pathogenic bacterial agent causing respiratory manifestations (snuffles) in rabbits with considerable economic losses and unfavorable prognosis in Egypt. A few recent P. multocida strains exhibit resistance to the most commonly used antibiotics in the veterinary field. Therefore, the present study was carried out to investigate the prevalence of both virulence and antibiotic resistance genes among P. multocida isolated from diseased rabbits in Sharkia Governorate, Egypt. Only 10 out of 100 tested rabbits` nasal swabs were finally confirmed positive for P. multocida of serogroup A by polymerase chain reaction (PCR). Antibiotic susceptibility testing of the recovered isolates revealed that they were all multidrug resistant (MDR) with a predominance of resistance to amoxicillin, ampicillin, amoxicillin/clavulanic acid, neomycin and tetracycline (100% each), followed by kanamycin and streptomycin (90% each). All the recovered isolates were further subjected to PCR screening of some common virulence and antibiotic resistance genes of interest . With the exception of toxA gene, the other virulence associated genes (ptfA, Omp87 and nanB) were found among all the examined isolates. Totally, all MDR P. multocida isolates contained at least one antibiotic resistance gene with aphA1 being the most prevalent (100%), followed by ermX gene (40%). Antibiotic resistance genotyping demonstrated the presence of multiple antibiotic resistance genes among majority of the isolates (40%) with only one isolate harboring 4 genes encoding identical resistance phenotypes. Evidentially, all MDR P. multocida isolates possessed at least 3 virulence genes accompanied by the attendance of antibiotic resistance genes. These findings evidenced that rabbits are potential sources of pathogenic P. multocida strains harboring virulence and antibiotic resistance genes. Therefore, it is evident that there is an urgent need for the judicious use of antibiotics in rabbits` treatment systems to successfully mitigate the propagation of drug resistance across P. multocida species.
Author Related Publications
Naglaa Fathy Said Awad, "In vitro evaluation of various antimicrobials against field mycoplasma gallisepticum and mycoplasma synoviae isolates in Egypt", Oxford University Press, 2019
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Naglaa Fathy Said Awad, "Phylogenetic Analysis of Infectious Bronchitis Viruses Currently Circulating in the Egyptian Field", Faculty of Veterinary Medicine, Zagazig University, 2019
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Naglaa Fathy Said Awad, "Genetic characterization of rabbit hemorrhagic disease virus from naturallyinfected rabbits in Sharkia governorate, Egypt", Egyptian Society of Virology, 2018
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Naglaa Fathy Said Awad, "Molecular Diagnosis of Persistently Very Virulent Infectious Bursal Disease Virus at Sharkia Governorate, Egypt", C M B Association, 2019
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Naglaa Fathy Said Awad, "Impact of single and mixed infections with Escherichia coli and Mycoplasma gallisepticum on Newcastle disease virus vaccine performance in broiler chickens: an in vivo perspective", Wiley-Blackwell on behalf of the Society for Applied Microbiology, 2019
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Department Related Publications
Hala Mohamed Nabil Tolba, "Risk factors associated with Chlamydia psittaci infections in psittacine birds and bird handlers", Wiley, 2018
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Hala Mohamed Nabil Tolba, "Molecular identification of avian influenza virus subtypes H5N1 and H9N2 in birds from farms and live bird markets and in respiratory patients", Peer journal, 2018
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Hala Mohamed Nabil Tolba, "Seroprevalence and risk factors associated with Toxoplasma gondii infection in domestic rabbits and humans", ELSEVIER, 2017
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Hala Mohamed Nabil Tolba, "Molecular Diagnosis of Persistently Very Virulent Infectious Bursal Disease Virus at Sharkia Governorate, Egypt", Links Research, 2019
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Hala Mohamed Nabil Tolba, "EFFECT OF THE MEDICINAL PLANT (AZADIRACHTA INDICA) ON Chlamydophila psittaci INFECTION IN BROILER CHICKENS", UNIV LJUBLJANA, VETERINARY FACULTY, GERBICEVA 60, LJUBLJANA, SLOVENIA, 1000, 2018
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