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Therapeutic efficacy of n-Docosanol against velogenic Newcastle disease virus infection in domestic chickens
Faculty
Veterinary Medicine
Year:
2022
Type of Publication:
ZU Hosted
Pages:
Authors:
Ayman Abdelattef Salleh
Staff Zu Site
Abstract In Staff Site
Journal:
Frontiers in Microbiology Frontiersin.org
Volume:
Keywords :
Therapeutic efficacy , n-Docosanol against velogenic Newcastle
Abstract:
Introduction: The control of Newcastle disease virus (NDV) infection depends solely on vaccination which in most cases is not sufficient to restrain the consequences of such a highly evolving viral disease. Finding out substances for preparing an efficient anti-ND drug would be of high value. n-Docosanol is a saturated fatty alcohol with an inhibitory effect against many enveloped viruses. In this study, we evaluated the therapeutic effect of n-docosanol on NDV infection and shedding in chickens. Methods: Chickens infected with a highly virulent NDV were treated with low to high concentrations of n-docosanol (20, 40, and 60 mg/kg body weight) for 4-successive days, once they showed the disease symptoms. Survival and curative rates, virus load, histopathological scoring, and virus shedding were defined. Results: Symptoms development was found to discontinue 24–72 hours post-treatment. Survival rate in the NDV-infected chickens raised 37.4–53.2% after the treatment. n-Docosanol treatment was also found to significantly reduce virus load in the digestive (26.2–33.9%), respiratory (38.3–63%), nervous (26.7–51.1%), and lymphatic (16.4–29.1%) tissues. Histopathological scoring of NDV lesions revealed prominent rescue effects on the histology of different tissues. Importantly, n-docosanol treatment significantly reduced virus shedding in oropharyngeal discharge and feces thereby allowing the restriction of NDV spread. Conclusion: Our findings suggest n-docosanol as a promising remedy in the control strategy of Newcastle disease in the poultry industry.
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Department Related Publications
Ahmed Abdelsamiea Hassan Aali, "عزل وتوصيف فيروس إلتهاب الشعب الهوائية المعدى فى الدواجن", لايوجد, 1900
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Shimaa Mohamed Galal, "Cleavage site stability of Egyptian highly pathogenic avian influenza viruses in backyard chickens during 2009-2011", Journal of Microbiology, Immunology and Infection, 2013
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Fatma Mohamed Abdallah, "Genetic Analysis of Infectious Bronchitis Virus Isolated from Egyptian Broiler Chicken Flocks between 2017 and 2018", Nexus academic, 2019
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