In vitro characterization and pathogenesis of Egypt/Beni-Suef; a novel genotype of infectious bronchitis virus | ||||
Journal of Veterinary Medical Research | ||||
Article 20, Volume 15, Issue 2, March 2005, Page 127-133 PDF (465.18 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jvmr.2005.77943 | ||||
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Authors | ||||
A. S. Abdel-Moneim1; H. M. Madbouly2; M. F. El-Kady3 | ||||
1Department of Virology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt. | ||||
2Department of Virology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt | ||||
3Department of Poultry Diseases, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt | ||||
Abstract | ||||
In vitro characterizations of infectious bronchitis virus (Egypt/Beni-Suef/01 strain) were studied. Heat stability at 56 °C for 5, 10, 15, 20, and 30 min, UV irradiation for 10, 15, 20, and 30 min, chloroform sensitivity, pH stability, and E/M examination were screened. Two-week-old commercial chickens were inoculated intraocularly with Egypt/Beni-Suef/01. At days 1, 3, 5, 7, 11 and 14 days postinfection, three birds were euthanatized, and virus antigens were screened using immunofluorescence. Histopathology of both trachea & kidney was also performed. Egypt /Beni-Suef/01 was found to be sensitive to 56 °C for 5 min, UV for 10 min and chloroform but resistant to pH 3 and pH 9. It showed typical morphology of coronaviruses by E/M. The virus was found to induce mild respiratory signs and sever renal changes. Immunoflourescence staining showed viral antigen in larynx, trachea, thymus, lung, liver, spleen, renal tubules and glomeruli as well as bursa of Fabricius but not in pancreas. Marked histopathological lesions were also detected in both trachea and kidneys. | ||||
Keywords | ||||
Vitro; Characterization; pathogenesis; genotype; infectious; bronchitis; virus | ||||
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