Interferonogenic activity of the strain BH-3 duck hepatitis virus type I (Picornaviridae: Avihepatovirus: Avihepatovirus A)
- Authors: Nikitina N.V.1, Leonov I.K.1, Yavdoshak L.I.1
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Affiliations:
- FSBRI «All-Russian Research Veterinary Institute of Poultry Science» – Branch of the FSBRI FSC «All-Russian Research and Technological Poultry Institute» of Russian Academy of Sciences
- Issue: Vol 66, No 2 (2021)
- Pages: 162-166
- Section: TO VIROLOGIST’S AID
- URL: https://ogarev-online.ru/0507-4088/article/view/118177
- DOI: https://doi.org/10.36233/0507-4088-43
- ID: 118177
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Abstract
Introduction. Duck viral hepatitis type I (DVH-I) is a poorly studied contagious disease caused by RNA-containing duck (Anatinae) hepatitis virus type I (Picornaviridae: Avihepatovirus: Avihepatovirus A). This infection is widespread in many countries, including Russia, and causes significant damage to industrial duck breeding. The study of interferonogenic activity of its etiologic agent strains is of great importance in solving the problem of developing effective means to control the disease.
Material and methods. Strain BH-3 of duck hepatitis virus type I isolated from the liver of sick ducklings was used in the study. The strain was adapted to developing 10–12 day old duck embryos, to the cell culture of chicken and duck fibroblasts and deposited in the State Collection of Viruses of the D.I. Ivanovsky Institute of Virology of FSBI «National Research Centre for Epidemiology and Microbiology named after the honorary academician N.F. Gamaleya» of the Ministry of Health of Russia. Experiments were performed using the standard tissue culture method.
Results and discussion. Data on the ability of the viral strain BH-3 to induce interferon (IFN) and its sensitivity to the action of exogenous interferon in the culture of duck fibroblasts are presented. It has been shown that the interferonogenic activity of this strain of the hepatitis virus is in direct proportion to the multiplicity of infection. The maximum induction of IFN (1 : 256 CEPD50) was observed at a dose of 1.0 TCD50/cell in 72–96 hrs after inoculation of the cell culture. Exogenous IFN at a dose of 1 : 128 completely suppressed the cytopathic effect and death of duck embryos infected with hepatitis virus at a dose of 100 TCD50/cell.
Conclusion. The data obtained allow us to state that the vaccine strain BH-3 of duck hepatitis virus type I has a pronounced interferonogenic activity and sensitivity to the action of exogenous IFN. This may have implications for the development of effective therapeutic agents against DVH-I.
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##article.viewOnOriginalSite##About the authors
N. V. Nikitina
FSBRI «All-Russian Research Veterinary Institute of Poultry Science» – Branch of the FSBRI FSC «All-Russian Research and Technological Poultry Institute» of Russian Academy of Sciences
Author for correspondence.
Email: vnivip.nikitina@yandex.ru
ORCID iD: 0000-0002-7500-3172
Nikitina Nina Vasil’evna, Ph.D. (Biol.), Associate Professor, Leading Researcher of the Department of Virology and Tumor Diseases of Poultry named after R.N. Korovin
198412, St. Petersburg – Lomonosov
Russian FederationI. K. Leonov
FSBRI «All-Russian Research Veterinary Institute of Poultry Science» – Branch of the FSBRI FSC «All-Russian Research and Technological Poultry Institute» of Russian Academy of Sciences
Email: leonov_ila@mail.ru
ORCID iD: 0000-0002-5342-1912
Leonov Il’ya Konstantinovich, Ph.D. (Vet.), Senior Researcher of the Department of Virology and Tumor Diseases of Poultry named after R.N. Korovin
198412, St. Petersburg – Lomonosov
Russian FederationL. I. Yavdoshak
FSBRI «All-Russian Research Veterinary Institute of Poultry Science» – Branch of the FSBRI FSC «All-Russian Research and Technological Poultry Institute» of Russian Academy of Sciences
Email: yavdoshak2014@yandex.ru
Yavdoshak Larisa Ivanovna, Senior Researcher of the Department of Virology and Tumor Diseases of Poultry named after R.N. Korovin
198412, St. Petersburg – Lomonosov
Russian FederationReferences
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