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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">ivm</journal-id><journal-title-group><journal-title xml:lang="ru">Международный вестник ветеринарии</journal-title><trans-title-group xml:lang="en"><trans-title>International Journal of Veterinary Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2419</issn><publisher><publisher-name>SpbGUVM Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52419/ISSN2072-2419.2022.4.34</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-962</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИНФЕКЦИОННЫЕ БОЛЕЗНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFECTIOUS DISEASES</subject></subj-group></article-categories><title-group><article-title>Изучение экспресии ключевых генов неспецифического иммунного ответа в организме gallus gallus domesticus под влиянием инфицирования иммунодепрессивными вакцинными вирусами</article-title><trans-title-group xml:lang="en"><trans-title>Expression of the genes of non-specific immune response in the body of gallus gallus domesticus under the influence of immunodepressive vaccine viruses</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6474-9171</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тарлавин</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarlavin</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.в.н., ассистент кафедры эпизоотологии им. В.П. Урбана </p></bio><bio xml:lang="en"><p> Ph.D., assistant of the Department of Epizootology named after V.P. Urbana </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9648-2259</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Веретенников</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Veretennikov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> ассистент кафедры эпизоотологии им. В.П. Урбана </p></bio><bio xml:lang="en"><p> Assistant of the Department of Epizootology named after V.P. Urbana </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1589-6300</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джавадов</surname><given-names>Э. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Javadov</surname><given-names>E. J.</given-names></name></name-alternatives><bio xml:lang="ru"><p> д.в.н., профессор кафедры эпизоотологии им. В.П. Урбана </p></bio><bio xml:lang="en"><p>Doctor of Veterinary Sciences, Professor of the Department of Epizootology named after V.P. Urbana </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2362-2641</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Красков</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kraskov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Студент </p></bio><bio xml:lang="en"><p> student </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Санкт-Петербургский государственный университет ветеринарной медицины»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBEI HE St. Petersburg State University of Veterinary Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>27</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>4</issue><fpage>34</fpage><lpage>41</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тарлавин Н.В., Веретенников В.В., Джавадов Э.Д., Красков Д.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Тарлавин Н.В., Веретенников В.В., Джавадов Э.Д., Красков Д.А.</copyright-holder><copyright-holder xml:lang="en">Tarlavin N.V., Veretennikov V.V., Javadov E.J., Kraskov D.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vetjournal.spbguvm.ru/jour/article/view/962">https://vetjournal.spbguvm.ru/jour/article/view/962</self-uri><abstract><p>Организм реагирует на воздействие инфекционных агентов посредством активации процессов экспрессии генов в клетках и тканях различных органов, входе чего образуется матричная РНК, комплементарная ДНК экспрессирующихся генов. В данной статье рассмотрено влияние вакцинных вирусов инфекционной бурсальной болезни и инфекционной анемии цыплят на морфологию таргетных органов иммунной системы цыплят, а также экспрессию ряда ключевых генов неспецифического иммунного ответа в клетках этих органов.Методы. В качестве примера вакцинного вируса инфекционной бурсальной болезни взята иммунокомплексная вакцина против инфекционной бурсальной болезни из штамма “ВНИВИП”, в качестве образца вакцинного вируса инфекционной анемии цыплят - вакцина Нобилис® CAV P4 производства MSD Animal Health.Результаты. Был сделан вывод, что вакцинные вирусы контактируют с органамимишенями (фабрициевой сумкой и тимусом), вызывая ряд патологоанатомических изменений. Также была определена экспрессия иммунных генов IL8L2, PTGS2, IRF7, как основных генов, отвечающих за синтез противовирусных и воспалительных белков. По результатам исследований были сделаны выводы, что гены IL8L2 и PTGS2, отвечающие за синтез воспалительных компонентов, активно экспрессируются при воздействии на клетки вирусов инфекционной анемии цыплят и инфекционной бурсальной болезни. Экспрессия гена IRF7 в иммунных органах опытных групп цыплят практически не отличалась от уровня экспрессии в органах-мишенях контрольных птиц по причине иммунодепрессивного действия вирусов.</p></abstract><trans-abstract xml:lang="en"><p>Relevance. The body reacts to the impact of infectious agents by activating the processes of gene expression in cells and tissues of various organs, which results in the formation of messenger RNA, complementary to the DNA of the expressed genes. This article discusses the effect of vaccine viruses of infectious bursal disease and infectious anemia of chickens on the morphology of target organs of the immune system of chickens, as well as the expression of a number of key genes of nonspecific immune response in the cells of these organs.Methods. As an example of a vaccine virus for infectious bursal disease, an immunocomplex vaccine against infectious bursal disease from the VNIVIP strain was taken; as a sample of a vaccine virus for infectious anemia in chickens, the Nobilis® CAV P4 vaccine manufactured by MSD Animal Health was taken.Results. It was concluded that vaccine viruses come into contact with target organs (the bursa of Fabricius and thymus), causing a number of pathological changes. The expression of the immune genes IL8L2, PTGS2, IRF7 was also determined as the main genes responsible for the synthesis of antiviral and inflammatory proteins. Based on the results of the studies, it was concluded that the IL8L2 and PTGS2 genes responsible for the synthesis of inflammatory components are actively expressed when the cells are exposed to the viruses of infectious anemia of chickens and infectious bursal disease. The expression of the IRF7 gene in the immune organs of the experimental groups of chickens did not practically differ from the level of expression in the target organs of the control birds due to the immunosuppressive effect of the viruses.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>инфекционная анемия цыплят</kwd><kwd>экспрессия генов</kwd><kwd>инфекционная бурсальная болезнь</kwd><kwd>полимеразная цепная реакция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Infectious anemia in chickens</kwd><kwd>gene expression</kwd><kwd>infectious bursal disease</kwd><kwd>polymerase chain reaction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-26- 20084, https://rscf.ru/project/22-26-20084/</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation grant №22-26-20084, https://rscf.ru/project/22-26-20084/.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Тарлавин Н.В., Джавадов Э.Д., Козыренко О.В. 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