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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">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2022-3-164-169</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1739</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Патогенность вызывающих обеспокоенность вариантов вируса SARS-CoV-2 для сирийского хомячка</article-title><trans-title-group xml:lang="en"><trans-title>Pathogenicity of the SARS-CoV-2 Virus Variants of Concern for the Syrian Golden Hamster</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1201-8307</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шиповалов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shipovalov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шиповалов Андрей Владимирович</p><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Andrey V. Shipovalov</p><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">shipovalov_av@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8251-7040</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудров</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudrov</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5311-9783</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Томилов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tomilov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0599-3817</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боднев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bodnev</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8854-0287</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Болдырев</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Boldyrev</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1745-7643</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овчинникова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovchinnikova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0450-5212</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайковская</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaikovskaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6746-8092</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Таранов</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Taranov</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1194-7219</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ивлева</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivleva</surname><given-names>E. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3340-8750</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пьянков</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>P’yankov</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2577-0434</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Максютов</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maksyutov</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630559, Новосибирская обл., р.п. Кольцово</p></bio><bio xml:lang="en"><p>Kol’tsovo, Novosibirsk Region, 630559</p></bio><email xlink:type="simple">vector@vector.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФБУН «Государственный научный центр вирусологии и биотехнологии «Вектор»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Scientific Center of Virology and Biotechnology “Vector”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>164</fpage><lpage>169</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шиповалов А.В., Кудров Г.А., Томилов А.А., Боднев С.А., Болдырев Н.Д., Овчинникова А.С., Зайковская А.В., Таранов О.С., Ивлева Е.К., Пьянков О.В., Максютов Р.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Шиповалов А.В., Кудров Г.А., Томилов А.А., Боднев С.А., Болдырев Н.Д., Овчинникова А.С., Зайковская А.В., Таранов О.С., Ивлева Е.К., Пьянков О.В., Максютов Р.А.</copyright-holder><copyright-holder xml:lang="en">Shipovalov A.V., Kudrov G.A., Tomilov A.A., Bodnev S.A., Boldyrev N.D., Ovchinnikova A.S., Zaikovskaya A.V., Taranov O.S., Ivleva E.K., P’yankov O.V., Maksyutov R.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://journal.microbe.ru/jour/article/view/1739">https://journal.microbe.ru/jour/article/view/1739</self-uri><abstract><p>Целью работы является изучение патогенности различных генетических вариантов вируса SARS-CoV-2 на модели сирийского хомячка.</p><sec><title>Материалы и методы</title><p>Материалы и методы. В работе использовали штаммы вируса SARS-CoV-2, относящиеся к вызывающим обеспокоенность (VOC) вариантам, циркулирующим на территории РФ. Эксперименты проводили на аутбредных сирийских хомячках, полученных из питомника ГНЦ ВБ «Вектор». Инфекционный титр коронавируса в образцах тканей, полученных от зараженных лабораторных животных, определяли на культуре клеток Vero E6. Дополнительным параметром контроля вирусной нагрузки в пробах считали пороговое значение Ct в ОТ-ПЦР. Тяжесть поражения тканей легких сирийских хомячков при подобном COVID-19 заболевании оценивали по гистологическим препаратам.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Определены 50 % инфицирующие дозы при интраназальном способе заражения, проведен гистологический анализ тканей легкого. Оценена патогенность различных вариантов вируса SARS-CoV-2 для сирийского хомячка, выявлены различия инфицирующих доз и патологических изменений в легких. Вирусы SARS-CoV-2, относящиеся к генетическому варианту бета, характеризуются наибольшей, а к варианту альфа – наименьшей вирулентностью при сравнении по величине ИД50. Варианты дельта и омикрон обладают сравнимой способностью вызывать специфическое поражение тканей дыхательных путей, при этом уступая только варианту бета. Показано, что сирийские хомячки являются адекватной моделью для оценки патогенности вызывающих обеспокоенность вариантов вируса SARS-CoV-2. Таким образом, варианты VOC вируса SARS-CoV-2 при интраназальном заражении показали разную степень патогенности в модели сирийского хомячка.</p></sec></abstract><trans-abstract xml:lang="en"><p>The aim of the work was to study the pathogenicity of newly emerging variants of SARS-CoV-2 on the model of the Syrian golden hamster.</p><sec><title>Materials and methods</title><p>Materials and methods. We used the strains of SARS-CoV-2 virus related to the VOC circulating in the territory of the Russian Federation. The experiments were carried out on outbreed Syrian hamsters obtained from the nursery of the SSC VB “Vector”. The infectious titer of coronavirus in tissue samples collected from infected laboratory animals was determined on a Vero E6 cell culture. The Ct in RT-PCR was considered an additional parameter for monitoring the viral load in the samples. The severity of lung tissue damage in Syrian hamsters with COVID-19 was assessed by histological preparations.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. 50 % infecting doses in case of the intranasal infection have been determined, histological analysis of lung tissues performed. The pathogenicity of various variants of the SARS-CoV-2 virus for the Syrian hamster has been evaluated, differences in infecting doses and pathological changes in the lungs have been revealed. SARS-CoV-2 viruses belonging to Beta genetic variant have the highest virulence, while Alpha variant has the lowest one when comparing the studied strains by the ID50 value. The Delta and Omicron variants have a matched ability to cause specific damage to the tissues of the respiratory tract, while being inferior only to the Beta variant. It has been demonstrated that Syrian hamsters are an adequate model for assessing the pathogenicity of the SARS-CoV-2 virus variants of concern. Variants of SARS-CoV-2 virus during intranasal infection has shown different degree of pathogenicity in the Syrian hamster model.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>вызывающие обеспокоенность варианты (VOC)</kwd><kwd>сирийский хомячок</kwd><kwd>50 % инфицирующая доза</kwd><kwd>интраназальное заражение</kwd><kwd>модельное животное</kwd></kwd-group><kwd-group xml:lang="en"><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>variants of concern (VOC)</kwd><kwd>Syrian golden hamster</kwd><kwd>50 % infecting dose</kwd><kwd>intranasal infection</kwd><kwd>model animal</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Coronaviridae Study Group of the International Committee on Taxonomy of Viruses. The species Severe acute respiratory syndrome-related coronavirus: classifying 2019-nCoV and naming it SARS-CoV-2. Nat. 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