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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">antibiotics</journal-id><journal-title-group><journal-title xml:lang="ru">Антибиотики и Химиотерапия</journal-title><trans-title-group xml:lang="en"><trans-title>Antibiot Khimioter = Antibiotics and Chemotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0235-2990</issn><publisher><publisher-name>ООО «Издательство ОКИ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/0235-2990-2020-65-9-10-8-12</article-id><article-id custom-type="elpub" pub-id-type="custom">antibiotics-759</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 PAPERS</subject></subj-group></article-categories><title-group><article-title>Ингибирование репликации вируса клещевого энцефалита препаратами эпросартан и рибавирин in vitro и in vivo</article-title><trans-title-group xml:lang="en"><trans-title>Inhibition of Tick-Borne Encephalitis Virus Replication with Eprosartan and Ribavirin In Vitro and In Vivo</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леонова</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonova</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леонова Галина Николаевна — доктор медицинских наук, профессор, главный научный сотрудник лаборатории природно-очаговых инфекций</p><p>ул. Сельская 1, НИИ эпидемиологии и микробиологии им. Г. П. Сомова, Владивосток, 690087</p></bio><bio xml:lang="en"/><email xlink:type="simple">galinaleon41@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Майстровская</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Maistrovskaya</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Майстровская Ольга Сергеевна — младший научный сотрудник лаборатории природно-очаговых инфекций</p><p>Владивосток </p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лубова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lubova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лубова Валерия Александровна — младший научный сотрудник лаборатории природно-очаговых инфекций</p><p>Владивосток</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «НИИ эпидемиологии и микробиологии им. Г. П. Сомова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Somov Institute of Epidemiology and Microbiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>31</day><month>12</month><year>2020</year></pub-date><volume>65</volume><issue>9-10</issue><fpage>8</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Леонова Г.Н., Майстровская О.С., Лубова В.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Леонова Г.Н., Майстровская О.С., Лубова В.А.</copyright-holder><copyright-holder xml:lang="en">Leonova G.N., Maistrovskaya O.S., Lubova V.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://www.antibiotics-chemotherapy.ru/jour/article/view/759">https://www.antibiotics-chemotherapy.ru/jour/article/view/759</self-uri><abstract><p>В настоящее время ведется активный поиск новых противовирусных веществ. Цель работы — выявление ингибирующей активности препарата эпросартан в сравнении с рибавирином in vitro и in vivo по отношению к вирусу клещевого энцефалита. Установлено значение половинной максимальной цитотоксической концентрации (CC50) для эпросартана (8,8±1,2 мг/мл) и рибавирина (1,074±0,16 мг/мл). Для получения среднеэффективной вирусингибирующей концентрации (IC50) препаратов использовали данные ИФА. С помощью нелинейного регрессионного анализа показателей процента антиген положительных проб получены значения IC50 изучаемых веществ, которое для эпросартана при лечебной схеме составило 0,64±0,23 мг/мл. Селективный индекс (SI) или химиотерапевтический индекс (ХТИ) составил 13,7. IC50 рибавирина составила 0,0067±0,0015 мг/мл, SI или ХТИ равен 160. На культуре клеток СПЭВ подавление репродукции вируса 2,0 log TCID50 происходило под действием эпросартана при концентрациях 1,2–3,0 мг/мл (лечебная схема), рибавирина — 0,2 мг/мл (профилактическая схема) и 0,2–0,0125мг/мл (лечебная схема). На модели in vivo пробы с эпросартаном (1,5 и 0,6 мг/мл) по сравнению с контролем вируса показали увеличение выживаемости мышей до 50 и 20% и, соответственно, увеличение СПЖ на 5,2 и 2,1 дней. Пробы с рибавирином (0,05 и 0,025 мг/мл) увеличивали выживаемость мышей на 60 и 40% и, соответственно, увеличивали СПЖ на 7,3 и 4,8 дней. Полученные данные позволяют наряду с рибавирином рекомендовать препарат эпросартан в качестве активного средства против вируса КЭ.</p></abstract><trans-abstract xml:lang="en"><p>Active search for new antiviral substances is currently underway. The purpose of this work is to identify the inhibitory activity of eprosartan medication in comparison with ribavirin in vitro and in vivo in relation to tick-borne encephalitis virus. The value of the half the maximum cytotoxic concentration (CC50) for eprosartan (8.8±1.2 mg/ml) and ribavirin (1.074±0.16 mg/ml) was established. To obtain a medium effective virus-inhibiting concentration (IC50) of the medications, EIA data were used. Using nonlinear regression analysis of the percentage of antigen positive samples, IC50 values of the studied substances were obtained, which for eprosartan was 0.64±0.23 mg/ml in the treatment regimen. The selective index (SI) or chemotherapeutic index (CTI) was 13.7. The IC50 of ribavirin was 0.0067±0.0015 mg/ml, SI or CTI was 160. The suppression of viral reproduction 2.0 log TCID50 occurred in PEK cell culture under the influence of eprosartan at concentrations of 1.2–3.0 mg/ml (treatment regimen), under the influence of ribavirin — 0.2 mg/ml (prophylactic regimen) and 0.2–0.0125 mg/ml (treatment regimen). Samples with eprosartan (1.5 and 0.6 mg/ml) showed an increase in survival of mice by 50% and 20% compared with the virus control group in the in vivo model and, accordingly, an increase in average life expectancy of 5.2 and 2.1 days. Samples with ribavirin (0.05 and 0.025 mg/ml) increased the survival of mice by 60% and 40% and, accordingly, increased the life expectancy by 7.3 and 4.8 days. The data obtained allow recommending eprosartan as an active agent against tick-borne encephalitis virus along with ribavirin.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вирус клещевого энцефалита</kwd><kwd>эпросартан</kwd><kwd>рибавирин</kwd><kwd>противовирусная активность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tick-borne encephalitis virus</kwd><kwd>eprosartan</kwd><kwd>ribavirin</kwd><kwd>antiviral activity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана научным проектом (0545- 2019-0007) Федерального Государственного бюджетного научного учреждения</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">Lindenbach B.D., Thiel H.J., Rice C.M. Flaviviridaea: the viruses and their replication. In: Knipe D.M., Howley P.M. (Eds.) Fields Virology. 5th ed. 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