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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Problems of Virology</journal-id><journal-title-group><journal-title xml:lang="en">Problems of Virology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы вирусологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0507-4088</issn><issn publication-format="electronic">2411-2097</issn><publisher><publisher-name xml:lang="en">Central Research Institute for Epidemiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">12231</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The аnti-viral activity of the complex glycyrrhizic acid–alpha-glutamyl-tryptophan against Experimental lethal influenza infection in white Mice caused by oseltamivirresistant strain of the virus</article-title><trans-title-group xml:lang="ru"><trans-title>Противовирусная активность комплекса глицирризиновая кислота-глутамил-триптофан при экспериментальной летальной гриппозной инфекции у белых мышей, вызванной озельтамивирустойчивым штаммом вируса</trans-title></trans-title-group></title-group><pub-date date-type="pub" iso-8601-date="2013-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2013</year></pub-date><volume>58</volume><issue>5</issue><issue-title xml:lang="en">VOL 58, NO5 (2013)</issue-title><issue-title xml:lang="ru">ТОМ 58, №5 (2013)</issue-title><fpage>19</fpage><lpage>26</lpage><history><date date-type="received" iso-8601-date="2023-06-09"><day>09</day><month>06</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2013, Smirnov V.S., Garshinina A.V., Guseva V.M., Kalinina N.A., Shtro A.A., Belyaevskaya S.V., Anikin V.B., Zarubaev V.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2013, Смирнов В.С., Гаршинина А.В., Гусева В.М., Калинина Н.А., Штро А.А., Беляевская С.В., Аникин В.Б., Зарубаев В.В.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="en">Smirnov V.S., Garshinina A.V., Guseva V.M., Kalinina N.A., Shtro A.A., Belyaevskaya S.V., Anikin V.B., Zarubaev V.V.</copyright-holder><copyright-holder xml:lang="ru">Смирнов В.С., Гаршинина А.В., Гусева В.М., Калинина Н.А., Штро А.А., Беляевская С.В., Аникин В.Б., Зарубаев В.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://virusjour.crie.ru/jour/article/view/12231">https://virusjour.crie.ru/jour/article/view/12231</self-uri><abstract xml:lang="en"><p>Influenza virus is a leading causing factor of infectious respiratory human pathology. The ability to implement the antigenic drift and development of drug resistance makes it important to develop novel anti-influenza drugs of wide spectrum of activity. in this work, we present the results of the study of the activity of a combination of glycyrrhizic acid with dipeptide alpha-glutamyl-tryptophan against oseltamivir-reistant strain of the virus A/ Vladivostok/2/09 (H1N1) on the model of lethal influenza infection in white mice. Application of Orvilax was shown to decrease the specific mortality of animals (index of protection 39-67% depending on the dose of the virus and drugs combination), to increase the mean day of death to 3.7-5.0 days and decrease the infectious titer of the virus in lung tissue to 1.3 lg EiD 50/20 mg. The corresponding figures for the reference compound Tamiflu were 8-11%, 0.5-1.5 days, and 0.6 lg EiD 50/20 mg. The use of Orvilax also led to reliable increase of the titers of interferon in the blood from 30.4 to 56.5 ME/mL. The results obtained allow the drug to be considered as a promising anti-influenza remedy that is active against the drug-resistant virus strains.</p></abstract><trans-abstract xml:lang="ru"><p>Вирус гриппа является ведущей причиной инфекционной респираторной патологии человека. Способность к антигенной изменчивости и выработке лекарственной устойчивости делают актуальными поиск и разработку новых противогриппозных препаратов широкого спектра активности. в настоящей работе изучена активность комбинации глицирризиновой кислоты с дипептидом - глутамил-триптофаном (препарат орвилакс) в отношении озельтамивирустойчивого штамма вируса А/Владивосток/2/09(Н1Ш) на модели летальной гриппозной инфекции у белых мышей. Показано, что применение орвилакса в виде монопрепарата и комбинации с озельтамивиром приводит к снижению специфической смертности животных (индекс защиты 39-67% в зависимости от дозы вируса и сочетания препаратов), увеличению средней продолжительности жизни животных на 3,7-5 сут и снижению титров вируса в ткани легких на 1,3 lg EiD 50/20 мг. Соответствующие показатели для препарата сравнения тамифлю составили 8-11%, 0,5-1,5 сут и 0,6 lg EiD 50/20 мг. Применение орвилакса также приводило к достоверному повышению титров интерферона в крови инфицированных животных с 30,4 до 56,5 ед/мл. Полученные данные позволяют рассматривать орвилакс как перспективное противогриппозное средство, активное в отношении лекарственно-устойчивых штаммов вируса.</p></trans-abstract><kwd-group xml:lang="en"><kwd>influenza</kwd><kwd>chemotherapy</kwd><kwd>glycyrrhizic acid</kwd><kwd>glutamyl-tryptophan</kwd><kwd>drug resistance</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>грипп</kwd><kwd>химиотерапия</kwd><kwd>глицирризиновая кислота</kwd><kwd>глутамил-триптофан</kwd><kwd>лекарственная устойчивость</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Смирнов В.С., ред. Клиническая фармакология тимогена. СПб.: ФАРМИндекс; 2004.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Смирнов В.С., Зарубаев В.В., Анфимов П.М., Штро А.А. Влияние комбинации глутамил-триптофана с глицирризиновой кислотой на течение острой инфекции у мышей, вызванной вирусом гриппа (H3N2). 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