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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="other" 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">148</article-id><article-id pub-id-type="doi">10.18821/0507-4088-2017-62-2-91-96</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL RESEARCHES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Detection and molecular characterization of reassortant DS-1-like G1P [8] strains of rotavirus A</article-title><trans-title-group xml:lang="ru"><trans-title>Обнаружение и молекулярная характеристика реассортантных DS-1-подобных G1P[8] штаммов ротавируса группы А</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Morozova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Морозова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga.morozova.bsc@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sashina</surname><given-names>T. A.</given-names></name><name xml:lang="ru"><surname>Сашина</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">I.N. Blokhina Nizhny Novgorod Research Institute of Epidemiology and Microbiology</institution></aff><aff><institution xml:lang="ru">ФБУН «Нижегородский НИИ эпидемиологии и микробиологии им. академика И.Н. Блохиной» Роспотребнадзора</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lobachevsky State University of Nizhny Novgorod</institution></aff><aff><institution xml:lang="ru">ФГБОУ «Нижегородский государственный университет им. Н.И. Лобачевского»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-04-20" publication-format="electronic"><day>20</day><month>04</month><year>2017</year></pub-date><volume>62</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>91</fpage><lpage>96</lpage><history><date date-type="received" iso-8601-date="2020-01-20"><day>20</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, Morozova O.V., Sashina T.A., Novikova N.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, Морозова О.В., Сашина Т.А., Новикова Н.А.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Morozova O.V., Sashina T.A., Novikova N.A.</copyright-holder><copyright-holder xml:lang="ru">Морозова О.В., Сашина Т.А., Новикова Н.А.</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/148">https://virusjour.crie.ru/jour/article/view/148</self-uri><abstract xml:lang="en"><p>Group A rotaviruses (RVA) are the main cause of viral gastroenteritis in children worldwide. In this study we provide the molecular characteristics of reassortant DS-1-like G1P[8] RVA strains detected in Russia for the first time. Previously, such reassortant strains were detected in Japan and Thailand. The G1P[8] RVAs with DS-1-like short electropherotype RNA-PAGE were isolated from children hospitalised with an acute gastroenteritis during the 2013-2014 period. The DS-1-like G1P[8] strains accounted for 2.6% of all RVA strains detected continuously throughout the season. A phylogenetic analysis was made on the basis of the established nucleotide sequences of genes VP7, VP8* (VP4), VP6 and NSP4. The Nizhny Novgorod strains belong to G1-I and G1-II alleles of VP7 gene and to P[8]-3 allele of VP4. According to their VP6 sequences, two Russian samples clustered with the reassortant strains isolated in Japan, Thailand and Australia and two other strains were phylogenetically close to the typical G2P[4] DS-1-like RVA. Nucleotide sequences of G1P[8] strains that belong to NSP4 gene form a separate cluster from G3P[8] DS-1-like rotaviruses detected in Thailand and Australia. The RVA alleles included in Rotarix and RotaTeq vaccine strains were clustered separately from the studied reassortant RVAs. On the grounds of phylogenetic analysis we assume a polyphyletic origin of reassortants between Wa- and DS-1-like strains. Mutation rates evaluated by Bayesian inference in clusters with reassortant RVA strains were 1.004Е-3 (VP7), 1.227E-3 (VP4), 3.909E-4 (VP6), and 4.014Е-4 (NSP4). Analysis of tMRCA showed relatively contemporary origin of alleles DS-1-like G1P[8] rotaviruses: VP7 - 1998 (G1-I) and 1981 (G1-II), VP4 - 1998, VP6 - 1994, NSP4 - 1979.</p></abstract><trans-abstract xml:lang="ru"><p>В работе дана молекулярная характеристика впервые обнаруженных на территории России реассортантных DS-1-подобных G1P[8]-штаммов ротавируса группы А (РВА), которые ранее были обнаружены в Японии и Таиланде. РВА G1P[8]-генотипа с DS-1-подобным “коротким” профилем РНК-ПААГ были идентифицированы у детей, госпитализированных с гастроэнтеритом в сезон 2013-2014 гг., когда их доля составила 2,6%. Филогенетический анализ был проведен на основе установленных нуклеотидных последовательностей 4 генов (VP7, VP8*(VP4), VP6 и NSP4). Нижегородские штаммы несли аллели G1-I и G1-II гена VP7, P[8]-3 гена VP4. По гену VP6 2 нижегородских образца кластеризовались с реассортантными штаммами, изолированными на территории Японии, Таиланда и Австралии, и 2 образца, филогенетически близкие к типичным G2P[4] DS-1-подобным штаммам. По гену NSP4 реассортантные G1P[8]-штаммы кластеризовались отдельно от G3P[8] DS-1-подобных штаммов РВА, изолированных в Австралии и Таиланде. Все исследованные штаммы по анализируемым генам кластеризовались отдельно от вакцинных штаммов Rotarix и RotaTeq. На основе проведенного филогенетического анализа сделан вывод о полифилетическом происхождении реассортантных штаммов. Скорость мутаций, оцененная на основе байесовского подхода в кластерах, включающих реассортантные штаммы, составила 1.004Е-3 (VP7), 1.227E-3 (VP4), 3.909E-4 (VP6), 4.014Е-4 (NSP4). Анализ tMRCA показал относительную современность аллелей реассортантов: VP7 - 1998 (G1-I) и 1981 (G1-II), VP4 - 1998, VP6 - 1994, NSP4 - 1979.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rotavirus</kwd><kwd>reassortant</kwd><kwd>phylogenetic analysis</kwd><kwd>Bayesian analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ротавирус</kwd><kwd>реассортант</kwd><kwd>филогенетический анализ</kwd><kwd>байесовский анализ</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Приказ Минздрава России от 21.03.14 № 125н "Об утверждении национального календаря профилактических прививок и календаря профилактических прививок по эпидемическим показаниям"</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Parashar U.D., Burton A., Lanata C., Boschi-Pinto C., Shibuya K., Steele D. et al. Global mortality associated with rotavirus disease among children in 2004. J. Infect. 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