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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">Journal of microbiology, epidemiology and immunobiology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of microbiology, epidemiology and immunobiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал микробиологии, эпидемиологии и иммунобиологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0372-9311</issn><issn publication-format="electronic">2686-7613</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">24</article-id><article-id pub-id-type="doi">10.36233/0372-9311-2016-2-9-15</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">A NOVEL APPROACH TO GENOTYPING OF HOSPITAL ISOLATES OF CLOSTRIDIUM DIFFICILE</article-title><trans-title-group xml:lang="ru"><trans-title>НОВЫЙ ПОДХОД К ГЕНОТИПИРОВАНИЮ ГОСПИТАЛЬНЫХ ИЗОЛЯТОВ CLOSTRIDIUM DIFFICILE</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Terletsky</surname><given-names>V. P.</given-names></name><name xml:lang="ru"><surname>Терлецкий</surname><given-names>В. П.</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 contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tyschenko</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Тыщенко</surname><given-names>В. И.</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 contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>O. B.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>О. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>I. I.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>И. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dzhavadov</surname><given-names>E. D.</given-names></name><name xml:lang="ru"><surname>Джавадов</surname><given-names>Э. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">All-Russian Research Institute of Genetics and Breeding of Agricultural Animals</institution></aff><aff><institution xml:lang="ru">Всероссийский НИИ генетики и разведения сельскохозяйственных животных</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">All-Russian Research Veterinary Institute of Poultry</institution></aff><aff><institution xml:lang="ru">Всероссийский научно-исследовательский ветеринарный институт птицеводства</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">All-Russian Research Institute of Plants Protection</institution></aff><aff><institution xml:lang="ru">Всероссийский НИИ защиты растений</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2016-04-28" publication-format="electronic"><day>28</day><month>04</month><year>2016</year></pub-date><volume>93</volume><issue>2</issue><issue-title xml:lang="ru"/><fpage>9</fpage><lpage>15</lpage><history><date date-type="received" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2016, Terletsky V.P., Tyschenko V.I., Novikova O.B., Novikova I.I., Dzhavadov E.D.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Терлецкий В.П., Тыщенко В.И., Новикова О.Б., Новикова И.И., Джавадов Э.Д.</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Terletsky V.P., Tyschenko V.I., Novikova O.B., Novikova I.I., Dzhavadov E.D.</copyright-holder><copyright-holder xml:lang="ru">Терлецкий В.П., Тыщенко В.И., Новикова О.Б., Новикова И.И., Джавадов Э.Д.</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://microbiol.crie.ru/jour/article/view/24">https://microbiol.crie.ru/jour/article/view/24</self-uri><abstract xml:lang="en"><p>Aim. Development of a novel approach in genotyping of Clostridium difficile and its testing on the example of 140 hospital isolates. Materials and methods. The approach is based on an idea of double digest and selective label (DDSL), used previously during genotyping of other bacterial pathogens. Selection of optimal enzymes for restriction of MluI and Mph1103I was carried out, condition of DDSL reaction execution were optimized. Results. Genotyping of C. difficile hospital isolates was carried out, index of strain discrimination was calculated, conclusions regarding possibilities of the method in elucidation of spread pathways and identification of infection sources were made. Conclusion. The developed method of genotyping has a number of advantages over the existing method and can be used to address issues in epidemiology of infections caused by C. difficile.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Разработка нового подхода в генотипировании Clostridium difficile и испытание его на примере 140 госпитальных изолятов. Материалы и методы. Подход основан на идее двойного расщепления и избирательного мечения (ДРИМ), использованного ранее при генотипировании других бактериальных патогенов. Был осуществлен подбор оптимальных ферментов рестрикции MluI и Mph1103I, оптимизированы условия проведения реакции ДРИМ. Результаты. Проведено генотипирование госпитальных изолятов C.difficile, рассчитан индекс дискриминации штаммов, сделаны выводы о возможностях метода в выяснении путей распространения и идентификации источников инфекции. Заключение. Разработанный метод генотипирования имеет ряд преимуществ над существующими методами и может применяться в решении вопросов эпидемиологии инфекций, вызванных C.difficile.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Clostridium difficile</kwd><kwd>genome DNA</kwd><kwd>bacteria</kwd><kwd>Clostridium difficile</kwd><kwd>genotyping</kwd><kwd>molecular epidemiology</kwd><kwd>restriction enzymes</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>геномная ДНК</kwd><kwd>бактерии</kwd><kwd>генотипирование</kwd><kwd>молекулярная эпидемиология</kwd><kwd>ферменты рестрикции</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Лобзин Ю.В., Захаренко С.М., Иванов Г.А. Современные представления об инфекции Clostridium difficile. Клиническая микробиология и антимикробная химиотерапия. 2002, 4 (3): 200-232.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Barlett J.C. 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