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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">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">498</article-id><article-id pub-id-type="doi">10.36233/0372-9311-2019-6-72-78</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Detection of enterotoxigenic strains <italic>Staphylococcus aureus</italic>, producing SEC and SEI, isolated in patients with pneumonia, sepsis and burns</article-title><trans-title-group xml:lang="ru"><trans-title>Обнаружение энтеротоксигенных штаммов <italic>Staphylococcus aureus</italic>, продуцирующих SEС и SEI, выделенных у больных с пневмонией, сепсисом и ожогами</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5111-7888</contrib-id><name-alternatives><name xml:lang="en"><surname>Fluer</surname><given-names>F. S.</given-names></name><name xml:lang="ru"><surname>Флуер</surname><given-names>Ф. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Fedor S. Fluer, Candidate of Biological Sciences, Senior Researcher, Laboratory of Molecular Fundamentals of Pathogenicity, Staphylococcal Infections Group, Moscow, 123098, Russia</p></bio><bio xml:lang="ru"><p>Флуер Федор Семенович, канд. биол. наук, старший научный сотрудник лаборатории молекулярных основ патогенности, группы стафилококковых инфекций, 123098, г. Москва, Россия</p></bio><email>fluerfs@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2344-8532</contrib-id><name-alternatives><name xml:lang="en"><surname>Panova</surname><given-names>Ya. A.</given-names></name><name xml:lang="ru"><surname>Панова</surname><given-names>Я. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow, 123098, Russia</p></bio><bio xml:lang="ru"><p>123098, г. Москва, Россия</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5519-5285</contrib-id><name-alternatives><name xml:lang="en"><surname>Azanova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Азанова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow, 123098, Russia</p></bio><bio xml:lang="ru"><p>123098, г. Москва, Россия</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0160-7547</contrib-id><name-alternatives><name xml:lang="en"><surname>Mamycheva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Мамычева</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow, 123098, Russia</p></bio><bio xml:lang="ru"><p>123098, г. Москва, Россия</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal State Budgetary Institution «National Research Center for Epidemiology and Microbiology named after honorary academician N.F. Gamalei» of the Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный исследовательский центр эпидемиологии и микробиологии имени почётного академика Н.Ф. Гамалеи» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-16" publication-format="electronic"><day>16</day><month>12</month><year>2019</year></pub-date><volume>96</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>72</fpage><lpage>78</lpage><history><date date-type="received" iso-8601-date="2019-12-15"><day>15</day><month>12</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-12-15"><day>15</day><month>12</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Fluer F.S., Panova Y.A., Azanova A.A., Mamycheva E.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Флуер Ф.С., Панова Я.А., Азанова А.А., Мамычева Е.В.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Fluer F.S., Panova Y.A., Azanova A.A., Mamycheva E.V.</copyright-holder><copyright-holder xml:lang="ru">Флуер Ф.С., Панова Я.А., Азанова А.А., Мамычева Е.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://microbiol.crie.ru/jour/article/view/498">https://microbiol.crie.ru/jour/article/view/498</self-uri><abstract xml:lang="en"><p><bold>Aim. </bold>To identify the frequency of occurrence of staphylococcal enterotoxins of the SEC and SEI type produced by Staphylococcus aureus strains isolated from patients with different nosology. As you know, the infection process in them proceeds with severe intoxication without vomiting and intestinal disorders.</p> <p><bold>Materials and methods. </bold>79 strains were studied (43 were isolated in case of pneumonia, 13 - in burns, 11 - in sepsis) <italic>S. aureus </italic>in the presence of SES and SEI using enzymelinked immunosorbent assay (ELISA).</p> <p><bold>Results. </bold>It was found that 48.3% of S. aureus strains isolated from patients with pneumonia produced SEC and 72.1% - SEI. The frequency of occurrence of S. aureus strains producing SEC and SEI isolated in patients with burn infections was 23.0 and 15.4%, respectively. 36.4% of staphylococcal strains isolated in patients with sepsis produced SEC, 45.5% - SEI.</p> <p><bold>Discussion. </bold>It was found that the proportion of S. aureus cultures producing SEC enterotoxins during sepsis is significantly higher than the strains producing SEB (5.4%) and much smaller than SEA (75.6%). A high percentage of SEI-positive strains was found compared to strains that produce the classic enterotoxins SEA, SEB and SEC isolated from pneumonia. In burn infections, the proportions of strains producing SEC and SEI were 15.4 and 23.0%, respectively, which is significantly lower than SEA (92.9%).</p> <p><bold>Conclusion. </bold>The data obtained indicate the need to identify staphylococcus strains that produce both classic and newly discovered enterotoxins, which are crucial virulence factors leading to lethal sepsis, infectious endocarditis and toxic shock syndrome to eliminate them.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель </bold>– выявить частоту встречаемости стафилококковых энтеротоксинов типа SEC и SEI, продуцируемых штаммами <italic>Staphylococcus aureus</italic>, выделенными от больных с различной нозологией. Как известно, инфекционный процесс у них протекает с выраженной интоксикацией без рвоты и кишечных расстройств.</p> <p><bold>Материалы и методы. </bold>Исследовано 79 штаммов (43 штамма выделенных при пневмонии, 13 – у ожоговых больных, 11 – при сепсисе) <italic>S. aureus </italic>на наличие SEС и SEI методом иммуноферментного анализа.</p> <p><bold>Результаты. </bold>Установлено, что 48,3% штаммов <italic>S. aureus</italic>, выделенных у больных пневмонией, продуцировали SEC и 72,1% – SEI. Частота встречаемости штаммов S. aureus, продуцирующих SEC и SEI, выделенных у больных при ожоговых инфекциях, составила 23,0 и 15,4% соответственно. 36,4% штаммов стафилококков, выделенных у больных с сепсисом, продуцировали SEC, 45,5% – SEI.</p> <p><bold>Обсуждение. </bold>Было выявлено, что доля культур <italic>S. aureus</italic>, продуцирующих энтеротоксины SEC, при сепсисе значительно выше, чем штаммов – продуцентов SEB (5,4%) и намного меньше, чем SEA (75,6%). Обнаружен высокий процент SEI-положительных штаммов по сравнению со штаммами, которые продуцируют классические энтеротоксины SEA, SEB и SEC, выделенными при пневмонии. При ожоговых инфекциях доли штаммов, продуцирующих SEC и SEI, составили 15,4 и 23,0% соответственно, что значительно ниже, чем SEA (92,9%).</p> <p><bold>Заключение. </bold>Полученные данные свидетельствуют о необходимости выявления штаммов стафилококков, продуцирующих как классические, так и вновь открытые энтеротоксины, которые являются решающими факторами вирулентности, приводящими к летальному сепсису, инфекционному эндокардиту и синдрому токсического шока, с целью их элиминации.</p></trans-abstract><kwd-group xml:lang="en"><kwd>staphylococcus</kwd><kwd>enterotoxins</kwd><kwd>pneumonia</kwd><kwd>sepsis</kwd><kwd>burn infection</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>стафилококк</kwd><kwd>энтеротоксины</kwd><kwd>пневмония</kwd><kwd>сепсис</kwd><kwd>ожоговая инфекция</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Reddy P.N., Srirama K., Dirisala V.R. 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