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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">13265</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">DIFFERENCES IN PATTERN OF PATHOGENICITY GENES IN ESCHERICHIA COLI STRAINS PRODUCING SHIGA-LIKE TOXIN</article-title><trans-title-group xml:lang="ru"><trans-title>РАЗЛИЧИЯ ПО НАБОРУ ГЕНОВ ПАТОГЕННОСТИ У ШТАММОВ ESCHERICHIA COLI, ПРОДУЦИРУЮЩИХ ШИГА-ПОДОБНЫЕ ТОКСИНЫ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shabanova</surname><given-names>N. A</given-names></name><name xml:lang="ru"><surname>Шабанова</surname><given-names>Н. А</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bondarenko</surname><given-names>V. M</given-names></name><name xml:lang="ru"><surname>Бондаренко</surname><given-names>В. М</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Gamaleya Research Institute of Epidemiology and Microbiology, Moscow, Russia</institution></aff><aff><institution xml:lang="ru">НИИ эпидемиологии и микробиологии им. Н.Ф.Гамалеи, Москва</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2009-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2009</year></pub-date><volume>86</volume><issue>5</issue><issue-title xml:lang="en">NO5 (2009)</issue-title><issue-title xml:lang="ru">№5 (2009)</issue-title><fpage>4</fpage><lpage>8</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 ©; 2009, Shabanova N.A., Bondarenko V.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2009, Шабанова Н.А., Бондаренко В.М.</copyright-statement><copyright-year>2009</copyright-year><copyright-holder xml:lang="en">Shabanova N.A., Bondarenko V.M.</copyright-holder><copyright-holder xml:lang="ru">Шабанова Н.А., Бондаренко В.М.</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/13265">https://microbiol.crie.ru/jour/article/view/13265</self-uri><abstract xml:lang="en"><p>Aim. The detection by PCR of virulence markers in clinical strains of Escherichia coli strains producing the shiga-like toxin. Materials and methods . Thirty-four strains of STEC isolated from patients with acute intestinal infection were studied. PCR with primers to following 10 genes of pathogenicity: rfbE, eaeA, iha, saa, stx1, stx2, cdt, cubA, ehx and espP was utilized. Susceptibility of isolated to antibiotics was determined. Presence of class I integrons in bacterial cells was assessed. Results . rfbE gene coding antigen of serogroup O157 was detected in 31 out of 34 isolates. Twenty-three (74.2%) strains of E.coli O157 had typical pattern of pathogenicity genes (rfbE, eaeA, stx1, stx2, ehx, and espP). In 12 out of 23 cultures (52.2%) sequence of iha gene was detected. Presence of cdt genes was revealed only in 2 clonical isolates belonging to serogroup O157 isolated in Moscow. Two out of 11 strains isolated in Tula region did not have rfbE and eaeA sequences but had sequences saa and subA, which were absent in other studied strains of STEC. Genes of class I integrons were not found in all studied strains although some of them were resistant to sulfonamides, tetracyclines, and aminoglycosides. Conclusion . Heterogeneity in pattern of pathogenicity genes was demonstrated in E.coli producing shiga-like toxin that points to circulation of different cultures among patients with acute intestinal infection, which is necessary to consider during analysis of clinical isolates.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Выявление с помощью ПЦР маркеров вирулентности у клинических штаммов Escherichia coli, продуцирующих шига-подобный токсин. Материалы и методы. Исследовано 34 штамма STEC, изолированных при острой кишечной инфекции. Использован метод ПЦР с праймерами к 10 генам патогенности: rfbЕ, eaeА, iha, saa, stx1, stx2, cdt, subA, ehx и espP. Составлена антибиотикограмма изолятов. Изучено наличие в бактериальных клетках интегронов I класса. Результаты. У 31 из 34 изолятов обнаружен rfbЕ ген, контролирующий синтез антигена серогруппы O157. Типичным набором генов патогенности (rfbE, еаеА, stx1,2, ehx и espP) обладали 23 штамма E.coli О157 (74,2% случаев). У 12 из этих 23 культур (52,2%) выявлена последовательность iha гена. Наличие сdt генов обнаружено только у 2 клинических изолятов серогруппы О157, выделенных в Москве. Два из 11 штаммов, изолированных на территории Тульской области, не имели rfbE и еаеА последовательностей, но обладали saa и subA, отсутствующими у остальных исследуемых штаммов STEC. Гены интегронов I класса не были обнаружены ни у одного из протестированных штаммов, хотя некоторые из них обла д а ли устойчивостью к сульфаниламидам, препаратам групп тетрациклинов и аминогликозидов. Заключение. Показана гетерогенность по составу генов патогенности у штаммов E.coli, продуцирующих шига-подобные токсины, что свидетельствует о циркуляции среди больны х острыми кишечными инфекциями различных культур, в том числе и не относящихся к серогруппе О157, что необходимо учитывать при анализе клинических изолятов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>shiga-like toxin</kwd><kwd>Escherichia coli</kwd><kwd>PCR</kwd><kwd>pathogenicity genes</kwd><kwd>identification</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>шига-подобный токсин</kwd><kwd>ПЦР</kwd><kwd>гены патогенности</kwd><kwd>типирование</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Бондаренко В.М., Шабанова Н.А. Инфекции, вызываемые энтерогеморрагическими эшерихиями. Вет.патология. 2004, 4 (11): 60-68.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Воробьев А.А., Бондаренко В.М., Шабанова Н.А. и др. 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