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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2023-2-112-119</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1828</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Выявление фагоиндуцируемых мобильных генетических элементов в штаммах Vibrio cholerae О1 биовара Эль Тор</article-title><trans-title-group xml:lang="en"><trans-title>Detection of Phage-Induced Mobile Genetic Elements in Strains of Vibrio cholerae O1 Biovar El Tor</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4366-0562</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Заднова</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Zadnova</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2355-7018</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Плеханов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Plekhanov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9779-166X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Спирина</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Spirina</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Швиденко</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shvidenko</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6458-3725</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савельев</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Savel’ev</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035</p></bio><email xlink:type="simple">stavnipchi@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФКУН «Российский научно-исследовательский противочумный институт «Микроб»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Research Anti-Plague Institute “Microbe”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФКУЗ «Ставропольский научно-исследовательский противочумный институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Stavropol Research Anti-Plague Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>112</fpage><lpage>119</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Заднова С.П., Плеханов Н.А., Спирина А.Ю., Швиденко И.Г., Савельев В.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Заднова С.П., Плеханов Н.А., Спирина А.Ю., Швиденко И.Г., Савельев В.Н.</copyright-holder><copyright-holder xml:lang="en">Zadnova S.P., Plekhanov N.A., Spirina A.Y., Shvidenko I.G., Savel’ev V.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.microbe.ru/jour/article/view/1828">https://journal.microbe.ru/jour/article/view/1828</self-uri><abstract><p>Приобретение новых мобильных генетических элементов способствует генетическому разнообразию штаммов Vibrio cholerae. Важная роль в данном процессе принадлежит генетическому материалу, получаемому от фагов. Цель работы – выявление фагоиндуцируемых PLE-островов в штаммах V. cholerae О1-серогруппы и определение устойчивости изолятов, содержащих и не имеющих данные мобильные генетические элементы, к литическому действию бактериофага холерного диагностического эльтор. Материалы и методы. Использовали нуклеотидные последовательности полных геномов токсигенных и нетоксигенных штаммов V. cholerae О1, представленных в NCBI GenBank. Биоинформационный анализ проводили с применением алгоритма BLAST, MEGA X (или BioEdit v. 7.0.9.0). Тест с фагами ставили по методу А. Грациа. Результаты и обсуждение. При анализе 39 токсигенных штаммов, завезенных на территорию РФ и сопредельных стран, выявлен штамм V. cholerae О1 классического биовара, содержащий остров PLE5, и 13 штаммов V. cholerae О1 биовара Эль Тор, включающих остров PLE4. В нетоксигенных штаммах PLE-острова не обнаружены. Показано, что штаммы с PLE4 относятся к геновариантам V. cholerae О1 биовара Эль Тор и имеют аллель гена ctxB1. Изоляты с данным мобильным элементом вызвали единичные случаи (1994–1999 гг.), а также вспышки холеры на территории РФ (1993–1994 гг., 1998 г. – Дагестан; 1993 г. – Татарстан) и Украины (1994–1995 гг.). Высказано предположение, что, возможно, присутствие острова PLE4 вносит определенный вклад в обеспечение устойчивости штаммов V. cholerae О1 биовара Эль Тор к холерному диагностическому фагу эльтор (выявлено 55,6 % фагоустойчивых изолятов), но существуют и другие, пока не выявленные, механизмы. Таким образом, получены данные о присутствии новых мобильных генетических элементов в геноме ранее завезенных токсигенных штаммов V. cholerae О1 биовара Эль Тор, что расширяет сведения об их генетической организации. </p></abstract><trans-abstract xml:lang="en"><p>The acquisition of new mobile genetic elements contributes to the genetic diversity of Vibrio cholerae strains. An important role in this process belongs to the genetic material obtained from phages. The aim of this work was to identify phage-induced PLE islands in strains of V. cholerae O1 serogroup and to determine the resistance of isolates with and without those mobile genetic elements to the lytic activity of the diagnostic cholera El Tor bacteriophage. Materials and methods. Whole genomes nucleotide sequences of toxigenic and non-toxigenic V. cholerae O1 strains presented in the NCBI GenBank were used for the work. Bioinformatic analysis was performed using the BLAST algorithm, MEGA X (or BioEdit v. 7.0.9.0). The test with phages was carried out according A. Gratia technique. Results and discussion. The analysis of 39 toxigenic strains imported to the territory of the Russian Federation and neighboring countries has revealed one strain of V. cholerae O1 of the classical biovar containing the PLE5 island, and 13 strains of V. cholerae O1 of the El Tor biovar containing the PLE4 island. PLE islands have not been found in non-toxigenic strains. It is shown that strains with PLE4 belong to V. cholerae O1 genovariants of the El Tor biovar and have the ctxB1 gene allele. Isolates with this mobile element caused sporadic cases of the disease in 1994–1999, as well as cholera outbreaks in the Russian Federation (in 1993–1994, in 1998 – Dagestan, and 1993 – Tatarstan) and Ukraine (1994–1995). It has been suggested that, perhaps, the presence of the PLE4 island makes a certain contribution to the resistance of V. cholerae O1 strains of the El Tor biovar to the diagnostic cholera El Tor phage (55.6 % of phage-resistant isolates were detected), but there are other mechanisms that have not yet been identified. Thus, the data on the presence of new mobile genetic elements in the genome of earlier imported toxigenic strains of V. cholerae O1, biovar El Tor have been obtained, which expands information about their genetic organization.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Vibrio cholerae</kwd><kwd>PLE-острова</kwd><kwd>лизабельность диагностическим холерным фагом эльтор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Vibrio cholerae</kwd><kwd>PLE islands</kwd><kwd>lysis by diagnostic cholera El Tor phage</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Nair G.B., Faruque S.M., Bhuiyan N.A., Kamruzzaman M., Siddique A.K., Sack D.A. New variants of Vibrio cholerae O1 biotype El Tor with attributes of the classical biotype from hospitalized patients with acute diarrhea in Bangladesh. J. Clin. Microbiol. 2002; 40(9):3296–9. 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