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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">Vestnik dermatologii i venerologii</journal-id><journal-title-group><journal-title xml:lang="en">Vestnik dermatologii i venerologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник дерматологии и венерологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-4609</issn><issn publication-format="electronic">2313-6294</issn><publisher><publisher-name xml:lang="en">Rossijskoe Obschestvo Dermatovenerologov i Kosmetologov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">15827</article-id><article-id pub-id-type="doi">10.25208/vdv15827</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL STUDIES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>НАУЧНЫЕ 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">Determination of molecular types and resistance to macrolides in <italic>Treponema pallidum</italic> isolates isolated in the Russian Federation</article-title><trans-title-group xml:lang="ru"><trans-title>Определение молекулярных типов и резистентности к макролидам у изолятов <italic>Treponema pallidum</italic>, выделенных на территории Российской Федерации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5728-2139</contrib-id><contrib-id contrib-id-type="spin">6355-4699</contrib-id><name-alternatives><name xml:lang="en"><surname>Obraztsova</surname><given-names>Olga A.</given-names></name><name xml:lang="ru"><surname>Образцова</surname><given-names>Ольга Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>к.б.н.</p></bio><email>valeeva19@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-9700-2455</contrib-id><contrib-id contrib-id-type="spin">4770-8904</contrib-id><name-alternatives><name xml:lang="en"><surname>Lagun</surname><given-names>Kseniya M.</given-names></name><name xml:lang="ru"><surname>Лагун</surname><given-names>Ксения Михайловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>xobanaa@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0599-6305</contrib-id><contrib-id contrib-id-type="spin">1598-8595</contrib-id><name-alternatives><name xml:lang="en"><surname>Katunin</surname><given-names>Georgii L.</given-names></name><name xml:lang="ru"><surname>Катунин</surname><given-names>Георгий Леонидович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>к.м.н.</p></bio><email>g.katunin@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9957-4009</contrib-id><contrib-id contrib-id-type="spin">6600-3311</contrib-id><name-alternatives><name xml:lang="en"><surname>Shpilevaya</surname><given-names>Marina V.</given-names></name><name xml:lang="ru"><surname>Шпилевая</surname><given-names>Марина Валентиновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>к.б.н.</p></bio><email>aniram1970@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3967-8359</contrib-id><contrib-id contrib-id-type="spin">8806-8539</contrib-id><name-alternatives><name xml:lang="en"><surname>Nosov</surname><given-names>Nikita Y.</given-names></name><name xml:lang="ru"><surname>Носов</surname><given-names>Никита Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>к.б.н.</p></bio><email>nnosov@cnikvi.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">State Research Center of Dermatovenereology and Cosmetology</institution></aff><aff><institution xml:lang="ru">Государственный научный центр дерматовенерологии и косметологии</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-04-17" publication-format="electronic"><day>17</day><month>04</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-05-20" publication-format="electronic"><day>20</day><month>05</month><year>2024</year></pub-date><volume>100</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>52</fpage><lpage>58</lpage><history><date date-type="received" iso-8601-date="2023-09-26"><day>26</day><month>09</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2024-04-09"><day>09</day><month>04</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Obraztsova O.A., Lagun K.M., Katunin G.L., Shpilevaya M.V., Nosov N.Y.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Образцова О.А., Лагун К.М., Катунин Г.Л., Шпилевая М.В., Носов Н.Ю.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Obraztsova O.A., Lagun K.M., Katunin G.L., Shpilevaya M.V., Nosov N.Y.</copyright-holder><copyright-holder xml:lang="ru">Образцова О.А., Лагун К.М., Катунин Г.Л., Шпилевая М.В., Носов Н.Ю.</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-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vestnikdv.ru/jour/article/view/15827">https://vestnikdv.ru/jour/article/view/15827</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> The number of syphilis cases in the Russian Federation increased significantly in 2022. Control of heterogeneity of <italic>Treponema pallidum</italic> subtypes is important to monitor the emergence and spread of antibiotic-resistant strains</p> <p><bold>Aims.</bold> To determine molecular subtypes and resistance to macrolides in <italic>T. pallidum</italic> isolates isolated in the Russian Federation in 2022.</p> <p><bold>Methods.</bold> We analyzed DNA isolated from 49 samples of clinical material obtained from patients from dermatovenerological treatment and prevention facilities in three federal districts (CFD, SFD, SCFD) of the Russian Federation in 2022 with diagnoses of primary syphilis and secondary syphilis<italic>. T. pallidum </italic>DNA isolation and confirmation of the presence of genetic material were performed according to the existing algorithms. To search for genetic determinants of resistance to macrolides, a fragment of the 23S rRNA gene was analyzed. Primary decoding of nucleotide sequences was performed in Sequencing Analysis 5.3.1. Mega 11 program was used to align the analyzed fragments of target genes to <italic>T. pallidum</italic> reference sequences.</p> <p><bold>Results.</bold> In 2022, three subtypes of <italic>T. pallidum</italic> were identified in the territory of the represented federal districts of the Russian Federation: 14d/f, 14d/g, 14d/d with continued dominance of subtype 14d/f. The macrolide-resistant subtype 14d/d was identified in two federal districts, which is new for the Russian Federation.</p> <p><bold>Conclusions.</bold> The population of <italic>T. pallidum</italic> continues to expand in the Russian Federation, including the emergence of azithromycin-resistant strains. The data obtained confirm the need for continuous monitoring of circulating strains and may facilitate understanding of their geographic distribution.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> В 2022 г в Российской Федерации значительно выросло количество случаев заболевания сифилисом. Контроль гетерогенности субтипов <italic>T</italic><italic>reponema</italic><italic> </italic><italic>pallidum</italic> важен для надзора за появлением и распространением антибиотикорезистентных штаммов.</p> <p><bold>Цель исследования.</bold> Определить молекулярные субтипы и устойчивость к макролидам у изолятов <italic>T. pallidum</italic>,<italic> </italic>выделенных на территории Российской Федерации в 2022 г.</p> <p><bold>Методы.</bold> Анализировали ДНК, выделенную из 49 образцов клинического материала, полученного в 2022 г. от пациентов лечебно-профилактических учреждений дерматовенерологического профиля с диагнозами «первичный сифилис» и «вторичный сифилис», находящихся в трех федеральных округах Российской Федерации (Центральном, Сибирском и Северо-Кавказском). Выделение ДНК <italic>T. pallidum </italic>и подтверждение присутствия генетического материала проводили в соответствии с существующими алгоритмами. Для поиска генетических детерминант резистентности к макролидам анализировали фрагмент гена <italic>23S рРНК</italic>. Первичную расшифровку нуклеотидных последовательностей проводили в программе Sequencing Analysis 5.3.1. Для выравнивания анализируемых фрагментов целевых генов на референсные сиквенсы <italic>T. pallidum</italic> использовали программу Mega 11.</p> <p><bold>Результаты.</bold> В 2022 г. на территории представленных федеральных округов Российской Федерации идентифицированы три субтипа <italic>T. pallidum</italic> — 14d/f, 14d/g, 14d/d с продолжающимся доминированием субтипа 14d/f. В двух федеральных округах определен новый для Российской Федерации устойчивый к макролидам субтип 14d/d.</p> <p><bold>Заключение.</bold> На территории Российской Федерации продолжается расширение популяции<italic> T. pallidum</italic>, в том числе за счет появления азитромицин-устойчивых штаммов. Полученные данные подтверждают необходимость непрерывного мониторинга циркулирующих штаммов и могут облегчить понимание их географического распространения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Treponema pallidum</kwd><kwd>macrolides</kwd><kwd>mutation A2058G</kwd><kwd>subtype</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Treponema pallidum</kwd><kwd>макролиды</kwd><kwd>мутация A2058G</kwd><kwd>субтип</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Единая межведомственная информационно-статистическая система (ЕМИСС). [Edinaya mezhvedomstvennaya informacionno-statisticheskaya sistema (EMISS). (In Russ.)] URL: https://fedstat.ru/indicator/41709 (accessed: 20.09.2023).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Pillay A, Liu H, Chen CY, Holloway B, Sturm AW, Steiner B, et al. Molecular subtyping of Treponema pallidum subspecies pallidum. 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