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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">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1814-6023-2025-22-1-7-16</article-id><article-id custom-type="elpub" pub-id-type="custom">vestim-1010</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>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Анализ генетической структуры изолятов Acinetobacter baumannii, выделенных от пациентов отделений хирургии и реанимации медучреждений разных регионов Республики Беларусь</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the genetic structure of Acinetobacter baumannii isolates, isolated from patients of the surgery and resuscitation departments of medical institutions in different regions of the Republic of Belarus</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1726-1031</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Янович</surname><given-names>О. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Yanovich</surname><given-names>O. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Янович Ольга Олеговна – канд. биол. наук, заведующий лабораторией</p><p>ул. Филимонова, 23, 220114, г. Минск</p></bio><bio xml:lang="en"><p>Olga O. Yanovich ‒ Ph. D. (Biol.), Head of the Laboratory</p><p>23, Filimonov Str., 220114, Minsk</p></bio><email xlink:type="simple">oyanov74@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титов</surname><given-names>Л. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Titov</surname><given-names>L. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Титов Леонид Петрович – академик, д-р мед. наук, профессор</p></bio><bio xml:lang="en"><p>Leonid P. Titov ‒ Academician, D. Sc. (Med.), Professor</p><p> </p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Республиканский научно-практический центр эпидемиологии и микробиологии</institution></aff><aff xml:lang="en"><institution>Republican Scientific and Practical Center for Epidemiology and Microbiology</institution></aff></aff-alternatives><aff xml:lang="ru" id="aff-2"><institution>Республиканский научно-практический центр эпидемиологии и микробиологииИ</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>27</day><month>02</month><year>2025</year></pub-date><volume>22</volume><issue>1</issue><fpage>7</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Янович О.О., Титов Л.П., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Янович О.О., Титов Л.П.</copyright-holder><copyright-holder xml:lang="en">Yanovich O.O., Titov L.P.</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://vestimed.belnauka.by/jour/article/view/1010">https://vestimed.belnauka.by/jour/article/view/1010</self-uri><abstract><p>Бактерии Acinetobacter baumannii вызывают широкий спектр локальных и системных гнойно-воспалительных процессов. Наибольшее клиническое значение приобрели высокорезистентные к антибиотикам генетические варианты бактерий, вызывающие заболевания, ассоциированные с оказанием медицинской помощи, что представляет существенную проблему здравоохранения.</p><p>Исследовано 53 изолята A. baumannii, выделенных от пациентов, которые проходили лечение в отделениях хирургии и интенсивной терапии учреждений здравоохранения страны. Молекулярно-генетическими методами – мультилокусным сиквенс-типированием и ПЦР реального времени ‒ установлены спектр сиквенс-типов (ST) и клональных комплексов (СС), а также носительство генов резистентности бета-лактамаз расширенного типа, металлобета-лактамаз и сериновых карбапенемаз.</p><p>Исследованные методом мультилокусного сиквенс-типирования изоляты A. baumannii принадлежали к 4 клональным комплексам – СС109, СС92, СС944 и СС110. Генетическая структура доминирующего СС109 была представлена сиквенс-типами ST2550, ST231, ST441, а структура СС92 ‒ ST2168, ST450 и ST195. К минорным СС относились СС944 и СС110.</p><p>С помощью филогенетического анализа установлено, что предковым сиквенс-типом кластера 1 является ST229, который эволюционирует с образованием сиквенс-типов ST195, ST450, ST2563 и ST1103. Кластер 2 формируется на основе ST2182, эволюционирующего с образованием двух ветвей ‒ ST2564 и ST441.</p><p>Анализ взаимосвязей ST и CC A. baumannii в зависимости от региона страны показал, что чаще всего изоляты, относящиеся к ST2550 (CC109), распространены в Гомельской, Могилевской, Минской и Гродненской областях, а изоляты ST231 (CC109) ‒ в Витебской, Гродненской и Могилевской областях.</p></abstract><trans-abstract xml:lang="en"><p> A. baumannii bacteria are gram-negative, catalase-positive, oxidase-negative, non-fermenting coccobacilli that cause a wide range of local and systemic purulent-inflammatory processes. Genetic variants of bacteria that are highly resistant to antibiotics and cause healthcare-associated infections have acquired the greatest clinical significance. Multidrugresistant bacteria are widespread in medical institutions in different countries and pose a significant public health problem.</p><p>We studied 53 isolates of A. baumannii isolated from patients in intensive care wards and surgical departments. Molecular genetic methods – multilocus sequencing-typing and real-time PCR – established the spectrum of sequence types (ST) and clonal complexes (CC), as well as carriers of extended type beta-lactamase resistance genes, metallo-beta-lactamases and serine carbapenemase.</p><p>The isolates studied by the MLST method belonged to 4 clonal complexes: CC109, CC92, CC944 and CC110. The genetic structure of the dominant CC109 is represented by the following sequence types – ST2550, ST231, ST441. CC92 united ST168, ST450 and ST195. The minor CCs included CC944 and CC110.</p><p>The phylogenetic analysis has established that the ancestral ST of cluster I is ST229, evolving to form sequence types ST195, ST450, as well as ST2563 and ST1103. Cluster 2 is formed on the basis of ST2182 evolving with the formation of two branches ST2564 and ST441.</p><p>The analysis of the relationships between STs and CCs depending on the region of the country showed that isolates related to ST2550 (CC109) are more common in the Gomel, Mogilev, Minsk and Grodno regions, and ST231 (CC109) isolates are more common in the Vitebsk, Grodno and Mogilev regions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Acinetobacter baumannii</kwd><kwd>типирование</kwd><kwd>сиквенс-типы</kwd><kwd>бета-лактамазы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Acinetobacter baumannii</kwd><kwd>typing</kwd><kwd>sequence types</kwd><kwd>beta-lactamase</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">Baumann, P. Isolation of Acinetobacter from soil and water / P. 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