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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</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">10.29235/1561-8323-2022-66-3-330-337</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1071</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>МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICINE</subject></subj-group></article-categories><title-group><article-title>Роль клеток системы мононуклеарных фагоцитов и регуляторных Т-лимфоцитов в формировании состояния иммуносупрессии при сепсисе</article-title><trans-title-group xml:lang="en"><trans-title>Role of the cells of the system of mononuclear phagocytes and regulatory T-lymphocytes in the formation of the state of immunosuppression in sepsis</trans-title></trans-title-group></title-group><contrib-group><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, заведующий лабораторией</p><p>ул. Филимонова, 23, 220114, Минск</p></bio><bio xml:lang="en"><p>Titov Leonid P. – Academician, D. Sc. (Medicine), Professor, Head of the Laboratory</p><p>23, Filimonov Str., 220114, Minsk</p></bio><email xlink:type="simple">leonidtitov@tut.by</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>Трусевич</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Trusevich</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трусевич Маргарита Олеговна – науч. сотрудник</p><p>ул. Филимонова, 23, 220114, Минск</p></bio><bio xml:lang="en"><p>Trusevich Margarita O. – Researcher</p><p>23, Filimonov Str., 220114, Minsk</p></bio><email xlink:type="simple">m.trusevich@tut.by</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>Горбич</surname><given-names>Ю. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbich</surname><given-names>Yu. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горбич Юрий Леонидович – канд. мед. наук, доцент, заведующий кафедрой</p><p>ул. П. Бровки, 3/3, 220013, Минск</p></bio><bio xml:lang="en"><p>Gorbich Yury L. – Ph. D. (Medicine), Associate Professor, Head of the Department</p><p>3/3, P. Brovka Str., 220013, Minsk</p></bio><email xlink:type="simple">y.gorbich@gmail.com</email><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 Research and Practical Center for Epidemiology and Microbiology</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусская медицинская академия последипломного образования</institution></aff><aff xml:lang="en"><institution>Belarusian Medical Academy of Postgraduate Education</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>01</day><month>07</month><year>2022</year></pub-date><volume>66</volume><issue>3</issue><fpage>330</fpage><lpage>337</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Титов Л.П., Трусевич М.О., Горбич Ю.Л., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Титов Л.П., Трусевич М.О., Горбич Ю.Л.</copyright-holder><copyright-holder xml:lang="en">Titov L.P., Trusevich M.O., Gorbich Y.L.</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://doklady.belnauka.by/jour/article/view/1071">https://doklady.belnauka.by/jour/article/view/1071</self-uri><abstract><p>Изучено изменение относительного и абсолютного содержания в крови пациентов с сепсисом и септическим шоком субпопуляций моноцитов, дендритных клеток, миелоидных супрессорных клеток, регуляторных Т-лимфоцитов на 3–4 день от постановки диагноза с целью оценки формирования стадии иммуносупрессии. Обследовано 33 пациента с сепсисом (19 мужчин и 14 женщин, возраст 57,1 ± 19,9 лет) и 6 пациентов с септическим шоком (2 мужчин и 4 женщины, возраст 49,3 ± 19,6 лет). Контрольная группа включала 30 здоровых доноров. Субпопуляции моноцитов, дендритных клеток, миелоидных супрессорных клеток и Treg-клеток определяли методом проточной цитометрии. Выявлено достоверное снижение экспрессии HLA-DR на моноцитах, снижение относительного содержания классических моноцитов, миелоидных и плазмоцитоидных дендритных клеток, увеличение процентного содержания промежуточных моноцитов и Г–МЛСК CD15+, увеличение абсолютного содержания Tregклеток у пациентов с сепсисом и септическим шоком. Выявленные функциональные дефекты и сдвиги в составе популяции лейкоцитов указывают на развитие стадии иммуносупрессии у пациентов с сепсисом.</p></abstract><trans-abstract xml:lang="en"><p>Sepsis still represents one of the leading causes of death in hospitalized patients worldwide, and its incidence is increasing. Changes in the relative and absolute blood levels of monocytes, dendritic cells, myeloid suppressor cells, and regulatory T-lymphocytes in the blood of patients with sepsis and septic shock were studied on the 3rd–4th day after diagnosis in order to identify the stage of immunosuppression. 33 patients with sepsis (19 men and 14 women, age 57.1 ± 19.9 years) and 6 patients with septic shock (2 men and 4 women, age 49.3 ± 19.6 years) were examined. The control group included 30 healthy donors. Subpopulations of monocytes, dendritic cells, myeloid suppressor cells, and Treg cells were determined by flow cytometry. A significant decrease in HLA-DR expression on monocytes, a decrease in the relative content of classical monocytes, myeloid and plasmacytoid dendritic cells, an increase in the percentage of intermediate monocytes and G-MLSC CD15+, an increase in the absolute content of Treg cells in patients with sepsis and septic shock were revealed. The revealed functional defects and shifts in the composition of the leukocyte population indicate the development of the stage of immunosuppression in patients with sepsis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>моноциты</kwd><kwd>дендритные клетки</kwd><kwd>миелоидные супрессорные клетки</kwd><kwd>Treg-клетки</kwd><kwd>сепсис</kwd><kwd>септический шок</kwd></kwd-group><kwd-group xml:lang="en"><kwd>monocytes</kwd><kwd>dendritic cells</kwd><kwd>myeloid suppressor cells</kwd><kwd>Treg cells</kwd><kwd>sepsis</kwd><kwd>septic shock</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">The global burden of sepsis: barriers and potential solutions / K. E. Rudd [et al.] // Crit. Care. – 2018. – Vol. 22. – Art. 232. https://doi:10.1186/s13054-018-2157-z</mixed-citation><mixed-citation xml:lang="en">Rudd K. 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