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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="brief-report" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Immunology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Immunology</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский иммунологический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1028-7221</issn><issn publication-format="electronic">2782-7291</issn><publisher><publisher-name xml:lang="en">Russian Society of Immunology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">17215</article-id><article-id pub-id-type="doi">10.46235/1028-7221-17215-IOI</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Short Communication</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Indexes of innate immunity in patients with abdominal sepsis with different outcomes</article-title><trans-title-group xml:lang="ru"><trans-title>Показатели врожденного иммунитета у больных абдоминальным сепсисом с различным исходом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Osikov</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Осиков</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Head, Department of Pathophysiology, Head of the Department for Scientific and Innovative Work; Head, Department of Research</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, заведующий кафедрой патофизиологии, начальник управления по научной и инновационной работе; начальник отдела научной работы</p></bio><email>ritkaboyko@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konashov</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Конашов</surname><given-names>А. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Associate Professor, Department of Pathophysiology; Deputy Chief Physician for the Medical Unit, Anesthesiologist-Intensive Care</p></bio><bio xml:lang="ru"><p>к.м.н., доцент кафедры патофизиологии; заместитель главного врача по лечебной части, врач<bold><italic> </italic></bold>– анестезиолог-реаниматолог высшей категории</p></bio><email>ritkaboyko@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Boyko</surname><given-names>Margarita S.</given-names></name><name xml:lang="ru"><surname>Бойко</surname><given-names>Маргарита Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Associate Professor, Department of Pathophysiology</p></bio><bio xml:lang="ru"><p>к.м.н., доцент кафедры патофизиологии</p></bio><email>ritkaboyko@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gusev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Гусев</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant Professor, Department of Pathophysiology; Anesthesiologist-Intensive Care</p></bio><bio xml:lang="ru"><p>ассистент кафедры патофизиологии; врач<bold><italic> </italic></bold>– анестезиолог-реаниматолог</p></bio><email>ritkaboyko@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konashov</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Конашов</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant Professor, Department of Pathophysiology; Trainee Physician, Intensive Care Unit</p></bio><bio xml:lang="ru"><p>ассистент кафедры патофизиологии; врач-стажер отделения реанимации и интенсивной терапии</p></bio><email>ritkaboyko@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">South Ural State Medical University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Южно-Уральский государственный медицинский университет»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Chelyabinsk Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Челябинская областная клиническая больница»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">City Clinical Hospital No. 8</institution></aff><aff><institution xml:lang="ru">ГАУЗ ОЗП «Городская клиническая больница № 8 г. Челябинск»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-07-09" publication-format="electronic"><day>09</day><month>07</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-09-18" publication-format="electronic"><day>18</day><month>09</month><year>2025</year></pub-date><volume>28</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>673</fpage><lpage>680</lpage><history><date date-type="received" iso-8601-date="2025-04-01"><day>01</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-05-25"><day>25</day><month>05</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Osikov M.V., Konashov A.G., Boyko M.S., Gusev A.V., Konashov V.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Осиков М.В., Конашов А.Г., Бойко М.С., Гусев А.В., Конашов В.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Osikov M.V., Konashov A.G., Boyko M.S., Gusev A.V., Konashov V.A.</copyright-holder><copyright-holder xml:lang="ru">Осиков М.В., Конашов А.Г., Бойко М.С., Гусев А.В., Конашов В.А.</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://rusimmun.ru/jour/article/view/17215">https://rusimmun.ru/jour/article/view/17215</self-uri><abstract xml:lang="en"><p>Innate immunity plays a critical role in early recognition and response to pathogens, and its study in abdominal sepsis (AS) is important for pathogenesis, early diagnosis, prognosis, and therapeutic strategy. The aim of our study was to search for indices of innate immunity in the dynamics of AS dependent on its clinical outcomes. The study was conducted in a group of 64 patients with AS aged 32-82 years, who were divided in two groups: (1) 46 patients with a favorable outcome, and (2) 18 cases with a fatal outcome. The studies were conducted on days 1, 3, and 7. The total number of leukocytes was examined using a Sysmex XT- 1800i/XT-2000i hematology analyzer (Japan); functional activity of neutrophils was measured by phagocytosis activity and intensity, and oxygen–dependent metabolism. The program “Statistica 10.0 for Windows” was used for statistical evaluation. It was found that, in AS patients, the number of metamyelocytes, rod-shaped, segmented neutrophils increases in the blood within 1-7 days of follow-up, regardless of clinical outcome; in cases of negative outcome of AS, neutrophilic leukocytosis is more pronounced, and the number of monocytes and eosinophils increases. In patients with AS, regardless of the outcome, the absorption capacity of blood neutrophils increases, along with increased oxygen-dependent metabolism in spontaneous mode, and its inhibition in induced mode. Inn cases of unfavorable outcome of AS, we observed elevation of absorption capacity of blood neutrophils on days 1-7 of follow-up, along with inhibition of oxygen-dependent neutrophil metabolism in spontaneous and induced modes, mainly, on days 3 and 7 of follow-up.</p></abstract><trans-abstract xml:lang="ru"><p>Врожденный иммунитет играет критическую роль в раннем распознавании и реагировании на патогены, его изучение при абдоминальном сепсисе (АС) имеет значение для патогенеза, ранней диагностики, прогноза, терапевтической стратегии. Цель – исследовать показатели врожденного иммунитета в динамике АС с различным исходом. Исследование проведено на 64 больных с АС в возрасте 32-82 лет, которых разделили на группы: группа 1 (n = 46) с благоприятным исходом и группа 2 (n = 18) с летальным исходом. Исследования проводили на 1-е, 3-и и 7-е сутки. Общее количество лейкоцитов исследовали на гематологическом анализаторе Sysmex XT-1800i/XT-2000i (Япония), функциональную активность нейтрофилов – по активности и интенсивности фагоцитоза, кислородзависимому метаболизму. Для статистического исследования использовали программу Statistica 10.0 for Windows. Установлено, что у пациентов с АС в динамике 1-7-х суток наблюдения независимо от исхода в крови увеличивается количество метамиелоцитов, палочкоядерных, сегментоядерных нейтрофилов; при неблагоприятном исходе АС нейтрофильный лейкоцитоз более выражен, увеличивается количество моноцитов и эозинофилов. У пациентов с АС независимо от исхода увеличивается поглотительная способность нейтрофилов крови, кислород-зависимый метаболизм в спонтанном режиме, угнетается кислород-зависимый метаболизм в индуцированном режиме; при неблагоприятном исходе АС наблюдается эскалация роста поглотительной способности нейтрофилов крови на 1-7-е сутки наблюдения, на фоне угнетения кислород-зависимого метаболизма нейтрофилов в спонтанном и индуцированном режимах преимущественно на 3-и и 7-е сутки наблюдения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>abdominal sepsis</kwd><kwd>outcome</kwd><kwd>neutrophils</kwd><kwd>phagocytosis</kwd><kwd>oxygen-dependent metabolism</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>абдоминальный сепсис</kwd><kwd>исход</kwd><kwd>нейтрофилы</kwd><kwd>фагоцитоз</kwd><kwd>кислород-зависимый метаболизм</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Стрельцова Е.И., Пешкова И.В., Саматов И.Ю., Валеева В.А., Верещагин Е.И. 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