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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">RUDN Journal of Medicine</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Медицина</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-0245</issn><issn publication-format="electronic">2313-0261</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">37170</article-id><article-id pub-id-type="doi">10.22363/2313-0245-2023-27-4-441-448</article-id><article-id pub-id-type="edn">JUKQVE</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>PHYSIOLOGY. EXPERIMENTAL PHYSIOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ФИЗИОЛОГИЯ. ЭКСПЕРИМЕНТАЛЬНАЯ ФИЗИОЛОГИЯ</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">Macrophage population state and proliferative activity of spleen cells under liver regeneration conditions</article-title><trans-title-group xml:lang="ru"><trans-title>Состояние макрофагальной популяции и пролиферативная активность клеток селезенки в условиях регенерации печени</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3218-250X</contrib-id><name-alternatives><name xml:lang="en"><surname>Mamedov</surname><given-names>Aiaz T.</given-names></name><name xml:lang="ru"><surname>Мамедов</surname><given-names>А. Т.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4925-8005</contrib-id><contrib-id contrib-id-type="spin">6486-5795</contrib-id><name-alternatives><name xml:lang="en"><surname>Gantsova</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Ганцова</surname><given-names>Е. А.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3001-4820</contrib-id><contrib-id contrib-id-type="spin">2698-1448</contrib-id><name-alternatives><name xml:lang="en"><surname>Kiseleva</surname><given-names>Viktoria V.</given-names></name><name xml:lang="ru"><surname>Киселева</surname><given-names>В. В.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8077-2307</contrib-id><contrib-id contrib-id-type="spin">4521-2250</contrib-id><name-alternatives><name xml:lang="en"><surname>Lokhonina</surname><given-names>Anastasia V.</given-names></name><name xml:lang="ru"><surname>Лохонина</surname><given-names>А. В.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2133-2293</contrib-id><contrib-id contrib-id-type="spin">3534-3764</contrib-id><name-alternatives><name xml:lang="en"><surname>Makarov</surname><given-names>Andrey V.</given-names></name><name xml:lang="ru"><surname>Макаров</surname><given-names>А. В.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-4242-4397</contrib-id><contrib-id contrib-id-type="spin">4746-9334</contrib-id><name-alternatives><name xml:lang="en"><surname>Turygina</surname><given-names>Svetlana A.</given-names></name><name xml:lang="ru"><surname>Турыгина</surname><given-names>С. А.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-8538-3614</contrib-id><name-alternatives><name xml:lang="en"><surname>Bicherova</surname><given-names>Irina A.</given-names></name><name xml:lang="ru"><surname>Бичерова</surname><given-names>И. А.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4344-8943</contrib-id><contrib-id contrib-id-type="spin">5220-1893</contrib-id><name-alternatives><name xml:lang="en"><surname>Arutyunyan</surname><given-names>Irina V.</given-names></name><name xml:lang="ru"><surname>Арутюнян</surname><given-names>И. В.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8650-8240</contrib-id><contrib-id contrib-id-type="spin">3406-3866</contrib-id><name-alternatives><name xml:lang="en"><surname>Vishnyakova</surname><given-names>Polina A.</given-names></name><name xml:lang="ru"><surname>Вишнякова</surname><given-names>П. А.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2392-4439</contrib-id><contrib-id contrib-id-type="spin">5160-9029</contrib-id><name-alternatives><name xml:lang="en"><surname>Elchaninov</surname><given-names>Andrey V.</given-names></name><name xml:lang="ru"><surname>Ельчанинов</surname><given-names>А. В.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6498-5764</contrib-id><contrib-id contrib-id-type="spin">7919-8430</contrib-id><name-alternatives><name xml:lang="en"><surname>Fatkhudinov</surname><given-names>Timur Kh.</given-names></name><name xml:lang="ru"><surname>Фатхудинов</surname><given-names>Т. Х.</given-names></name></name-alternatives><email>elchandrey@yandex.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Avtsyn Research Institute of Human Morphology of Federal state budgetary scientific institution «Petrovsky National Research Centre of Surgery»</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт морфологии человека имени академика А.П. Авцына Федерального государственного бюджетного научного учреждения «Российский научный центр хирургии имени академика Б.В. Петровского»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">National Medical Research Center for Obstetrics, Gynecology and Perinatology Named After Academician V.I. Kulakov</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр акушерства, гинекологии и перинатологии имени академика В.И. Кулакова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>27</volume><issue>4</issue><issue-title xml:lang="en">PHYSIOLOGY. EXPERIMENTAL PHYSIOLOGY</issue-title><issue-title xml:lang="ru">ФИЗИОЛОГИЯ. ЭКСПЕРИМЕНТАЛЬНАЯ ФИЗИОЛОГИЯ</issue-title><fpage>441</fpage><lpage>448</lpage><history><date date-type="received" iso-8601-date="2023-12-22"><day>22</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Mamedov A.T., Gantsova E.A., Kiseleva V.V., Lokhonina A.V., Makarov A.V., Turygina S.A., Bicherova I.A., Arutyunyan I.V., Vishnyakova P.A., Elchaninov A.V., Fatkhudinov T.K.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Мамедов А.Т., Ганцова Е.А., Киселева В.В., Лохонина А.В., Макаров А.В., Турыгина С.А., Бичерова И.А., Арутюнян И.В., Вишнякова П.А., Ельчанинов А.В., Фатхудинов Т.Х.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Mamedov A.T., Gantsova E.A., Kiseleva V.V., Lokhonina A.V., Makarov A.V., Turygina S.A., Bicherova I.A., Arutyunyan I.V., Vishnyakova P.A., Elchaninov A.V., Fatkhudinov T.K.</copyright-holder><copyright-holder xml:lang="ru">Мамедов А.Т., Ганцова Е.А., Киселева В.В., Лохонина А.В., Макаров А.В., Турыгина С.А., Бичерова И.А., Арутюнян И.В., Вишнякова П.А., Ельчанинов А.В., Фатхудинов Т.Х.</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://journals.rudn.ru/medicine/article/view/37170">https://journals.rudn.ru/medicine/article/view/37170</self-uri><abstract xml:lang="en"><p style="text-align: justify;">Relevance. Currently, the participation of immune system cells in the regulation of reparative processes is attracting more and more attention of researchers. There is an anatomical connection between the liver and spleen by means of portal vein. Thus, cytokines and other biologically active substances can enter the liver from the spleen through the portal vein, as well as cells can migrate to the liver. However, the specific mechanisms of mutual influence of the mentioned organs, including in reparative processes, remain poorly studied. The aim of our work was to study the state of spleen monocyte-macrophage population after liver resection, as well as the proliferative activity of spleen cells during liver regeneration . Materials and Methods . The model of liver regeneration after 70 % resection in mouse was reproduced in this work. The animals were taken out of the experiment after 1, 3 and 7 days. The marker of cell proliferation Ki67 was immunohistochemically detected, the state of spleen monocyte-macrophage population was evaluated by markers CD68, CD115, CD206, F4/80 by methods of immunohistochemistry and flow cytometry. Results and Discussion . The liver regeneration had a pronounced effect on the cytoarchitectonics of the spleen. In 1 day after liver resection in the spleen there was observed a decrease in the share of Ki67+cells, according to the flow cytometry data there was a decrease in the number of CD115+cells, in 3 and 7 days there was a decrease in the number of F4/80+ macrophages. Conclusion . Liver resection causes changes in the state of cell populations of the spleen as well. First of all, to the decrease in the activity of proliferative processes in it, as well as to the changes in the state of the monocyte-macrophage system. A decrease in the content of CD115+ and F4/80+ cells in the spleen was found, which indirectly indicates the migration of monocytes/macrophages after liver resection, which can also influence the course of reparative processes in the liver.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Актуальность. В настоящее время все большее внимание исследователей привлекает участие клеток иммунной системы в регуляции репаративных процессов. Между печенью и селезенкой существует анатомическая связь посредством портальной вены. Таким образом, через портальную вену в печень из селезенки могут поступать цитокины и других биологически активных веществ, а также мигрировать клетки. Однако конкретные механизмы взаимного влияния указанных органов, в том числе при репаративных процессах, остаются мало изученными. Целью настоящей работы было изучить состояние моноцитарно-макрофагальной популяции селезенки после резекции печени, а также пролиферативная активность клеток селезенки при регенерации печени. Материалы и методы. В работе была воспроизведена модель регенерации печени после 70 % резекции у мыши. Животных выводили из эксперимента через 1 сут., 3 сут. и 7 сут. Иммуногистохимически выявляли маркер клеточной пролиферации Ki67, состояние моноцитарно- макрофагальной популяции селезенки оценивали по маркерам Ly6C, CD115, CD68, CD163, CD206 и F4/80 методами иммуногистохимии и проточной цитометрии. Результаты и обсуждение. Регенерация печени оказывала выраженной влияние на цитоархитектонику селезенки. Через 1 сутки после резекции печени в селезенке наблюдали снижение доли Ki67+клеток, по данным проточной цитометрии обнаружено уменьшение числа CD115+клеток, через 3 и 7 суток уменьшение числа F4/80+ макрофагов. Выводы. Резекция печени вызывает изменения и в состоянии клеточных популяций селезенки. В первую очередь, к снижению активности пролиферативных процессов в ней, а также к изменению состояния моноцитарно-макрофагальной системы. Установлено снижение содержания CD115+ и F4/80+клеток в селезенке, что косвенно свидетельствует о миграции моноцитов/макрофагов после резекции печени, что также может оказывать влияние на течение репаративных процессов в печени.</p></trans-abstract><kwd-group xml:lang="en"><kwd>regeneration</kwd><kwd>liver</kwd><kwd>resection</kwd><kwd>spleen</kwd><kwd>macrophages</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>регенерация</kwd><kwd>печень</kwd><kwd>резекция</kwd><kwd>селезенка</kwd><kwd>макрофаги</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was performed with the financial support of State assignment 123030700110–4, grant MK-1573.2022.3 from the President of the Russian Federation to support young scientists, and grant 22–14–00152 from the Russian Science Foundation.</funding-statement><funding-statement xml:lang="ru">работа выполнена при финансовой поддержке Государственного задания 123030700110–4, гранта Президента РФ для поддержки молодых ученых MK-1573.2022.3, гранта РНФ 22–14–00152.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Li L, Duan M, Chen W, Jiang A, Li X, Yang J, Li Z. 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