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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">Morphology</journal-id><journal-title-group><journal-title xml:lang="en">Morphology</journal-title><trans-title-group xml:lang="ru"><trans-title>Морфология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1026-3543</issn><issn publication-format="electronic">2949-2556</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">690024</article-id><article-id pub-id-type="doi">10.17816/morph.690024</article-id><article-id pub-id-type="edn">VGHOJE</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">Perivascular macrophages of rat liver do not express CD68 marker</article-title><trans-title-group xml:lang="ru"><trans-title>Периваскулярные макрофаги печени крыс не содержат маркера CD68</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>大鼠肝脏血管周围巨噬细胞不含CD68标志物</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5789-6475</contrib-id><contrib-id contrib-id-type="spin">3488-8851</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikitina</surname><given-names>Inga A.</given-names></name><name xml:lang="ru"><surname>Никитина</surname><given-names>Инга Александровна</given-names></name><name xml:lang="zh"><surname>Nikitina</surname><given-names>Inga A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>inga06819@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3997-2232</contrib-id><contrib-id contrib-id-type="spin">8877-8902</contrib-id><name-alternatives><name xml:lang="en"><surname>Razenkova</surname><given-names>Valeria A.</given-names></name><name xml:lang="ru"><surname>Разенкова</surname><given-names>Валерия Алексеевна</given-names></name><name xml:lang="zh"><surname>Razenkova</surname><given-names>Valeria A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Biology)</p></bio><email>valeriya.raz@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2456-8165</contrib-id><contrib-id contrib-id-type="spin">3252-3029</contrib-id><name-alternatives><name xml:lang="en"><surname>Korzhevskii</surname><given-names>Dmitrii E.</given-names></name><name xml:lang="ru"><surname>Коржевский</surname><given-names>Дмитрий Эдуардович</given-names></name><name xml:lang="zh"><surname>Korzhevskii</surname><given-names>Dmitrii E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><email>DEK2@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Experimental Medicine</institution></aff><aff><institution xml:lang="ru">Институт экспериментальной медицины</institution></aff><aff><institution xml:lang="zh">Institute of Experimental Medicine</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-03-23" publication-format="electronic"><day>23</day><month>03</month><year>2026</year></pub-date><volume>164</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>245</fpage><lpage>252</lpage><history><date date-type="received" iso-8601-date="2025-09-02"><day>02</day><month>09</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-10-19"><day>19</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2026,</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2029-03-23"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://j-morphology.com/1026-3543/article/view/690024">https://j-morphology.com/1026-3543/article/view/690024</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Tissue macrophages play a key role in regulating hepatic tissue homeostasis. At the same time, they represent a heterogeneous population of cells in terms of both phenotypic and functional characteristics.</p> <p><bold>AIM: </bold>To characterize the immunophenotype of rat liver macrophages using the phagocytic activity marker CD68 and the microglial marker Iba-1.</p> <p><bold>METHODS:</bold> Liver and brain samples from Wistar rats (<italic>n</italic> = 8) were used. Double immunohistochemical staining was performed using antibodies against CD68 and Iba-1 (ionized calcium-binding adapter molecule 1). Specimens were analyzed using confocal laser scanning microscopy.</p> <p><bold>RESULTS: </bold>Iba-1-positive cells identified in the specimens corresponded to interstitial macrophages and Kupffer cells. CD68- positive macrophages were detected along hepatic sinusoidal capillaries and between hepatocytes. Co-expression of CD68 and Iba-1 was observed in Kupffer cells in the liver and in perivascular macrophages in the brain, but not in perivascular macrophages localized in the portal triads or in the interlobular connective tissue.</p> <p><bold>CONCLUSION:</bold> The colocalization of Iba-1 and CD68 in brain perivascular macrophages and the absence of their co-expression in hepatic interstitial macrophages indicate organ-specific phenotypic features of perivascular phagocytes.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Тканевые макрофаги играют ключевую роль в регуляции тканевого гомеостаза печени. При этом они представляют собой гетерогенную популяцию клеток как по фенотипическим, так и по функциональным характеристикам.</p> <p><bold>Цель исследования</bold> — охарактеризовать иммунофенотип макрофагов печени крыс с использованием маркера фагоцитарной активности CD68 и микроглиального маркера Iba-1.</p> <p><bold>Методы.</bold> Использовали образцы печени и головного мозга крыс линии Wistar (<italic>n</italic> = 8). Проведено двойное иммуногистохимическое окрашивание с помощью антител к маркеру макрофагов CD68 и маркеру микроглии Iba-1 (Ionized calcium-binding adapter molecule 1). Анализ препаратов осуществляли с использованием конфокальной сканирующей микроскопии.</p> <p><bold>Результаты. </bold>Выявленные в ходе анализа препаратов Iba-1-положительные клетки соответствуют интерстициальным макрофагам и клеткам Купфера. CD68-положительные макрофаги обнаружены вдоль синусоидных капилляров печени и между гепатоцитами. Коэкспрессию белков CD68 и Iba-1 демонстрируют клетки Купфера в печени и периваскулярные макрофаги в головном мозге, но не периваскулярные макрофаги, локализующиеся в области печёночных триад и в междольковой соединительной ткани.</p> <p><bold>Заключение. </bold>Одновременная локализация Iba-1 и CD68 в периваскулярных макрофагах головного мозга и отсутствие коэкспрессии этих белков в интерстициальных макрофагах печени указывает на то, что периваскулярные фагоциты имеют органоспецифические особенности фенотипа.</p></trans-abstract><trans-abstract xml:lang="zh"><p><bold>论证。</bold>组织巨噬细胞在调节肝脏组织稳态中起着关键作用。同时，它们在表型和功能特征方面代表着异质性细胞群体。</p> <p><bold>目的。</bold>本研究旨在利用吞噬活性标志物 CD68 和小胶质细胞标志物 Iba-1 来表征大鼠肝脏巨噬细胞的免疫表型。</p> <p><bold>方法。</bold>使用了来自 Wistar 大鼠（n = 8）的肝脏和脑组织样本。采用针对巨噬细胞标志物 CD68 和小胶质细胞标志物 Iba-1（电离钙结合衔接分子 1） 的抗体进行双重免疫组织化学染色。采用共聚焦扫描显微镜对样品进行分析。</p> <p><bold>结果。</bold>在对制备物进行分析时发现的 Iba-1 阳性细胞对应于间质巨噬细胞和库普弗细胞。在肝窦毛细血管和肝细胞之间发现了CD68阳性巨噬细胞。CD68 和 Iba-1 蛋白的共表达在肝脏的库普弗细胞和脑的血管周围巨噬细胞中得到证实，但在肝脏三联体和叶间结缔组织的血管周围巨噬细胞中则未得到证实。</p> <p><bold>结论。</bold>脑血管周围巨噬细胞中 Iba-1 和 CD68 的同时定位，以及肝脏间质巨噬细胞中这些蛋白的缺乏共表达，表明血管周围吞噬细胞具有器官特异性表型特征。</p></trans-abstract><kwd-group xml:lang="en"><kwd>resident macrophages</kwd><kwd>liver</kwd><kwd>Iba-1</kwd><kwd>CD68</kwd><kwd>confocal microscopy</kwd><kwd>rat</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>резидентные макрофаги</kwd><kwd>печень</kwd><kwd>Iba-1</kwd><kwd>CD68</kwd><kwd>конфокальная микроскопия</kwd><kwd>крыса</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>驻留巨噬细胞</kwd><kwd>肝脏</kwd><kwd>Iba-1</kwd><kwd>CD68</kwd><kwd>共聚焦显微镜</kwd><kwd>大鼠</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Правительство Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Government of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="zh">Government of the Russian Federation</institution></institution-wrap></funding-source><award-id>FGWG-2024-0015</award-id></award-group><funding-statement xml:lang="en">The study was supported as part of state assignment No. FGWG-2024-0015 of the Institute of Experimental Medicine</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счёт средств государственного задания ФГБНУ «ИЭМ» № FGWG-2024-0015</funding-statement><funding-statement xml:lang="zh">The study was supported as part of state assignment No. FGWG-2024-0015 of the Institute of Experimental Medicine</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Zhao J, Andreev I, Silva HM. Resident tissue macrophages: Key coordinators of tissue homeostasis beyond immunity. Sci Immunol. 2024;9(94):eadd1967. doi: 10.1126/SCIIMMUNOL.ADD1967 EDN: YCNTFK</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Ikarashi M, Nakashima H, Kinoshita M, et al. Distinct development and functions of resident and recruited liver Kupffer cells/macrophages. J Leukoc Biol. 2013;94(6):1325–1336. doi: 10.1189/jlb.0313144</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>El’chaninov AV, Lokhonina AV, Makarov AV, et al. Phenotypic polymorphism of normal rat liver Kupffer cells. Journal of Anatomy and Histopathology. 2019;8(3):35–39. doi: 10.18499/2225-7357-2019-8-3-35-39 EDN: WMUEAJ</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Donovan KM, Leidinger MR, McQuillen LP, et al. Allograft inflammatory factor 1 as an immunohistochemical marker for macrophages in multiple tissues and laboratory animal species. Comp Med. 2018;68(5):341–348. doi: 10.30802/AALAS-CN-18-000017</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Patent RUS № 2719163/ 22.11.19. Byul. №11. Korzhevskij DE, Kirik OV, Alekseeva OS. Method of antigen retrieval during immunocytochemical reactions. Available from: https://patentimages.storage.googleapis.com/67/5b/e4/d6171b8b674e3b/RU2719163C1.pdf (In Russ.) EDN: MJMJPJ</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Schneider CA, Rasband WS, Eliceiri KW. NIH Image to ImageJ: 25 years of image analysis. Nat Methods. 2012;9(7):671–675. doi: 10.1038/nmeth.2089</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Honda H, Kimura H, Rostami A. Demonstration and phenotypic characterization of resident macrophages in rat skeletal muscle. Immunology. 1990;70(2): 272–277.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Pervin M, Hasan I, Kobir MA, et al. Immunophenotypic analysis of the distribution of hepatic macrophages, lymphocytes and hepatic stellate cells in the adult rat liver. Anat Histol Emryol. 2021;50(4):736–745. doi: 10.1111/ahe.12718 EDN: WUQDNM</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Kirik OV, Alekseeva OS, Tsyba DL, Korzhevskii DE. Reaction of the hippocampal microglia to hyperbaric oxygen. Bull Exp Biol Med. 2022;173(5):655–659. doi: 10.1007/s10517-022-05607-y EDN: KVPGBR</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Borst K, Dumas AA, Prinz M. Microglia: Immune and non-immune functions. Immunity. 2021;54(10):2194–2208. doi: 10.1016/j.immuni.2021.09.014 EDN: QHRSYM</mixed-citation></ref></ref-list></back></article>
