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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2024-23-6-70-80</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-3352</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>ЛАБОРАТОРНЫЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LABORATORY AND EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Создание ортотопической модели рака эндометрия</article-title><trans-title-group xml:lang="en"><trans-title>Establishment of an orthotopic model of endometrial cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3618-6890</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Франциянц</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Frantsiyants</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Франциянц Елена Михайловна - доктор биологических наук, профессор, заместитель генерального директора по науке.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) Y-1491-2018, Author ID (Scopus) 55890047700</p></bio><bio xml:lang="en"><p>Elena M. Frantsiyants - DSc, Professor, Deputy Director General for Science, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) Y-1491-2018, Author ID (Scopus) 55890047700</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2943-7655</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шихлярова</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shikhlyarova</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шихлярова Алла Ивановна - доктор биологических наук, профессор, старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) Y-6275-2018, Author ID (Scopus) 6507723229</p></bio><bio xml:lang="en"><p>Alla I. Shikhlyarova - DSc, Professor, Senior Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) Y-6275-2018, Author ID (Scopus) 6507723229</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3972-2452</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каплиева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaplieva</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каплиева Ирина Викторовна - доктор медицинских наук, заведующая лабораторией изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) ААЕ-3540-2019, Author ID (Scopus) 23994000800</p></bio><bio xml:lang="en"><p>Irina V. Kaplieva - MD, DSc, Head of the Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) ААЕ-3540-2019, Author ID (Scopus) 23994000800</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2302-8271</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бандовкина</surname><given-names>В. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Bandovkina</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бандовкина Валерия Ахтямовна - доктор биологических наук, ведущий научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) AAG-8708-2019, Author ID (Scopus) 57194276288</p></bio><bio xml:lang="en"><p>Valeria A. Bandovkina - DSc, Leading Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) AAG-8708-2019, Author ID (Scopus) 57194276288</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2674-9832</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Погорелова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pogorelova</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Погорелова Юлия Александровна - кандидат биологических наук, старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) AAE-4168-2022, Author ID (Scopus) 37026863400</p></bio><bio xml:lang="en"><p>Yulia A. Pogorelova - PhD, Senior Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) AAE-4168-2022, Author ID (Scopus) 37026863400</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7395-3086</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нескубина</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Neskubina</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нескубина Ирина Валерьевна - кандидат биологических наук, старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) AAG-8731-2019, Author ID (Scopus) 6507509066</p></bio><bio xml:lang="en"><p>Irina V. Neskubina - PhD, Senior Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) AAG-8731-2019, Author ID (Scopus) 6507509066</p></bio><email xlink:type="simple">neskubina.irina@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9749-2747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трепитаки</surname><given-names>Л. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Trepitaki</surname><given-names>L. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трепитаки Лидия Константиновна - кандидат биологических наук, научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) AAG-9218-2019, Author ID (Scopus) 55357624700</p></bio><bio xml:lang="en"><p>Lidiya K. Trepitaki - PhD, Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) AAG-9218-2019, Author ID (Scopus) 55357624700</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4318-7587</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сурикова</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Surikova</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сурикова Екатерина Игоревна - кандидат биологических наук, старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Researcher ID (WOS) AAG-8748-2019, Author ID (Scopus) 6507092816</p></bio><bio xml:lang="en"><p>Ekaterina I. Surikova - PhD, Senior Researcher, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Researcher ID (WOS) AAG-8748-2019, Author ID (Scopus) 6507092816</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9683-2164</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Моисеенко</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Moiseenko</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Моисеенко Татьяна Ивановна - доктор медицинских наук, профессор, главный научный сотрудник отделения гинекологии.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p></bio><bio xml:lang="en"><p>Tatyana I. Moiseenko - MD, PhD, Professor, Chief Researcher, Department of Gynecology, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3711-8155</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черярина</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Cheryarina</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черярина Наталья Дмитриевна - врач-лаборант лаборатории изучения патогенеза злокачественных опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p><p>Author ID (Scopus) 56204439400</p></bio><bio xml:lang="en"><p>Natalia D. Cheryarina - Laboratory Physician, Laboratory for the Study of Malignant Tumor Pathogenesis, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p><p>Author ID (Scopus) 56204439400</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1783-1073</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Котиева</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kotieva</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Котиева Виолетта Михайловна – студентка.</p><p>344022, Ростов-на-Дону, пер. Нахичеванский, 29</p></bio><bio xml:lang="en"><p>Violetta M. Kotieva - Student, Rostov State Medical University of the Ministry of Health of the Russia.</p><p>29, Nakhichevansky per., Rostov-on-Don, 344022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7017-3781</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Верескунова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vereskunova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Верескунова Александра Алексеевна – студентка.</p><p>344022, Ростов-на-Дону, пер. Нахичеванский, 29</p></bio><bio xml:lang="en"><p>Alexandra A. Vereskunova - student, Rostov State Medical University of the Ministry of Health of the Russia.</p><p>29, Nakhichevansky per., Rostov-on-Don, 344022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7968-5078</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Меньшенина</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Menshenina</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Меньшенина Анна Петровна - доктор медицинских наук, ведущий научный сотрудник отделения гинекологии.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p></bio><bio xml:lang="en"><p>Anna P. Menshenina - MD, DSc, Leading Researcher, Department of Gynecology, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рогозин</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rogozin</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рогозин Марк Андреевич – аспирант.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p></bio><bio xml:lang="en"><p>Mark A. Rogozin - Postgraduate, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5300-1213</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ишонина</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ishonina</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ишонина Оксана Георгиевна - кандидат биологических наук, заведующая отделом подготовки и переподготовки специалистов, ФГБУ «НМИЦ онкологии» Минздрава России; доцент кафедры медицинской биологии и генетики, ФГБОУ ВО «РостГМУ» Минздрава России.</p><p>344037, Ростов-на-Дону, 14-я линия, 63; 344022, Ростов-на-Дону, пер. Нахичеванский, 29</p></bio><bio xml:lang="en"><p>Oksana G. Ishonina - PhD, Head of the Department of Training and Retraining of Specialists, National Medical Research Centre for Oncology of the Ministry of Health of Russia; Associate Professor, Department of Medical Biology and Genetics, Rostov State Medical University of the Ministry of Health of the Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037; 29, Nakhichevansky per., Rostov-on-Don, 344022</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0068-0881</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ушакова</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Ushakova</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ушакова Наталья Дмитриевна - доктор медицинских наук, профессор, анестезиолог-реаниматолог отделения анестезиологии реанимации.</p><p>344037, Ростов-на-Дону, 14-я линия, 63</p></bio><bio xml:lang="en"><p>Natalya D. Ushakova - MD, DSc, Professor, Anesthesiologist-resuscitator, Department of Anesthesiology and Resuscitation, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Liniya St., Rostov-on-Don, 344037</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology of the Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Ростовский государственный медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Rostov State Medical University of The Ministry of Health of the Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии» Минздрава России; ФГБОУ ВО «Ростовский государственный медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology of the Ministry of Health of Russia; Rostov State Medical University of the Ministry of Health of the Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>01</month><year>2025</year></pub-date><volume>23</volume><issue>6</issue><fpage>70</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Франциянц Е.М., Шихлярова А.И., Каплиева И.В., Бандовкина В.A., Погорелова Ю.А., Нескубина И.В., Трепитаки Л.К., Сурикова Е.И., Моисеенко Т.И., Черярина Н.Д., Котиева В.М., Верескунова А.А., Меньшенина А.П., Рогозин М.А., Ишонина О.Г., Ушакова Н.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Франциянц Е.М., Шихлярова А.И., Каплиева И.В., Бандовкина В.A., Погорелова Ю.А., Нескубина И.В., Трепитаки Л.К., Сурикова Е.И., Моисеенко Т.И., Черярина Н.Д., Котиева В.М., Верескунова А.А., Меньшенина А.П., Рогозин М.А., Ишонина О.Г., Ушакова Н.Д.</copyright-holder><copyright-holder xml:lang="en">Frantsiyants E.M., Shikhlyarova A.I., Kaplieva I.V., Bandovkina V.A., Pogorelova Y.A., Neskubina I.V., Trepitaki L.K., Surikova E.I., Moiseenko T.I., Cheryarina N.D., Kotieva V.M., Vereskunova A.A., Menshenina A.P., Rogozin M.A., Ishonina O.G., Ushakova N.D.</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://www.siboncoj.ru/jour/article/view/3352">https://www.siboncoj.ru/jour/article/view/3352</self-uri><abstract><p>Цель исследования – создание модели карциномы матки у самок белых беспородных крыс путем трансплантации опухоли Герена непосредственно в рог матки. Материал и методы. Эксперимент был проведен на нелинейных белых крысах (n=15), массой 250 ± 25 гр. Белым беспородным крысам-самкам в условиях ксилазин-золетилового наркоза в асептических условиях скальпелем проводилась срединная лапаротомия. Длина разреза 2 см. В просвет правого маточного рога с помощью внутривенного катетера с инъекционным портом 22G (0,9 × 25 mm) вводили 0,5 мл опухолевой взвеси, содержащей 2,5–3,5×106 клеток. Подсчет опухолевых клеток производился на клеточном анализаторе ADAMII LS (Nano Entek, Korea). Длительность эксперимента – 21 сут. После декапитации животных производилась</p><p>морфологическая оценка препаратов опухолевого узла, окрашенных гематоксилином-эозином и по Ван-Гизон. Результаты. После трансплантации клеточной взвеси карциномы Герена макроскопически в области дна правого рога матки определялся опухолевый узел около 25 мм в диаметре, в брюшной полости фиксировалось наличие геморрагического выпота и опухолевые отсевы. При световой микроскопии видны участки нейтрофильной инфильтрации, значительное сужение просвета рога матки с признаками инволюции призматического эпителия сосочковых структур. В ткани опухолевого узла, индуцированного в матке, сохраняются типичные для карциномы Герена особенности опухолевых клеток: цитоплазматическо-ядерное соотношение остается близким 1:1. Формы ядра варьируют, но доминирующей остается неправильная овоидная форма, наблюдаются фигуры патологического митоза. Строма опухоли включает цитоплазматические отростчатые соединения, образующие опухолевую конгломерацию. Заключение. Представленная экспериментальная модель реализует возможность внутриматочного роста карциномы Герена у животных и наиболее приближена к локализации опухолевого очага у онкогинекологических больных.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of this study was to establish a model of uterine carcinoma in female laboratory rats by transplanting Guerin carcinoma directly into the uterine horn. Material and Methods. Fifteen nonlinear white laboratory rats weighing 250 ± 25 g served as the subjects of surgical intervention. all operative interventions were performed under xylazine-zoletil anesthesia. Female white laboratory rats were laparotomized under aseptic conditions using anesthesia. the incision length was 2 cm, and a tumor suspension containing 2.5-3.5×106 cells was injected into the lumen of the right uterine horn using an intravenous catheter with a 22G injection port (0.9 × 25 mm). tumor cells were counted using the ADAMIILS cell analyzer (Nano Entek, Korea). the tumor progression was monitored for 21 days. after euthanizing the animals under ether anesthesia, median longitudinal histological sections, 5–7 μm thick, were made from the tumor node and stained with hematoxylin-eosin and Van-Gizon using standard techniques. Results. Following the transplantation of Guerin’s carcinoma cell suspension, a tumor node of approximately 25 mm in diameter was identified macroscopically in the region of the inferior aspect of the right uterine horn. additionally, the presence of haemorrhagic effusion was documented in the abdominal cavity and tumor screenings. at light microscopy, areas of neutrophilic infiltration, significant narrowing of the lumen of the uterine horn with signs of involution, and prismatic epithelium of papillary structures were observed. the tumor cell features characteristic of Guerin’s carcinoma are preserved in the tumor node induced in the uterus, with a cytoplasmic-nuclear ratio that remains close to 1:1. the shapes of the nuclei vary, but the irregular ovoid shape remains dominant, and pathological mitotic figures are observed. the tumor stroma includes cytoplasmic branched connections connecting the tumor conglomeration. Conclusion. therefore, according to the morphological description, the presented experimental model demonstrates the possibility of intrauterine growth of Guerin’s carcinoma in animals and is most similar to the localization of the tumor focus in patients with gynecological cancer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>экспериментальная модель</kwd><kwd>рак эндометрия</kwd><kwd>злокачественный рост</kwd><kwd>карцинома Герена</kwd><kwd>опухолевый узел</kwd><kwd>крысы-самки</kwd><kwd>морфологическое исследование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>experimental model</kwd><kwd>endometrial cancer</kwd><kwd>malignant growth</kwd><kwd>Guerin carcinoma</kwd><kwd>tumor node</kwd><kwd>female rats</kwd><kwd>morphological study</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">Sung H., Ferlay J., Siegel R.L., Laversanne M., Soerjomataram I., Jemal A., Bray F. 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