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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-225-5-80-89</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-2674</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>ЭКСПЕРИМЕНТАЛЬНАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Особенности биологической реакции пищеварительной системы в эксперименте по исследованию препарата на основе 177Lu</article-title><trans-title-group xml:lang="en"><trans-title>Biological response of digestive system in experimental study of 177Lu-based compound</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0386-9732</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnova</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">smirn-ova@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/0000-0002-5144-1039</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Финогенова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Finogenova</surname><given-names>Yu. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0246-1794</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шпакова</surname><given-names>К. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Shpakova</surname><given-names>K. E.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0106-8384</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Варакса</surname><given-names>П. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Varaksa</surname><given-names>P. O.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3814-5630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кульбачевская</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulbachevskaya</surname><given-names>N. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коняева</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Konyaeva</surname><given-names>O. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2942-7895</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скрибицкий</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Skribitsky</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6260-0763</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лагодзинская</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Lagodzinskaya</surname><given-names>Yu. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1688-9866</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трубицына</surname><given-names>И. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Trubitsyna</surname><given-names>I. E.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7726-7991</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьева</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigorieva</surname><given-names>E. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр онкологии имени Н. Н. Блохина» Министерства здравоохранения Российской Федерации (ФГБУ «НМИЦ онкологии им. Н. Н. Блохина» Минздрава России); ГБУЗ Московский Клинический Научный Центр имени А. С. Логинова ДЗМ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«N. N. Blokhin National Medical Research Center of Oncology» оf the Ministry of Health of the Russian Federation; Moscow Clinical Scientific Center named after Loginov MHD</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр онкологии имени Н. Н. Блохина» Министерства здравоохранения Российской Федерации (ФГБУ «НМИЦ онкологии им. Н. Н. Блохина» Минздрава России)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«N. N. Blokhin National Medical Research Center of Oncology» оf the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ Московский Клинический Научный Центр имени А. С. Логинова ДЗМ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Clinical Scientific Center named after Loginov MHD</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>05</month><year>2024</year></pub-date><volume>0</volume><issue>5</issue><fpage>80</fpage><lpage>89</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнова А.В., Финогенова Ю.А., Шпакова К.Е., Варакса П.О., Кульбачевская Н.Ю., Коняева О.И., Скрибицкий В.А., Лагодзинская Ю.С., Трубицына И.Е., Григорьева Е.Ю., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Смирнова А.В., Финогенова Ю.А., Шпакова К.Е., Варакса П.О., Кульбачевская Н.Ю., Коняева О.И., Скрибицкий В.А., Лагодзинская Ю.С., Трубицына И.Е., Григорьева Е.Ю.</copyright-holder><copyright-holder xml:lang="en">Smirnova A.V., Finogenova Y.A., Shpakova K.E., Varaksa P.O., Kulbachevskaya N.Y., Konyaeva O.I., Skribitsky V.A., Lagodzinskaya Y.S., Trubitsyna I.E., Grigorieva E.Y.</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.nogr.org/jour/article/view/2674">https://www.nogr.org/jour/article/view/2674</self-uri><abstract><p>Цель исследования. Сопоставить данные ex vivo-радиометрии и in vivo-визуализации органов пищеварительного тракта крыс после введения177Lu-DOTA-TATE. Материалы и методы. Соединение177Lu-DOTA-TATE синтезировали в циклотронно-радиохимической лаборатории отдела радионуклидной диагностики и терапии НМИЦ онкологии им. Н. Н. Блохина МЗ РФ. Для визуализации органов пищеварительного тракта лабораторных крыс использован метод ОФЭКТ/КТ после введения177Lu-DOTA-TATE. В качестве метода сравнения использовали классическую прямую радиометрию постмортальных биологических образцов. Сканирование in vivo выполняли последовательно в динамическом режиме в трехмодальной системе лучевой визуализации мелких лабораторных животных MilLabs VECTOR6. Прямую радиометрию проводили классическим методом, регистрацию сигнала от радиоизотопа осуществляли на гамма-спектрометре «WIZARD 2480». Безопасность соединения оценивали классическими методами токсикологического исследования. Результаты. Проведена оценка безопасности соединения, получены данные о биологическом распределении и сопоставимости его результатов в зависимости от примененных методов обработки биологического материала. Заключение. При доклиническом токсикологическом исследовании препарат на основе177Lu был рекомендован для дальнейшего изучения. Накопление радиоактивного соединения в поджелудочной железе соответствовало данным литературы. Для тонкой и толстой кишки были показаны различия возможности регистрации методами ex vivo и in vivo. Данный факт необходимо учитывать при планировании аналогичных исследований для злокачественных новообразований пищеварительного тракта.</p></abstract><trans-abstract xml:lang="en"><p>Purpose. To compare information about the condition of the digestive tract obtained by ex vivo radiometry and in vivo imaging methods after administration of177Lu-DOTA-TATE to rats. Materials and methods. The compound177Lu-DOTA-TATE was synthesized in the cyclotron-radiochemical laboratory of the Department of Radionuclide Diagnostics and Therapy of the N. N. Blokhin National Medical Research Center of Oncology. SPECT/CT method was used to visualize the digestive tract of laboratory rats after administration of177Lu-DOTA-TATE. Classical direct radiometry of post mortem biological samples was used as a comparison method. In vivo imaging was performed sequentially in dynamic mode with MilLabs VECTOR6 small animal imaging system. In direct radiometry, signal from the radioisotope was detected with “WIZARD 2480” system. Safety of the compound177Lu-DOTA-TATE was assessed with standard toxicological methods. Results. The safety of the compound was assessed. Biodistribution data was obtained with ex vivo and in vivo methods, the results were compared. Conclusion. In the preclinical toxicological study,177Lu-based compound was recommended for further investigation. Pancreas uptake of the radioactive compound was consistent with literature data. For the small and large intestine, differences in feasibility of uptake detection with ex vivo and in vivo methods were shown. This fact should be taken into account when planning similar experiments for gastrointestinal cancer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лучевая визуализация</kwd><kwd>поджелудочная железа</kwd><kwd>крысы</kwd><kwd>лютеций</kwd><kwd>нейроэндокринные опухоли</kwd></kwd-group><kwd-group xml:lang="en"><kwd>imaging</kwd><kwd>pancreas</kwd><kwd>rat</kwd><kwd>lutetium</kwd><kwd>neuroendocrine cancer</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">Clinical recommendations. [Neuroendocrine tumors]. (in Russ.) Available at: https://cr.minzdrav.gov.ru/schema/610_1.@@ Клинические рекомендации. Нейроэндокринные опухоли. 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