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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">nmp</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал им. Н.В. Склифосовского «Неотложная медицинская помощь»</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Sklifosovsky Journal "Emergency Medical Care"</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-9022</issn><issn pub-type="epub">2541-8017</issn><publisher><publisher-name>“N.V. Sklifosovsky Research Institute for Emergency Medicine”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23934/2223-9022-2023-12-2-239-249</article-id><article-id custom-type="elpub" pub-id-type="custom">nmp-1631</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Метаболизм и микроструктура стенки тонкой кишки у пациентов с колоректальным раком</article-title><trans-title-group xml:lang="en"><trans-title>Metabolism and Microstructure of the Small Intestine Wall in Patients With Colorectal 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/0000-0003-2230-9431</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Багрянцев</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bagryantsev</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Багрянцев Максим Владимирович - кандидат медицинских наук, врач-хирург ГБУЗ НО «НОКБ им. Н.А. Семашко».</p><p>603126, Нижний Новгород, ул. Родионова, д. 190</p></bio><bio xml:lang="en"><p>Maksim V. Bagryantsev - Candidate of Medical Sciences, Surgeon, N.A. Semashko Nizhegorodsky Regional Clinical Hospital.</p><p>190, Rodionova Str., Nizhny Novgorod, 603126</p></bio><email xlink:type="simple">maks-bagryancev@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/0000-0002-9555-190X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рябков</surname><given-names>М. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryabkov</surname><given-names>M. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рябков Максим Георгиевич - доктор медицинских наук, доцент, ведущий научный сотрудник Университетской клиники, ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Maksim G. Ryabkov - Doctor of Medical Sciences, Associate Professor, Leading Researcher, University Clinic, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">maxim-ryabkov@yandex.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>Бедерина</surname><given-names>Е. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Bederina</surname><given-names>E. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бедерина Евгения Львовна - врач-патологоанатом патологоанатомического отделения ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Evgenia L. Bederina - Pathologist of the Pathoanatomical Department of the Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">genacrok@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5158-7089</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Логинова</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Loginova</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Логинова Мария Максимовна - младший научный сотрудник лаборатории оптической когерентной томографии НИИ экспериментальной онкологии и биомедицинских технологий ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Maria M. Loginova - Junior Researcher, Laboratory of Optical Coherence Tomography, Research Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">marialoginova96@yandex.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/0000-0001-9690-4191</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Базаев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazayev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базаев Андрей Владимирович - доктор медицинских наук, профессор, заведующий кафедрой общей, оперативной хирургии и топографической анатомии, ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Andrey V. Bazayev - Doctor of Medical Sciences, Professor, Head of the Department of General, Operative Surgery and Topographic Anatomy, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">bazaewandrei@yandex.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/0000-0001-6015-4974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абелевич</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Abelevich</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абелевич Александр Исакович - доктор медицинских наук, профессор, профессор кафедры общей, оперативной хирургии и топографической анатомии, ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Aleksandr I. Abelevich - Doctor of Medical Sciences, Professor, Professor of the Department of General, Operative Surgery and Topographic Anatomy, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">aabelevich@yandex.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/0000-0003-3855-8686</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дезорцев</surname><given-names>И. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Dezortsev</surname><given-names>I. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дезорцев Илья Львович - кандидат медицинских наук, главный внештатный колопроктолог Минздрава Нижегородской области, заведующий отделением колопроктологии и отделением абдоминальной онкологии ГБУЗ НО «НОКБ им. Н.А. Семашко».</p><p>603126, Нижний Новгород, ул. Родионова, д. 190</p></bio><bio xml:lang="en"><p>Ilya L. Dezortsev - Candidate of Medical Sciences, Chief Freelance Coloproctologist of the Ministry of Health of the Nizhny Novgorod Region, Head of the Department of Coloproctology and the Department of Abdominal Oncology, N.A. Semashko Nizhegorodsky Regional Clinical Hospital.</p><p>190, Rodionova Str., Nizhny Novgorod, 603126</p></bio><email xlink:type="simple">dezortsev-il@yandex.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/0000-0001-8430-6215</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бунова</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bunova</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бунова Светлана Сергеевна - доктор медицинских наук, профессор, профессор кафедры семейной медицины, ФГАОУ ВО БелГУ.</p><p>308015, Белгород, ул. Победы, д. 85</p></bio><bio xml:lang="en"><p>Svetlana S. Bunova - Doctor of Medical Sciences, Professor, Professor of the Department of Family Medicine, Belgorod State National Research University.</p><p>85, Pobedi St., Belgorod, 308015</p></bio><email xlink:type="simple">ssbunova@mail.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/0000-0002-3207-7227</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ширманова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shirmanova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширманова Марина Вадимовна - кандидат биологических наук, заместитель директора по науке, заведующая лабораторией индивидуальной химиотерапии рака НИИ экспериментальной онкологии и биомедицинских технологий ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Marina V. Shirmanova - Candidate of Biological Sciences, Deputy Director for Science, Head of the Laboratory for Individual Cancer Chemotherapy, Research Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">shirmanovam@mail.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/0000-0003-3253-8211</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щеславский</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcheslavskiy</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щеславский Владислав Игоревич - заведующий лабораторией оптической спектроскопии и микроскопии НИИ экспериментальной онкологии и биомедицинских технологий ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Vladislav I. Shcheslavskiy - Head of the Laboratory of Optical Spectroscopy and Microscopy, Research Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">vis@becker-hickl.de</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4769-417X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киселева</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiseleva</surname><given-names>E. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Киселева Елена Борисовна - кандидат биологических наук, старший научный сотрудник лаборатории оптической когерентной томографии НИИ экспериментальной онкологии и биомедицинских технологий ФГБОУ ВО ПИМУ МЗ РФ.</p><p>603950, Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Elena B. Kiseleva - Candidate of Biological Sciences, Senior Researcher, Laboratory of Optical Coherence Tomography, Research Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University.</p><p>10/1, Minin and Pozharsky Sq., Nizhny Novgorod, 603005</p></bio><email xlink:type="simple">kiseleva84@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГБУЗ НО «Нижегородская областная клиническая больница им. Н.А. Семашко»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.A. Semashko Nizhegorodsky Regional Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Приволжский исследовательский медицинский университет» МЗ РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГАОУ ВО «Белгородский государственный национальный исследовательский университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Belgorod State National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>07</month><year>2023</year></pub-date><volume>12</volume><issue>2</issue><fpage>239</fpage><lpage>249</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Багрянцев М.В., Рябков М.Г., Бедерина Е.Л., Логинова М.М., Базаев А.В., Абелевич А.И., Дезорцев И.Л., Бунова С.С., Ширманова М.В., Щеславский В.И., Киселева Е.Б., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Багрянцев М.В., Рябков М.Г., Бедерина Е.Л., Логинова М.М., Базаев А.В., Абелевич А.И., Дезорцев И.Л., Бунова С.С., Ширманова М.В., Щеславский В.И., Киселева Е.Б.</copyright-holder><copyright-holder xml:lang="en">Bagryantsev M.V., Ryabkov M.G., Bederina E.L., Loginova M.M., Bazayev A.V., Abelevich A.I., Dezortsev I.L., Bunova S.S., Shirmanova M.V., Shcheslavskiy V.I., Kiseleva E.B.</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.jnmp.ru/jour/article/view/1631">https://www.jnmp.ru/jour/article/view/1631</self-uri><abstract><p>АКТУАЛЬНОСТЬ У пациентов с колоректальным раком (КРР) нормальная тонкая кишка, расположенная вне патологического очага, претерпевает изменения, которые могут быть причиной пищеварительной дисфункции после радикальной операции по удалению опухоли.</p><p>Оценка метаболических и микроструктурных изменений в слизистой оболочке подвздошной кишки у пациентов с КРР необходима для коррекции алгоритмов послеоперационной терапии, энтерального питания. Современные средства оптического биоимиджинга потенциально способны решить эту сложную диагностическую задачу.</p><p>ЦЕЛЬ Исследовать особенности метаболизма и морфологической структуры стенки условно нормальной тонкой кишки со стороны слизистой оболочки у пациентов с КРР 1–3-й стадий методами макро-FLIM и оптической когерентной томографии (ОКТ).</p><p>МАТЕРИАЛ И МЕТОДЫ Объектом исследования являлась стенка подвздошной кишки (66 образцов) со стороны слизистой оболочки у пациентов с гистологически подтвержденным КРР 1–3-й стадий с локализацией опухоли в правых отделах ободочной кишки. 8 образцов получены у пациентов с 1-й стадией КРР, 38 образцов — у пациентов со 2-й стадией и 20 образцов — с 3-й стадией развития опухоли. Объем оперативного вмешательства — правосторонняя гемиколэктомия с тотальной мезо­колонэктомией — CME (лимфодиссекцией Д2). Свежие образцы ткани исследовали методами флуоресцентного время-разрешенного макроимиджинга (макро-FLIM) и ОКТ с последующим гистологическим анализом материала.</p><p>РЕЗУЛЬТАТЫ По данным гистологического исследования в тонкой кишке пациентов с 1-й стадией КРР слизистая оболочка покрыта нормальным однослойным призматическим каемчатым эпителием. В образцах кишки пациентов со 2-й стадией КРР наблюдалась гиперсекреция слизи с участками фиброза и полнокровием сосудов. При 3-й стадии КРР слизистая оболочка тонкой кишки была рыхлой, с локальными утолщениями, участками фиброза с выраженным лейкостазом и очагами атрофии. Ни в одном из образцов не обнаружены гистологические признаки злокачественной опухоли.</p><p>По данным ОКТ в слизистой оболочке тонкой кишки у пациентов с 1-й и 2-й стадиями КРР хорошо визуализировались контуры ворсинок и, частично, крипты. Структура ворсинок была гладкой, негрубой, а форма регулярной. У пациентов с 3-й стадией КРР контуры крипт и ворсинок были нечеткими. Различий в картине ОКТ между гистологическими препаратами при 1-й и 2-й стадиях КРР получено не было: структура ворсинок тонкой кишки была четкой, форма неизмененной. По данным FLIM выявлены статистически значимые отличия в показателях среднего времени жизни флуоресценции восстановленного никотинамиддинуклеотида (фосфата) НАД(Ф)Н (τm) между 2-й и 3-й (p=0,031), 1-й и 3-й (p=0,018) стадиями КРР. При 1-й стадии КРР τm составило 1,61 [1,30; 2,02] нс, при 2-й стадии — 1,50 [1,36; 1,73] нс, при 3-й стадии — 1,37 [1,22; 1,51] нс. Результаты FLIM предположительно свидетельствуют об увеличении роли гликолиза в энергетическом метаболизме энтероцитов вместе с увеличением стадии КРР.</p><p>ЗАКЛЮЧЕНИЕ У пациентов с раком правых отделов ободочной кишки в не затронутой злокачественным поражением подвздошной кишке зафиксированы нарушения микроструктуры слизистой оболочки. При этом выраженность нарушений микроструктуры в стенке тонкой кишки связана со стадией развития опухоли в толстой кишке. Технологии биовизуализации, а именно — методы оптической когерентной томографии и флуоресцентного время-разрешенного макроимиджинга, позволили объективно отобразить нарушения микроструктуры и метаболизма в стенке подвздошной кишки. Данные оптической колоректальной томографии продемонстрировали различия в структурной картине ворсинок кишки у пациентов 1–2-й и 3-й стадий колоректального рака. Результаты флуоресцентного время-разрешенного макроимиджинга метаболического кофактора никотинамиддинуклеотида (фосфата) свидетельствовали об увеличении роли гликолиза в энергетическом метаболизме энтероцитов вместе с ростом стадии колоректального рака. Выявленные нарушения в состоянии тонкой кишки развиваются у пациентов с колоректальным раком до операции и с высокой вероятностью являются важным патогенетическим звеном мальабсорбции в послеоперационном периоде. В случае подтверждения гипотезы, разработанный алгоритм комплексной диагностики нарушений микроструктуры и метаболизма в тканях расширит возможности реабилитации пациентов с раком правых отделов толстой кишки.</p></abstract><trans-abstract xml:lang="en"><p>RELEVANCE In patients with colorectal cancer (CRC), the normal small intestine, located outside the pathological focus, undergoes changes that may be the cause of digestive dysfunction after radical surgery to remove the tumor.</p><p>The assessment of metabolic and microstructural changes in the ileum mucosa in patients with colorectal cancer is necessary to correct the algorithms of postoperative therapy and enteral nutrition. Modern means of optical bioimaging are potentially capable of solving this complex diagnostic problem.</p><p>AIM OF STUDY To study the features of metabolism and morphological structure of the wall of a conditionally normal small intestine in the mucosa in patients with stage 1–3 CRC using macro- FLIM and optical coherence tomography (OCT).</p><p>MATERIAL AND METHODS The object of the study was the wall of the ileum (66 samples) from the mucosal side of patients with histologically confirmed CRC stages 1–3 with tumor location in the right sections of the colon. Eight samples were obtained from patients with stage 1 CRC, 38 samples were obtained from patients with stage 2 and 20 samples were obtained from patients with stage 3 tumor. The volume of surgical intervention is right-sided hemicolectomy with total mesocolonectomy, CME (D2 lymph node dissection). Fresh tissue samples were examined using fluorescent lifetime macroimaging (macro-FLIM ) and OCT, followed by histological analysis of the material.</p><p>RESULTS According to a histological study in the small intestine of patients with stage 1 CRC, the mucosa is covered with a normal single-layer prismatic border epithelium. In the intestine samples of patients with stage 2 CRC, mucus hypersecretion with areas of fibrosis and vascular congestion was observed. At the 3rd stage of CRC, the mucous membrane of the small intestine was loose, with local thickenings, areas of fibrosis with severe leukostasis, and foci of atrophy. None of the samples showed histological signs of a malignant tumor.</p><p>According to OCT data, in the mucous membrane of the small intestine in patients with the 1st and 2nd stages of CRC, the contours of the villi and, partially, the crypts were well visualized. The structure of the villi was smooth, not coarse, and the shape was regular. In patients with stage 3 CRC, the contours of the crypts and villi were indistinct. There were no differences in the OCT picture between histologic preparations in the 1st and 2nd stages of CRC: the structure of the villi of the small intestine was clear, the shape was unchanged. According to FLIM data, statistically significant differences were revealed in the mean fluorescence lifetime values of reduced nicotinamide dinucleotide (phosphate) NAD(P)H (τm) between 2nd and 3rd (p=0.031), 1st and 3rd (p=0.018) by CRC stages. At the 1st stage of CRC τm was 1.61 [1.30; 2.02] ns, at the 2nd stage 1.50 [1.36; 1.73] ns, at the 3rd stage 1.37 [1.22; 1.51] ns. The FLIM results suggest an increase in the role of glycolysis in enterocyte energy metabolism along with progression of the CRC stage.</p><p>CONCLUSION In patients with cancer of the right colon, lesions of the microstructure of the mucous membrane were revealed in the ileum not affected by the malignancy. At the same time, the severity of microstructural disorders in the wall of the small intestine is associated with the stage of tumor development in the colon. Bioimaging technologies, namely, methods of optical coherence tomography and fluorescence lifetime macroimaging, made it possible to objectively display microstructural and metabolic disorders in the ileum wall. The data of optical colorectal tomography demonstrated differences in the structural picture of the intestinal villi in patients with stages 1–2 and 3 of colorectal cancer. Results of fluorescence lifetime macroimaging of the metabolic cofactor nicotinamide dinucleotide (phosphate) confirmed an increase in the role of glycolysis in the energy metabolism of enterocytes along with an increase in the stage of colorectal cancer. The identified disorders in the state of the small intestine develop in patients with colorectal cancer before surgery and are highly likely to be an important pathogenetic link of malabsorption in the postoperative period. If the hypothesis is confirmed, the developed algorithm for the complex diagnosis of microstructural and metabolic disorders in tissues will expand the possibilities for the rehabilitation of patients with cancer of the right colon.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>подвздошная кишка</kwd><kwd>флуоресцентный время-разрешенный имиджинг FLIM</kwd><kwd>оптическая когерентная томография ОКТ</kwd><kwd>метаболизм</kwd><kwd>колоректальный рак</kwd><kwd>мальабсорбция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ileum</kwd><kwd>fluorescent lifetime imaging FLIM</kwd><kwd>optical coherence tomography OCT</kwd><kwd>metabolism</kwd><kwd>colorectal cancer</kwd><kwd>malabsorption</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РНФ № 19-75-10096</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation grant no. 19-75-10096</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Palmisano S, Silvestri M, Troian M, Germani P, Giudici F, de Manzini N. 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