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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="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Russian Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-2106</issn><issn publication-format="electronic">2412-9100</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">677754</article-id><article-id pub-id-type="doi">10.17816/medjrf677754</article-id><article-id pub-id-type="edn">HWLEGP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Научные обзоры</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Relationship between Crohn’s disease and gut microbiota in the elderly: a literature review</article-title><trans-title-group xml:lang="ru"><trans-title>Взаимосвязь болезни Крона и микробиоты кишечника у лиц пожилого возраста. Литературный обзор</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-2498-5182</contrib-id><name-alternatives><name xml:lang="en"><surname>Borodkina</surname><given-names>Lidiia V.</given-names></name><name xml:lang="ru"><surname>Бородкина</surname><given-names>Лидия Вадимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>borodkinalv00@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-7880-8314</contrib-id><name-alternatives><name xml:lang="en"><surname>Vereschagina</surname><given-names>Alexandra D.</given-names></name><name xml:lang="ru"><surname>Верещагина</surname><given-names>Александра Дмитриевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexver20010419@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-2652-6279</contrib-id><name-alternatives><name xml:lang="en"><surname>Vladimirova</surname><given-names>Veronica S.</given-names></name><name xml:lang="ru"><surname>Владимирова</surname><given-names>Вероника Станиславовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vladimirovav19@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-7145-4718</contrib-id><name-alternatives><name xml:lang="en"><surname>Dulepova</surname><given-names>Regina V.</given-names></name><name xml:lang="ru"><surname>Дулепова</surname><given-names>Регина Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>reginakrrz@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9939-3443</contrib-id><contrib-id contrib-id-type="spin">9133-3802</contrib-id><name-alternatives><name xml:lang="en"><surname>Raevskii</surname><given-names>Kirill P.</given-names></name><name xml:lang="ru"><surname>Раевский</surname><given-names>Кирилл Павлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>raevskiikp@my.msu.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-9568-1322</contrib-id><name-alternatives><name xml:lang="en"><surname>Smirnova</surname><given-names>Tatyana K.</given-names></name><name xml:lang="ru"><surname>Смирнова</surname><given-names>Татьяна Константиновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>frutany91@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-5932-3850</contrib-id><name-alternatives><name xml:lang="en"><surname>Shelyakina</surname><given-names>Alina V.</given-names></name><name xml:lang="ru"><surname>Шелякина</surname><given-names>Алина Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shelyakinalina@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">I.P. Pavlov First St. Petersburg State Medical University</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">North-Western State Medical University named after I.I. Mechnikov</institution></aff><aff><institution xml:lang="ru">Северо-Западный государственный медицинский университет имени И.И. Мечникова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Saint-Petersburg State Pediatric Medical University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный педиатрический медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-06-17" publication-format="electronic"><day>17</day><month>06</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2025</year></pub-date><volume>31</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>407</fpage><lpage>414</lpage><history><date date-type="received" iso-8601-date="2025-03-26"><day>26</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-06-05"><day>05</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</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="2028-09-08"/></permissions><self-uri xlink:href="https://medjrf.com/0869-2106/article/view/677754">https://medjrf.com/0869-2106/article/view/677754</self-uri><abstract xml:lang="en"><p>Crohn disease is a chronic inflammatory disease of the gastrointestinal tract that develops as a result of complex interaction between the immune system and the gut microbiota. The incidence of the disease has recently increased, especially in the young and elderly population.</p> <p>This article examines current data on microbiota changes in patients with Crohn disease with an emphasis on the elderly population and the influence of the intestinal microflora composition on the disease course. An analysis of literature over the past 5 years from scientific databases, such as Medline, PubMed Central, eLIBRARY.RU, and Cyberleninka, has shown that the intestinal dysbiosis characteristic of the majority of patients with Crohn disease leads to a decrease in bacterial diversity and excessive growth of pathogenic microorganisms. In addition to the bacterial flora, an important role in the pathogenesis and course of the disease play fungi, viruses, and parasites, which is directly related to the worsening of the condition. The findings emphasize the importance of studying the role of microbiota in the development and course of the disease, which may contribute to the development of new treatment and prevention options.</p></abstract><trans-abstract xml:lang="ru"><p>Болезнь Крона является хроническим воспалительным заболеванием желудочно-кишечного тракта, развивающимся на фоне сложного взаимодействия между иммунной системой и микробиотой кишечника. В последние годы наблюдается рост заболеваемости болезнью Крона, особенно среди лиц молодого и пожилого возраста.</p> <p>В обзоре рассмотрены актуальные данные об изменениях микробиоты кишечника у пациентов с болезнью Крона с акцентом на пожилых лиц, а также изучено влияние состава микрофлоры кишечника на особенности течения заболевания. Анализ статей за последние 5 лет из научных баз данных MEDLINE, PubMed Central, eLIBRARY.RU, «Киберленинка» показал, что дисбиоз кишечной микробиоты, характерный для большинства пациентов с болезнью Крона, приводит к снижению разнообразия бактерий и избыточному росту патогенных микроорганизмов. Помимо бактериальной флоры, важную роль в патогенезе и течении болезни Крона играют грибы, вирусы и паразиты, что непосредственно связано с ухудшением течения заболевания. Полученные данные подчёркивают важность изучения роли микробиоты в развитии и особенностях течения болезни Крона, что может способствовать разработке новых подходов к терапии и профилактике данного заболевания.</p></trans-abstract><kwd-group xml:lang="en"><kwd>microbiota</kwd><kwd>Crohn's disease</kwd><kwd>diagnosis of Crohn's disease</kwd><kwd>course of Crohn's disease</kwd><kwd>elderly people</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>микробиота</kwd><kwd>болезнь Крона</kwd><kwd>диагностика болезни Крона</kwd><kwd>течение болезни Крона</kwd><kwd>пожилые люди</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lagutina SN, Zuikova AA, Dobrynina IS, et al. Changes in the intestinal microbiota as a predictor of the development of colorectal cancer in the elderly persons: a case study. 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