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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">gastro-j</journal-id><journal-title-group><journal-title xml:lang="ru">Российский журнал гастроэнтерологии, гепатологии, колопроктологии</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Gastroenterology, Hepatology, Coloproctology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1382-4376</issn><issn pub-type="epub">2658-6673</issn><publisher><publisher-name>«Gastro» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22416/1382-4376-2025-35-4-48-59</article-id><article-id custom-type="elpub" pub-id-type="custom">gastro-j-1581</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 ИССЛЕДОВАНИЯ</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>Микросателлитная нестабильность при хроническом гастрите, ассоциированном с раком желудка</article-title><trans-title-group xml:lang="en"><trans-title>Microsatellite Instability in Chronic Gastritis Associated with Gastric 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/0000-0001-8607-7831</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кононов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kononov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кононов Алексей Владимирович — доктор медицинских наук, профессор, заведующий кафедрой патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Alexei V. Kononov — Dr. Sci. (Med.), Professor, Head of the Departmentof Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">ogmapath@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/0000-0003-1834-3629</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рубцов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rubtsov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рубцов Вячеслав Александрович — кандидат медицинских наук, доцент кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Vyacheslav A. Rubtsov — Сand. Sci. (Med.), Associate Professor at the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">rubtsov.omgmu@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/0009-0008-9957-5889</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демидова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Демидова Елизавета Вячеславовна — кандидат биологических наук, младший научный сотрудник, лаборатория ПЦР</p><p>630117, г. Новосибирск-117, а/я 492</p></bio><bio xml:lang="en"><p>Elizaveta V. Demidova — Сand. Sci. (Biol.), Junior Researcher, PCR Laboratory</p><p>630117, Novosibirsk-117, P.O. Box 492</p></bio><email xlink:type="simple">DemidovaE@vector-best.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/0000-0001-8006-3260</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парыгина</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Parygina</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парыгина Мария Николаевна — кандидат медицинских наук, ассистент кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Maria N. Parygina — Сand. Sci. (Med.), Teaching Assistant at the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">mariyakern@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0949-8709</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шиманская</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shimanskaya</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шиманская Анна Геннадьевна — кандидат медицинских наук, доцент, доцент кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Anna G. Shimanskaya — Сand. Sci. (Med.), Docent, AssociateProfessor at the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">shimansckaya.anna@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/0000-0001-7200-7082</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мозговой</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mozgovoi</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мозговой Сергей Игоревич — доктор медицинских наук, доцент, профессор кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Sergei I. Mozgovoi — Dr. Sci. (Med.), Docent, Professorat the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">simozgovoy@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/0000-0002-9857-1674</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поморгайло</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Pomorgailo</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Поморгайло Елена Геннадьевна — доктор биологических наук, доцент, профессор кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Elena G. Pomorgailo — Dr. Sci. (Biol.), Docent, Professorat the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">elenapom@bk.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/0000-0002-0316-4153</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маркелова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Markelova</surname><given-names>М. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маркелова Марина Владимировна — кандидат медицинских наук, доцент, доцент кафедры патологической анатомии</p><p>644099, г. Омск, ул. Ленина, 12</p></bio><bio xml:lang="en"><p>Marina V. Markelova — Сand. Sci. (Med.), Docent, Associate Professor at the Department of Pathological Anatomy</p><p>644099, Omsk, Lenina str., 12</p></bio><email xlink:type="simple">marina.markelova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Омский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>АО «Вектор-Бест»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Vector-Best</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>10</month><year>2025</year></pub-date><volume>35</volume><issue>4</issue><fpage>48</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кононов А.В., Рубцов В.А., Демидова Е.В., Парыгина М.Н., Шиманская А.Г., Мозговой С.И., Поморгайло Е.Г., Маркелова М.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кононов А.В., Рубцов В.А., Демидова Е.В., Парыгина М.Н., Шиманская А.Г., Мозговой С.И., Поморгайло Е.Г., Маркелова М.В.</copyright-holder><copyright-holder xml:lang="en">Kononov A.V., Rubtsov V.A., Demidova E.V., Parygina M.N., Shimanskaya A.G., Mozgovoi S.I., Pomorgailo E.G., Markelova М.V.</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.gastro-j.ru/jour/article/view/1581">https://www.gastro-j.ru/jour/article/view/1581</self-uri><abstract><p>Цель: оценка статуса микросателлитной нестабильности в слизистой оболочке желудка для определения возможности ее использования как предиктивного маркера канцерогенеза.Материал и методы. В исследование включено две группы биоптатов слизистой оболочки желудка: группа 1 — 155 фрагментов слизистой оболочки дистантной зоны опухолевого роста, полученных из желудков, резецированных по поводу злокачественного новообразования; группа 2 — 100 фрагментов с признаками хронического гастрита, взятых у пациентов с диспептическими жалобами. Гастробиоптаты исследовали гистологическим, иммуногистохимическим методами с использованием мышиных моноклональных антител (Diagnostic BioSystems, США) к белкам системы MMR: MLH-1 (клон G168-15, разведение 1:50), MSH2 (клон DBM15.82, разведение 1:100), MSH6 (клон 44, разведение 1:50), PMS2 (клон А16-4, готовые к применению). MSI исследовали методом мультиплексной ПЦР с получением ДНК-фрагментов микросателлитов (NR-21, NR-24, NR-27, BAT-25, BAT-26) из парафиновых срезов и их анализа методом капиллярного электрофореза. Полученные данные обработаны с применением пакета Statistica 10.0 (StatSoft Inc., США), представлены с использованием методов описательной, аналитической статистики.Результаты. При иммуногистохимическом исследовании во фрагментах слизистой оболочки желудка группы 1 выявлено 8 микросателлит-нестабильных случаев, в группе 2 — 0 случаев (отличия статистически значимы, p = 0,024). Все исследованные образцы ткани желудка расценили как микросателлит-стабильные по результатам ПЦР.Выводы. Обнаружение MMR-дефицита в слизистой оболочке желудка дистантной зоны опухолевого роста и его отсутствие в морфологически сопоставимых фрагментах, полученных от пациентов с хроническим гастритом, может рассматриваться как подтверждение гипотезы о нарушениях в системе MMR как о раннем событии в канцерогенезе. Это, в свою очередь, может указывать на наличие потенциала исследования MMR-статуса как компонента системы поддержки принятия решения оценки риска развития рака желудка, ассоциированного с микросателлитной нестабильностью.</p></abstract><trans-abstract xml:lang="en"><p>Aim: to assess the microsatellite instability status in gastric mucosa to determine the possibility of its use as a predictive marker of carcinogenesis.Material and methods. The study included two groups of gastric mucosa specimens: Group 1 — 155 mucosa fragments of the distant tumor growth zone obtained from stomachs resected for malignant neoplasms; Group 2 — 100 fragments with chronic gastritis taken from patients with dyspeptic complaints. Gastrobiopsy specimens were examined histologically, immunohistochemically using mouse monoclonal antibodies (Diagnostic BioSystems, USA) to the MMR system proteins: MLH-1 (clone G168-15, dilution 1:50), MSH2 (clone DBM15.82, dilution 1:100), MSH6 (clone 44, dilution 1:50), PMS2 (clone A16-4, ready to use). MSI was studied with multiplex PCR evaluation of DNA microsatellites (NR-21, NR-24, NR-27, BAT-25, BAT-26) from paraffin sections, their analysis with capillary electrophoresis. The obtained data were processed with the Statistica 10.0 (StatSoft Inc., USA), presented using descriptive, analytical statistics.Results. Immunohistochemical examination revealed 8 microsatellite-unstable cases in gastric mucosa specimens of Group 1 and 0 cases in Group 2 (statistically significant differences, p = 0.024). All studied gastric tissue samples were assessed as microsatellite-stable based on PCR results.Conclusion. Detection of MMR deficiency in gastric mucosa of the distant tumor growth zone and its absence in morphologically comparable specimens obtained from patients with chronic gastritis may be considered as confirmation of the hypothesis of disturbances in the MMR system as an early event in carcinogenesis. This, in turn, may indicate the potential for studying MMR status as a component of a decision support system for assessing the risk of developing microsatellite-associated gastric cancer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>микросателлитная нестабильность</kwd><kwd>хронический гастрит</kwd><kwd>предраковые изменения</kwd><kwd>кишечная метаплазия</kwd><kwd>атрофия</kwd><kwd>рак желудка</kwd><kwd>канцерпревенция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>microsatellite instability</kwd><kwd>chronic gastritis</kwd><kwd>precancerous lesions</kwd><kwd>intestinal metaplasia</kwd><kwd>atrophy</kwd><kwd>gastric cancer</kwd><kwd>cancer prediction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">исследование выполнено при финансовой поддержке гранта Российского научного фонда «Микросателлитная нестабильность в слизистой оболочке желудка при ранних и выраженных предраковых изменениях как молекулярно-генетическая основа персонифицированной оценки риска развития рака желудка», № 23-25-10036 от 20.04.2023, соглашение с Министерством промышленности и научно-технического развития Омской области № 33-с от 19.06.2023.</funding-statement><funding-statement xml:lang="en">the study was carried out with the financial support of a grant from the Russian Science Foundation “Microsatellite instability in the gastric mucosa during early and pronounced precancerous changes as a molecular genetic basis for personalized assessment of the risk of developing stomach cancer”, registration No. 23-25-10036; the agreement with the Ministry of Industry and Scientific and Technical Development of the Omsk Region No. 33-s dated 19.06.2023.</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">Luchini C., Bibeau F., Ligtenberg M.J.L., Singh N., Nottegar A., Bosse T., et al. 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