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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-175-3-54-59</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-1285</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>КЛИНИЧЕСКАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Имунногистохимические маркеры CDX2, CK20, CK7 в оценке тяжести поражения слизистой оболочки желудка у школьников с гастритом</article-title><trans-title-group xml:lang="en"><trans-title>Immunohistochemical markers CDX2, CK20, CK7 in the evaluation of severity lesions of the gastric mucosa in schoolchildren with gastritis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1410-8747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вшивков</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vshivkov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вшивков Виталий Алексеевич, клиническое отделение патологии пищеварительной системы у взрослых и детей, старший научный сотрудник, кандидат медицинских наук</p><p>г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Vitaly A. Vshivkov, Clinical Division of Digestive System Pathology in Adults and Children, Senior scientist, MD</p><p>Krasnoyarsk, 660022</p></bio><email xlink:type="simple">vitali1983@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/0000-0003-3842-9147</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поливанова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Polivanova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Поливанова Тамара Владимировна, клиническое отделение патологии пищеварительной системы у взрослых и детей, главный научный сотрудник, д. м. н.</p><p>г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Tamara V. Polivanova, Clinical Division of Digestive System Pathology in Adults and Children, Chief scientist, MD</p><p>Krasnoyarsk, 660022</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/0000-0002-5988-1688</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каспаров</surname><given-names>Э. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kasparov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каспаров Эдуард Вильямович, директор, д. м. н., профессор</p><p>г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Eduard V. Kasparov, Director, MD, Professor</p><p>Krasnoyarsk, 660022</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/0000-0003-1142-3933</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перетятько</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Peretyatko</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Перетятько Ольга Викторовна, клиническое отделение патологии пищеварительной системы у взрослых и детей, научный сотрудник</p><p>г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Olga V. Peretyatko, Clinical Division of Digestive System Pathology in Adults and Children, Scientist</p><p>Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Федеральный исследовательский центр “Красноярский научный центр Сибирского отделения Российской академии наук”» — Научно-исследовательский институт медицинских проблем Севера</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center “Krasnoyarsk Science Center” of the Siberian Branch of the Russian Academy of Sciences — Scientific Research Institute for Medical Problems of the North</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>22</day><month>06</month><year>2020</year></pub-date><volume>0</volume><issue>3</issue><fpage>54</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вшивков В.А., Поливанова Т.В., Каспаров Э.В., Перетятько О.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Вшивков В.А., Поливанова Т.В., Каспаров Э.В., Перетятько О.В.</copyright-holder><copyright-holder xml:lang="en">Vshivkov V.A., Polivanova T.V., Kasparov E.V., Peretyatko O.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.nogr.org/jour/article/view/1285">https://www.nogr.org/jour/article/view/1285</self-uri><abstract><sec><title>Цель</title><p>Цель. Изучить ассоциацию CDX2, CK20, CK7 с морфологическими изменениями в слизистой оболочке желудка у детей коренного и пришлого населения Республики Тыва с гастритом.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Обследованы дети с гастроэнтерологическими жалобами 2 этнических групп: 69 коренных и 34 пришлых, которым проведена эзофагогастродуоденоскопия с забором биопсий из антрального отдела и тела желудка. Диагностика гастрита осуществлялась по модифицированной Сиднейской классификации. H. pylori определяли после покраски биопсийных срезов по Гимзе. Иммуногистохимическим методом регистрировали экспрессию биомаркеров (CDX2, CK20, CK7). Анализ статистической значимости различий качественных признаков проведен с помощью критерия χ2.</p></sec><sec><title>Результаты</title><p>Результаты. У 4 школьников Республики Тыва определялась экспрессия CDX2, учитывая тесную связь которого с метаплазией и атрофией в СОЖ у взрослых, его можно рассматривать в качестве маркера и определять группу детей для динамического наблюдения с неблагоприятным прогнозом. Установлена ассоциация экспрессии CK20, CK7 с активностью гастрита, инфицированием H. pylori, метаплазией в СОЖ, но более тесно выраженная у тувинцев, что свидетельствует об интенсификации у них пролиферативных процессов в СОЖ. Данный факт объясняет ускорение прогрессирования воспалительного процесса в тело желудка, что, в свою очередь, сопряжено с увеличением риска развития дистрофии и атрофии в СОЖ.</p></sec><sec><title>Заключение</title><p>Заключение. CDX2, CK20, CK7 могут выступать биомаркерами развития предраковых состояний желудка у школьников Тывы, особенно у тувинцев. При этом наличие атрофии, метаплазии или белка CDX2 является прогностически неблагоприятным фактором.</p></sec></abstract><trans-abstract xml:lang="en"><p>The aim is study the association of CDX2, CK20, CK7 with morphological changes in the gastric mucosa at children of aboriginal and newcomer population of the Republic of Tuva with gastritis.</p><sec><title>Materials and methods</title><p>Materials and methods. We examined of children with gastroenterological complaints by 2 ethnic groups: 69 aboriginal and 34 immigrants. All underwent esophagogastroduodenoscopy with sampling of biopsies from the antral region and the body of the stomach. Diagnosis of gastritis was carried out according to the modified Sydney classification. H. pylori was determined of coloring the biopsies by Gimza. Expression of biomarkers was recorded by immunohistochemical method (CDX2, CK20, CK7). The analysis of the statistical significance of differences in qualitative characteristics was carried out using the criterion χ2.</p></sec><sec><title>Results</title><p>Results. We had determined the expression of CDX2 in 4 schoolchildren in the Republic of Tuva. This is can be examined as a marker for dynamic observation with a poor prognosis, because marker CDX2 tight connect with metaplasia and atrophy in gastric mucosa at adults. Association of the expression of CK20 and CK7 was established with the activity of gastritis, infection H. pylori, metaplasia of gastric mucosa, what more expressed by Tuva population. This has been testifying of the intensification proliferative processes in the gastric mucosa. This fact explaining the acceleration of progression the inflammatory process into the body of stomach. All it’s associated with an increased risk of dystrophy and atrophy at the gastric mucosa.</p></sec><sec><title>Conclusion</title><p>Conclusion. CDX2 CK20, CK7 can to act as biomarkers of development the precancerous damage of stomach in schoolchildren of Tuva, especially by Tuvans. The presence of atrophy, metaplasia or CDX2 protein is a prognostically unfavorable factor.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>биомаркеры</kwd><kwd>дети</kwd><kwd>этнос</kwd><kwd>гастрит</kwd><kwd>метаплазия</kwd><kwd>инфекция Helicobacter pylori</kwd></kwd-group><kwd-group xml:lang="en"><kwd>biomarkers</kwd><kwd>children</kwd><kwd>ethnicity</kwd><kwd>gastritis</kwd><kwd>metaplasia</kwd><kwd>Helicobacter pylori</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">Щербаков П. Л. Современные проблемы подростковой гастроэнтерологии. Педиатрия. 2010;2:6–11.</mixed-citation><mixed-citation xml:lang="en">Shcherbakov P. L. Sovremennye problemy podrostkovoy gastroenterologii [Modern problems of teenage gastroenterology]. 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