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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-240-8-175-194</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-3434</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>ЛЕКЦИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LECTION</subject></subj-group></article-categories><title-group><article-title>Профилактика гепатотоксичности алюминия комплексом окисленного пектина и оксиметилурацила: экспериментальное исследование у крыс</article-title><trans-title-group xml:lang="en"><trans-title>Prevention of aluminum-induced hepatotoxicity by a complex of oxidized pectin and oxymethyluracil: an experimental study in rats</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1236-8246</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якупова</surname><given-names>Т. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakupova</surname><given-names>T. G.</given-names></name></name-alternatives><email xlink:type="simple">tanya.kutlina.92@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/0000-0002-7321-0864</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гизатуллина</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gizatullina</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-1962-2323</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каримов</surname><given-names>Д. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Karimov</surname><given-names>D. D.</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/0000-0002-7456-4787</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухаммадиева</surname><given-names>Г. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Muhammadieva</surname><given-names>G. F.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0001-5596-8180</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хуснутдинова</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Khusnutdinova</surname><given-names>N. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-7957-2399</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смолянкин</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smolyankin</surname><given-names>D. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-3885-041X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зимин</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zimin</surname><given-names>Yu. S.</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/0000-0001-7672-621X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кутлугильдина</surname><given-names>Г. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kutlugildina</surname><given-names>G. G.</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/0000-0003-0039-6757</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каримов</surname><given-names>Д. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Karimov</surname><given-names>D. O.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное бюджетное учреждение науки «Уфимский научно-исследовательский институт медицины труда и экологии человека»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ufa Research Institute of Occupational Health and Human Ecology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное бюджетное учреждение науки «Уфимский научно-исследовательский институт медицины труда и экологии человека»; Федеральное государственное бюджетное образовательное учреждение высшего образования «Уфимский университет науки и технологий»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ufa Research Institute of Occupational Health and Human Ecology; Ufa University of Science and Technology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Уфимский университет науки и технологий»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ufa University of Science and Technology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Федеральное бюджетное учреждение науки «Уфимский научно-исследовательский институт медицины труда и экологии человека»; Федеральное государственное бюджетное научное учреждение «Национальный научно-исследовательский институт общественного здоровья имени Н. А. Семашко»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ufa Research Institute of Occupational Health and Human Ecology; N.A. Semashko National Research Institute of Public Health</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>08</month><year>2026</year></pub-date><volume>0</volume><issue>8</issue><fpage>175</fpage><lpage>194</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Якупова Т.Г., Гизатуллина А.А., Каримов Д.Д., Мухаммадиева Г.Ф., Хуснутдинова Н.Ю., Смолянкин Д.А., Зимин Ю.С., Кутлугильдина Г.Г., Каримов Д.О., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Якупова Т.Г., Гизатуллина А.А., Каримов Д.Д., Мухаммадиева Г.Ф., Хуснутдинова Н.Ю., Смолянкин Д.А., Зимин Ю.С., Кутлугильдина Г.Г., Каримов Д.О.</copyright-holder><copyright-holder xml:lang="en">Yakupova T.G., Gizatullina A.A., Karimov D.D., Muhammadieva G.F., Khusnutdinova N.Y., Smolyankin D.A., Zimin Y.S., Kutlugildina G.G., Karimov D.O.</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/3434">https://www.nogr.org/jour/article/view/3434</self-uri><abstract><p>Цель исследования - экспериментально оценить профилактический эффект комплекса окисленного пектина и оксиметилурацила при хронической гепатотоксичности алюминия у крыс по молекулярным и биохимическим показателям. Материалы и методы. Эксперимент проводили на 56 аутбредных крысах-самках при пероральном введении гидроксида алюминия в дозе 15 мг/кг и хелатного комплекса окисленного пектина с оксиметилурацилом (50 мг/кг) в различных профилактических и постэкспозиционных режимах в течение 3-4 месяцев. Экспрессию генов металлотионеинов (Mt1, Mt2, Mt3) и транспортеров цинка (Zip1, Zip8) в ткани печени определяли методом ПЦР в реальном времени с использованием специфичных праймеров, интеркалирующего красителя SYBR Green и референтного гена Gapdh. В сыворотке крови оценивали активность АСТ, АЛТ, ЩФ, ЛДГ; статистический анализ проводили в пакете IBM SPSS Statistics 21 с применением однофакторного дисперсионного анализа (ANOVA) при критическом уровне значимости p=0,05. Результаты. В нашем исследовании хроническое воздействие алюминия сопровождалось повышением экспрессии гена Zip1 в печени, тогда как непрерывное введение комплекса окисленного пектина с оксиметилурацилом нормализовало её до контрольных значений; экспрессия Zip8 и генов металлотионеинов Mt1a, Mt2a и Mt3a статистически значимо не изменялась между группами. На биохимическом уровне данный комплекс в профилактическом режиме способствовал снижению активности АСТ и ЛДГ. Заключение. Комплекс окисленного пектина с оксиметилурацилом в модели хронического воздействия гидроксида алюминия у крыс нормализует экспрессию гена Zip1 и снижает активность АСТ и ЛДГ. Для уточнения органопротекторных механизмов комплекса требуются дальнейшие исследования с расширенным набором морфологических и молекулярных маркеров.</p></abstract><trans-abstract xml:lang="en"><p>Objective - The aim of the study was to experimentally assess the preventive effect of a complex of oxidized pectin and oxymethyluracil on chronic aluminum-induced hepatotoxicity in rats based on molecular and biochemical parameters. Materials and Methods. The experiment was conducted on 56 outbred female rats that received oral administration of aluminum hydroxide at a dose of 15 mg/kg and a chelate complex of oxidized pectin with oxymethyluracil (50 mg/kg) under various preventive and post-exposure regimens for 3-4 months. The expression of metallothionein genes (Mt1, Mt2, Mt3) and zinc transporter genes (Zip1, Zip8) in liver tissue was determined by real-time PCR using specific primers, SYBR Green intercalating dye, and the reference gene Gapdh. Serum activity of AST, ALT, ALP, and LDH was measured; statistical analysis was performed using IBM SPSS Statistics 21 software with one-way ANOVA at a critical significance level of p=0,05. Results. In our study, chronic aluminum exposure was associated with an increase in Zip1 gene expression in the liver, whereas continuous administration of the oxidized pectin-oxymethyluracil complex normalized its expression to control levels. The expression of Zip8 and metallothionein genes (Mt1a, Mt2a, Mt3a) did not change significantly among the experimental groups. At the biochemical level, this complex, when used preventively, contributed to a reduction in AST and LDH activity. Conclusion. The oxidized pectin-oxymethyluracil complex in a rat model of chronic aluminum hydroxide exposure normalizes Zip1 gene expression and reduces AST and LDH activity. Further studies using an expanded set of morphological and molecular markers are required to clarify the organoprotective mechanisms of the complex.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гидроксид алюминия</kwd><kwd>гепатотоксичность</kwd><kwd>комплекс окисленного пектина с оксиметилурацилом</kwd><kwd>Zip1</kwd><kwd>металлотионеины</kwd><kwd>биохимические показатели крови</kwd><kwd>крысы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>aluminum hydroxide</kwd><kwd>hepatotoxicity</kwd><kwd>oxidized pectin-oxymethyluracil complex</kwd><kwd>Zip1</kwd><kwd>metallothioneins</kwd><kwd>blood biochemical parameters</kwd><kwd>rats</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">Alasfar R. H., Isaifan R. J. Aluminum environmental pollution: the silent killer. 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