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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">cfpd</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень физиологии и патологии дыхания</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin Physiology and Pathology of Respiration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-5029</issn><publisher><publisher-name>Дальневосточный научный центр физиологии и патологии дыхания</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36604/1998-5029-2026-100-102-111</article-id><article-id custom-type="elpub" pub-id-type="custom">cfpd-1347</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 RESEARCH</subject></subj-group></article-categories><title-group><article-title>Патофизиологические особенности свободно-радикального окисления у беременных женщин коренного и пришлого населения Приамурья на фоне дефицита тканевого железа в I и II триместрах</article-title><trans-title-group xml:lang="en"><trans-title>Pathophysiological features of free radical oxidation in pregnant women of indigenous and non-indigenous populations of the Amur region with tissue iron deficiency during the first and second trimesters</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6724-3654</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Супрун</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Suprun</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Стефания Викторовна Супрун, д-р мед. наук, главный научный сотрудник группы медико-экологических проблем здоровья матери и ребенка лаборатории комплексных методов исследования бронхолегочной и перинатальной патологии</p><p>680022, г. Хабаровск, ул. Воронежская 49, корп. 1 </p></bio><bio xml:lang="en"><p>Stefania V. Suprun, MD, PhD, DSc (Med.), Main Staff Scientist of the Group of Health and Environmental Problems of Mother and Child Health, Laboratory of Integral Methods of Bronchopulmonary and Perinatal Pathology Research</p><p>49/1 Voronezhskaya Str., Khabarovsk, 680022 </p></bio><email xlink:type="simple">evg-suprun@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/0000-0002-6366-861X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудряшова</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudryashova</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оксана Степановна Кудряшова, аспирант </p><p>680022, г. Хабаровск, ул. Воронежская 49, корп. 1 </p></bio><bio xml:lang="en"><p>Oksana S. Kudryashova, Postgraduate student </p><p>49/1 Voronezhskaya Str., Khabarovsk, 680022 </p></bio><email xlink:type="simple">Kelemen_84@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/0000-0002-8855-7422</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лебедько</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebed’ko</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ольга Антоновна Лебедько, д-р мед. наук, директор </p><p>680022, г. Хабаровск, ул. Воронежская 49, корп. 1 </p></bio><bio xml:lang="en"><p>Olga A. Lebed’ko, MD, PhD, D.Sc. (Med.), Director </p><p>49/1 Voronezhskaya Str., Khabarovsk, 680022 </p></bio><email xlink:type="simple">leoaf@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Космачева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosmacheva</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александра Викторовна Космачева, врач акушер-гинеколог </p><p>680022, г. Хабаровск, ул. Воронежская 49, корп. 1 </p></bio><bio xml:lang="en"><p>Alexandra V. Kosmacheva, MD, Obstetrician-gynecologist </p><p>49/1 Voronezhskaya Str., Khabarovsk, 680022 </p></bio><email xlink:type="simple">iomid@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Хабаровский филиал Федерального государственного бюджетного научного учреждения «Дальневосточный научный центр физиологии и патологии дыхания – Научно исследовательский институт охраны материнства и детства</institution></aff><aff xml:lang="en"><institution>Khabarovsk Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Research Institute of Maternity and Childhood Protection</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2026</year></pub-date><volume>0</volume><issue>100</issue><fpage>102</fpage><lpage>111</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Супрун С.В., Кудряшова О.С., Лебедько О.А., Космачева А.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Супрун С.В., Кудряшова О.С., Лебедько О.А., Космачева А.В.</copyright-holder><copyright-holder xml:lang="en">Suprun S.V., Kudryashova O.S., Lebed’ko O.A., Kosmacheva A.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://cfpd.elpub.ru/jour/article/view/1347">https://cfpd.elpub.ru/jour/article/view/1347</self-uri><abstract><sec><title>Введение</title><p>Введение. Окислительный стресс при гестации является физиологическим адаптационным процессом: на ранних сроках он оказывает регулирующее воздействие на инвазию трофобласта, ремоделирование спиральных артерий и органогенез. Дефицит железа (ДЖ), как многофункционального микроэлемента, сопряжен не только с риском развития гемической и тканевой гипоксии, но и с дисбалансом систем свободнорадикального окисления (СРО) и антиоксидантной защиты (АОЗ).</p></sec><sec><title>Цель</title><p>Цель. Выявить особенности процессов свободно-радикального окисления и антиоксидантной защиты при железодефицитных состояниях у беременных женщин коренного и пришлого населения Приамурья при первичном обращении в периоды, соответствующие условным волнам цитотрофобластной инвазии (I и II триместры).</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Обследовано 177 впервые обратившихся в I и II триместрах беременных женщин, проживающих в городской местности (г. Хабаровск) и сельских районах (Нанайский район) Приамурья. Сформированы 3 группы с учетом места проживания и этнической принадлежности: 1 – городские пришлые – европеоиды (n = 59); 2 – сельские пришлые – европеоиды (n = 60); 3 – сельские коренные – нанайки, малые народности Приамурья – монголоиды (n = 58). Сывороточный ферритин определяли иммуноферментным методом, показатели СРО (Ssp – общая интенсивность генерации активных форм кислорода, Sind1 – скорость образования перекисных радикалов, h1 – содержание гидроперекисей липидов) и АОЗ (Sind2 – активность антиоксидантной антирадикальной системы защиты, h2 – перекисная резистентность субстрата) – с использованием хемилюминесцентного анализа.</p></sec><sec><title>Результаты</title><p>Результаты. Во всех группах отмечалась достоверно большая частота встречаемости ДЖ во II триместре, особенно у сельских пришлых и коренных женщин. Экологически положительное своеобразие процессов СРО-АОЗ выявлялось у сельских пришлых беременных: в I триместре достоверно более низкие значения СРО (Ssp, Sind1, особенно h1) при высоких показателях антирадикальной защиты и перекисной резистентности. Во II триместре такая закономерность была менее выражена. Этнические особенности показателей были зарегистрированы у коренных пациенток Приамурья и заключалась в сочетании более высокого уровня СРО (Ssp, Sind1) и низкого АОЗ (Sind2, h2) в I триместре по сравнению со II.</p></sec><sec><title>Заключение</title><p>Заключение. Выявленные эколого-этнические особенности состояния системы СРО-АОЗ на фоне дефицита железа указывают на необходимость учета полученных данных при проведении лечебно-профилактических мероприятий у беременных женщин в Дальневосточном регионе.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Oxidative stress during gestation is a physiological adaptive process: in early pregnancy, it regulates trophoblast invasion, spiral artery remodeling, and organogenesis. Iron deficiency (ID), as a multifunctional trace element, is associated not only with the risk of hemogenic and tissue hypoxia but also with an imbalance between free radical oxidation (FRO) and antioxidant defense (AOD) systems.</p></sec><sec><title>Aim</title><p>Aim. To identify the characteristics of FRO and AOD processes in iron-deficient states among pregnant women of indigenous and non-indigenous populations of the Amur region at initial antenatal visits corresponding to the conditional waves of cytotrophoblast invasion (first and second trimesters).</p></sec><sec><title> Materials and methods</title><p> Materials and methods. The study included 177 pregnant women newly registered in the first or second trimester, residing in urban (Khabarovsk city) and rural areas (Nanai District) of the Amur region. Three groups were formed based on residence and ethnicity: Group 1 – urban non-indigenous women of European descent (n = 59); Group 2 – rural non-indigenous women of European descent (n = 60); Group 3 – rural indigenous women (Nanai, small-numbered ethnic groups of the Amur region, Mongoloid race) (n = 58). Serum ferritin was measured by enzyme-linked immunosorbent assay. FRO parameters–total intensity of reactive oxygen species generation (Ssp), rate of peroxyl radical formation (Sind1), and lipid hydroperoxide content (h1) and AOD parameters–antiradical defense activity (Sind2) and substrate peroxide resistance (h2) were assessed using chemiluminescence analysis.</p></sec><sec><title>Results</title><p>Results. Iron deficiency was significantly more prevalent in the second trimester across all groups, particularly among rural non-indigenous and indigenous women. An environmentally favorable FRO–AOD profile was observed in rural non-indigenous pregnant women: in the first trimester, they exhibited significantly lower FRO values (Ssp, Sind1, especially h1) alongside high antiradical defense activity and peroxide resistance. This pattern was less pronounced in the second trimester. Ethnic-specific features were noted in indigenous women, characterized by higher FRO (Ssp, Sind1) and lower AOD (Sind2, h2) in the first trimester compared to the second.</p></sec><sec><title>Conclusion</title><p>Conclusion. The identified eco-ethnic characteristics of the FRO–AOD system under iron deficiency highlight the need to consider these findings when designing preventive and therapeutic strategies for pregnant women in the Russian Far East. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>свободнорадикальное окисление</kwd><kwd>антиоксидантная защита</kwd><kwd>дефицит железа</kwd><kwd>ферритин</kwd><kwd>беременные женщины</kwd><kwd>коренное население</kwd><kwd>пришлое население</kwd><kwd>Приамурье</kwd></kwd-group><kwd-group xml:lang="en"><kwd>free radical oxidation</kwd><kwd>antioxidant protection</kwd><kwd>iron deficiency</kwd><kwd>ferritin</kwd><kwd>pregnant women</kwd><kwd>indigenous and newcomer’s population of the Amur region</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">Chiarello D.I., Abad C., Rojas D., Toledo F., Vázquez C.M., Mate A., Sobrevia L., Marín R. 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