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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">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2016-31-2-110-113</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-40</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>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ УСТОЙЧИВОСТИ МИТОХОНДРИЙ МИОКАРДА К ИШЕМИЧЕСКОМУ-РЕПЕРФУЗИОННОМУ ПОВРЕЖДЕНИЮ СЕРДЦА У КРЫС, АДАПТИРОВАННЫХ К ХРОНИЧЕСКОЙ ГИПОКСИИ</article-title><trans-title-group xml:lang="en"><trans-title>RESISTANCE OF MYOCARDIAL MITOCHONDRIA IN ISCHEMIA-REPERFUSION INJURY OF THE HEART IN RATS ADAPTED TO CHRONIC HYPOXIA</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прокудина</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Prokudina</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>лаборатория экспериментальной кардиологии</p><p>младший научный сотрудник </p><p>Адрес: 634012, г. Томск, ул. Киевская, 111а</p></bio><email xlink:type="simple">goddess27@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение “Научно-исследовательский институт кардиологии”, Томск<country>Россия</country></aff><aff xml:lang="en">Federal State Budgetary Scientific Institution “Research Institute for Cardiology”, Tomsk<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>05</day><month>09</month><year>2016</year></pub-date><volume>31</volume><issue>2</issue><fpage>110</fpage><lpage>113</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Прокудина Е.С., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Прокудина Е.С.</copyright-holder><copyright-holder xml:lang="en">Prokudina E.S.</copyright-holder><license 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.sibjcem.ru/jour/article/view/40">https://www.sibjcem.ru/jour/article/view/40</self-uri><abstract><p>Исследованы параметры дыхания, величина трансмембранного потенциала и Са2 +-связывающая способность митохондрий, выделенных из миокарда перфузируемых по методу Лангендорфа сердец крыс, адаптированных к хронической непрерывной нормобарической гипоксии. Моделирование ишемии и реперфузии как у интактных, так и у адаптированных животных приводило к снижению Са2 +-связывающей способности митохондрий, что указывает на увеличение чувствительности МРТ-пор (mitochondrial permeability transition pore) к ионам кальция. В то же время зафиксировано: снижение трансмембранного потенциала, уменьшение коэффициента АДФ/О (соотношение количественных величин добавленного АДФ и поглощенного в течение состояния 3 кислорода) и замедление дыхания митохондрий в состоянии 3. Вместе с тем наблюдалось, что адаптация животных к хронической гипоксии способствует повышению устойчивости митохондрий миокарда к негативному влиянию ишемии и реперфузии. </p></abstract><trans-abstract xml:lang="en"><p>The parameters of respiration, the value of the transmembrane potential, and Са2 +-binding capacity of the mitochondria isolated from the Langendorff(perfused hearts of rats adapted to chronic continuous normobaric hypoxia were analyzed. Modeling of ischemia and reperfusion in intact and adapted animals resulted in reduced Са2 +-binding capacity of mitochondria, indicating an increase in the sensitivity of mitochondrial permeability transition pore (MPT(pore) to calcium ions. At the same time, reduction in transmembrane potential, reduction in ADP/O ratio (the ratio of added ADP to oxygen consumption in State 3), and inhibition of mitochondrial state 3 respiration were observed. Along with that, the study demonstrated that the adaptation of animals to chronic hypoxia promotes the resistance of myocardial mitochondria to the negative effects of ischemia and reperfusion. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>сердце</kwd><kwd>ишемия</kwd><kwd>митохондрии</kwd><kwd>адаптация к гипоксии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heart</kwd><kwd>ischemia</kwd><kwd>mitochondria</kwd><kwd>adaptation to hypoxia</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">Литвицкий П.Ф., Сандриков В.А., Демуров Е.А. Адаптивные и патогенные эффекты реперфузии и реоксигенации миокарда. – М. : Медицина, 1994. – 320 с.</mixed-citation><mixed-citation xml:lang="en">Литвицкий П.Ф., Сандриков В.А., Демуров Е.А. 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