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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">zdor</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы здоровья и экологии</journal-title><trans-title-group xml:lang="en"><trans-title>Health and Ecology Issues</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-0967</issn><issn pub-type="epub">2708-6011</issn><publisher><publisher-name>Gomel State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51523/2708-6011.2024-21-1-11</article-id><article-id custom-type="elpub" pub-id-type="custom">zdor-2700</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>ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА И БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL MEDICINE AND BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Изменения энергетического метаболизма миокарда крыс при воздействии ионизирующих излучений .</article-title><trans-title-group xml:lang="en"><trans-title>Changes in energy metabolism of rat myocardium during exposure to ionizing radiation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0797-6554</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коваль</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Koval</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Николаевич Коваль, к. б. н., доцент</p><p>кафедра биологической химии</p><p>Гомель</p></bio><bio xml:lang="en"><p>Alexander N. Koval, Candidate of Biological Sciences., Associate Professor</p><p>Department of Biological Chemistry</p><p>Gomel</p></bio><email xlink:type="simple">akovalj@ya.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гомельский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Gomel State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>31</day><month>03</month><year>2024</year></pub-date><volume>21</volume><issue>1</issue><fpage>89</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коваль А.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Коваль А.Н.</copyright-holder><copyright-holder xml:lang="en">Koval A.N.</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://journal.gsmu.by/jour/article/view/2700">https://journal.gsmu.by/jour/article/view/2700</self-uri><abstract><sec><title>   Цель исследования</title><p>   Цель исследования. Изучить воздействие на энергетический метаболизм миокарда белых крыс инкорпорированного 137Cs.</p></sec><sec><title>   Материалы и методы</title><p>   Материалы и методы. Работа проведена на 8 самцах белых крыс, распределенных на 2 экспериментальные группы, которым скармливали загрязненную 137Cs продукцию в течение 7 суток. Методом полярографии исследовали скорость потребления кислорода тканевыми препаратами миокарда на эндогенных субстратах при внесении экзогенных янтарной и глутаминовой кислот и при добавлении разобщителя окислительного фосфорилирования 2,4-динитрофенола.</p></sec><sec><title>   Результаты</title><p>   Результаты. Отмечено увеличение скорости дыхания на эндогенных субстратах, вызванное разобщением окислительного фосфорилирования. При этом статистически значимого изменения количества эндогенных субстратов не обнаружено.</p></sec><sec><title>   Заключение</title><p>   Заключение. Выявленное нарушение энергообразования в миокарде экспериментальных животных вызвано разобщением окислительного фосфорилирования, что может объяснять развитие сердечно-сосудистой патологии при действии ионизирующих излучений.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Objective</title><p>   Objective. To study the effect of incorporated 137Cs on the energy metabolism of the myocardium of white rats.</p></sec><sec><title>   Materials and methods</title><p>   Materials and methods. The work was carried out on 8 male white rats divided into 2 experimental groups, which were fed products contaminated with 137Cs for 7 days. Polarography was used to study the rate of oxygen consumption by myocardial tissue preparations on endogenous substrates, with the addition of exogenous succinic and glutamic acids, and with the addition of an uncoupler of oxidative phosphorylation, 2,4-dinitrophenol.Results. An increase in the rate of respiration on endogenous substrates caused by the uncoupling of oxidative phosphorylation was noted. At the same time, no statistically significant change in the amount of endogenous substrates was found.</p></sec><sec><title>   Conclusion</title><p>   Conclusion. The revealed violation of energy production in the myocardium of experimental animals is caused by the uncoupling of oxidative phosphorylation, and can be explained by a change in the operation of potassium channels, which can explain the development of cardiovascular pathology under the action of ionizing radiation.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>полярография</kwd><kwd>окислительное фосфорилирование</kwd><kwd>миокард</kwd><kwd>ионизирующие излучения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polarography</kwd><kwd>oxidative phosphorylation</kwd><kwd>myocardium</kwd><kwd>ionizing radiation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено без спонсорской поддержки</funding-statement><funding-statement xml:lang="en">The study was conducted without sponsorship</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">Stewart JR, Fajardo LF. 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