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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2022-7.1.26</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-3321</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 RESEARCHES</subject></subj-group></article-categories><title-group><article-title>Экспериментальная гипертермия. Экспрессия белков, участвующих в регулировании апоптоза жёлтых тел яичников в остром и восстановительном периодах</article-title><trans-title-group xml:lang="en"><trans-title>Experimental hyperthermia: expression of proteins involved in the regulation of ovarian corpus luteum apoptosis in the acute and recovery periods</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3630-4669</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мичурина</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Michurina</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, руководитель группы экспериментальной фармакологии, </p><p>630060, г. Новосибирск, ул. Тимакова, 2</p></bio><bio xml:lang="en"><p>Dr. Sc. (Med.), Professor, Head of the Group of Experimental Pharmacology,</p><p>Timakova str. 2, Novosibirsk 630060</p></bio><email xlink:type="simple">michurinasv3000@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2124-6328</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колесников</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolesnikov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, академик РАН, главный научный сотрудник, 664003, г. Иркутск, ул. Тимирязева, 16;</p><p>профессор, 119991, г. Москва, Ленинские горы, 1</p></bio><bio xml:lang="en"><p>Dr. Sc. (Med.), Academician of the RAS, Chief Scientific Officer, Timiryazeva str. 16, Irkutsk 664003;</p><p>Professor, Leninskie Gory 1, Moscow 119991</p></bio><email xlink:type="simple">sikolesnikov2012@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6281-0402</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ищенко</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ishchenko</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат биологических наук, ведущий научный сотрудник группы экспериментальной фармакологии, </p><p>630060, г. Новосибирск, ул. Тимакова, 2</p></bio><bio xml:lang="en"><p>Cand. Sc. (Biol.), Leading Research Officer of the Group of Experimental pharmacology, </p><p>Timakova str. 2, Novosibirsk 630060</p></bio><email xlink:type="simple">irenisch@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/0000-0002-1390-4426</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор биологических наук, старший научный сотрудник группы экспериментальной фармакологии, </p><p>630060, г. Новосибирск, ул. Тимакова, 2</p></bio><bio xml:lang="en"><p>Dr. Sc. (Biol.), Senior Research Officer of the Group of Experimental Pharmacology, </p><p>Timakova str. 2, Novosibirsk 630060</p></bio><email xlink:type="simple">arhipowsergei@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт клинической и экспериментальной лимфологии – филиал ФГБНУ «Федеральный исследовательский центр Институт цитологии и генетики СО РАН»</institution></aff><aff xml:lang="en"><institution>Research Institute of Clinical and Experimental Lymрhology – Branch of Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБНУ «Научный центр проблем здоровья семьи и репродукции человека»;&#13;
ФГБОУ ВО «Московский государственный университет имени М.В. Ломоносова»</institution></aff><aff xml:lang="en"><institution>Scientific Centre for Family Health and Human Reproduction Problems;&#13;
Lomonosov Moscow State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>21</day><month>03</month><year>2022</year></pub-date><volume>7</volume><issue>1</issue><fpage>232</fpage><lpage>239</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мичурина С.В., Колесников С.И., Ищенко И.Ю., Архипов С.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Мичурина С.В., Колесников С.И., Ищенко И.Ю., Архипов С.А.</copyright-holder><copyright-holder xml:lang="en">Michurina S.V., Kolesnikov S.I., Ishchenko I.Y., Arkhipov S.A.</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.actabiomedica.ru/jour/article/view/3321">https://www.actabiomedica.ru/jour/article/view/3321</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Воздействие теплового шока может инициировать в яичниках млекопитающих апоптоз клеток жёлтых тел. Во время фолликулогенеза апоптоз зернистых клеток регулируется ключевыми белками гибели клеток – Bcl-2 и ВАХ. В то же время роль этих белков в нарушениях развития жёлтых тел яичников при тепловом стрессе во многом остаётся неясной.</p></sec><sec><title>Цель исследования</title><p>Цель исследования: выявить особенности экспрессии антиапоптотического белка Bad и проапоптотического белка Bcl-2 в лютеоцитах яичников крыс в острый (3-и сутки) и восстановительный (7-е и 14-е сутки) периоды после однократного воздействия экспериментальной гипертермии (ЭГ) (ректальная температура – 43,5 °С).</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Иммуногистохимически с помощью непрямого двухэтапного стрептавидин-биотинового метода определяли экспрессию Bad и Bcl-2.</p></sec><sec><title>Результаты</title><p>Результаты. На 3-и сутки после ЭГ в лютеоцитах площади экспрессии как Bad, так и Bcl-2 возросли в 2 раза, но отношение площадей Bcl-2/Bad не изменилось, что свидетельствует о поддержании в физиологических пределах интенсивности апоптоза по митохондриальному пути. На 7-е сутки площади экспрессии Bcl-2 и Bad оставались на уровне 3-х суток, но индекс Bcl-2/Bad снизился, что свидетельствует об активации внутреннего пути апоптоза клеток жёлтых тел яичников. К 14-м суткам площади экспрессии протеинов сократились (Bad – в  1,7  раза, Bcl-2 – в  3,2  раза) по  сравнению с острым периодом, а индекс Bcl-2/Bad уменьшился в 2 раза по сравнению с контролем и группой острого периода.</p></sec><sec><title>Заключение</title><p>Заключение. Выявленное преобладание проапоптотического Bad над антиапоптотическим Bcl-2 в лютеоцитах на 14-е сутки после ЭГ свидетельствует о нарушении антиапоптотической защиты, что приводит к активации митохондриального пути апоптоза последних. Снижение экспрессии Bcl-2 может расцениваться как проявление механизма удаления дефектных лютеоцитов и стремление организма нормализовать нарушенный воздействием высокой температуры овариально-маточный цикл. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background.Heat shock effects can initiate apoptosis of oocytes and corpus luteum cells in mammalian ovaries. During folliculogenesis, follicular apoptosis is regulated by Bcl-2 and BAX proteins which are key effectors of granular cell death. Mechanisms of disruption of the ovarian corpus luteum development under heat stress remain largely unclear.</p></sec><sec><title>Aim of the research</title><p>Aim of the research: to identify the expression features of anti-apoptotic Bad and proapoptotic Bcl-2 proteins in the rat ovarian luteocytes in the acute (by day 3) and recovery (by days 7 and 14) periods after a single exposure of experimental hyperthermia (EH) (rectal temperature 43.5 °C).</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The expression of Bad and Bcl-2 was determined immunohistochemically using an indirect two-stage streptavidin-biotin method.</p></sec><sec><title>Results</title><p>Results. On day 3 after EH, the expression areas of both Bad and Bcl-2 increased 2-fold, but the ratio of Bcl-2/Bad areas did not change, indicating that the intensity of apoptosis along the mitochondrial pathway in luteocytes in the acute period was  maintained within physiological values. On day  7, the Bad and Bcl-2 expression areas remained at the level of day 3, but the Bcl-2/Bad index decreased, indicating the activation of the apoptosis internal pathway in the ovarian corpus luteum cells. By day 14, the protein expression areas decreased (Bad – by 1.7 times, Bcl-2 – by 3.2 times) compared to the acute period, and the Bcl-2/Bad index decreased by 2 times compared to the control and the acute period group.</p></sec><sec><title>Conclusion</title><p>Conclusion. The observed predominance of proapoptotic Bad protein over antiapoptotic Bcl-2 in luteocytes on day 14 after EH indicates the anti-apoptotic protection violation, which leads to the apoptosis mitochondrial pathway activation of  the latter. A decrease in Bcl-2 expression can be regarded as a manifestation of the defective luteocytes removal mechanism and the body’s desire to normalize the ovarian-uterine cycle disrupted by high temperature exposure. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>апоптоз</kwd><kwd>экспериментальная гипертермия</kwd><kwd>яичники крыс</kwd><kwd>жёлтые тела</kwd><kwd>Bad</kwd><kwd>Bcl-2</kwd><kwd>Bcl-2/Bad</kwd></kwd-group><kwd-group xml:lang="en"><kwd>apoptosis</kwd><kwd>experimental hyperthermia</kwd><kwd>rat ovaries</kwd><kwd>corpus luteum</kwd><kwd>Bad</kwd><kwd>Bcl-2</kwd><kwd>Bcl-2/Bad</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">Al-Gubory KH, Garrel C, Faure P, Sugino N. Roles of antioxidant enzymes in corpus luteum rescue from reactive oxygen species-induced oxidative stress. 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