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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">cardio</journal-id><journal-title-group><journal-title xml:lang="ru">Кардиология</journal-title><trans-title-group xml:lang="en"><trans-title>Kardiologiia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0022-9040</issn><issn pub-type="epub">2412-5660</issn><publisher><publisher-name>Kardiomag</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18087/cardio.2022.3.n1761</article-id><article-id custom-type="elpub" pub-id-type="custom">cardio-1761</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLES</subject></subj-group></article-categories><title-group><article-title>Нормализация насосной функции диабетического сердца при снижении функциональной нагрузки</article-title><trans-title-group xml:lang="en"><trans-title>Normalisation of diabetic heart pump function at decreased functional load</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5155-7699</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лакомкин</surname><given-names>В. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Lakomkin</surname><given-names>V. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ведущий научный сотрудник лаборатории экспериментальной патологии сердца института экпериментальной кардиологии </p><p>Москва</p></bio><bio xml:lang="en"><p>leading researcher, PhD</p><p>Moscow</p></bio><email xlink:type="simple">v.lakomkin@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/0000-0001-5113-0954</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абрамов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Abramov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>научный сотрудник</p><p>Москва</p><p> </p></bio><bio xml:lang="en"><p>researcher</p><p>Moscow</p></bio><email xlink:type="simple">ferk_88@list.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/0000-0002-1564-3469</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лукошкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lukoshkova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ведущий научный сотрудник, д.биол.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>leading researcher, PhD, Sc.D</p><p>Moscow</p></bio><email xlink:type="simple">elena.lukoshkova@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/0000-0002-7904-3817</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Студнева</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Studneva</surname><given-names>I. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ведущий научный сотрудник, к.биол.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>leading researcher, PhD</p><p>Moscow</p></bio><email xlink:type="simple">ir.studneva@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/0000-0001-9228-5178</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Просвирнин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Prosvirin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач</p><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">fo_ton@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/0000-0003-3096-7434</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капелько</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapelko</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>главный научный сотрудник, рук. лаборатории экспериментальной патологии сердца</p><p>Москва</p></bio><bio xml:lang="en"><p>chive of laboratory, MD, prof.</p><p>Moscow</p></bio><email xlink:type="simple">valk69@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр кардиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Cardiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>31</day><month>03</month><year>2022</year></pub-date><volume>62</volume><issue>3</issue><fpage>34</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kardiomag, 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Kardiomag</copyright-holder><copyright-holder xml:lang="en">Kardiomag</copyright-holder><license xlink:href="https://cardio.elpub.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://cardio.elpub.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://cardio.elpub.ru/jour/article/view/1761">https://cardio.elpub.ru/jour/article/view/1761</self-uri><abstract><p>Цель    Изучение гемодинамики левого желудочка (ЛЖ) при уменьшении притока к сердцу, а также измерение содержания энергетических метаболитов в миокарде диабетических крыс.</p><p>Материал и методы  Диабетическая кардиомиопатия характеризуется сниженной сократительной функцией сердца и переходом энергетического метаболизма в кардиомиоцитах исключительно на жирные кислоты в качестве источника энергии. Это снижает эффективность использования энергии и повышает уязвимость сердца к гипоксии. Данная работа была выполнена на крысах с сахарным диабетом 1‑го типа, создаваемым введением стрептозотоцина (60 мг / кг). Насосную функцию ЛЖ изучали при помощи катетера, позволяющего одновременно измерять давление и объем ЛЖ в каждом кардиоцикле.</p><p>Результаты   Уровень глюкозы в крови поднимался примерно в 6 раз через 2 нед. Установлено наличие сердечной недостаточности со снижением фракции выброса на 27 %, минутного объема на 39 % и ударной работы на 41 %. Основу систолической дисфункции составляла сниженная более чем в 2 раза максимальная скорость выброса из ЛЖ. При этом развиваемое давление в ЛЖ и индекс сократимости были в пределах нормы, а фактором, затруднившим выброс, послужила повышенная в 1,5 раза ригидность артериального русла. В миокарде диабетических крыс установлено снижение суммы адениннуклеотидов на 21 % и содержания АТФ на 29 %, а также образование фосфокреатина. Содержание лактата в диабетическом миокарде было повышено почти в 3 раза, что свидетельствует о мобилизации анаэробного гликолиза. При сниженной преднагрузке, равном диастолическом объеме (0,3 мл) и равном артериальном давлении (60 мм рт. ст.) насосная функция диабетических сердец не отличалась от контроля.</p><p>Заключение     При сахарном диабете 1‑го типа снижение функциональной нагрузки и потребления кислорода нормализует насосную функцию миокарда с нарушенным энергетическим метаболизмом.</p></abstract><trans-abstract xml:lang="en"><p>Aim      To study left ventricular (LV) hemodynamics in presence of decreased blood inflow to the heart as well as changes in myocardial content of energy metabolites in diabetic rats.</p><p>Material and methods  Diabetic cardiomyopathy is characterized by impaired heart contractility and by transition of cardiomyocyte energy metabolism fatty acids exclusively as a source of energy. This reduces the efficiency of energy utilization and increases the heart vulnerability to hypoxia. This study was performed on rats with type 1 diabetes mellitus induced by administration of streptozotocin (60 mg/kg). The LV pump function was studied with a catheter that allows simultaneous measurement of LV pressure and volume in each cardiac cycle.</p><p>Results Blood glucose was approximately sixfold increased at 2 weeks. Heart failure was detected with decreases in ejection fraction by 27%, minute volume by 39%, and stroke work by 41%. Systolic dysfunction was based on a decrease in LV peak ejection velocity by more than 50%. Furthermore, the LV developed pressure and contractility index were within the normal range, while 1.5 times increased arterial stiffness was the factor that hampered ejection. The sum of adenine nucleotides was decreased by 21%, the ATP content was decreased by 29%, and also creatine phosphate formation was reduced in the myocardium of diabetic rats. Lactate content in the diabetic myocardium was increased almost threefold, which indicated mobilization of aerobic glycolysis. With the reduced preload, equal diastolic volume (0.3 ml), and equal blood pressure (60 mm Hg), the diabetic heart pump function did not differ from the control.</p><p>Conclusion      In type 1 diabetes mellitus, decreases in functional load and oxygen consumption normalize the myocardial pump function with disturbed energy metabolism.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Сахарный диабет</kwd><kwd>сердце</kwd><kwd>сократимость</kwd><kwd>давление–объем</kwd><kwd>приток</kwd><kwd>энергетический метаболизм</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Diabetes mellitus</kwd><kwd>heart</kwd><kwd>contractility</kwd><kwd>pressure-volume</kwd><kwd>inflow</kwd><kwd>energy metabolism</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке РФФИ (грант 20‑015‑00027).  Конфликт интересов не заявлен.</funding-statement><funding-statement xml:lang="en">The study was supported by the Russian Foundation for Basic Research (grant 20‑015‑00027).  No conflict of interest is reported.</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">Palchikova N.A., Kuznetsova N.V., Kuzminova O.I., Selyatitskaya V.G. Hormonal and biochemical features of alloxanand streptozotocin-induced models of experimental diabetes. The Siberian Scientific Medical Journal. 2013;33(6):18–24. [Russian: Пальчикова Н.А., Кузнецова Н.В., Кузьминова О.И., Селятицкая В.Г. Гормональнобиохимические особенности аллоксановой и стрептозотоцино- вой моделей экспериментального диабета. 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