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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">diaendo</journal-id><journal-title-group><journal-title xml:lang="ru">Сахарный диабет</journal-title><trans-title-group xml:lang="en"><trans-title>Diabetes mellitus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-0351</issn><issn pub-type="epub">2072-0378</issn><publisher><publisher-name>Endocrinology research centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14341/DM12484</article-id><article-id custom-type="elpub" pub-id-type="custom">diaendo-12484</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 Studies</subject></subj-group></article-categories><title-group><article-title>Структурно-функциональные показатели сердца пациентов с ишемической болезнью сердца и сахарным диабетом 2 типа. Ритмоинотропная реакция изолированного миокарда при разном уровне гликированного гемоглобина</article-title><trans-title-group xml:lang="en"><trans-title>Structural and functional indicators of the heart of patients with ischemic heart disease and type 2 diabetes mellitus. Rhythmoinotropic response isolated myocardium at different levels of glycated hemoglobin</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4004-2497</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кондратьева</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondratieva</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кондратьева Дина Степановна, к.б.н., н.с.; eLibrary SPIN: 4628-2021634012, Томск, ул. Киевская, д. 111а</p></bio><bio xml:lang="en"><p>Dina S. Kondratieva, PhD in Biology, research associate; eLibrary SPIN: 4628-2021111a Kievskaja street, 634012 Tomsk</p></bio><email xlink:type="simple">dina@cardio-tomsk.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/0000-0001-6066-3998</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Афанасьев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Afanasiev</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Афанасьев Сергей Александрович, д.м.н., профессор; eLibrary SPIN: 7625-0960Томск</p></bio><bio xml:lang="en"><p>Sergey A. Afanasiev, MD, PhD, Professor; eLibrary SPIN: 7625-0960Tomsk</p></bio><email xlink:type="simple">tursky@cardio-tomsk.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/0000-0001-5004-1896</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Будникова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Budnikova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Будникова Олеся Викторовна, аспирант; eLibrary SPIN: 1885-8802Томск</p></bio><bio xml:lang="en"><p>Olesya V. Budnikova, PhD student; eLibrary SPIN: 1885-8802Tomsk</p></bio><email xlink:type="simple">budnikovaolesya@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/0000-0002-4706-893X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ворожцова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorozhtsova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ворожцова Ирина Николаевна, д.м.н., профессор; eLibrary SPIN: 6049-0102Томск</p></bio><bio xml:lang="en"><p>Irina N. Vorozhcova, DM, PhD, Professor; eLibrary SPIN: 6049-0102Tomsk</p></bio><email xlink:type="simple">vin@cardio-tomsk.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/0000-0003-2758-7107</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ахмедов</surname><given-names>Ш. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Akhmedov</surname><given-names>S. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ахмедов Шамиль Джаманович, д.м.н.; eLibrary SPIN: 5895-2005Томск</p></bio><bio xml:lang="en"><p>Shamil D. Akhmedov, MD, PhD; eLibrary SPIN: 5895-2005Tomsk</p></bio><email xlink:type="simple">shamil@cardio-tomsk.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/0000-0002-0217-7737</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>Б. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>B. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлов Борис Николаевич, д.м.н.; eLibrary SPIN: 9265-9432Томск</p></bio><bio xml:lang="en"><p>Boris N. Kozlov, DM, PhD; eLibrary SPIN: 9265-9432Tomsk</p></bio><email xlink:type="simple">kbn@cardio-tomsk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Hayчно-исследовательский институт кардиологии, Томский национальный исследовательский медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>21</day><month>01</month><year>2021</year></pub-date><volume>24</volume><issue>1</issue><fpage>45</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кондратьева Д.С., Афанасьев С.А., Будникова О.В., Ворожцова И.Н., Ахмедов Ш.Д., Козлов Б.Н., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Кондратьева Д.С., Афанасьев С.А., Будникова О.В., Ворожцова И.Н., Ахмедов Ш.Д., Козлов Б.Н.</copyright-holder><copyright-holder xml:lang="en">Kondratieva D.S., Afanasiev S.A., Budnikova O.V., Vorozhtsova I.N., Akhmedov S.D., Kozlov B.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://www.dia-endojournals.ru/jour/article/view/12484">https://www.dia-endojournals.ru/jour/article/view/12484</self-uri><abstract><sec><title>ОБОСНОВАНИЕ</title><p>ОБОСНОВАНИЕ. Адекватный гликемический контроль может существенно снизить риск развития сердечно-сосудистых осложнений. Однако до сих пор целевые значения уровня гликемии у пациентов старшего возраста остаются предметом дискуссии, особенно в условиях сочетанного развития сахарного диабета 2 типа (СД2) и ишемической болезни сердца (ИБС).</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Изучить структурно-функциональные показатели сердца пациентов, имеющих ИБС, ассоциированную с СД2, и ритмоинотропные реакции их изолированного миокарда в зависимости от уровня гликированного гемоглобина.</p></sec><sec><title>МЕТОДЫ</title><p>МЕТОДЫ. В исследование включены 44 пациента с диагнозом «хроническая ИБС, ассоциированная с СД2», из которых сформировали 2 группы. Пациенты с уровнем гликированного гемоглобина (НbА1с) &lt;8% составили 1-ю группу, а пациенты с НbА1с ≥8% были включены во 2-ю группу. Анализировали структурно-функциональные показатели сердца, полученные при ультразвуковом исследовании, и ритмоинотропные реакции миокарда пациентов ex vivo, используя фрагменты ушка правого предсердия, полученного во время плановой операции коронарного шунтирования. Оценивали инотропную реакцию мышечных полосок при базовой частоте стимуляции 0,5 Гц на тестирующие воздействия. Проводили экстрасистолический тест и тест на периоды покоя (post-rest тест).</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Обнаружено, что у пациентов 2-й группы экстрасистолические сокращения изолированных полосок миокарда появлялись на более коротких экстрасистолических интервалах, что свидетельствует о большей возбудимости миокарда пациентов этой группы. Постэкстрасистолические сокращения мышц пациентов 2-й группы имели значимую потенциацию. Амплитуда сокращений мышечных полосок пациентов обеих групп была потенцированной после коротких периодов покоя. Однако с увеличением длительности покоя потенциация сокращений наблюдалась только в группе с более высоким уровнем HbA1c. По данным ультразвукового исследования было обнаружено, что у пациентов 1-й группы значения конечных систолического и диастолического объемов, толщины межжелудочковой перегородки и массы миокарда левого желудочка (ЛЖ) были значимо меньше в сравнении с соответствующими показателями пациентов 2-й группы. Скорость раннего наполнения ЛЖ (пик Е) была значимо меньше у больных 1-й группы, что свидетельствует о более медленной релаксации ЛЖ. При этом скорость быстрого наполнения ЛЖ не имела значимого межгруппового различия, но в обеих группах этот показатель не превышал референсные величины.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. При умеренно повышенном уровне гликемии (9,2 [8,0; 10,3]%) сохраняются структурно-функциональные параметры сердца как на уровне изолированной ткани миокарда, так и на уровне целого сердца.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>BACKGROUND</title><p>BACKGROUND: Adequate glycemic control can significantly reduce the risk of developing cardiovascular events. However, until now, glycaemic targets in aged patients remain a subject of discussion, especially in the conditions of the combined development of Type 2 Diabetes Mellitus (T2DM) and ischemic heart disease (IHD).</p></sec><sec><title>AIMS</title><p>AIMS: To examine the structural and functional heart parameters in patients with IHD associated with T2DM and the rhythmoinotropic responses of their isolated myocardium depending on glycated hemoglobin level.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: The study included 44 patients with a diagnosis of "chronic IHD associated with T2DM", of which 2 groups were formed. Patients with glycated hemoglobin level (HbA1c) &lt;8% were included in the 1st group, and patients with HbA1c ≥8% were included in the 2nd group. The structural and functional heart parameters obtained with ultrasonography, and the rhythmoinotropic responses of myocardium in patients ex vivo were analyzed using the right atrial appendage fragments obtained during elective coronary artery bypass graft. The inotropic response of muscle strips at a basic stimulation frequency of 0,5 Hz to testing influences was assessed. An extrasystolic test and post-rest test were performed.</p></sec><sec><title>RESULTS</title><p>RESULTS: It was found that extrasystolic contractions of isolated myocardial strips in patients of the 2nd group appeared at shorter extrasystolic intervals, which indicates a greater excitability of the myocardium in patients of this group. Postextrasystolic muscle contractions in patients of the 2nd group had significant potentiation. The amplitude of the muscle strips contractions in patients of both groups was potentiative after short rest periods. However, with an increase in the rest duration, potentiation of contractions was observed only in the group with a higher HbA1c level. According to the ultrasonography data, it was found that the values of the endsystolic and diastolic volumes, the interventricular septum thickness and the left ventricular (LV) myocardium mass were significantly lower in the patients of the 1st group compared with the corresponding indicators in the patients of the 2nd group. The early LV filling velocity (peak E) was significantly lower in the patients of the 1st group, which indicates a slower LV relaxation. At the same time, the rapid LV filling velocity did not have a significant intergroup difference, but this indicator exceeded the reference values in both groups.</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS: With a moderately increased glycemic level (9,2 [8,0; 10,3]%), the structural and functional heart parameters are preserved both at the level of the isolated myocardial tissue and at the level of the whole heart.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>сахарный диабет</kwd><kwd>ишемическая болезнь сердца</kwd><kwd>гликированный гемоглобин</kwd><kwd>структурно-функциональные показатели сердца</kwd><kwd>сократительная активность миокарда</kwd><kwd>экстрасистолические и постэкстрасистолические сокращения</kwd><kwd>post-rest инотропная реакция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>diabetes mellitus</kwd><kwd>coronary heart disease</kwd><kwd>glycated hemoglobin</kwd><kwd>structural and functional parameters of the heart</kwd><kwd>myocardial contractility</kwd><kwd>extrasystolic and post-extrasystolic contractions</kwd><kwd>post-rest inotropic reaction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено в рамках выполнения темы фундаментальных исследований № АААА-А15-115123110026-3 НИИ кардиологии Томского НИМЦ</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">Дедов И.И., Шестакова М.В., Викулова О.К., и др. 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