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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">microcirculation</journal-id><journal-title-group><journal-title xml:lang="ru">Регионарное кровообращение и микроциркуляция</journal-title><trans-title-group xml:lang="en"><trans-title>Regional blood circulation and microcirculation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-6655</issn><issn pub-type="epub">2712-9756</issn><publisher><publisher-name>Academician I.P. Pavlov First St. Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/1682-6655-2026-25-2-61-69</article-id><article-id custom-type="elpub" pub-id-type="custom">microcirculation-1550</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 (ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES (EXPERIMENTAL INVESTIGATIONS)</subject></subj-group></article-categories><title-group><article-title>Гипервитаминоз D и постинфарктное ремоделирование левого желудочка у крыс</article-title><trans-title-group xml:lang="en"><trans-title>Hypervitaminosis D and Postinfarction Remodeling of the Left Ventricle in Rats</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5795-4006</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ионова</surname><given-names>Ж. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ionova</surname><given-names>Zh. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жанна Игоревна Ионова, канд. мед. наук, доцент</p><p>кафедра терапии факультетской с курсом эндокринологии и кардиологии с клиникой им. акад. Г. Ф. Ланга</p><p>197022; ул. Льва Толстого, д. 6-8; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Zhanna I. Ionova, PhD, Associate Professor</p><p>Faculty Department of Therapy with a Course in endocrinology and Cardiology at the Clinic named after Academician G. F. Lang</p><p>197022; 6-8, L’va Tolstogo str.; Saint Petersburg</p></bio><email xlink:type="simple">zhanna@ncmed.me</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0114-5896</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Александрович Карпов, канд. мед. наук, заведующий НИЛ</p><p>НИЛ патологии малого круга кровообращения</p><p>197341;  ул. Аккуратова, д. 2; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Andrey A. Karpov, Candidate (PhD) of Medical Sciences,Head at the research Institute</p><p>Research Institute of Pathology of the Small Circle of Blood Circulation</p><p>197341; 2, Akkuratova str.; Saint Petersburg</p></bio><email xlink:type="simple">karpoff@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5358-5968</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Беркович</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Berkovich</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ольга Александровна Беркович, д-р мед. наук, профессор</p><p>кафедра терапии факультетской с курсом эндокринологии и кардиологии с клиникой им. акад. Г. Ф. Ланга</p><p>197022; ул. Льва Толстого, д. 6-8; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Olga A. Berkovich, MD, Professor</p><p>Faculty Department of Therapy with a Course in endocrinology and Cardiology at the Clinic named after Academician G. F. Lang</p><p>197022; 6-8, L’va Tolstogo str.; Saint Petersburg</p></bio><email xlink:type="simple">oberkovich@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/0000-0002-1002-9419</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шиленко</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shilenko</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леонид Алексеевич Шиленко, врач-ординатор</p><p>197341;  ул. Аккуратова, д. 2; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Leonid A. Shilenko, Resident Physician</p><p>197341; 2, Akkuratova str.; Saint Petersburg</p></bio><email xlink:type="simple">shilenko.leo@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Буцких</surname><given-names>М. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Butskikh</surname><given-names>M. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Геннадьевич Буцких, врач-ординатор</p><p>195067; Пискаревский пр., д. 47; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Maxim G. Butskikh, Resident Physician</p><p>195067; 47, Piskarevskii street; Saint Petersburg</p></bio><email xlink:type="simple">mbutskih@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевченко</surname><given-names>П. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevchenko</surname><given-names>P. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полина Евгеньевна Шевченко, студент</p><p>197022; ул. Льва Толстого, д. 6-8; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Polina E. Shevchenko, Student</p><p>197022; 6-8, L’va Tolstogo str.; Saint Petersburg</p></bio><email xlink:type="simple">pollyps@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/0000-0002-6951-7599</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Власов</surname><given-names>Т. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Vlasov</surname><given-names>T. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тимур Дмитриевич Власов, д-р мед. наук, профессор</p><p>кафедра патологической физиологии</p><p>197022; ул. Льва Толстого, д. 6-8; Санкт-Петербург</p></bio><bio xml:lang="en"><p>Timur D. Vlasov, MD, Professor</p><p>Department of Pathological Physiology</p><p>197022; 6-8, L’va Tolstogo str.; Saint Petersburg</p></bio><email xlink:type="simple">tvlasov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Первый Санкт-Петербургский государственный медицинский университет имени академика И. П. Павлова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр имени В. А. Алмазова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov National Medical Research Centre</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Северо-Западный государственный медицинский университет имени И. И. Мечникова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Western State Medical University named after I. I. Mechnikov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>15</day><month>07</month><year>2026</year></pub-date><volume>25</volume><issue>2</issue><fpage>61</fpage><lpage>69</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ионова Ж.И., Карпов А.А., Беркович О.А., Шиленко Л.А., Буцких М.Г., Шевченко П.Е., Власов Т.Д., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ионова Ж.И., Карпов А.А., Беркович О.А., Шиленко Л.А., Буцких М.Г., Шевченко П.Е., Власов Т.Д.</copyright-holder><copyright-holder xml:lang="en">Ionova Z.I., Karpov A.A., Berkovich O.A., Shilenko L.A., Butskikh M.G., Shevchenko P.E., Vlasov T.D.</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.microcirc.ru/jour/article/view/1550">https://www.microcirc.ru/jour/article/view/1550</self-uri><abstract><sec><title>   Введение</title><p>   Введение. Дефицит витамина D связан со многими хроническими заболеваниями, особенно с сердечно-сосудистыми. Установлена связь дефицита витамина D с тяжестью коронарного атеросклероза, риском инфаркта миокарда (ИМ). Единого представления о роли гипервитаминоза D в развитии и прогрессировании ишемической болезни сердца, сердечной недостаточности нет. В связи с этим актуально изучение эхокардиографических и морфологических изменений миокарда у крыс с гипервитаминозом D, перенесших ИМ.</p><p>   Цель – изучить эхокардиографические и морфологические показатели постинфарктного ремоделирования миокарда у крыс с гипервитаминозом D.</p></sec><sec><title>   Материалы и методы</title><p>   Материалы и методы. Животные были разделены на три группы: 1 – группа сравнения, 2 – получавшие per os 300 МЕ холекальциферола, 3 – получавшие 1500 МЕ холекальциферола 21 день после моделирования ИМ. Эхокардиография проводилась на ультразвуковой установке MyLabTouchSL 3116. При гистологическом исследовании определяли размер рубца и выраженность ремоделирования миокарда.</p></sec><sec><title>   Результаты</title><p>   Результаты. Концентрация 25(ОН)D сыворотки крови крыс из группы 1 (n = 5) составила 57,05 ± 1,37 нмоль/л, из группы 2 (n = 5) – 150,96 ± 4,93 нмоль/л, из группы 3 (n = 5) превышала предельные значения, измеряемые в лаборатории (&gt; 300 нмоль/л) (р = 0,001 для всех групп). Терапия холекальциферолом в дозировке 300 МЕ сопровождалась уменьшением частоты сердечных сокращений (ЧСС) в группе 2 по сравнению с ЧСС в группе 1 (р = 0,02). ЧСС в группе 3 выше по сравнению с данным показателем в группах 1 и 2 (р &lt; 0,05). Конечно-диастолический размер (КДР) и конечно-систолический размер (КСР) были больше, а фракция укорочения (ФУ) и фракция выброса левого желудочка (ФВ ЛЖ) – меньше у животных из группы 3, чем у крыс из групп 1 и 2 (р &lt; 0,05). Крысы из группы 1 и 3 имели большие КДР и КСР и меньшие ФУ и ФВ ЛЖ по сравнению с данными показателями в группе 2 (р &lt; 0,05). Наибольшие площадь и длина рубца были в группе 3 по сравнению с другими группами (p &lt; 0,05). Индекс гипертрофии и индексы дилатации были выше, а толщина рубцовой стенки меньше в группе 3, чем в группе 2 (p &lt; 0,05).</p></sec><sec><title>   Выводы</title><p>   Выводы. Постинфарктное введение витамина D в дозировке 1500 МЕ в течение 21 дня приводило к ухудшению эхокардиографических и морфометрических показателей, в дозировке 300 МЕ – к улучшению данных показателей.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Introduction</title><p>   Introduction. Vitamin D deficiency is associated with many chronic diseases, especially cardiovascular diseases. It has been associated with the severity of coronary atherosclerosis and the risk of myocardial infarction (MI). There is no consensus on the role of hypervitaminosis D in the development and progression of coronary heart disease and heart failure. In this regard, it is important to study echocardiographic and morphological changes in the myocardium in rats with hypervitaminosis D, who underwent MI.</p></sec><sec><title>   Aim</title><p>   Aim. To study echocardiographic and morphological parameters of postinfarction myocardial remodeling in rats with hypervitaminosis D.</p></sec><sec><title>   Materials and methods</title><p>   Materials and methods. The animals were divided into 3 groups: Group 1 (comparison group), Group 2 (those who received 300 IU of cholecalciferol per os), and Group 3 (those who received 1,500 IU of cholecalciferol for 21 days after MI modeling). Echocardiography was performed using a MyLabTouchSL 3116 ultrasound machine. Histological examination determined the scar size and the severity of myocardial remodeling.</p></sec><sec><title>   Results</title><p>   Results. Serum 25(OH)D concentration in rats from group 1 (n = 5) was 57.05 ± 1.37 nmol/l, in group 2 (n = 5) – 150.96 ± 4.93 nmol/l, in group 3 (n = 5) exceeded the laboratory limits (&gt; 300 nmol/l) (p = 0.001 for all groups). Cholecalciferol therapy at a dosage of 300 IU was accompanied by a decrease in heart rate (HR) in group 2 compared to group 1 (p = 0.02). HR in group 3 was higher compared to groups 1 and 2 (p &lt; 0.05). The end-diastolic size (EDS) and end-systolic size (ESS) were larger, while the shortening fraction (SF) and the left ventricular ejection fraction (LVEF) were less in animals from group 3 than in groups 1 and 2 (p &lt; 0.05). Rats from groups 1 and 3 had higher ESD and ESS and lower SF and LVEF compared to group 2 (p &lt; 0.05). The largest scar area and length was in group 3 than in the other groups (p &lt; 0.05). The hypertrophy index and dilation indices were higher, and the scar wall thickness was lower in group 3 than in group 2 (p &lt; 0.05).</p></sec><sec><title>   Conclusions</title><p>   Conclusions. Post-infarction administration of vitamin D at a dosage of 1,500 IU for 21 days worsened echocardiographic and morphometric parameters, whereas the dosage of 300 IU improved them.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гипервитаминоз D</kwd><kwd>ишемическая болезнь сердца</kwd><kwd>инфаркт миокарда</kwd><kwd>хроническая сердечная недостаточность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hypervitaminosis D</kwd><kwd>coronary artery disease</kwd><kwd>myocardial infarction</kwd><kwd>chronic heart failure</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">Knuuti J, Wijns W, Saraste A, et al. 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