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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">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2026-41-1-198-206</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-3026</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 STUDIES</subject></subj-group></article-categories><title-group><article-title>Влияние синтетического аналога соматостатина октреотида на систолическую функцию левого желудочка в экспериментальной модели коронароокклюзии и реперфузии у крыс</article-title><trans-title-group xml:lang="en"><trans-title>The effect of the synthetic somatostatin analogue octreotide on left ventricular systolic function in an experimental model of coronary occlusion and reperfusion in rats</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильюшенкова</surname><given-names>Ю. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyushenkova</surname><given-names>Ju. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильюшенкова Юлия Николаевна - канд. мед. наук, старший научный сотрудник, лаборатория радионуклидных методов исследования, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Julia N. Ilyushenkova - Cand. Sci. (Med.), Senior Research Scientist, Nuclear Medicine Department, Cardiology Research Center, Tomsk NMRC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">ilyushenkova_cardio@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/0000-0003-1808-556X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухомедзянов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhomedzyanov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухомедзянов Александр Валерьевич - канд. мед. наук, старший научный сотрудник, лаборатория экспериментальной кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Alexander V. Mukhomedzyanov - Cand. Sci. (Med.), Senior Research Scientist, Laboratory of Experimental Cardiology, Cardiology Research Center.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">sasha_m91@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/0000-0002-4502-0836</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сиротина</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sirotina</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сиротина Мария - аспирант, лаборатория экспериментальной кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Maria Sirotina - Graduate Student, Laboratory of Experimental Cardiology, Cardiology Research Center, Tomsk NMRC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">sirotina_maria@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/0000-0001-9603-822X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курбатов</surname><given-names>Б. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurbatov</surname><given-names>B. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курбатов Борис Константинович - канд. мед. наук, научный сотрудник, лаборатория экспериментальной кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Boris K. Kurbatov - Cand. Sci. (Med.), Research Scientist, Laboratory of Experimental Cardiology, Cardiology Research Center, Tomsk NMRC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">kurbatov@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/0000-0003-2799-3260</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сазонова</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sazonova</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сазонова Светлана Ивановна - д-р мед. наук, заведующий лабораторией радионуклидных методов исследования, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Svetlana I. Sazonova - Dr. Sci. (Med.), Head of Nuclear Medicine Department, Cardiology Research Center, Tomsk NMRC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">sazonova_si@mail.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 кардиологии, Томский национальный исследовательский медицинский центр Российской академии наук (НИИ кардиологии Томского НИМЦ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences (Cardiology Research Institute, Tomsk NRMC)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>05</day><month>04</month><year>2026</year></pub-date><volume>41</volume><issue>1</issue><fpage>198</fpage><lpage>206</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ильюшенкова Ю.Н., Мухомедзянов А.В., Сиротина М., Курбатов Б.К., Сазонова С.И., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ильюшенкова Ю.Н., Мухомедзянов А.В., Сиротина М., Курбатов Б.К., Сазонова С.И.</copyright-holder><copyright-holder xml:lang="en">Ilyushenkova J.N., Mukhomedzyanov A.V., Sirotina M., Kurbatov B.K., Sazonova S.I.</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.sibjcem.ru/jour/article/view/3026">https://www.sibjcem.ru/jour/article/view/3026</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. Одним из ключевых компонентов постишемического повреждения является нарушение сократительной функции миокарда и изменения геометрии левого желудочка (ЛЖ), характеризующиеся снижением фракции выброса (ФВ), увеличением объемов ЛЖ, падением сердечного выброса (СВ), а также появлением зон локального нарушения сократимости. Ограничение повреждения и сохранение его сократительной функции являются основными задачами современной кардиопротекции.</p></sec><sec><title>Цель</title><p>Цель: оценить взаимосвязь эндогенного соматостатина (ЭС) с эхокардиографическими показателями в ходе эксперимента, а также влияние превентивного введения октреотида в дозах 20 и 40 мкг/кг/сут на показатели систолической функции ЛЖ в условиях экспериментальной модели длительной коронароокклюзии и реперфузии у крыс.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. В исследование включено 35 крыс-самцов линии Wistar, разделенных на 3 серии экспериментов: серию 1 составили 12 интактных животных (контрольная группа), серию 2 – 11 крыс, которым в течение 8 дней до коронароокклюзии вводили октреотид (АО «Фармстандарт») в дозе 20 мкг/кг/сут, серию 2 – 12 особей, которым в течение 8 дней до коронароокклюзии вводили октреотид в дозе 40 мкг/кг/сут. Модель включала 45-минутную окклюзию левой коронарной артерии и 120-минутную реперфузию. Животным проводили торакотомию на уровне 2–3-го ребер и накладывали лигатуру на левую нисходящую коронарную артерию на несколько миллиметров ниже ее выхода из аорты. Продолжительность коронароокклюзии составляла 45 мин. После 45 мин ишемии лигатуру снимали, восстановление кровотока подтверждали появлением эпикардиальной гиперемии. Продолжительность реперфузии составляла 120 мин. Для оценки систолической функции и изменения геометрии желудочка в ходе эксперимента на 20-й и 90-й мин реперфузии проводили трансторакальное эхокардиографическое исследование. Оценивали конечно-систолический (КСО) и конечно-диастолический объемы (КДО), ФВ, СВ, ударный объем (УО) и индекс нарушения локальной сократимости (ИНЛС). Уровни КФК-МВ (МВ-фракция креатинфосфокиназы) и ЭС определяли методом иммуноферментного анализа.</p></sec><sec><title>Результаты</title><p>Результаты. Ишемическое повреждение было подтверждено повышением КФК-МВ во всех сериях. В контрольной серии уровень ЭС к 120-й мин реперфузии статистически значимо увеличился по сравнению с исходным (p = 0,016), а также выявлена сильная корреляционная взаимосвязь между уровнем ЭС и показателями КДО ЛЖ, УО и СВ на 90-й мин реперфузии (r = 0,580; p = 0,048; r = 0,813; p = 0,001 и r = 0,879; p = 0,0001 соответственно). Применение октреотида в дозе 20 мкг/кг способствовало увеличению ФВ к 90-й мин, но не влияло на ИНЛС. Использование дозировки 40 мкг/кг/сут привело к снижению уровня КФК-МВ (p = 0,018) и статистически значимому улучшению параметров насосной функции и сократимости ЛЖ.</p></sec><sec><title>Заключение</title><p>Заключение. Концентрация ЭС ассоциирована с эхокардиографическими показателями, отражающими сократительную и насосную функции ЛЖ в конце реперфузии, а применение аналога соматостатина октреотида дозозависимо снижает постишемическую сократительную дисфункцию миокарда</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. One of the key components of post-ischemic damage is impaired myocardial contractility and changes in left ventricular geometry, characterized by a decrease in ejection fraction (EF), an increase in left ventricular (LV) volume, a drop in cardiac output (CO), and the appearance of areas of local contractility impairment. Limiting damage, preserving LV contractile function are the main goals of modern cardioprotection.</p></sec><sec><title>Aim</title><p>Aim: To assess the relationship between endogenous somatostatin (ES) and echocardiographic parameters during the experiment, as well as the effect of preventive administration of octreotide at doses of 20 and 40 μg/kg/day on systolic function indicators of the LV in an experimental model of prolonged coronary occlusion and reperfusion in rats.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. The study included 35 male Wistar rats divided into 3 series of experiments. Series 1 consisted of 12 intact animals (control group), series 2 consisted of 11 rats that were administered octreotide (Pharmstandard JSC) at a dose of 20 mcg/kg/ day for 8 days prior to coronary occlusion, and the third series consisted of 12 animals that received octreotide at a dose of 40 mcg/ kg/day for 8 days prior to coronary occlusion. The model included 45 minutes of occlusion of the left coronary artery and 120 minutes of reperfusion. The animals underwent thoracotomy at the level of the 2nd-3rd ribs, and a ligature was applied to the left descending coronary artery a few millimetres below its origin from the aorta. The duration of coronary occlusion was 45 min. After 45 min of ischaemia, the ligature was removed, and the restoration of blood flow was confirmed by the appearance of epicardial hyperaemia. The duration of reperfusion was 120 minutes. To assess systolic function and changes in ventricular geometry during the experiment, transthoracic echocardiography was performed at 20 and 90 minutes of reperfusion. End-systolic (ESV) and end-diastolic volumes (EDV), ejection fraction (EF), cardiac output (CO), stroke volume (SV) and local contractility impairment index (WMSI) were assessed. Levels of CK-MB (MB fraction of creatine phosphokinase) and endogenous somatostatin were determined by immunoassay (ELISA).</p></sec><sec><title>Results</title><p>Results. Ischemic damage was confirmed by an increase in CK-MB in all series. In the control series, the ES level at 120 minutes of reperfusion increased statistically significantly compared to the baseline (p = 0.016), and a strong correlation was found between ES levels and EDV LV, CO, and SV indices at 90 minutes of reperfusion (r = 0.580; p = 0.048; r = 0.813; p = 0.001 and r = 0.879; p = 0.0001, respectively). The use of octreotide at a dose of 20 μg/kg contributed to an increase in EF by the 90th minute, but did not affect LVEF. The use of a dosage of 40 μg/kg/day led to a decrease in CK-MB levels (p = 0.018) and an improvement in the parameters of pump function and LV contractility.</p></sec><sec><title>Conclusion</title><p>Conclusion. ES concentration is associated with echocardiographic parameters reflecting LV contractile and pumping functions at the end of reperfusion, and the use of the somatostatin analogue octreotide dose-dependently reduces post-ischaemic left ventricular myocardial contractile dysfunction in ischaemic and reperfusion injury.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>соматостатин</kwd><kwd>октреотид</kwd><kwd>ишемия</kwd><kwd>реперфузия</kwd><kwd>систолическая функция</kwd><kwd>экспериментальная кардиология</kwd></kwd-group><kwd-group xml:lang="en"><kwd>somatostatin</kwd><kwd>octreotide</kwd><kwd>ischemia</kwd><kwd>reperfusion</kwd><kwd>systolic function</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">исследование выполнено в рамках гос. задания ФНИ № 122020300042-4</funding-statement><funding-statement xml:lang="en">the research was supported by governmental assignment 122020300042-4</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">Algoet M., Janssens S., Himmelreich U., Gsell W., Pusovnik M., Van den Eynde J. et al. 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