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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">nefr</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology (Saint-Petersburg)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-6274</issn><issn pub-type="epub">2541-9439</issn><publisher><publisher-name>Pavlov First Saint-Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36485/1561-6274-2022-26-4-110-118</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-2168</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 INVESTIGATION</subject></subj-group></article-categories><title-group><article-title>Миокардиальные эффекты малобелковой диеты при экспериментальной дисфункции почек</article-title><trans-title-group xml:lang="en"><trans-title>Myocardial effects of a low-protein diet in  experimental kidney dysfunction</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7532-2405</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Береснева</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Beresneva</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Береснева Ольга Николаевна, канд. биол. наук, старший научный сотрудник</p><p>197022</p><p>Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54</p><p>тел.: (812) 346-39-26, </p></bio><bio xml:lang="en"><p>Olga N. Beresneva, PhD, Senior researcher</p><p>Pavlov University Institute of Nephrology Laboratory of Clinical Physiology of the Kidney </p><p>197022</p><p>L.Tolstoy st., 17, build. 54</p><p>St-Petersburg</p><p>tel.: (812)346-39-26</p></bio><email xlink:type="simple">beresnevaolga@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/0000-0002-4526-8671</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парастаева</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Parastaeva</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парастаева Марина Магрезовна, канд. биол. наук, старший научный сотрудник</p><p>Научно-исследовательский институт нефрологии, лаборатория клинической физиологии почек</p><p>197022</p><p>Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54</p><p>тел.: (812) 346-39-26</p></bio><bio xml:lang="en"><p>Marina M. Parastaeva, PhD, Senior researcher</p><p>Pavlov University Institute of Nephrology Laboratory of Clinical Physiology of the Kidney</p><p>197022</p><p>L.Tolstoy st., 17 build. 54</p><p>St-Petersburg</p><p>tel.: (812)346-39-26</p></bio><email xlink:type="simple">marina_parastaeva@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/0000-0003-0188-5173</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>Г. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>G. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванова Галина Тажимовна, канд. биол. наук, старший научный сотрудник</p><p>лаборатория физиологии сердечно-сосудистой и лимфатической систем</p><p>199034</p><p>наб. Макарова, д. 6</p><p>Санкт-Петербург</p><p>тел.: 8 (812) 328-07-01</p></bio><bio xml:lang="en"><p>Galina T. Ivanova, PhD, Senior researcher</p><p>laboratory of physiology of the cardiovascular and lymphatic systems</p><p>199034</p><p>Makarova Emb., 6</p><p>St-Petersburgtel.: 8 (812) 328-07-01</p></bio><email xlink:type="simple">azhim@list.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/0000-0002-7605-4369</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зарайский</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaraiski</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зарайский Михаил Игоревич, проф., д-р мед. наук</p><p>кафедра клинической лабораторной диагностики с курсом молекулярной медицины</p><p>197022</p><p>ул. Л. Толстого, д. 17, корп. 54</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Mikhail I. Zaraiski, Prof., MD, PhD, DMedSci</p><p>Department of Clinical Laboratory Diagnostics with a Course of Molecular Medicine</p><p>197022</p><p>L. Tolstoy st., 17, build 54</p><p>St- Petersburg</p></bio><email xlink:type="simple">mzaraiski@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0515-2575</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орлова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlova</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Орлова Светлана Александровна, доц., канд. мед. наук</p><p>кафедра пропедевтики внутренних болезней с клиникой</p><p>197022</p><p>ул. Л. Толстого, д. 17 корп. 54</p><p>Санкт-Петербург</p><p>тел.: (812) 338-69-19</p></bio><bio xml:lang="en"><p>Svetlana A. Orlova, MD, PhD, Assistant prof</p><p>Department of Propaedeutics of Internal Diseases</p><p>197022</p><p>L. Tolstoy st., 17 build. 54</p><p>St-Petersburg</p><p>tel.: +78123386919</p></bio><email xlink:type="simple">orlova_s_2001@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/0000-0002-5616-3488</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кучер</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kucher</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Проф. Кучер Анатолий Григорьевич, д-р мед. наук, заместитель директора</p><p>научно-исследовательский институт нефрологии, научноклинический исследовательский центр</p><p>197022</p><p>ул. Л. Толстого, д. 17 корп. 54</p><p>Санкт-Петербург</p><p>тел.: +7(921)421-18-17</p></bio><bio xml:lang="en"><p>Prof. Anatoly G. Kucher, MD, PhD, DMedSci, Vice-Director</p><p>Research Institute of Nephrology, Research and Сlinical Research Center</p><p>197022</p><p>L. Tolstoy st., 17, build 54</p><p>St-Petersburg</p><p>tel.: +7(921)421-18-17</p></bio><email xlink:type="simple">prof.kucher@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО «Первый Санкт-Петербургский государственный медицинский университет им. акад. И.П. Павлова»<country>Россия</country></aff><aff xml:lang="en">First Pavlov St.-Petersburg State Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">ФГБУН Институт физиологии им. И.П. Павлова РАН<country>Россия</country></aff><aff xml:lang="en">Pavlov Institute of Physiology, Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">ФГБОУ ВО «Первый Санкт-Петербургский государственный медицинский университет им. акад. И.П. Павлова»; ФГБОУ ВО «Северо-Западный государственный медицинский университет им. И.И. Мечникова»<country>Россия</country></aff><aff xml:lang="en">First Pavlov St.-Petersburg State Medical University; North-Western State Medical University named after I.I. Mechnikov<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>25</day><month>11</month><year>2022</year></pub-date><volume>26</volume><issue>4</issue><fpage>110</fpage><lpage>118</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Береснева О.Н., Парастаева М.М., Иванова Г.Т., Зарайский М.И., Орлова С.А., Кучер А.Г., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Береснева О.Н., Парастаева М.М., Иванова Г.Т., Зарайский М.И., Орлова С.А., Кучер А.Г.</copyright-holder><copyright-holder xml:lang="en">Beresneva O.N., Parastaeva M.M., Ivanova G.T., Zaraiski M.I., Orlova S.A., Kucher A.G.</copyright-holder><license 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://journal.nephrolog.ru/jour/article/view/2168">https://journal.nephrolog.ru/jour/article/view/2168</self-uri><abstract><p>ЦЕЛЬ: оценить влияние МБД, дополненной кетостерилом, на морфологические и эпигеномные изменения в миокарде крыс линии Wistar c моделируемой дисфункцией почек. МАТЕРИАЛ И МЕТОДЫ. Работа выполнена на самцах крыс линии Wistar, подвергнутых 5/6 нефрэктомии (НЭ). Первая группа после НЭ получала стандартную диету (20,16% животного белка), вторая – малобелковую диету (МБД), включающую 10% кетостерила. Контрольные крысы получали стандартную диету. Через 4 мес у крыс оценивали артериальное давление (АД), индекс массы левого желудочка (ИМЛЖ), выполняли гистологическое исследование миокарда. В миокарде определяли относительные уровни экспрессии NF-kB, микроРНК- 21, микроРНК-133, микроРНК-203. РЕЗУЛЬТАТЫ. Через 4 мес у крыс с НЭ на стандартной диете регистрировался рост АД, увеличение индекса массы миокарда ЛЖ. МБД с включением 10% кетостерила замедляла рост систолического АД и развитие гипертрофии миокарда ЛЖ у крыс с дисфункцией почек. На гистологическом уровне применение МБД обеспечило снижение степени гипертрофии кардиомиоцитов и дистрофических изменений в кардиомиоцитах. У животных, получавших МБД, отмечен менее выраженный диффузный и периваскулярный фиброз в сравнении с крысами, получавшими обычный корм. Применение МБД замедляло рост относительного уровня экспрессии гена NFκB и миРНК-21 в миокарде крыс с НЭ и способствовало росту уровня экспрессии миРНК-133 и миРНК-203 по сравнению с показателями у животных с НЭ, получавших стандартный корм. ЗАКЛЮЧЕНИЕ: длительное использование МБД с применением кетоаналогов незаменимых аминокислот может оказывать потенциальный кардиопротективный эффект при ХБП, замедляя рост АД, увеличение массы миокарда ЛЖ и формирование структурных изменений в миокарде. Возможно, существенную роль в этом может играть снижение экспрессии NF-kB и микроРНК-21, а также повышение экспрессии миРНК-203 и 133 в миокарде.</p></abstract><trans-abstract xml:lang="en"><p>THE AIM: to evaluate the effect of low protein diet supplemented with ketosteril on morphological and epigenomic changes in the myocardium of Wistar rats with simulated kidney dysfunction. MATERIALS AND METHODS. The work was performed on male Wistar rats subjected to 5/6 nephrectomy (NE). The first group after NE received a standard diet (20.16% animal protein), the second – low protein diet (LPD), including 10% ketosteril. Control rats received a standard diet. After 4 months, blood pressure (BP) and left ventricular mass index (LVMI) were assessed in rats, and a histological examination of the myocardium was performed. In the myocardium, the relative expression levels of NF-kB, miRNA-21, miRNA-133, and miRNA-203 were determined. RESULTS. After 4 months in rats with NE on a standard diet, an increase in blood pressure, an increase in the mass index of the LV myocardium was recorded. MBD with the inclusion of 10% Ketosteril slowed down the growth of systolic blood pressure and the development of LV myocardial hypertrophy in rats with kidney dysfunction. At the histological level, the use of LPD provided a decrease in the degree of hypertrophy of cardiomyocytes and degenerative changes in cardiomyocytes. Animals treated with LPD had less pronounced diffuse and perivascular fibrosis compared with animals fed normal food. The use of MBD slowed down the increase in the relative level of expression of the NFκB gene and miRNA-21 in the myocardium of rats with NE and promoted an increase in the expression level of miRNA-133 and miRNA-203 compared to the indices of animals with NE that received standard food. CONCLUSION: long-term use of LPD with the use of ketoanalogues of essential amino acids can have a potential cardioprotective effect in CKD, slowing down the growth of blood pressure, an increase in LV myocardial mass and the formation of structural changes in the myocardium. It is possible that a decrease in the expression of NF-kB and miRNA-21, as well as an increase in the expression of miRNA-203 and 133 in the myocardium, can play a significant role in this. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>почечная дисфункция</kwd><kwd>малобелковая диета</kwd><kwd>миокард</kwd><kwd>экспрессия NFκВ</kwd><kwd>экспрессия микроРНК</kwd></kwd-group><kwd-group xml:lang="en"><kwd>renal dysfunction</kwd><kwd>low-protein diet</kwd><kwd>myocardium</kwd><kwd>NFkB expression</kwd><kwd>microRNA expression</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">Sárközy M, Gáspár R, Zvara Á et al. Chronic kidney disease induces left ventricular overexpression of the pro-hypertrophic microRNA-212. Sci Rep 2019; 9(1):1302. doi: 10.1038/s41598-018-37690-5</mixed-citation><mixed-citation xml:lang="en">Sárközy M, Gáspár R, Zvara Á et al. 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