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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Terapevticheskii arkhiv</journal-id><journal-title-group><journal-title xml:lang="en">Terapevticheskii arkhiv</journal-title><trans-title-group xml:lang="ru"><trans-title>Терапевтический архив</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3660</issn><issn publication-format="electronic">2309-5342</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">32166</article-id><article-id pub-id-type="doi">10.17116/terarkh201789132-37</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Editorial article</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Передовая статья</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The effect of the level of total sodium deposited in the myocardium on its stiffness</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние уровня общего натрия, депонированного в миокарде, на его жесткость</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Arutyunov</surname><given-names>G. P.</given-names></name><name xml:lang="ru"><surname>Арутюнов</surname><given-names>Г. П.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dragunov</surname><given-names>D. O.</given-names></name><name xml:lang="ru"><surname>Драгунов</surname><given-names>Д. О.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Arutyunov</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Арутюнов</surname><given-names>А. Г.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sokolova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Соколова</surname><given-names>А. В.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Papyshev</surname><given-names>I. P.</given-names></name><name xml:lang="ru"><surname>Папышев</surname><given-names>И. П.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kildyushov</surname><given-names>E. M.</given-names></name><name xml:lang="ru"><surname>Кильдюшов</surname><given-names>Е. М.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Negrebetsky</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Негребецкий</surname><given-names>В. В.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fedorova</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Федорова</surname><given-names>В. Н.</given-names></name></name-alternatives><email>or@hpmp.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет им. Н.И. Пирогова Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">Бюро судебно-медицинской экспертизы Департамента здравоохранения Москвы</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2017</year></pub-date><volume>89</volume><issue>1</issue><issue-title xml:lang="en">VOL 89, NO1 ()</issue-title><issue-title xml:lang="ru">ТОМ 89, №1 (2017)</issue-title><fpage>32</fpage><lpage>37</lpage><history><date date-type="received" iso-8601-date="2020-04-10"><day>10</day><month>04</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ter-arkhiv.ru/0040-3660/article/view/32166">https://ter-arkhiv.ru/0040-3660/article/view/32166</self-uri><abstract xml:lang="en"><p>Aim. To determine a relationship between the level of total sodium in the myocardium to its stiffness. Subjects and methods. The investigation enrolled 18 hypertensive patients who had suddenly died; their mean age was 40±10 years; mean waist circumference, 102±12.5 cm; height, 170±7.7 cm; myocardial mass, 319±53 g. Results. The variation in the myocardial level of total sodium averaged 211.7±37.5 (min, 71.5; max, 226.17) mmol/l. The sodium level was ascertained to be affected to the greatest extent by myocardial mass (SS=3615.56; p=0.00029) and age at death (SS=1965.568; p=0.0029), whereas gender and smoking had a considerably lower impact (SS=778.584; p=0.03). A univariate regression analysis showed that there was a relationship between myocardial sodium levels and the thickness of the anterior wall of the left ventricle (β=0.94; p=0.000001; r2=0.88), that of the anterior wall of the right ventricle (β=0.82; p=0.000021; r2=0.66), and that of the interventricular septum (β=0.94; p=0.000001; r2=0.89). The wall thickness of the myocardium was established to depend on its sodium level (SS=21813.89; p=0.000001; r2=0.88): the higher sodium amount in the myocardium, the thicker its walls. The average velocity of acoustic wave propagation was 6.24±0.51 m/sec. A significant correlation was observed between sodium concentrations in the myocardium and its stiffness (β=0.72; p=0.00062; r2=0.49). Conclusion. The level of sodium deposited in the myocardium, which is directly related to dietary sodium intake, is significantly correlated with myocardial stiffness. It can be assumed that the elevated level of sodium deposited in the myocardium is an independent factor that changes the stiffness of the myocardium and appears to influence the development of its diastolic dysfunction.</p></abstract><trans-abstract xml:lang="ru"><p>Резюме Цель исследования. Определить взаимосвязь уровня общего натрия в миокарде с его жесткостью. Материалы и методы. В исследование включены 18 человек с гипертонической болезнью, умерших внезапно, возраст которых в среднем составил 40±10 лет, средняя окружность талии — 102±12,5 см, рост — 170±7,7 см, масса миокарда — 319±53 г. Результаты. Разброс значений уровня общего натрия в миокарде составил в среднем 211,7±37,5 (min 71,5; maх 226,17) ммоль/л. Установлено, что в наибольшей степени на уровень натрия влияли: масса миокарда (SS=3615,56; p=0,00029) и возраст умершего (SS=1965,568; p=0,0029), тогда как пол и курение влияли в существенно меньшей степени (SS=778,584; p=0,03). Регрессионный однофакторный анализ показал взаимосвязь содержания уровня натрия в миокарде и толщины передней стенки левого желудочка (β=0,94; p=0,000001; r2=0,88), толщины передней стенки правого желудочка (β=0,82; p=0,000021; r2=0,66), толщины межжелудочковой перегородки (β=0,94; p=0,000001; r2=0,89). Установлено, что толщина стенок миокарда зависит от содержания натрия в нем (SS=21813,89; p=0,000001; r2=0,88): чем выше содержание натрия, тем толще его стенки. Средняя скорость распространения акустической волны составила 6,24±0,51 м/с. Получена достоверная связь между концентрацией натрия в миокарде и его жесткостью (β=0,72; p=0,00062; r2=0,49). Заключение. Уровень депонированного натрия в миокарде, имеющий прямую связь с уровнем употребления поваренной соли, имеет достоверную связь с жесткостью миокарда. Можно предполагать, что высокий уровень натрия, депонированного в миокарде, является самостоятельным фактором, изменяющим жесткость миокарда и, по-видимому, влияющим на формирование диастолической дисфункции миокарда.</p></trans-abstract><kwd-group xml:lang="en"><kwd>sodium</kwd><kwd>myocardial stiffness</kwd><kwd>glycosaminoglycans</kwd><kwd>hypertensive disease</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>натрий</kwd><kwd>жесткость миокарда</kwd><kwd>гликозаминогликаны</kwd><kwd>гипертоническая болезнь</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Rakova N, Jüttner K, Dahlmann A, Schröder A, Linz P, Kopp C et al. Long-Term Space Flight Simulation Reveals Infradian Rhythmicity in Human Na+ Balance. Cell Metabolism. 2013;17(1):125-131. doi:10.1016/j.cmet.2012.11.013</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Clark AL, Cleland JGF. 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