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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">inovmed</journal-id><journal-title-group><journal-title xml:lang="ru">Инновационная медицина Кубани</journal-title><trans-title-group xml:lang="en"><trans-title>Innovative Medicine of Kuban</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2541-9897</issn><publisher><publisher-name>Scientific Research Institute – Ochapovsky Regional Clinical Hospital No. 1</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35401/2541-9897-2022-25-3-13-19</article-id><article-id custom-type="elpub" pub-id-type="custom">inovmed-568</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Применение аминокислот с разветвленной боковой цепью для уменьшения повреждений скелетных мышц, вызванных физическими нагрузками</article-title><trans-title-group xml:lang="en"><trans-title>Use of branched-chain amino acids for reducing exercise-caused skeletal muscle damage</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2945-575X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леднев</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lednev</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леднев Егор Михайлович - младший научный сотрудник, травматолог-ортопед, лаборатория физиологии мышечной деятельности.</p><p>123007, Москва, Хорошевское ш., 76А</p></bio><bio xml:lang="en"><p>Egor M. Lednev - Junior researcher, Traumatologist-Orthopedist, Muscle Physiology Laboratory.</p><p>76A, Khoroshevskoe hwy., Moscow, 123007</p></bio><email xlink:type="simple">ledhauz@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5407-0432</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дубров</surname><given-names>В. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubrov</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дубров Вадим Эрикович - доктор медицинских наук, профессор, заведующий кафедрой общей и специализированной хирургии, факультет фундаментальной медицины.</p><p>Москва</p></bio><bio xml:lang="en"><p>Vadim E. Dubrov - Dr. Sci. (Med.), Professor, Head of Department of General and Specialized Surgery, Faculty of Fundamental Medicine.</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3981-244X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попов</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Popov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Попов Даниил Викторович - доктор биологических наук, ведущий научный сотрудник, заведующий, лаборатория физиологии мышечной деятельности.</p><p>Москва</p></bio><bio xml:lang="en"><p>Daniil V. Popov - Dr. Sci. (Bio.), Leading Researcher, Head of Muscle Physiology Laboratory.</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный научный центр Российской Федерации – Институт медико-биологических проблем, Российская академия наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Science Center of Russian Federation – Institute of Biomedical Problems of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>13</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Леднев Е.М., Дубров В.Э., Попов Д.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Леднев Е.М., Дубров В.Э., Попов Д.В.</copyright-holder><copyright-holder xml:lang="en">Lednev E.M., Dubrov V.E., Popov D.V.</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.innovmedkub.ru/jour/article/view/568">https://www.innovmedkub.ru/jour/article/view/568</self-uri><abstract><sec><title>Введение</title><p>Введение: Повреждение скелетных мышц (прямое и викарное) замедляет процессы восстановления пациентов с травмами опорно-двигательного аппарата, в том числе в раннем послеоперационном периоде. Увеличение жесткости внеклеточного матрикса скелетной мышцы позволяет снизить болевой синдром, отек тканей, ускорить восстановление сократительной способности.</p></sec><sec><title>Цель исследования</title><p>Цель исследования: Изучение влияния приема аминокислот c разветвленной боковой цепью на экспрессию генов IGF1, коллагенов 1-, 3- и 5-го типа, являющихся ключевыми в составе внеклеточного матрикса скелетной мышцы, и поврежденность мышечных мембран на фоне хронического повреждения скелетных мышц.</p></sec><sec><title>Материал и методы</title><p>Материал и методы: 12 молодых здоровых мужчин 19 (18; 22) лет, спортсмены-лыжники в течение 10 недель принимали плацебо (мальтодекстрин, по 100 мг/кг массы тела/день; n = 6) или смесь аминокислот (лейцин, изолейцин, валин в количестве 50:25:25 мг/кг массы тела/день, соответственно; n = 6) ежедневно на фоне большого объема аэробных высокоинтенсивных тренировок (до 22 ч/нед.). До и после приема им выполнялась биопсия латеральной головки четырехглавой мышцы бедра, а также в ходе эксперимента осуществлялся забор венозной крови.</p></sec><sec><title>Результаты</title><p>Результаты: Прием лейцина на фоне тренировок привел не только к выраженному росту уровня белка IGF1 в крови в 1,5 раза, что соответствует литературным данным, но и тенденции к приросту экспрессии мРНК IGF1Ea в 1,8 раза в скелетной мышце. Также снизился уровень маркеров поврежденности мышечных мембран – активности КФК и миоглобина. Кроме того, изменения экспрессии IGF1-зависимых генов коллагенов сильно коррелировали с изменением экспрессии IGF1Ea, но не IGF1 в крови (объединенная группа, n = 12). Таким образом, прием лейцина в составе незаменимых аминокислот позволяет снизить повреждения скелетных мышц, вызванные избыточными физическими нагрузками, гиподинамией или прямыми травмами.</p></sec><sec><title>Заключение</title><p>Заключение: Прием аминокислот c разветвленной боковой цепью в течение 10 недель лицами с подтвержденным хроническим повреждением мышечных мембран вызвал рост базального уровня IGF1 в крови и тенденцию к росту экспрессии мРНК IGF1Ea в скелетных мышцах, а также способствовал умеренному снижению поврежденности мышечных мембран скелетных мышц.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: Skeletal muscles damage (direct and vicarious) slows down the recovery processes in patients with injuries of the musculoskeletal system. It occurs in the early postoperative period as well. An increase in the rigidity of the skeletal muscle extracellular matrix can reduce pain, tissue swelling, and accelerate the recovery of contractility.</p></sec><sec><title>Objective</title><p>Objective: The analyses of the effect of branched-chain amino acids (BCAAs) intake on the expression of IGF1 genes, type 1, 3 and 5 collagen, which are crucial in the composition of the skeletal muscle extracellular matrix, as well as on the muscle membrane damage against the background of chronic damage to skeletal muscles.</p></sec><sec><title>Material and methods</title><p>Material and methods: 12 young healthy male subjects, skiers aged 19 (18; 22) received a placebo treatment (maltodextrin, 100 mg/kg body weight/day; n = 6) or a mixture of amino acids (leucine, isoleucine, valine – 50:25:20 mg/kg body weight/day respectively; n = 6). The treatment was received daily against the background of a large amount of aerobic high-intensity training (up to 22 hours per week). Before and after the amino acids intake a biopsy of the musculus vastus lateralis was performed, and venous blood samples were taken during the experiment.</p></sec><sec><title>Results</title><p>Results: The intake of leucine against the background of training led not only to a pronounced increase in the level of IGF1 protein in blood by 1.5 times (which corresponds to the literature data), but also to a trend towards an increase in the expression of IGF1Ea mRNA by 1.8 times in the skeletal muscle, and a decrease in the level of markers of muscle membranes damage – creatine phosphokinase (CPK) activity and myoglobin. In addition, changes in the IGF1-dependent collagen genes expression strongly correlated with changes in IGF1Ea expression, but not with IGF1 protein in blood (pooled group, n = 12). Thus, the intake of leucine as a part of the essential amino acids can reduce damage to skeletal muscles caused by excessive physical activity, lack of physical activity, or direct trauma.</p></sec><sec><title>Conclusion</title><p>Conclusion: A 10-week BCAAs intake by individuals with documented chronic muscle membrane damage caused an increase of basal levels of IGF1 in blood and a trend towards increased IGF1Ea mRNA expression in skeletal muscle, and also caused a modest reduction in damage of skeletal muscle membrane.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>опорно-двигательный аппарат</kwd><kwd>скелетная мышца</kwd><kwd>повреждение</kwd><kwd>внеклеточный матрикс</kwd><kwd>тренировки</kwd><kwd>коллаген</kwd></kwd-group><kwd-group xml:lang="en"><kwd>musculoskeletal system</kwd><kwd>skeletal muscle</kwd><kwd>damage</kwd><kwd>extracellular matrix</kwd><kwd>training</kwd><kwd>collagen</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">Harty PS, Cottet ML, Malloy JK, et al. 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