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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">cfpd</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень физиологии и патологии дыхания</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin Physiology and Pathology of Respiration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-5029</issn><publisher><publisher-name>Дальневосточный научный центр физиологии и патологии дыхания</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36604/1998-5029-2021-79-95-102</article-id><article-id custom-type="elpub" pub-id-type="custom">cfpd-864</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 ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Возрастные различия реактивности респираторного отдела лёгких крыс после введения хлорида магния</article-title><trans-title-group xml:lang="en"><trans-title>Age-related differences in the reactivity of the respiratory division of lungs in rats after administration of magnesium chloride</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>Янко</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yanko</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Васильевич Янко, канд. биол. наук, старший научный сотрудник, отдел клинической физиологии соединительной ткани </p><p>01024, г. Киев, ул. Богомольца, 4</p></bio><bio xml:lang="en"><p>Roman V. Yanko, PhD (Biol.), Senior Staff Scientist, Department of Clinical Physiology of Connective Tissue </p><p>4 Bogomoletz Str., Kiev, 01024</p></bio><email xlink:type="simple">biolag@ukr.net</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чака</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Chaka</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Георгиевна Чака, канд. биол. наук, старший научный сотрудник, отдел клинической физиологии соединительной ткани </p><p>01024, г. Киев, ул. Богомольца, 4</p></bio><bio xml:lang="en"><p>Elena G. Chaka, PhD (Biol.), Senior Staff Scientist, Department of Clinical Physiology of Connective Tissue </p><p>4 Bogomoletz Str., Kiev, 01024</p></bio><email xlink:type="simple">lenchaka@ukr.net</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Левашов</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Levashov</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Иванович Левашов, д-р мед. наук, зав. отделом клинической физиологии соединительной ткани </p><p>01024, г. Киев, ул. Богомольца, 4</p></bio><bio xml:lang="en"><p>Mikhail I. Levashov, PhD, DSc (Med.), Head of the Department of Clinical Physiology of Connective Tissue </p><p>4 Bogomoletz Str., Kiev, 01024</p></bio><email xlink:type="simple">levashov@biph.kiev.ua</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физиологии им. А.А.Богомольца Национальной академии наук Украины</institution></aff><aff xml:lang="en"><institution>Bogomoletz Institute of Physiology of National Academy of Sciences of Ukraine</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>04</month><year>2021</year></pub-date><volume>0</volume><issue>79</issue><fpage>95</fpage><lpage>102</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Янко Р.В., Чака Е.Г., Левашов М.И., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Янко Р.В., Чака Е.Г., Левашов М.И.</copyright-holder><copyright-holder xml:lang="en">Yanko R.V., Chaka E.G., Levashov M.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://cfpd.elpub.ru/jour/article/view/864">https://cfpd.elpub.ru/jour/article/view/864</self-uri><abstract><sec><title>Введение</title><p>Введение. Магний принимает непосредственное участие в регуляции функционирования лёгких. Однако эффективность применения различных препаратов магния для активации функции лёгких не является однозначной. Одной из причин этого могут быть возрастные различия в характере структурных и функциональных изменений лёгких в ответ на введение магния.</p></sec><sec><title>Цель</title><p>Цель. Исследование состояния респираторного отдела лёгких крыс разного возраста в ответ на продолжительное введение хлорида магния.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Эксперименты были выполнены на 48 крысах-самцах линии Вистар 3-х и 15-месячного возраста. Подопытные животные, в дополнение к стандартному рациону питания, ежедневно в течение 21 суток получали хлорид магния в дозе 50 мг/кг массы тела. По окончании эксперимента отбирали образцы ткани лёгких для гистоморфологических и биохимических исследований.</p></sec><sec><title>Результаты</title><p>Результаты. По завершении эксперимента у 3-месячных крыс, получавших хлорид магния, отмечали увеличение размеров альвеол и относительной площади воздушных пространств, при уменьшении относительной площади паренхимы и стромы. Снижение толщины межальвеолярной перегородки и концентрации оксипролина в ткани лёгких у этих крыс может свидетельствовать об уменьшении количества элементов соединительной ткани. У 15-месячных подопытных животных, наоборот, наблюдали достоверное увеличение относительной площади паренхимы и стромы лёгких (на 14%) при снижении относительной площади воздушных пространств (на 12%) и увеличении концентрации оксипролина в лёгких (на 21%).</p></sec><sec><title>Заключение</title><p>Заключение. Результаты исследований свидетельствуют о возрастных различиях в изменении морфологических и биохимических показателей, характеризующих состояние респираторного отдела лёгких при продолжительном введении хлорида магния. Характер и степень выраженности этих изменений дают основание полагать, что у 3-месячных крыс магний повышал активность лёгких, а у 15-ти месячных животных, наоборот, снижал.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Magnesium is directly involved in the regulation of lung function. However, the effectiveness of various magnesium preparations for activating lung function is not unambiguous. One of the reasons for this may be age-related differences in the nature of structural and functional changes in the lungs in response to the administration of magnesium.</p></sec><sec><title>Aim</title><p>Aim. To study the reactivity of the lungs respiratory division of different ages rats to prolonged administration of magnesium chloride.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The experiments were performed on 48 male Wistar rats of 3 and 15 months of age. The experimental animals, in addition to the standard diet, received magnesium chloride at a dose of 50 mg/kg body weight daily for 21 days. At the end of the experiment, lung tissue samples were taken for histomorphological and biochemical studies.</p></sec><sec><title>Results</title><p>Results. At the end of the experiment, 3-month-old rats treated with magnesium chloride showed an increase in the size of the alveoli, a decrease in the relative area of the parenchyma and stroma, and an increase in the relative area of air spaces. A decrease in the thickness of the interalveolar septum and the concentration of oxyproline in the lung tissue of these rats may indicate a decrease in the number of connective tissue elements. In 15- month-old experimental animals, on the contrary, an increase in the relative area of the parenchyma and stroma of the lungs (by 14%), a decrease in the relative area of air spaces (by 12%), and an increase in the concentration of oxyproline in the lungs (by 21%) were observed.</p></sec><sec><title>Conclusion</title><p>Conclusion. Thus, the research results indicate age-related differences in changes in morphological and biochemical parameters characterizing the state of the respiratory division of the lungs with prolonged administration of magnesium chloride. The nature and severity of these changes suggests that in 3-month-old rats magnesium increased lung activity, and in 15-month-old animals, on the contrary, it decreased.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>хлорид магния</kwd><kwd>регуляция функции легких</kwd><kwd>респираторный отдел лёгких</kwd><kwd>структурные и функциональные изменения лёгких</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnesium chloride</kwd><kwd>regulation of lung function</kwd><kwd>respiratory division of the lungs</kwd><kwd>structural and functional changes of the lungs.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания «Институт физиологии им. А.А.Богомольца НАН Украины» (№ 0116U004472). Также эта работа частично поддержана из средств НАН Украины для поддержки развития приоритетных направлений исследований (№ 0118U007344)</funding-statement><funding-statement xml:lang="en">The work was performed as part of the state assignment “Bogomoletz Institute of Physiology of NAS of Ukraine" (No. 0116U004472). Also this work was partly supported from funds of National Academy of Sciences of Ukraine to support the development of priority areas of research SRN (State Registration Number) 0118U007344</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">Schwalfenberg G.K., Genuis S.J. The importance of magnesium in clinical healthcare // Scientifica (Cairo). 2017. Vol.2017. Article ID 4179326. doi:10.1155/2017/4179326</mixed-citation><mixed-citation xml:lang="en">Schwalfenberg G.K., Genuis S.J. The importance of magnesium in clinical healthcare. 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