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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2020-64-4-448-456</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-902</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>БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Молекулярная природа цитотоксичности наноструктур оксида цинка</article-title><trans-title-group xml:lang="en"><trans-title>Molecular nature of cytotoxicity of zinc oxide nanostructures</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>Гармаза</surname><given-names>Ю. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Harmaza</surname><given-names>Yu. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гармаза Юлия Михайловна - кандидат биологических наук, ведущий научный сотрудник.</p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Harmaza Yuliya M. - Ph. D. (Biology), Leading researcher. Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus.</p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">garmaza@yandex.ru</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>Тамашевский</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tamashevski</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тамашевский Александр Владимирович - кандидат биологических наук, ведущий научный сотрудник.</p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Tamashevski Alexander V. - Ph. D. (Biology), Leading researcher. Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus.</p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">tayzoe@mail.ru</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>Слобожанина</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Slobozhanina</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Слобожанина Екатерина Ивановна - член-корреспондент, доктор биологических наук, профессор, заведующий лабораторией.</p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Slobozhanina Ekaterina I. - Corresponding Member, D. Sc. (Biology), Professor, Head of the Laboratory. Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus.</p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">slobozhanina@ibp.org.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биофизики и клеточной инженерии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>08</month><year>2020</year></pub-date><volume>64</volume><issue>4</issue><fpage>448</fpage><lpage>456</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гармаза Ю.М., Тамашевский А.В., Слобожанина Е.И., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Гармаза Ю.М., Тамашевский А.В., Слобожанина Е.И.</copyright-holder><copyright-holder xml:lang="en">Harmaza Y.M., Tamashevski A.V., Slobozhanina E.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://doklady.belnauka.by/jour/article/view/902">https://doklady.belnauka.by/jour/article/view/902</self-uri><abstract><p>Проведен сравнительный анализ молекулярных процессов, вызванных воздействием наноструктурированного оксида цинка разной формы (стержни и сферические частицы), а также хлоридом цинка как источника свободных ионов на лимфоциты человека. Выявлено снижение процента жизнеспособных клеток при инкубации их в течение 20 и 40 ч с наноструктурами оксида цинка и хлоридом цинка за счет увеличения внутриклеточной концентрации лабильного пула Zn2+. Обнаружено, что наименьшей цитотоксичностью обладают наностержни оксида цинка, а наибольшей - хлорид цинка. Возможным механизмом цитотоксичного действия данных агентов выступает Zn-опосредованная активация свободнорадикальных процессов в клетке - увеличение накопления активных форм кислорода в модифицированных лимфоцитах. Таким образом, форма наноматериала и его способность «отдавать» ионы цинка вносят основной вклад в обнаруженные клеточные молекулярные процессы in vitro.</p></abstract><trans-abstract xml:lang="en"><p>A comparative analysis of the molecular process of nanostructured zinc oxide of different shape (rod and spherical particle) and zinc chloride as a source of free ions on human lymphocytes was carried out. Our data indicated that ZnO nanostructures induced a decrease in the lymphocyte viability and an increase in the intracellular labile Zn2+ pool in a concentration-dependent manner after 20 and 40 h incubation with cells. It was found that ZnO NRs have the lowest cytotoxicity, but ZnCl2 - the highest. The Zn-mediated activation of free radical processes - ROS accumulation in the cells -is a possible mechanism of the cytotoxic action of these agents. Thus, the shape of ZnO nanomaterial and its ability “to shed” zinc ions make the main contribution to the detected molecular and membrane process on human lymphocytes in vitro.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лимфоциты человека</kwd><kwd>наностержни и наночастицы оксида цинка</kwd><kwd>жизнеспособность</kwd><kwd>лабильный пул цинка</kwd><kwd>активные формы кислорода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>human lymphocytes</kwd><kwd>zinc oxide nanorods and nanoparticles</kwd><kwd>viability</kwd><kwd>a label zinc pool</kwd><kwd>reactive oxygen species</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность заведующему лабораторией Института атомной физики и спектроскопии Латвийского университета (г. Рига, Латвия) канд. физ.-мат. наук Р. В. Витеру за предоставленные образцы наноструктурированного оксида цинка. Работа поддержана грантом БРФФИ (проект Б17-128).</funding-statement><funding-statement xml:lang="en">The authors are grateful to the Head of the Laboratory of Institute of Atomic Physics and Spectroscopy of the University of Latvia (Riga, Latvia) Ph. D. R. V. Viter for the provided samples of nanostructured zinc oxide. This work was supported by the BRFFR (grant Б17-128).</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">The size of zinc oxide nanoparticles controls its toxicity through impairing autophagic flux in A549 lung epithelial cells / B. Wang [et al.] // Toxicol. Lett. - 2018. - Vol. 285. - P. 51-59. https://doi.org/10.1016/j.toxlet.2017.12.025</mixed-citation><mixed-citation xml:lang="en">Wang B., Zhang J., Chen C., Xu G., Qin X., Hong Y., Bose D. D., Qiu F., Zou Z. 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