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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">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">72105</article-id><article-id pub-id-type="doi">10.17816/KMJ2021-501</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Experimental medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальная медицина</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">Comparative characteristics of various fibrous materials in in vitro experiments</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительная характеристика различных волокнистых материалов в экспериментах in vitro</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2479-2474</contrib-id><name-alternatives><name xml:lang="en"><surname>Timerbulatova</surname><given-names>G A</given-names></name><name xml:lang="ru"><surname>Тимербулатова</surname><given-names>Гюзель Абдулхалимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ragura@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dunaev</surname><given-names>P D</given-names></name><name xml:lang="ru"><surname>Дунаев</surname><given-names>Павел Дмитриевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dunaevpavel@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dimiev</surname><given-names>A M</given-names></name><name xml:lang="ru"><surname>Димиев</surname><given-names>Айрат Маратович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ayrat_dimiev@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gabidinova</surname><given-names>G F</given-names></name><name xml:lang="ru"><surname>Габидинова</surname><given-names>Гульназ Фаезовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gabidinova26@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khaertdinov</surname><given-names>N N</given-names></name><name xml:lang="ru"><surname>Хаертдинов</surname><given-names>Наиль Назимович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaertdinofnn@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fakhrullin</surname><given-names>R F</given-names></name><name xml:lang="ru"><surname>Фахруллин</surname><given-names>Равиль Фаридович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kazanbio@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Boichuk</surname><given-names>S V</given-names></name><name xml:lang="ru"><surname>Бойчук</surname><given-names>Сергей Васильевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>boichuksergei@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fatkhutdinova</surname><given-names>L M</given-names></name><name xml:lang="ru"><surname>Фатхутдинова</surname><given-names>Лилия Минвагизовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>liliya.fatkhutdinova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kazan State Medical University</institution></aff><aff><institution xml:lang="ru">Казанский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Center of Hygiene and Epidemiology in the Republic of Tatarstan</institution></aff><aff><institution xml:lang="ru">Центр гигиены и эпидемиологии в Республике Татарстан</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Kazan Federal University</institution></aff><aff><institution xml:lang="ru">Казанский (Приволжский) федеральный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-08-08" publication-format="electronic"><day>08</day><month>08</month><year>2021</year></pub-date><volume>102</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>501</fpage><lpage>509</lpage><history><date date-type="received" iso-8601-date="2021-06-24"><day>24</day><month>06</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-07-22"><day>22</day><month>07</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Timerbulatova G.A., Dunaev P.D., Dimiev A.M., Gabidinova G.F., Khaertdinov N.N., Fakhrullin R.F., Boichuk S.V., Fatkhutdinova L.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Тимербулатова Г.А., Дунаев П.Д., Димиев А.М., Габидинова Г.Ф., Хаертдинов Н.Н., Фахруллин Р.Ф., Бойчук С.В., Фатхутдинова Л.М.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Timerbulatova G.A., Dunaev P.D., Dimiev A.M., Gabidinova G.F., Khaertdinov N.N., Fakhrullin R.F., Boichuk S.V., Fatkhutdinova L.M.</copyright-holder><copyright-holder xml:lang="ru">Тимербулатова Г.А., Дунаев П.Д., Димиев А.М., Габидинова Г.Ф., Хаертдинов Н.Н., Фахруллин Р.Ф., Бойчук С.В., Фатхутдинова Л.М.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2024-08-08"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/72105">https://kazanmedjournal.ru/kazanmedj/article/view/72105</self-uri><abstract xml:lang="en"><p><bold>Aim.</bold> Comparative assessment of the effect of fibrous materials on cell cultures RAW264.7 and BEAS-2B.</p> <p><bold>Methods.</bold> The effects of various fibrous materials — single-walled carbon nanotubes of two types (SWCNT-1 and SWCNT-2), differing in morphological characteristics, and chrysotile asbestos as a positive control — was assessed on two cell lines macrophages RAW 264.7 and human bronchial epithelium BEAS-2B cells. The studied materials’ concentration range for experiments on cells was selected taking into account the SWCNT content in the air of the working area and the subsequent modeling of SWCNT deposition in the human respiratory tract. Suspensions of the studied materials were prepared based on cell culture media by ultrasonication. Cytotoxicity assessment after 48 hours of incubation was performed by using the MTS colorimetric assay. The expression level of apoptosis mar¬kers was assessed by immunoblotting using the corresponding monoclonal antibodies. Visualization of SWCNT-1, SWCNT-2 and chrysotile asbestos in BEAS-2B cell cultures was carried out by improved dark-field microscopy.</p> <p><bold>Results.</bold> According to dark-field microscopy, all the studied fibrous materials were found on the surface or cytoplasm of the cells. SWCNT and chrysotile asbestos did not have a direct cytotoxic effect in the MTS assay and did not induce apoptosis according to the results of Western blotting in cell cultures of RAW264.7 macrophages and BEAS-2B bronchial epithelium. In the cells of the bronchial epithelium (BEAS-2B) that showed greater sensitivity, a slight increase in the expression of pro-apoptotic protein PARP, which was more pronounced for shorter SWCNT-2, was revealed.</p> <p><bold>Conclusion.</bold> Both types of SWCNTs, despite the differences in morphological characteristics, demonstrated similar effects in in vitro experiments; this result, with its further verification, can have an important practical application in justifying approaches to determining the safety criteria for single-walled carbon nanotubes as a class of nanomaterials of the same type.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель.</bold> Сравнительная оценка воздействия волокнистых материалов на клеточных культурах RAW264.7 и BEAS-2B.</p> <p><bold>Методы.</bold> На двух клеточных линиях — макрофагах RAW 264.7 и клетках человеческого бронхиального эпителия BEAS-2В — оценивали воздействие различных волокнистых материалов: неочищенных одностенных углеродных нанотрубок двух типов (ОУНТ-1 и ОУНТ-2), различавшихся длиной и другими морфологическими характеристиками, и хризотил-асбеста в качестве положительного контроля. Диапазон концентраций исследуемых веществ для внесения в клетки был выбран с учётом содержания ОУНТ в воздухе рабочей зоны и последующего моделирования депонирования ОУНТ в дыхательных путях человека. Суспензии исследуемых материалов были подготовлены на основе клеточных культуральных сред методом ультразвуковой соникации. Оценку цитотоксичности после 48-часового культивирования клеток проводили с помощью колометрического MTS-теста. Методом иммуноблоттинга оценивали уровень экспрессии белков-маркёров апоптоза с использованием соответствующих моноклональных антител. Визуализация ОУНТ-1, ОУНТ-2 и хризотил-асбеста в культурах клеток BEAS-2B проведена методом улучшенной темнопольной микроскопии.</p> <p><bold>Результаты.</bold> По данным темнопольной микроскопии все изученные волокнистые материалы обнаружены на поверхности или в цитоплазме клеток. ОУНТ и хризотил-асбест не оказывали прямого цитотоксического действия в МТS-тесте и не вызывали апоптоз по результатам вестерн-блота в клеточных культурах макрофагов RAW264.7 и бронхиального эпителия BEAS-2B. В проявивших большую чувствительность клетках бронхиального эпителия (BEAS-2B) выявлено небольшое повышение экспрессии сигнального апоптического белка ПАРП [поли-(АДФ-рибозил)-полимераза], более выраженное для более коротких ОУНТ-2.</p> <p><bold>Вывод.</bold> Оба типа одностенных углеродных нанотрубок, несмотря на различия в морфологических характеристиках, демонстрировали схожие эффекты в экспериментах in vitro; этот результат при его дальнейшей верификации может иметь важное практическое применение при обосновании подходов к определению критериев безопасности одностенных углеродных нанотрубок как однотипного класса наноматериалов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>single-walled carbon nanotubes</kwd><kwd>RAW264.7 macrophages</kwd><kwd>bronchial epithelial BEAS-2B cells</kwd><kwd>dark-field microscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>одностенные углеродные нанотрубки</kwd><kwd>макрофаги RAW264.7</kwd><kwd>клетки бронхиального эпителия BEAS-2B</kwd><kwd>темнопольная микроскопия</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта №19-315-90046. 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