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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">medlit</journal-id><journal-title-group><journal-title xml:lang="ru">Гигиена и санитария</journal-title><trans-title-group xml:lang="en"><trans-title>Hygiene and Sanitation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0016-9900</issn><issn pub-type="epub">2412-0650</issn><publisher><publisher-name>Federal Scientific Center of Hygiene named after F.F. Erisman</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47470/0016-9900-2024-103-6-597-603</article-id><article-id custom-type="edn" pub-id-type="custom">qxdsfk</article-id><article-id custom-type="elpub" pub-id-type="custom">medlit-4138</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>ПРОФИЛАКТИЧЕСКАЯ ТОКСИКОЛОГИЯ И ГИГИЕНИЧЕСКОЕ НОРМИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PREVENTIVE TOXICOLOGY AND HYGIENIC STANDARTIZATION</subject></subj-group></article-categories><title-group><article-title>Генотоксический эффект нанокомпозита селена арабиногалактана на ядросодержащие клетки крови</article-title><trans-title-group xml:lang="en"><trans-title>Genotoxic effect of selenium arabinogalactan nanocomposite on nucleated blood cells</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9406-5424</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тютрина</surname><given-names>Вера Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Tyutrina</surname><given-names>Vera A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. фарм. наук, науч. сотр. лаб. биомоделирования и трансляционной медицины ФГБНУ «ВСИМЭИ», 665826, Ангарск, Россия</p><p>e-mail: tyutrina.v.a@yandex.ru</p></bio><bio xml:lang="en"><p>MD, PhD (Pharm), researcher at the Laboratory of biomodelling and translational medicine of the East-Siberian Institute of Medical and Ecological Research, Angarsk, 665826, Russian Federation</p><p>e-mail: tyutrina.v.a@yandex.ru</p></bio><email xlink:type="simple">tyutrina.v.a@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1052-4601</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соседова</surname><given-names>Лариса Михайловна</given-names></name><name name-style="western" xml:lang="en"><surname>Sosedova</surname><given-names>Larisa M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, профессор, зав. лаб. биомоделирования и трансляционной медицины ФГБНУ «ВСИМЭИ», 665826, Ангарск, Россия</p><p>e-mail: sosedlar@mail.ru</p></bio><bio xml:lang="en"><p>MD, PhD, DSci (Med), Professor, Head of the Laboratory of biomodelling and translational medicine of the East-Siberian Institute of Medical and Ecological Research, Angarsk, 665826, Russian Federation</p><p>e-mail: sosedlar@mail.ru</p></bio><email xlink:type="simple">sosedlar@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0665-8060</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титов</surname><given-names>Евгений Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Titov</surname><given-names>Evgeniy A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. биол. наук, ст. науч. сотр. лаб. биомоделирования и трансляционной медицины ФГБНУ «ВСИМЭИ», 665826, Ангарск, Россия</p><p>e-mail: g57097@yandex.ru</p></bio><bio xml:lang="en"><p>MD, PhD (Biol), senior researcher, Laboratory of biomodelling and translational medicine of the East-Siberian Institute of Medical and Ecological Research, Angarsk, 665826, Russian Federation</p><p>e-mail: g57097@yandex.ru</p></bio><email xlink:type="simple">g57097@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Восточно-Сибирский институт медико-экологических исследований»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>East-Siberian Institute of Medical and Ecological Research</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>17</day><month>07</month><year>2024</year></pub-date><volume>103</volume><issue>6</issue><fpage>597</fpage><lpage>603</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тютрина В.А., Соседова Л.М., Титов Е.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тютрина В.А., Соседова Л.М., Титов Е.А.</copyright-holder><copyright-holder xml:lang="en">Tyutrina V.A., Sosedova L.M., Titov E.A.</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.rjhas.ru/jour/article/view/4138">https://www.rjhas.ru/jour/article/view/4138</self-uri><abstract><sec><title>Введение</title><p>Введение. Наночастицы Se, применяемые в различных областях, привлекают внимание исследователей благодаря своим необычным свойствам. Наряду с очевидными преимуществами наночастицы Se оказывают и токсическое воздействие, поэтому для успешного использования необходимо знать безопасные дозы. Немаловажной составляющей в развитии патологических процессов является повреждение ДНК после экспозиции наночастицами Se, что может повлечь за собой тяжёлые последствия.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Самцам белых крыс в течение 10 дней перорально вводили раствор нанокомпозита Se в дозе 500 мкг/кг. Генотоксичность исследуемого нанокомпозита оценивали методом ДНК-комет в щелочном варианте по возникновению ДНК-повреждений в клетках крови. Результаты были получены в два этапа: через одни сутки после экспозиции и через четыре месяца для выявления сохранения или отсутствия негативного эффекта.</p></sec><sec><title>Результаты</title><p>Результаты. Методом ДНК-комет было установлено, что внутрижелудочное введение нанокомпозита Se вызывает повреждения структуры ДНК, причём данный эффект наблюдается не только через одни сутки после экспозиции, но и сохраняется по прошествии четырёх месяцев.</p></sec><sec><title>Ограничения исследования</title><p>Ограничения исследования. Исследование ограничено изучением фрагментации ДНК на следующие сутки после десятидневной экспозиции самцов белых крыс нанокомпозитом Se и в отдалённом периоде — через четыре месяца.</p></sec><sec><title>Заключение</title><p>Заключение. Установлено стойкое сохранение повреждения ДНК в ядросодержащих клетках крови самцов белых крыс, что, очевидно, может быть связано с основным механизмом токсичности Se: неспецифическим замещением серы в серосодержащих аминокислотах. Однако причиной токсического воздействия нанокомпозита могут выступать также его прооксидантные свойства, что требует дальнейшего подтверждения.</p><p>Соблюдение этических стандартов. Исследование одобрено локальным этическим комитетом ФГБНУ ВСИМЭИ (протокол № 1 от 18.12.2017 г.), проведено в соответствии с Европейской конвенцией о защите позвоночных животных, используемых для экспериментов или в иных научных целях (ETS N 123), директивой Европейского парламента и Совета Европейского союза 2010/63/EC от 22.09.2010 г. о защите животных, использующихся для научных целей.</p></sec><sec><title>Участие авторов</title><p>Участие авторов:Тютрина В.А. — поиск литературы, проведение эксперимента, написание, статистическая обработка, оформление статьи;Соседова Л.М. — концепция, написание, обсуждение актуальности и результатов;Титов Е.А. — концепция, проведение эксперимента.Все соавторы — утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы декларируют отсутствие явных и потенциальных конфликтов интересов в связи с публикацией данной статьи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Работа выполнена по плану НИР в рамках государственного задания.</p></sec><sec><title>Поступила</title><p>Поступила: 13.03.2024 / Поступила после доработки: 08.04.2024 / Принята к печати: 19.06.2024 / Опубликована: 17.07.2024</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Selenium (Se) nanoparticles have attracted the interest of researchers for various applications due to their unusual properties. Despite their advantages, Se nanoparticles also have toxic effects, so for their successful use it is necessary to know the doses that are safe for the use. An important component in the development of pathological processes is the occurrence of DNA damage after exposure to Se nanoparticles, which can lead to severe disorders. </p></sec><sec><title>Materials and methods</title><p>Materials and methods. Male white rats were orally administered a solution of Se nanocomposite at a dose of 500 µg/kg for 10 days. The genotoxicity of the nanocomposite under study was assessed by the occurrence of DNA damage in blood cells using the DNA comet method in the alkaline version. The results were obtained during 2 stages: one day after exposure and after 4 months to identify the persistence or absence of a negative effect. </p></sec><sec><title>Results</title><p>Results. With using the DNA comet method, intragastric administration of Se nanocomposite was found to cause the damage to the DNA structure, and this effect persists not only 24 hours after exposure, but also 4 months later. </p></sec><sec><title>Limitations</title><p>Limitations. The study is limited to the study of DNA fragmentation on the next day after a 10-day exposure to Se nanocomposite in male white rats and during the long-term period after 4 months. </p></sec><sec><title>Conclusion</title><p>Conclusion. The study revealed persistent DNA damage in the nucleated blood cells of male albino rats, which apparently may be associated with the main mechanism of Se toxicity: nonspecific replacement of sulfur in sulfur-containing amino acids. However, the toxic effects of the nanocomposite may also be caused by its pro-oxidant properties, which requires further confirmation.</p><p>Compliance with ethical standards. The study was approved by the local Ethics Committee of the East-Siberian Institute of Medical and Ecological Research (Protocol No.1 of 12/18/2017), conducted in accordance with the European Convention for the Protection of Vertebrates Used for Experiments or Other Scientific Purposes (ETS N 123), directive of the European Parliament and the Council Of the European Union 2010/63/EC of 22.09.2010 on the protection of animals used for scientific purposes.</p></sec><sec><title>Contribution</title><p>Contribution:Tyutrina V.A. — literature search, experiment, writing, statistical processing, article design;Sosedova L.M. — concept, writing, discussion of relevance and results;Titov E.A. — concept, experiment.All authors are responsible for the integrity of all parts of the manuscript and approval of the manuscript final version.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Acknowledgment</title><p>Acknowledgment. The work was carried out according to the research plan within the framework of the state task.</p></sec><sec><title>Received</title><p>Received: March 13, 2024 / Revised: April 8, 2024 / Accepted: June 19, 2024 / Published: July 17, 2024</p></sec><sec><title> </title><p> </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>нанокомпозит селена</kwd><kwd>арабиногалактан</kwd><kwd>генотоксичность</kwd><kwd>ДНК-повреждения</kwd><kwd>метод ДНК-комет</kwd></kwd-group><kwd-group xml:lang="en"><kwd>selenium nanocomposite</kwd><kwd>arabinogalactan</kwd><kwd>genotoxicity</kwd><kwd>DNA damages</kwd><kwd>DNA comet assay</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">Kieliszek M. Selenium-fascinating microelement, properties and sources in food. 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