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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">10.47470/0016-9900-2020-99-10-1149-1152</article-id><article-id custom-type="elpub" pub-id-type="custom">medlit-1079</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>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Экспериментальное исследование гонадотоксического эффекта дыма лесных пожаров</article-title><trans-title-group xml:lang="en"><trans-title>Experimental study of the gonadotoxic effect of forest fire smoke</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6100-6292</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новиков</surname><given-names>Михаил Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Novikov</surname><given-names>Mikhail A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. биол. наук, науч. сотр. лаб. биомоделирования и трансляционной медицины ФГБНУ «Восточно-Сибирский институт медико-экологических исследований». </p><p>e-mail: novik-imt@mail.ru</p></bio><bio xml:lang="en"><p>MD, Ph.D., researcher of the Laboratory of biomodeling and translational medicine, East-Siberian Institute of Medical and Ecological Research, Angarsk, 665827, Russian Federation.</p><p>e-mail: novik-imt@mail.ru</p></bio><email xlink:type="simple">novik-imt@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/0000-0002-8165-8052</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вокина</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vokina</surname><given-names>Vera A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-3709-8676</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андреева</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreeva</surname><given-names>Elizaveta S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0003-4980-5304</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексеенко</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseenko</surname><given-names>Anton N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sosedova</surname><given-names>Larisa M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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></aff><aff xml:lang="en"><institution>East-Siberian Institute of Medical and Ecological Research</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>01</day><month>12</month><year>2020</year></pub-date><volume>99</volume><issue>10</issue><fpage>1149</fpage><lpage>1152</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Новиков М.А., Вокина В.А., Андреева Е.С., Алексеенко А.Н., Соседова Л.М., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Новиков М.А., Вокина В.А., Андреева Е.С., Алексеенко А.Н., Соседова Л.М.</copyright-holder><copyright-holder xml:lang="en">Novikov M.A., Vokina V.A., Andreeva E.S., Alekseenko A.N., Sosedova L.M.</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/1079">https://www.rjhas.ru/jour/article/view/1079</self-uri><abstract><sec><title>Введение</title><p>Введение. Изучение последствий задымления воздуха при природных пожарах на репродуктивную систему является актуальной научной проблемой в настоящее время.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Половозрелых беспородных крыс-самцов подвергали ежедневному ингаляционному воздействию дыма в течение одной и четырёх недель соответственно по 4 ч в день. Сразу после окончания воздействия животных декапитировали под лёгким эфирным наркозом для проведения исследования морфофункционального состояния репродуктивной системы, которое включало в себя подсчёт общего количества сперматогониев, числа канальцев со слущенным эпителием, а также определение индекса сперматогенеза и количества клеток Лейдига.</p></sec><sec><title>Результаты</title><p>Результаты. Показатели функционального состояния репродуктивной системы самцов белых крыс после экспозиции дымом в течение 1 нед не имели статистически значимых отличий по сравнению с показателями животных контрольной группы. В то же время увеличение длительности воздействия (4 нед) привело к значительным морфофункциональным нарушениям репродуктивной системы самцов белых крыс, характеризовавшимся снижением индекса сперматогенеза с одновременным сокращением процентного содержания сперматогониев и количества интерстициальных клеток Лейдига.</p></sec><sec><title>Заключение</title><p>Заключение. Результаты проведённого исследования свидетельствуют о том, что длительное воздействие продуктов горения, выделяющихся при лесном пожаре, привело к угнетению репродуктивной функции у самцов белых крыс.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The study of the effects of air smoke during natural fires on the reproductive system is the actual scientific problem at present. </p></sec><sec><title>Material and methods</title><p>Material and methods. The experimental study took place in 2 stages. At the first stage of the study, white male rats were exposed to the smoke-bearing effects of wildfire for 7 days (4 hours a day), and at the second stage, 5 days a week (4 hours a day) for one month. Immediately after the end of the exposure, the animals were decapitated under light ether anesthesia to study the morphofunctional state of the reproductive system, which included counting the total number of spermatogonia, the number of tubules with desquamated epithelium, as well as determining the spermatogenesis index and the number of Leydig cells.</p></sec><sec><title>Results</title><p>Results. The functional state of the reproductive system of male white rats after exposure to smoke for 1 week did not have statistically significant differences from the animals of the control group. At the same time, an increment in the duration of exposure (4 weeks) led to significant morphological and functional disorders of the reproductive system of male white rats, characterized by a decrease in the spermatogenesis index with a simultaneous decrease in the percentage of spermatogonia and the number of interstitial Leydig cells.</p></sec><sec><title>Discussion</title><p>Discussion. Male reproductive health can be a sensitive marker of environmental factors, and there is no evidence of smoke from natural fires in modern literature. This study justifies the need to develop new approaches to the diagnosis and prevention of adverse effects on the body for a long stay in a smoke area.</p></sec><sec><title>Conclusion</title><p>Conclusion. The results of the study indicate the prolonged exposure to combustion products released during a forest fire to lead to inhibition of reproductive function in male white rats.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>природный пожар</kwd><kwd>крысы</kwd><kwd>репродуктивная система</kwd><kwd>сперматогенез</kwd></kwd-group><kwd-group xml:lang="en"><kwd>natural fire</kwd><kwd>rats</kwd><kwd>reproductive system</kwd><kwd>spermatogenesis</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">Delfino R.J., Brummel S., Wu J., Stern H., Ostro B., Lipsett M., et al. The relationship of respiratory and cardiovascular hospital admissions to the southern California wildfires of 2003. Occup. Environ. 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