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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2022-7.4.5</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-3643</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>МОРФОЛОГИЯ, ФИЗИОЛОГИЯ И ПАТОФИЗИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MORPHOLOGY, PHYSIOLOGY AND PATHOPHYSIOLOGY</subject></subj-group></article-categories><title-group><article-title>Воздействие эмиссии от лесных пожаров на морфофункциональное состояние репродуктивной системы белых крыс</article-title><trans-title-group xml:lang="en"><trans-title>Effects of emissions from forest fires on the morphofunctional state of reproductive system of white rats</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>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Новиков Михаил Александрович – кандидат биологических наук, старший научный сотрудник лаборатории биомоделирования и трансляционной медицины</p><p>665826, г. Ангарск, Микрорайон 12а, 3</p></bio><bio xml:lang="en"><p>Mikhail A. Novikov – Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Biomodeling and Translational Medicine</p><p>Microdictrict 12a, 3, Angarsk 665826</p></bio><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>2022</year></pub-date><pub-date pub-type="epub"><day>01</day><month>09</month><year>2022</year></pub-date><volume>7</volume><issue>4</issue><fpage>45</fpage><lpage>51</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Новиков М.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Новиков М.А.</copyright-holder><copyright-holder xml:lang="en">Novikov M.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.actabiomedica.ru/jour/article/view/3643">https://www.actabiomedica.ru/jour/article/view/3643</self-uri><abstract><sec><title>Введение</title><p>Введение. В настоящее время, с учётом активного участия людей в ликвидации природных пожаров, изучение последствий воздействия дыма на репродуктивную систему является актуальной научной проблемой.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Половозрелых беспородных крыс-самцов подвергали ежедневному четырёхчасовому ингаляционному воздействию дыма в течение одного месяца. Сразу после окончания воздействия часть животных выводили из эксперимента, часть оставляли на дожитие в течение двух месяцев. Исследование на образцах семенников 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. Воздействие дыма лесного пожара на репродуктивную систему модельных животных (беспородные лабораторные крысы-самцы) характеризовалось снижением индекса сперматогенеза с одновременным сокращением процентного содержания сперматогониев и количества интерстициальных клеток Лейдига. Показатели репродуктивной системы животных, оставленных на дожитие, от контрольных значений не отличались.</p></sec><sec><title>Обсуждение</title><p>Обсуждение. Результаты проведённого исследования позволяют полагать, что длительное воздействие выделяющихся при лесном пожаре продуктов горения негативно сказывается на репродуктивную функцию лабораторных крыс-самцов, обследованных сразу после окончания экспозиции. После протекания стандартного цикла сперматогенеза показатели, характеризующие развитие сперматозоидов и генерации мужских половых гормонов, восстанавливаются до нормальных, что говорит о высокой пластичности мужской репродуктивной системы в ответ на действие неблагоприятного экологического фактора – дыма лесных пожаров.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. At present, considering active participation of people in the elimination of wildfires, the study of the effects of smoke on the reproductive system is an urgent scientific problem.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Sexually mature outbred male rats were exposed to a daily four-hour inhalation exposure to smoke for one month. Immediately after the end of the exposure, some of the animals were removed from the experiment, and some were left to survive for two months. The study on testicular samples 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 effect of forest fire smoke on the reproductive system of model animals (outbred laboratory rats, males) was characterized by a decrease in the spermatogenesis index with a simultaneous decrease in the percentage of spermatogonia and the number of Leydig interstitial cells. The indices of the reproductive system of animals left for survival did not differ from the control values.</p></sec><sec><title>Discussion</title><p>Discussion. The results of this study suggest that prolonged exposure to combustion products released during a forest fire negatively affects the reproductive function of male laboratory rats examined immediately after the end of the exposure. After the course of the standard cycle of spertatogenesis, the indicators characterizing the development of sperm and the generation of male sex hormones are restored to normal, which indicates a high plasticity of the male reproductive system in response to the adverse environmental factor – smoke of forest fires.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пожар</kwd><kwd>дым</kwd><kwd>крысы</kwd><kwd>репродуктивная система</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fire</kwd><kwd>smoke</kwd><kwd>rats</kwd><kwd>reproductive system</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">ТАСС. Российское информационное агентство. Рослесхоз оценил площадь сгоревших лесов в 2019 году. URL: https://tass.ru/obschestvo/6924964 [дата доступа: 18.11.2020].</mixed-citation><mixed-citation xml:lang="en">TASS. Russian News Agency. 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