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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">zdor</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы здоровья и экологии</journal-title><trans-title-group xml:lang="en"><trans-title>Health and Ecology Issues</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-0967</issn><issn pub-type="epub">2708-6011</issn><publisher><publisher-name>Gomel State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51523/2708-6011.2024-21-1-09</article-id><article-id custom-type="elpub" pub-id-type="custom">zdor-2698</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>ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА И БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL MEDICINE AND BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Значение световой хронодеструкции в развитии эмбриотоксического эффекта в эксперименте</article-title><trans-title-group xml:lang="en"><trans-title>The significance of light chronodestruction in the development of the embryotoxic effect in the experiment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5473-4240</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашинская</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashinskaya</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатерина Сергеевна Пашинская, к. б. н., доцент, начальник центра</p><p>научно-образовательный центр «Центр молекулярно-генетических и биотехнологических исследований»</p><p>Витебск</p></bio><bio xml:lang="en"><p>Ekaterina S. Pashinskaya, Candidate of Biological Sciences, Associate Professor, Head of the Center</p><p>Scientific and Educational Center for Molecular Genetic and Biotechnological Research</p><p>Vitebsk</p></bio><email xlink:type="simple">paschinskaya.cat@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/0000-0001-8300-7547</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соболевская</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sobolevskaya</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Сергеевна Соболевская, к. б. н., доцент, доцент кафедры</p><p>кафедра гистологии, цитологии и эмбриологии</p><p>Витебск</p></bio><bio xml:lang="en"><p>Irina S. Sobolevskaya, Irina S. Sobolevskaya, Candidate of Biological Sciences,Associate Professor, Associate Professor of the Department</p><p>Department of Histology, Cytology and Embryology</p><p>Vitebsk</p></bio><email xlink:type="simple">irinabelikovavgmu@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/0009-0001-7397-7993</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашинская</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashinskaya</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Кирилловна Пашинская, лаборант</p><p>научно-образовательный центра «Центр молекулярно-генетических и биотехнологических исследований»</p><p>Витебск</p></bio><bio xml:lang="en"><p>Anastasia K. Pashinskaya, Laboratory Assistant</p><p>Scientific and Educational Center for Molecular Genetic and Biotechnological Research</p><p>Vitebsk</p></bio><email xlink:type="simple">anastasiaanockina5@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5088-4268</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Игнатьева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ignateva</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Викторовна Игнатьева,  к. с-х. н., доцент</p><p>кафедра фармакогнозии и ботаники</p><p>Витебск</p></bio><bio xml:lang="en"><p>Irina V. Ignateva, f Agricultural Sciences, Associate Professor</p><p>Department of Pharmacognosy and Botany</p><p>Vitebsk</p></bio><email xlink:type="simple">irinaignateva.78@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/0000-0002-3508-9995</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Побяржин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pobyarzhin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Войтехович Побяржин, к. б. н., доцент, декан</p><p>факультет подготовки иностранных граждан</p><p>Витебск</p></bio><bio xml:lang="en"><p>Vyacheslav V. Pobyarzhin, Candidate of Biological Sciences, Dean</p><p>Faculty of Training of Foreign Citizens</p><p>Vitebsk</p></bio><email xlink:type="simple">tulovo22@rambler.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/0009-0007-6391-1740</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соболевский</surname><given-names>С. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Sobolevsky</surname><given-names>S. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Леонидович Соболевский, ассистент</p><p>кафедра госпитальной хирургии с курсом ФПКиПК</p><p>Витебск</p></bio><bio xml:lang="en"><p>Sergey L. Sobolevsky, Assistant</p><p>Department of Hospital Surgery with the course of Advanced Training andRetraining</p><p>Vitebsk</p></bio><email xlink:type="simple">serg14071986@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/0009-0006-7489-7406</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чичерова</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chicherova</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кристина Александровна Чичерова, студент 2-го курса</p><p>лечебный факультет</p><p>Витебск</p></bio><bio xml:lang="en"><p>Kristina A. Chicherova, 2nd year student</p><p>Faculty of Medicine</p><p>Vitebsk</p></bio><email xlink:type="simple">cicerovakristina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Витебский государственный ордена Дружбы народов медицинский университет</institution></aff><aff xml:lang="en"><institution>Vitebsk Peoples Friendship State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>31</day><month>03</month><year>2024</year></pub-date><volume>21</volume><issue>1</issue><fpage>75</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Пашинская Е.С., Соболевская И.С., Пашинская А.К., Игнатьева И.В., Побяржин В.В., Соболевский С.Л., Чичерова К.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Пашинская Е.С., Соболевская И.С., Пашинская А.К., Игнатьева И.В., Побяржин В.В., Соболевский С.Л., Чичерова К.А.</copyright-holder><copyright-holder xml:lang="en">Pashinskaya E.S., Sobolevskaya I.S., Pashinskaya A.K., Ignateva I.V., Pobyarzhin V.V., Sobolevsky S.L., Chicherova K.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://journal.gsmu.by/jour/article/view/2698">https://journal.gsmu.by/jour/article/view/2698</self-uri><abstract><sec><title>   Цель исследования</title><p>   Цель исследования. Оценить значение световой хронодеструкции в развитии эмбриотоксического эффекта в эксперименте.</p></sec><sec><title>   Материалы и методы</title><p>   Материалы и методы. Эксперимент проведен на 60 крысах-самках линии Wistar. Для оценки значения хронодеструкции в развитии эмбриотоксического эффекта в эксперименте выделяли матку, в которой оценивали количество мест имплантации, общее количество эмбрионов, количество живых и погибших эмбрионов, количество резорбций. Оценивали количество желтых тел в собранных яичниках. Кроме того, регистрировали средний вес эмбриона (г) и средний краниокаудальный размер (мм). Показатели эмбриотоксического действия световой депривации определяли по пред- и постимплантационной гибели, которую рассчитывали в соответствии с методическими рекомендациями.</p></sec><sec><title>   Результаты</title><p>   Результаты. Воздействие световой депривации значимо уменьшает количество мест имплантации на 7, 14 и 21-е сутки в 1,5–1,8 раза, общее количество эмбрионов — в 1,6–1,8 раза, количество живых эмбрионов — в 2,2–9 раз и увеличивает количество погибших эмбрионов на 14-е и 21-е сутки в 4–5,5 раза, количество резорбций — в 1,6–11 раз. Средний краниокаудальный размер (мм) эмбрионов у экспериментальных животных был ниже контрольных значений в 1,5, 1,3 и 3,7 раза на 7, 14 и 21-е сутки соответственно. У самок, подвергшихся световой депривации, отмечено значимое увеличение предимплантационной смертности в 35–41,8 раза и постимплантационной смертности — в 7,2–20,4 раза по сравнению с контролем.</p></sec><sec><title>   Заключение</title><p>   Заключение. Световая депривация может оказывать негативное влияние на течение беременности и развитие плода у самок крыс, что подтверждается увеличением пред- и постимплантационной смертности.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Objective</title><p>   Objective. To assess the significance of light chronodestruction in the development of the embryotoxic effect in the experiment.</p></sec><sec><title>   Materials and methods</title><p>   Materials and methods. The experiment was conducted on 60 female rats of the Wistar line. To assess the significance of chronodestruction in the development of embryotoxic effect, the uterus was isolated in the experiment, in which the number of implantation sites, the total number of embryos, the number of live and dead embryos, and the number of resorptions were estimated. The number of corpus luteum in the harvested ovaries was estimated. In addition, the mean embryo weight (g) and mean craniocaudal size (mm) were recorded. Indicators of embryotoxic effects of light deprivation were determined by pre- and post-implantation death, which was calculated in accordance with methodological recommendations.</p></sec><sec><title>   Results</title><p>   Results. Exposure to light deprivation reduces the number of implantation sites as of 7th, 14th and 21st days by 1,5-1,8 times, the total number of embryos by 1,6-1,8 times, the number of living embryos by 2,2-9 times and increases the number of dead embryos as of 14th and 21st days by 4-5,5 times, the number of resorptions – 1,6-11 times. The average craniocaudal size (mm) of embryos in experimental animals was recorded below control values by 1,5 times, 1,3 and 3,7 times by 7th, 14th, 21st days respectively. In females exposed to light deprivation, there was a significant increase in pre-implantation mortality by 35-41,8 times and post-implantation mortality by 7,2-20,4 times compared to the control.</p></sec><sec><title>   Conclusion</title><p>   Conclusion. Light deprivation may have a negative effect on pregnancy and fetal development in female rats, which is confirmed by an increase in pre- and post-implantation mortality.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>световая депривация</kwd><kwd>самки крыс линии Wistar</kwd><kwd>эмбриотоксический эффект</kwd></kwd-group><kwd-group xml:lang="en"><kwd>light deprivation</kwd><kwd>female Wistar rats</kwd><kwd>embryotoxic effects</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках научно-исследовательской работы научно-образовательного центра «Центр молекулярно-генетических и биотехнологических исследований» ВГМУ</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the research of the scientific and educational center «Center for Molecular Genetic and Biotechnological Research» of VSMU</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">Liu J, Clough S, Hutchinson A, Adamah-Biassi E, Popovska-Gorevski M, Dubocovich M. 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