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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">biob</journal-id><journal-title-group><journal-title xml:lang="ru">Биобезопасность и Биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Biosafety and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2707-7241</issn><issn pub-type="epub">2957-5702</issn><publisher><publisher-name>Научно-исследовательский институт проблем биологической безопасности</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.58318/2957-5702-2023-14-27-34</article-id><article-id custom-type="elpub" pub-id-type="custom">biob-88</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>СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ СВИНЦА НА РАЗВИТИЕ ЭМБРИОНОВ И ЛИЧИНОК РЫБОК ДАНИО</article-title><trans-title-group xml:lang="en"><trans-title>THE EFFECT OF LEAD ON THE DEVELOPMENT OF EMBRYOS AND LARVAE OF DANIO RERIO</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6724-9810</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шалахметова</surname><given-names>Т. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Shalakhmetova</surname><given-names>T. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор биологических наук, профессор</p><p>Алматы</p></bio><bio xml:lang="en"><p>Doctor of Biological Sciences, Professor</p><p>Almaty</p></bio><email xlink:type="simple">t_Shalakhmetova@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/0000-0002-3268-7068</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тленшиева</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Tlenshieva</surname><given-names>Arshyn Muratkyzy</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат наук</p><p>Алматы</p></bio><bio xml:lang="en"><p>Almaty</p></bio><email xlink:type="simple">arshynmuratkyzy@gmail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казахский национальный университет имени Аль-Фараби<country>Казахстан</country></aff><aff xml:lang="en">Al-Farabi Kazakh National University<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>16</day><month>09</month><year>2024</year></pub-date><volume>0</volume><issue>14</issue><fpage>27</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шалахметова Т.М., Тленшиева А.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шалахметова Т.М., Тленшиева А.М.</copyright-holder><copyright-holder xml:lang="en">Shalakhmetova T.M., Tlenshieva A.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://journal.biosafety.kz/jour/article/view/88">https://journal.biosafety.kz/jour/article/view/88</self-uri><abstract><p>Ранние стадии развития водных организмов, включая рыб, по своей природе уязвимы к воздействию свинца (Pb) и других загрязняющих воду металлов. Однако сообщения о пагубном воздействии экологически значимых уровней Pb ограничены. С этой целью мы подвергали эмбрионы старых рыбок Данио рерио (Danio rerio) через 2,5 ч после оплодотворения (часа) воздействию ряда концентраций Pb, охватывающих экологически значимые уровни (10μM; 20μM; 40μM; 60μM), до 120ч. Воздействие негативно повлияло на развитие и выживаемость эмбрионов рыбок данио, вызвав смертность, связанную с коагуляцией эмбрионов, в зависимости от концентрации. При 24 hpf самый высокий уровень воздействия (60μM Pb) приводил к нарушению активности эмбрионов, характеризующемуся снижением активности всплесков и количества движений, совершаемых эмбрионами в минуту. При 72 hpf все эмрионы вылупились во всех концентрациях воздействий. Наблюдалось морфологические аномалии и повышение экспрессии мРНК. Эти результаты свидетельствуют о том, что содержание Pb в пределах экологически значимых уровней может быть вредным для развивающихся рыбок данио.</p></abstract><trans-abstract xml:lang="en"><p>The early stages of development of aquatic organisms, including fish, are inherently vulnerable to the effects of lead (Pb) and other water-polluting metals. However, reports of harmful effects of environmentally significant Pb levels are limited. To this end, we exposed the embryos of old Danio rerio fish 2.5 hours after fertilization (hours) to a range of Pb concentrations covering environmentally significant levels (10 μm; 20 μm; 40 μm; 60 μm), up to 120h. Exposure negatively affected the development and survival of the embryos of danio fish, causing mortality associated with embryo coagulation, depending on concentration. At 24 hpf, the highest level of exposure (60 μm Pb) led to impaired embryo activity, characterized by a decrease in burst activity and the number of movements performed by embryos per minute. At 72 hpf, all the embryos hatched in all exposure concentrations. Morphological abnormalities and an increase in mRNA expression were observed. These results indicate that the Pb content within ecologically significant levels may be harmful to developing danio fish.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>зебрафиш</kwd><kwd>свинец</kwd><kwd>тяжелый металл</kwd><kwd>эмбриология</kwd><kwd>ген экспрессия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>zebrafish</kwd><kwd>lead</kwd><kwd>heavy metal</kwd><kwd>embryology</kwd><kwd>gene expression</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">Chen J. 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