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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">toxreview</journal-id><journal-title-group><journal-title xml:lang="ru">Токсикологический вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Toxicological Review</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-7922</issn><issn pub-type="epub">3034-4611</issn><publisher><publisher-name>Federal Scientific Center of Hygiene named after F.F. Erisman</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">toxreview-523</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></article-categories><title-group><article-title>СИНТЕЗ ДНК В ЛИМФОЦИТАХ ПЕРИФЕРИЧЕСКОЙ КРОВИ ОВЕЦ ПРИ ХРОНИЧЕСКОМ ПОСТУПЛЕНИИ СВИНЦА С РАЦИОНОМ</article-title><trans-title-group xml:lang="en"><trans-title>SYNTHESIS OF DNA IN PERIPHERAL BLOOD LYMPHOCYTES IN SHEEP AT DIETARY CHRONIC INTAKE OF LEAD</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мирзоев</surname><given-names>Эльдениз Балабек оглы</given-names></name><name name-style="western" xml:lang="en"><surname>Mirzoev</surname><given-names>Eldeniz Balabek ogly</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.б.н., вед. н. с. лаборатории радиобиологии и экотоксикологии сельскохозяйственных животных ФГБНУ ВНИИРАЭ, 249032, г. Обнинск, Калужской обл., Российская Федерация</p><p>e-mail: mirzoev.ed@yandex.ru</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кобялко</surname><given-names>Владимир Олегович</given-names></name><name name-style="western" xml:lang="en"><surname>Kobyalko</surname><given-names>Vladimir Olegovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.б.н., зав. лабораторией радиобиологии и экотоксикологии сельскохозяйственных животных ФГБНУ ВНИИРАЭ, 249032, г. Обнинск, Калужской обл., Российская Федерация</p><p>e-mail: kobyalko@yandex.ru</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полякова</surname><given-names>Ирина Владимировна</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakova</surname><given-names>Irina Vladimirovna</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл.н.с. лаборатории радиобиологии и экотоксикологии сельскохозяйственных животных ФГБНУ ВНИИРАЭ, 249032, г. Обнинск, Калужской обл., Российская Федерация</p><p>e-mail: irinaamchenkina@mail.ru</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Губина</surname><given-names>Ольга Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Gubina</surname><given-names>Olga Aleksandrovna</given-names></name></name-alternatives><bio xml:lang="ru"><p>Н.с. лаборатории радиобиологии и экотоксикологии сельскохозяйственных животных ФГБНУ ВНИИРАЭ, 249032, г. Обнинск, Калужской обл., Российская Федерация</p><p>e-mail: Olgubina@yandex.ru</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фролова</surname><given-names>Наталья Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Frolova</surname><given-names>Natalya Aleksandrovna</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.б.н., н.с. лаборатории радиобиологии и экотоксикологии сельскохозяйственных животных ФГБНУ ВНИИРАЭ, 249032, г. Обнинск, Калужской обл., Российская Федерация</p><p>e-mail: nafc@yandex.ru</p></bio><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 «Всероссийский научноисследовательский институт радиологии и агроэкологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«All-Russian Institute of Agricultural Radiology and Agroecology»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>04</day><month>10</month><year>2021</year></pub-date><volume>0</volume><issue>6</issue><fpage>32</fpage><lpage>36</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мирзоев Э.Б., Кобялко В.О., Полякова И.В., Губина О.А., Фролова Н.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Мирзоев Э.Б., Кобялко В.О., Полякова И.В., Губина О.А., Фролова Н.А.</copyright-holder><copyright-holder xml:lang="en">Mirzoev E.B., Kobyalko V.O., Polyakova I.V., Gubina O.A., Frolova N.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.toxreview.ru/jour/article/view/523">https://www.toxreview.ru/jour/article/view/523</self-uri><abstract><p>Исследования были проведены на 12 овцах романовской породы, живой массой 33,0±1,1 кг, в возрасте 1-1,5 года. Животные были разделены на 4 группы по 3 особи в каждой: 1 группа – контроль. 2, 3 и 4 группы ежедневно в течение 90 суток исследования с рационом получали нитрат свинца в концентрациях 5, 25 и 150 мг/кг корма. С учетом рациона (2 кг корма) суточное поступление металла в среднем составило 10, 50 и 300 мг, соответственно. В лимфоцитах периферической крови определяли общий и репаративный синтез ДНК. Образцы крови отбирали из яремной вены до кормления на 7-е, 14-е, 28-е, 42-е, 56-е, 70-е и 90-е сутки интоксикации. Хроническое поступление свинца с рационом в организм овец характеризуется изменением общего и репаративного синтеза ДНК в лимфоцитах периферической крови. При низких уровнях свинца в рационе (5 мг/кг) в зависимости от срока исследования отмечали активацию или ингибирование синтетических и репарационных процессов. С увеличением концентрации металла в рационе (25 и 150 мг/кг) в лимфоцитах периферической крови наблюдали усиление общего и репаративного синтеза ДНК. Наиболее выраженный характер изменений регистрировали у животных 4-й группы (150 мг/кг). Предполагается, что при хроническом воздействии свинца основной вклад в интенсивность общего синтеза ДНК в лимфоцитах периферической крови овец вносит активация репарационных процессов.</p></abstract><trans-abstract xml:lang="en"><p>Studies were conducted on 12 sheep of Romanov breed, 1-1.5 years old and weighing 33,0 ± 1.1 kg,. The animals were equally divided at random into 4 groups: group 1st received basic control diet (control group), 2nd, 3rd and 4th groups daily received feed with lead nitrate in concentrations of 5, 25 and 150 mg/kg during the 90 day experiment. With account of daily diet of 2 kg, a daily intake of metal was on average of 10, 50 and 300 mg respectively. A total and reparative DNA synthesis was determined in the peripheral blood lymphocytes. Blood samples were taken from the jugular vein before feeding on the 7th, 14th, 28th, 42nd, 56th, 70th and 90th days of investigation. The chronic lead intake with the diet in sheep was characterized by changes in the total and reparative DNA synthesis in peripheral blood lymphocytes. It was observed that the low level of lead in diet (5 mg/kg) activates or inhibits the synthesis and reparation processes depending on the date of the study. The activation of the total and reparative DNA synthesis in peripheral blood lymphocytes was observed with increase of the metal content in the diet (25 and 50 mg/kg). The most pronounced changes were registered in animals of the 4th group (150 mg/kg). It is supposed that the activation of the reparation process makes the main contribution to the intensity of the total DNA synthesis in peripheral blood lymphocytes at a chronic exposure to lead.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>овцы</kwd><kwd>лимфоциты</kwd><kwd>периферическая кровь</kwd><kwd>свинец</kwd><kwd>общий и репаративный синтез ДНК</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sheep</kwd><kwd>lymphocytes</kwd><kwd>peripheral blood</kwd><kwd>lead</kwd><kwd>total and reparative DNA synthesis</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">Мирзоев Э. Б., Кобялко В. О., Полякова И. В., Губина О. А., Фролова Н. А. 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