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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 pub-id-type="doi">10.36946/0869-7922-2016-4-45-48</article-id><article-id custom-type="elpub" pub-id-type="custom">toxreview-36</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>Drosophila melanogaster КАК МОДЕЛЬНЫЙ ОБЪЕКТ ПРИ ИЗУЧЕНИИ БИОЛОГИЧЕСКОГО ЭФФЕКТА МЕТОТРЕКСАТА (METHOTREXATE)</article-title><trans-title-group xml:lang="en"><trans-title>THE INVESTIGATION OF METHOTREXATE BIOLOGICAL EFFECTS ON EXAMPLE OF DROSOPHILA MELANOGASTER</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>Антосюк</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Antosyuk</surname><given-names>O. 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"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марвин</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Marvin</surname><given-names>A. 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>ФГАОУ ВПО УрФУ имени первого президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the first President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2016</year></pub-date><volume>0</volume><issue>4</issue><fpage>45</fpage><lpage>48</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Антосюк О.Н., Марвин А.М., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Антосюк О.Н., Марвин А.М.</copyright-holder><copyright-holder xml:lang="en">Antosyuk O.N., Marvin 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://www.toxreview.ru/jour/article/view/36">https://www.toxreview.ru/jour/article/view/36</self-uri><abstract><p>Метотрексат используется активно в медицинской практике, в частности при химиотерапии. Являясь ингибитором дигидрофолатредуктазы, влечет за собой 1 и 2-цепочечные разрывы ДНК, неправильное метилирование. Использовались 3 линии дикого типа Drosophila melanogaster. В качестве фактора химического стресса использовался метотрексат (400 μг/кг среды). Длительная селекция привела к изменению локализации и площади очагов апоптоза в крыловом имагинальном диске в присутствие метотрексата. Вероятно, различия в чувствительности линий связаны с различной активностью компартментов в крыловом имагинальном диске, а также различным количеством копий hobo-элемента.</p></abstract><trans-abstract xml:lang="en"><p>Results of investigations into some immunobiochemical indices in crucian carp at a chronic exposure to sublethal concentrations of copper ions are reported. Anti- microbial properties in the blood serum and a share of immunodeficient fishes were studied; in liver a content of nonspecific immune complexes, level of common lipids, content of lipid peroxidation products and antioxidant activity were investigated. The dependency of values of indices under consideration on how long fishes stayed under experimental conditions was shown.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метотрексат</kwd><kwd>hobo</kwd><kwd>мофометрический анализ</kwd><kwd>дигидрофолатредуктаза</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fish</kwd><kwd>copper ions</kwd><kwd>humoral immunity</kwd><kwd>lipids</kwd><kwd>pro-and anti -oxidant 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">Abazykin G., Kondrashov A.S. Major role of positive selection in the evolution of conservative segments of Drosophila proteins. 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