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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2018.03.8-12</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-400</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Индекс метилирования импринтированных генов GRB10 и GNAS при нарушениях эмбрионального развития человека</article-title><trans-title-group xml:lang="en"><trans-title>Methylation index of imprinted genes GRB10 and GNAS in abnormal human embryo development</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>Саженова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sazhenova</surname><given-names>E. A.</given-names></name></name-alternatives><email xlink:type="simple">elena.sazhenova@mail.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>Никитина</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitina</surname><given-names>T. V.</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>Марков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Markov</surname><given-names>A. V.</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>Скрябин</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Skryabin</surname><given-names>N. A.</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>Васильев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilyev</surname><given-names>S. A.</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>Толмачева</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolmacheva</surname><given-names>E. 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>Назаренко</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nazarenko</surname><given-names>M. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лебедев</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedev</surname><given-names>I. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт медицинской генетики, Томский национальный исследовательский медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Medical Genetics, Tomsk National Research Medical Center of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-исследовательский институт медицинской генетики, Томский национальный исследовательский медицинский центр Российской академии наук; ФГБОУ ВО «Сибирский государственный медицинский университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Medical Genetics, Tomsk National Research Medical Center of Russian Academy of Sciences; Siberian State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>03</day><month>04</month><year>2018</year></pub-date><volume>17</volume><issue>3</issue><fpage>8</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Саженова Е.А., Никитина Т.В., Марков А.В., Скрябин Н.А., Васильев С.А., Толмачева Е.Н., Назаренко М.С., Лебедев И.Н., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Саженова Е.А., Никитина Т.В., Марков А.В., Скрябин Н.А., Васильев С.А., Толмачева Е.Н., Назаренко М.С., Лебедев И.Н.</copyright-holder><copyright-holder xml:lang="en">Sazhenova E.A., Nikitina T.V., Markov A.V., Skryabin N.A., Vasilyev S.A., Tolmacheva E.N., Nazarenko M.S., Lebedev I.N.</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.medgen-journal.ru/jour/article/view/400">https://www.medgen-journal.ru/jour/article/view/400</self-uri><abstract><p>В настоящем исследовании в группе спонтанных абортусов I триместра беременности с нормальным кариотипом проведён анализ индекса метилирования импринтированных генов GNAS ( NESP55 ) и GRB10 . Исследование выполнено с использованием образцов экстраэмбриональной мезодермы 47 спонтанных абортусов и 45 индуцированных абортусов, составивших контрольную группу. Показано статистически значимое увеличение индекса метилирования импринтированного гена NESP55 и снижение индекса метилирования гена GRB10 у спонтанных абортусов. Исходя из функции исследуемых импринтированных генов можно предположить, что увеличение индекса метилирования гена NESP55 и его снижение в GRB10 могли усиливать подавление роста эмбриона и привести к остановке его развития.</p></abstract><trans-abstract xml:lang="en"><p>Present study analyzes the methylation index of the imprinted genes GNAS ( NESP55 ) and GRB10 in the group of first trimester spontaneous abortions with normal karyotype. The DNA samples derived from extraembryonic mesoderm of 47 spontaneous abortions and 45 induced abortions were examined. A significant increase in the methylation index of the imprinted gene NESP55 and a decrease in GRB10 in the spontaneous abortions were observed. Based on the function of this imprinted genes, it can be assumed that an increase in the methylation index of the NESP55 gene and its decrease in GRB10 could enhance the suppression of embryo growth and lead to a possible disturbance of embryo development.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>геномный импринтинг</kwd><kwd>GRB10</kwd><kwd>NESP55</kwd><kwd>индекс метилирования</kwd><kwd>невынашивание беременности</kwd><kwd>спонтанные абортусы</kwd><kwd>эпимутации</kwd><kwd>genomic imprinting</kwd><kwd>GRB10</kwd><kwd>NESP55</kwd><kwd>methylation index</kwd><kwd>pregnancy loss</kwd><kwd>spontaneous abortion</kwd><kwd>epimutations</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">Радзинский ВЕ. 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