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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">anatomy</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал анатомии и гистопатологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Anatomy and Histopathology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2225-7357</issn><publisher><publisher-name>N.N. Burdenko Voronezh State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18499/2225-7357-2020-9-2-35-39</article-id><article-id custom-type="elpub" pub-id-type="custom">anatomy-1114</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 PAPERS</subject></subj-group></article-categories><title-group><article-title>Показатели выживаемости и клинической эффективности витрифицированных бластоцист человека в практике эмбриологических лабораторий</article-title><trans-title-group xml:lang="en"><trans-title>Survival Rates and Clinical Effectiveness of Vitrified Human Blastocysts in the Practice of Embryological Laboratories</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>Иванова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">pathologywinkie@gmail.com</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>Шурыгина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shurygina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петрова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юхимец</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Yukhimets</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулакова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulakova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Русаков</surname><given-names>Д. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Rusakov</surname><given-names>D. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демидова</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidova</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самара</p></bio><bio xml:lang="en"><p>Samara</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО «Самарский государственный медицинский университет» Минздрава России<country>Россия</country></aff><aff xml:lang="en">Samara State Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">ФГБОУ ВО «Самарский государственный медицинский университет» Минздрава России,&#13;
ЗАО «Медицинская компания ИДК»<country>Россия</country></aff><aff xml:lang="en">Samara State Medical University, &#13;
Medical company IDK<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">ЗАО «Медицинская компания ИДК»<country>Россия</country></aff><aff xml:lang="en">Medical company IDK<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">ЧУОО ВО «Медицинский университет Реавиз»<country>Россия</country></aff><aff xml:lang="en">Medical University Reaviz<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>29</day><month>06</month><year>2020</year></pub-date><volume>9</volume><issue>2</issue><fpage>35</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванова О.В., Шурыгина О.В., Петрова А.А., Юхимец С.Н., Кулакова О.В., Русаков Д.Ю., Демидова Н.Н., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Иванова О.В., Шурыгина О.В., Петрова А.А., Юхимец С.Н., Кулакова О.В., Русаков Д.Ю., Демидова Н.Н.</copyright-holder><copyright-holder xml:lang="en">Ivanova O.V., Shurygina O.V., Petrova A.A., Yukhimets S.N., Kulakova O.V., Rusakov D.Y., Demidova N.N.</copyright-holder><license 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://anatomy.elpub.ru/jour/article/view/1114">https://anatomy.elpub.ru/jour/article/view/1114</self-uri><abstract><p>Цель – провести сравнительный анализ выживаемости эмбрионов и частоты наступления беременности после витрификации эмбрионов человека на разных стадиях преимплантационного развития.</p><sec><title>Материал и методы</title><p>Материал и методы. Было проанализировано 1311 эмбрионов. Для витрификации эмбрионов были использованы среды Irvine Scientific (США), носители открытого типа CryoTop (Япония). Витрификация и размораживание эмбрионов осуществлялись в соответствии с рекомендациями производителя. Статистическую обработку результатов выполняли на компьютере в среде статистических вычислений R (R v.3.5.3, RStudio v.1.1.463), первичный ввод данных проводили с помощью электронных таблиц MS Excel. В работе использовали методы описательной статистики, тесты для сравнения пропорций, в том числе точный биноминальный для малых выборок и одновыборочный тест пропорций с коррекцией непрерывности для больших выборок.</p></sec><sec><title>Результаты</title><p>Результаты. Диапазон выживаемости эмбрионов достаточно широкий и составляет от 75 до 100%. При проведении детального анализа зависимости частоты наступления беременности от стадии замороженной бластоцисты, мы выявили прямую связь клинических показателей и структуры эмбрионов 5–6-х суток преимплантационного развития. Бластоцисты с наиболее высокой степенью сформированности внутренней клеточной массы и трофобласта в сочетании с высокой степенью экспансии дают наиболее высокие результаты частоты наступления клинической беременности.</p></sec><sec><title>Выводы</title><p>Выводы. При проведении витрификации стадия развития бластоцисты влияет на их выживаемость и показатели частоты наступления беременности. Явление хетчинга у эмбрионов 5–6-х суток  преимплантационного развития следует расценивать как фактор, понижающий успех витрификации.</p></sec></abstract><trans-abstract xml:lang="en"><p>Objective – to carry out comparative analysis of embryo survival and pregnancy rate after the vitrification of human embryos at different stages of the preimplantation development.</p><sec><title>Material and methods</title><p>Material and methods. A total of 1311 embryos were analyzed. For vitrification of embryos, the Irvine Scientific media (USA) and the CryoTop open-type carriers (Japan) were used. The vitrification and the defrosting of embryos were carried out according to the manufacturer's recommendations. The statistical processing of the results was performed on a computer in the statistical computing environment R (R V. 3. 5. 3, RStudio V. 1. 1. 463), the primary data entry was performed using MS Excel spreadsheets. We used methods of descriptive statistics, tests for comparing proportions, including an accurate binomial test for small samples and a single-sample test of proportions with continuity correction for large samples.</p></sec><sec><title>Results</title><p>Results. The range of the embryo survival is quite wide and ranges from 75% to 100%. When conducting a detailed analysis of the dependence of the pregnancy rate on the stage of cryopreserved blastocysts, we found a direct link between the clinical indicators and the structure of the embryos of 5–6 days of the preimplantation development. The blastocysts with the highest degree of the internal cell mass and the trophoblast formation in combination with a high degree of the expansion (4) give the best results of the clinical pregnancy rate.</p></sec><sec><title>Conclusions</title><p>Conclusions. When performing vitrification we found out that the stage of the blastocyst development influences their survival and pregnancy rates. The phenomenon of hatching in the embryos of 5–6-day preimplantation development should be regarded as a factor that reduces the success of vitrification. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>криоконсервация</kwd><kwd>бластоциста</kwd><kwd>трофобласт</kwd><kwd>витрификация</kwd><kwd>частота наступления беременности</kwd><kwd>человек</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cryopreservation</kwd><kwd>blastocyst</kwd><kwd>trophoblast</kwd><kwd>vitrification</kwd><kwd>pregnancy rate</kwd><kwd>human</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">Иванова О.В., Шурыгина О.В., Русаков Д.Ю., Быкова Т.В., Петрова А.А., Юхимец С.Н., Кулакова О.В., Юлдашева С.З. Оценка эффективности криоконсервации гамет и эмбрионов человека в программах вспомогательных репродуктивных технологий. 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