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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Obstetrics and Gynecology</journal-id><journal-title-group><journal-title xml:lang="en">Obstetrics and Gynecology</journal-title><trans-title-group xml:lang="ru"><trans-title>Акушерство и гинекология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0300-9092</issn><issn publication-format="electronic">2412-5679</issn><publisher><publisher-name xml:lang="en">Bionika Media</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">247555</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">ABNORMAL HYPERMETHYLATION OF HOXA10 AND HOXA11 GENES IN CHRONIC ENDOMETRITIS-RELATED INFERTILITY</article-title><trans-title-group xml:lang="ru"><trans-title>АНОМАЛЬНОЕ ГИПЕРМЕТИЛИРОВАНИЕ ГЕНОВ HOXA10 И HOXA11 ПРИ БЕСПЛОДИИ, АССОЦИИРОВАННОМ С ХРОНИЧЕСКИМ ЭНДОМЕТРИТОМ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sukhikh</surname><given-names>Gennady T.</given-names></name><name xml:lang="ru"><surname>Сухих</surname><given-names>Геннадий Тихонович</given-names></name></name-alternatives><bio xml:lang="en"><p>MD, professor, academician of the RAS, Director</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, академик РАН, директор</p></bio><email>g_sukhikh@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Osipyants</surname><given-names>Andrew I.</given-names></name><name xml:lang="ru"><surname>Осипьянц</surname><given-names>Андрей Игоревич</given-names></name></name-alternatives><bio xml:lang="en"><p>researcher at the Laboratory of biochemistry and enzymology</p></bio><bio xml:lang="ru"><p>научный сотрудник лаборатории биохимии и энзимологии</p></bio><email>osssip@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Maltseva</surname><given-names>Larisa Ivanovna</given-names></name><name xml:lang="ru"><surname>Мальцева</surname><given-names>Лариса Ивановна</given-names></name></name-alternatives><bio xml:lang="en"><p>MD, Professor, Head of the Department of Obstetrics and Gynecology</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, зав. кафедрой акушерства и гинекологии</p></bio><email>laramalc@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Smolina</surname><given-names>Gulnara R.</given-names></name><name xml:lang="ru"><surname>Смолина</surname><given-names>Гульнара Рафаиловна</given-names></name></name-alternatives><bio xml:lang="en"><p>Competitor of the Department of Obstetrics and Gynecology</p></bio><bio xml:lang="ru"><p>соискатель кафедры акушерства и гинекологии</p></bio><email>smolinagulnara@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Poloznikov</surname><given-names>Andrey Aleksandrovich</given-names></name><name xml:lang="ru"><surname>Полозников</surname><given-names>Андрей Александрович</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD, Head. Laboratory of biochemistry and enzymology</p></bio><bio xml:lang="ru"><p>к.х.н., зав. лабораторией биохимии и энзимологии</p></bio><email>andrey.poloznikov@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Muyzhnek</surname><given-names>Ekaterina Leonidovna</given-names></name><name xml:lang="ru"><surname>Муйжнек</surname><given-names>Екатерина Леонидовна</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD, Scientific Director</p></bio><bio xml:lang="ru"><p>к.б.н., директор по науке</p></bio><email>MuyzhnekEL@ilmixgroup.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kiselev</surname><given-names>Vsevolod I.</given-names></name><name xml:lang="ru"><surname>Киселев</surname><given-names>Всеволод Иванович</given-names></name></name-alternatives><bio xml:lang="en"><p>Ph.D., professor, corresponding member, RAS, deputy director</p></bio><bio xml:lang="ru"><p>д.б.н., профессор, член-корр. РАН, зам. директора Института медико-биологических проблем</p></bio><email>vkis10@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ Научный центр акушерства, гинекологии перинатологии им. академика В.И. Кулакова Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Dmitry Rogachev Federal Research-and-Clinical Center for Pediatric Hematology, Oncology, and Immunology</institution></aff><aff><institution xml:lang="ru">Федеральный научно-клинический центр детской гематологии, онкологии и иммунологии им. Д. Рогачева</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Kazan State Medical Academy, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ГОУ ДПО Казанская государственная медицинская академия Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">MiraxBioPharma</institution></aff><aff><institution xml:lang="ru">ЗАО «МираксБиоФарма»</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Institute of Biomedical Problems, Peoples' Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ ВПО Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2015</year></pub-date><issue>12</issue><issue-title xml:lang="en">NO12 (2015)</issue-title><issue-title xml:lang="ru">№12 (2015)</issue-title><fpage>69</fpage><lpage>74</lpage><history><date date-type="received" iso-8601-date="2023-02-18"><day>18</day><month>02</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2015, Bionika Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, ООО «Бионика Медиа»</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Bionika Media</copyright-holder><copyright-holder xml:lang="ru">ООО «Бионика Медиа»</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0300-9092/article/view/247555">https://journals.eco-vector.com/0300-9092/article/view/247555</self-uri><abstract xml:lang="en"><p>The HOXA10 and HOXA11 genes and their encoded protein products are now considered to be one of the key regulators of endometrial receptivity during embryo implantation, which determine fertility as a whole. It is known that patients with endometriosis-related infertility exhibit lower levels of HOXA and HOXA11 proteins in endometrial tissue because of hypermethylation within the promoter regions encoding these protein genes. Objective. To investigate the methylation in the promoter regions of the HOXA10 and HIXA11 genes in the endometrium of reproductive-aged women with infertility in the presence of chronic endometritis. Subject and methods. The bisulfite sequencing method was used to study the level of promoter methylation of the HOXA10 and HOXA11 genes in 25 eutopic endometrial biopsy specimens obtained from reproductive-aged women with infertility in the presence of chronic endometritis. Results. It was established that hypermethylation of the HOXA11 and HOXA10 genes was observed in 64 and 84% of the biopsy specimens, respectively. At the same time, promoter methylation of the HOXA10 gene correlated with the duration of infertility. Conclusion. The findings agree well with the data previously obtained by other authors and allow the methylation of the HOXA10 and HOXA11 genes to be considered as a potential molecular marker for infertility associated with gynecological diseases.</p></abstract><trans-abstract xml:lang="ru"><p>Гены HOXA10 и HOXA11 и кодируемые ими белковые продукты в настоящее время рассматриваются как одни из ключевых регуляторов рецептивности эндометрия при имплантации эмбриона, определяющих фертильность в целом. Известно, что в ткани эндометрия у пациенток, страдающих бесплодием, ассоциированным с эндометриозом, снижен уровень белков HOXА10 и HOXА11 по причине гиперметилирования промоторных участков кодирующих эти белки генов. Цель исследования. Исследовать статус метилирования промоторных участков генов HOXA10 и HOXA11 в эндометрии у женщин репродуктивного возраста, страдающих бесплодием на фоне хронического эндометрита. Материал и методы. Методом бисульфитного секвенирования был исследован уровень промоторного метилирования генов HOXA10 и HOXA11 в 25 биоптатах эутопического эндометрия, полученных у женщин репродуктивного возраста, страдающих бесплодием на фоне хронического эндометрита. Результаты. Установлено, что гиперметилирование гена HOXA11 наблюдалось в 64%, а гена HOXA10- в 84% биоптатов. При этом уровень промоторного метилирования гена HOXA10 коррелировал с длительностью периода бесплодия. Заключение. Полученные результаты согласуются с ранее полученными данными других авторов и позволяют рассматривать статус метилирования генов HOXA10 и HOXA11 как потенциальный молекулярный маркер бесплодия, ассоциированного с гинекологическими заболеваниями.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chronic endometritis</kwd><kwd>DNA methylation</kwd><kwd>epigenetic modification</kwd><kwd>infertility</kwd><kwd>bisulfite sequencing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хронический эндометрит</kwd><kwd>метилирование ДНК</kwd><kwd>эпигенетическая модификация</kwd><kwd>бесплодие</kwd><kwd>бисульфитное секвенирование</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Сухих Г.Т., Шуршалина А.В. Хронический эндометрит. М.: ГЭОТЛР-Медиа; 2013; 64с.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Cicinelli E., De Ziegler D., Nicoletti R., Colafiglio G., Saliani N., Resta L. et al. 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