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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">medsovet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский Совет</journal-title><trans-title-group xml:lang="en"><trans-title>Meditsinskiy sovet = Medical Council</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-701X</issn><issn pub-type="epub">2658-5790</issn><publisher><publisher-name>REMEDIUM GROUP Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21518/2079-701X-2021-21-2-131-137</article-id><article-id custom-type="elpub" pub-id-type="custom">medsovet-6645</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>Акушерство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Obstetrics</subject></subj-group></article-categories><title-group><article-title>Оценка влияния уровня витамина D на течение беременности I триместра</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of the vitamin d levels effect on the course of the first trimester of pregnancy</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>Ковалева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalevа</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ковалева Ирина Владимировна - врач-гинеколог высшей категории.</p><p>197372, Санкт-Петербург, ул. Ильюшина, д. 4/1.</p></bio><bio xml:lang="en"><p>Irina V. Kovalevа - Gynecologist of the Highest Category, AVA-PETER Ltd.</p><p>4/1, Ilyushin St., St Petersburg, 197372.</p></bio><email xlink:type="simple">drkovaleva@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0103-8583</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баклейчева</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakleicheva</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баклейчева Маргарита Олеговна - младший научный сотрудник.</p><p>199034, Санкт-Петербург, Менделеевская линия, д. 3.</p></bio><bio xml:lang="en"><p>Margarita O. Bakleicheva - Junior Researcher, Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott.</p><p>3, Mendeleyevskaya Line, St Petersburg, 199034.</p></bio><email xlink:type="simple">bakleicheva@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6542-5953</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Беспалова</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bespalova</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Беспалова Олеся Николаевна – доктор медицинских наук, заместитель директора по научной работе.</p><p>199034, Санкт-Петербург, Менделеевская линия, д. 3.</p></bio><bio xml:lang="en"><p>Olesya N. Bespalova - Dr. Sci. (Med.), Deputy Director for Research, Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott.</p><p>3, Mendeleyevskaya Line, St Petersburg, 199034.</p></bio><email xlink:type="simple">shiggerra@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АВА-ПЕТЕР</institution><country>Россия</country></aff><aff xml:lang="en"><institution>AVA-PETER</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-исследовательский институт акушерства, гинекологии и репродуктологии имени Д.О. Отта</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>09</day><month>01</month><year>2022</year></pub-date><volume>0</volume><issue>21-2</issue><fpage>131</fpage><lpage>137</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ковалева И.В., Баклейчева М.О., Беспалова О.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ковалева И.В., Баклейчева М.О., Беспалова О.Н.</copyright-holder><copyright-holder xml:lang="en">Kovalevа I.V., Bakleicheva M.O., Bespalova O.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.med-sovet.pro/jour/article/view/6645">https://www.med-sovet.pro/jour/article/view/6645</self-uri><abstract><sec><title>Введение</title><p>Введение. Течение физиологической беременности обеспечивается множеством взаимодополняющих факторов. Так, недостаточность в одном из звеньев метаболической сети способствует развитию дисбаланса в работе всего организма, обеспечивающего рост и развитие эмбриона с первых дней гестации. Доказано, что витамин D может выступать в качестве иммунного регулятора во время имплантации, оказывая протективное действие при пролонгировании беременности.</p></sec><sec><title>Цель исследования</title><p>Цель исследования. Оценить особенности течения беременности у пациенток с различным уровнем витамина D в крови в I триместре.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Было проведено проспективное многоцентровое рандомизированное исследование в Северо-Западном регионе РФ среди 88 беременных I триместра гестации (до 13 нед.). Все пациентки были разделены на 3 группы в зависимости от уровня витамина D в плазме крови: 1-я группа – 14 беременных с дефицитом 25(ОН)D &lt; 10 нг/мл; 2-я группа – 62 пациентки от 10 до 30 нг/мл; 3-я группа – 12 беременных при содержании витамина D &gt; 30 нг/мл.</p></sec><sec><title>Результаты</title><p>Результаты. В 1-й группе у 86% пациенток с выраженным дефицитом витамина D диагностирован угрожающий выкидыш, что достоверно выше по сравнению с 3-й группой (85,7% и 33,3%, χ2 = 7,490, p = 0,007). При этом ретрохориальная гематома в 1-й группе встречалась в 3,5 раза чаще по сравнению с 3-й группой (57,1% и 16,67% соответственно, χ2 = 4,473, p = 0,035). В последующем каждая 4-я женщина из группы с дефицитом витамина D родила раньше положенного срока, чего не наблюдалось среди пациенток 3-й группы (25%, 0%, χ2 = 1,231, p = 0,268).</p></sec><sec><title>Выводы</title><p>Выводы. Назначение заместительной витаминотерапии холекальциферолом в составе комплексной сохраняющей терапии при угрожающем выкидыше с последующим контролем за его уровнем в крови и при отклонении от нормальных показателей способствует благоприятному течению беременности и улучшению перинатальных исходов.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The course of physiological pregnancy is provided by many complementary factors. Thus, a deficiency in one of the links of the metabolic network contributes to the development of an imbalance in the work of the whole organism, which ensures the growth and development of the embryo from the first days of gestation. It has been proven that vitamin D can act as an immune regulator during implantation, providing a protective effect in whole period of pregnancy.</p></sec><sec><title>Aim</title><p>Aim. The aim of this study is assessed the features of the course of pregnancy in patients with different levels of vitamin D in the blood in the first trimester.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A prospective multicenter randomized study was conducted in the North-West region of the Russian Federation among 88 pregnant women in the first trimester of gestation (up to 13 weeks). All patients were divided into 3 groups depending on the initial level of vitamin D (group 1–14 women with a 25(OH)D &lt; 10 ng/ml, group 2–62 pregnant women from 10 to 30ng/ml, group 3–12 pregnant women with a vitamin D content &gt; 30 ng/ml).</p></sec><sec><title>Results</title><p>Results. In group 1.86% of patients with severe vitamin D deficiency were diagnosed with threatened miscarriage, which is significantly higher than in group 3 (85.7% and 33.3%, χ2 = 7.490, p = 0.007). At the same time, retrochorial hematoma in group 1 occurred 3.5 times more often than in group 3 (57.1% and 16.67%, respectively, χ2 = 4.473, p = 0.035). Subsequently, every 4th woman from the group with vitamin D deficiency gave birth earlier than expected, which was not observed among patients from group 3 (25%, 0%, χ2 = 1.231, p = 0.268).</p></sec><sec><title>Conclusion</title><p>Conclusion. Prescribing cholecalciferol vitamin replacement therapy as part of complex preserving therapy for threatening miscarriage, followed by monitoring its blood level and deviating from normal parameters, contributing to a favorable course of pregnancy and improving perinatal outcomes.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>витамин D</kwd><kwd>рецептор витамина D</kwd><kwd>беременность</kwd><kwd>угрожающий выкидыш</kwd><kwd>трофобласт</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Vitamin D</kwd><kwd>vitamin D receptor</kwd><kwd>pregnancy</kwd><kwd>threatening miscarriage</kwd><kwd>trophoblast</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">Tamblyn J.A., Hewison M., Wagner C.L., Bulmer J.N., Kilby M.D. Immunological role of vitamin D at the maternal-fetal interface. 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