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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">Russian Journal of Infection and Immunity</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Infection and Immunity</journal-title><trans-title-group xml:lang="ru"><trans-title>Инфекция и иммунитет</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-7619</issn><issn publication-format="electronic">2313-7398</issn><publisher><publisher-name xml:lang="en">SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1792</article-id><article-id pub-id-type="doi">10.15789/2220-7619-COV-1792</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ 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">Comparison of vitamin D levels between mothers and infants with and without prolonged membrane rupture</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнение уровней витамина D у матерей и новорожденных с длительным преждевременным разрывом плодных оболочек и без него</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Boskabadi</surname><given-names>H.</given-names></name><name xml:lang="ru"><surname>Боскабади</surname><given-names>Х.</given-names></name></name-alternatives><address><country country="IR">Iran, Islamic Republic of</country></address><bio xml:lang="en"><p>Professor, Department of Pediatrics, Faculty of Medicine</p></bio><bio xml:lang="ru"><p>профессор кафедры педиатрии, факультет медицины</p></bio><email>boskabadih@mums.ac.ir</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rakhshanizadeh</surname><given-names>F.</given-names></name><name xml:lang="ru"><surname>Рахшанизаде</surname><given-names>Ф.</given-names></name></name-alternatives><address><country country="IR">Iran, Islamic Republic of</country></address><bio xml:lang="en"><p>Assistant Professor of Pediatrics, Department of Pediatrics, Faculty of Medicine</p></bio><bio xml:lang="ru"><p>ассистент кафедры педиатрии, факультет медицины</p></bio><email>RakhshanizadehF@mums.ac.ir</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6543-9095</contrib-id><name-alternatives><name xml:lang="en"><surname>Zakerihamidi</surname><given-names>Maryam</given-names></name><name xml:lang="ru"><surname>Закерихамиди</surname><given-names>Марьям</given-names></name></name-alternatives><address><country country="IR">Iran, Islamic Republic of</country></address><bio xml:lang="en"><p>PhD (Reproductive Health), Assistant Professor of Reproductive Health, Department of Midwifery, Faculty of Medical Sciences</p></bio><bio xml:lang="ru"><p>кандидат наук (репродуктивное здоровье), доцент кафедры акушерства факультета медицинских наук</p></bio><email>maryamzakerihamidi@yahoo.co.nz</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Mashhad University of Medical Sciences</institution></aff><aff><institution xml:lang="ru">Мешхедский университет медицинских наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Islamic Azad University, Tonekabon Branch</institution></aff><aff><institution xml:lang="ru">Исламский университет Азад, филиал Тонкабон</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-04-12" publication-format="electronic"><day>12</day><month>04</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-07-04" publication-format="electronic"><day>04</day><month>07</month><year>2022</year></pub-date><volume>12</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>556</fpage><lpage>562</lpage><history><date date-type="received" iso-8601-date="2021-09-01"><day>01</day><month>09</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2022-02-03"><day>03</day><month>02</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Boskabadi H., Rakhshanizadeh F., Zakerihamidi M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Боскабади Х., Рахшанизаде Ф., Закерихамиди М.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Boskabadi H., Rakhshanizadeh F., Zakerihamidi M.</copyright-holder><copyright-holder xml:lang="ru">Боскабади Х., Рахшанизаде Ф., Закерихамиди М.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://iimmun.ru/iimm/article/view/1792">https://iimmun.ru/iimm/article/view/1792</self-uri><abstract xml:lang="en"><p><italic>Background.</italic> Premature membrane rupture is a known causes of preterm labor and accounts for approximately one-third of cases. Vitamin D deficiency may play a role in preterm labor as well. <italic>Objective.</italic> The present study aimed to compare vitamin D levels in mothers and infants with and without prolonged rupture of membranes (PROM). <italic>Materials and methods.</italic> This cross-sectional study was conducted with 241 babies, with and without a history of membrane rupture, in mothers in the neonatal ward of Ghaem Hospital, Mashhad, from 2019 to 2021 with available sampling methods. After confirmation of prolonged membrane rupture (more than 18 hours before birth) based on history and examination with a speculum, we completed a data collection tool, a checklist including laboratory evaluation and neonatal and maternal characteristics. The conditions of neonates with and without prolonged membrane rupture were compared. Data were analyzed by T-test and Chi-square. <italic>Results.</italic> We examined a total of 241 neonates including 148 (61.4%) without prolonged rupture of the membranes in mothers and 93 (38.6%) with PROM. There were statistically significant differences between the two groups regarding: maternal vitamin D level (p = 0.001); neonatal vitamin D level (p = 0.001); and fifth minute Apgar score (p = 0.003). These variables were lower in the group of neonates with PROM. <italic>Conclusion.</italic> Vitamin D deficiency in mothers was significantly associated with prolonged membrane rupture. With increasing severity of vitamin D deficiency, the probability of PROM increases and, therefore, the likelihood of preterm labor and its complications rises.</p></abstract><trans-abstract xml:lang="ru"><p><italic>Актуальность.</italic> Преждевременный разрыв плодных оболочек является одной из причин преждевременных родов и сопровождает примерно одну треть всех родов. Дефицит витамина D также может играть роль в развитии преждевременных родов. Целью настоящего исследования было сравнение уровней витамина D у матерей и младенцев с длительным преждевременным разрывом плодных оболочек и без него. <italic>Материалы и методы.</italic> В настоящее исследование был включен 241 младенец, рожденный на фоне длительного преждевременного разрыва плодных оболочек (ПРПО) и без такового в неонатальном отделении больницы Гаем, Мешхед, с 2019 по 2021 г. После подтверждения ПРПО (более 18 часов до рождения) на основании анамнеза и осмотра с помощью зеркал, было проведено лабораторное исследование и зафиксированы показатели новорожденного и матери. Сравнивали состояние новорожденных с длительным ПРПО и без такового. Статистическую обработку данных проводили, определяя критериев Стьюдента и Пирсона (хи-квадрат). <italic>Результаты.</italic> Обследован 241 новорожденный, в том числе 93 (38.6%) рожденных на фоне длительного ПРПО и 148 (61.4%) без ПРПО. Между двумя группами обнаружена статистически значимая разница в уровне витамина D у матери (p = 0.001), в уровне витамина D у новорожденного (p = 0.001) и в оценке по шкале Апгар на пятой минуте (p = 0.003). Это означает, что величины указанных переменных были ниже в группе новорожденных с ПРПО. <italic>Вывод.</italic> Длительный ПРПО в значительной степени коррелирует с дефицитом витамина D у матерей, а с усилением тяжести дефицита витамина D увеличивается вероятность ПРПО и, следовательно, повышается вероятность преждевременных родов и их осложнений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fetal membranes</kwd><kwd>prolonged premature rupture of membranes</kwd><kwd>newborn</kwd><kwd>vitamin D</kwd><kwd>Apgar score</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>плодные оболочки</kwd><kwd>пролонгированный преждевременный разрыв плодных оболочек</kwd><kwd>новорожденный</kwd><kwd>витамин D</kwd><kwd>матери</kwd><kwd>оценка по шкале Апгар</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Al-Garawi A., Carey V.J., Chhabra D., Mirzakhani H., Morrow J., Lasky-Su J., Qiu W., Laranjo N., Litonjua A.A., Weiss S.T. 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