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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">vsp</journal-id><journal-title-group><journal-title xml:lang="ru">Вопросы современной педиатрии</journal-title><trans-title-group xml:lang="en"><trans-title>Current Pediatrics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-5527</issn><issn pub-type="epub">1682-5535</issn><publisher><publisher-name>Издательство «ПедиатрЪ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15690/vsp.v21i6.2461</article-id><article-id custom-type="elpub" pub-id-type="custom">vsp-3070</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>ОРИГИНАЛЬНАЯ СТАТЬЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Обеспеченность витамином D детей в возрасте 7–8 лет, проживающих в разных географических зонах (48–52° северной широты): одномоментное исследование</article-title><trans-title-group xml:lang="en"><trans-title>Vitamin D Supplementation of 7–8 Years Old Children from Different Geographical Areas (48–52° North Latitude): Cross Sectional Study</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4195-2350</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сенькевич</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Senkevich</surname><given-names>Olga A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сенькевич Ольга Александровна, доктор медицинских наук, профессор, заведующая кафедрой педиатрии, неонатологии и перинатологии с курсом неотложной медицины Института непрерывного профессионального образования и аккредитации/</p><p>тел.: +7 (4212) 30-53-11</p><p>680000, Хабаровск, ул. Муравьева-Амурского, 35</p></bio><bio xml:lang="en"><p>Khabarovsk</p></bio><email xlink:type="simple">senkevicholga@ya.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/0000-0001-8022-3279</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернобровкина</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernobrovkina</surname><given-names>Maria A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хабаровск</p></bio><bio xml:lang="en"><p>Khabarovsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1803-9168</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковальский</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalsky</surname><given-names>Yuri G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хабаровск</p></bio><bio xml:lang="en"><p>Khabarovsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Дальневосточный государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The Far Eastern State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2022</year></pub-date><volume>21</volume><issue>6</issue><fpage>487</fpage><lpage>492</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сенькевич О.А., Чернобровкина М.А., Ковальский Ю.Г., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Сенькевич О.А., Чернобровкина М.А., Ковальский Ю.Г.</copyright-holder><copyright-holder xml:lang="en">Senkevich O.A., Chernobrovkina M.A., Kovalsky Y.G.</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://vsp.spr-journal.ru/jour/article/view/3070">https://vsp.spr-journal.ru/jour/article/view/3070</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. Распространенность дефицита витамина D у детей в зависимости от географической широты проживания требует дополнительного изучения. Это необходимо для организации проведения профилактических мероприятий для снижения риска развития патологических состояний, связанных с дефицитом витамина D.</p><p>Цель исследования — изучить обеспеченность витамином D детей в возрасте 7–8 лет, проживающих в различных географических широтах одного субъекта Российской Федерации.</p></sec><sec><title>Методы</title><p>Методы. В исследование включали условно здоровых детей, проживающих в трех географических зонах (северной — 52°, центральной — 50°, южной — 48°) одного региона (Хабаровский край). Обеспеченность витамином D оценивали по концентрации 25(OH)D в сыворотке крови методом твердофазного иммуноферментного анализа. Недостаточность витамина D устанавливали при концентрации 25(OH)D 21–30 нг/мл, дефицит — 10–20 нг/мл, тяжелый дефицит — &lt; 10 нг/мл; оптимальной считали концентрацию 25(OH)D в диапазоне 30–100 нг/мл.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено увеличение распространенности дефицита и недостаточности витамина D от южной (57%) к центральной (73%) и северной (83%) географическим зонам среди детей в возрасте 7–8 лет, проживающих в одном регионе. Распространенность дефицита и недостаточности витамина D (25(OH)D  30 нг/мл) среди детей, проживающих в северной географической зоне, была в 3,8 раза (95% доверительный интервал 1,2–12,7) выше, чем среди сверстников, проживающих на юге края.</p></sec><sec><title>Заключение</title><p>Заключение. Одним из факторов, влияющих на концентрацию 25(OH)D в сыворотке крови детей региона, является уровень инсоляции, определяемый географической широтой проживания. Разница в 4° с.ш. является существенной в определении статуса витамина D у жителей относительно высоких широт. Необходимы дальнейшие исследования факторов, ассоциированных с концентрацией 25(OH)D у детей, проживающих в разных широтах (уровень инсоляции, число солнечных дней в году, особенности питания и быта семей).</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. The prevalence of vitamin D deficiency in children by their geographic latitude of residence requires follow-up study. This is crucial for implementation of preventive measures that can reduce the risk of developing pathological conditions associated with vitamin D deficiency.</p></sec><sec><title>Objective</title><p>Objective. The aim of the study is to study the vitamin D supplementation of 7–8 years old children living in different geographical latitudes of one subject of Russian Federation.</p></sec><sec><title>Methods</title><p>Methods. The study included relatively healthy children living in three geographical areas (northern — 52°, central — 50°, southern — 48°) of one region (Khabarovsk Krai). Vitamin D supplementation was evaluated by 25(OH)D serum concentration via enzyme-linked immunosorbent assay. Vitamin D insufficiency was diagnosed at 25(OH)D concentration of 21–30 ng/ml, deficiency — 10–20 ng/ml, severe deficiency — &lt; 10 ng/ml; optimal 25(OH)D concentration was considered as 30–100 ng/ml.</p></sec><sec><title>Results</title><p>Results. The increase in prevalence of vitamin D deficiency and insufficiency has been revealed with gradual increase from southern (57%) to central (73%) and northern (83%) geographic areas in 7–8 years old children living in the same region. The prevalence of vitamin D deficiency and insufficiency (25(OH)D  30 ng/mL) among children living in the northern geographic area was greater by 3.8-fold (95% confidence interval 1.2–12.7) then among peers living in the southern areas.</p></sec><sec><title>Conclusion</title><p>Conclusion. One factor affecting 25(OH)D serum concentration in children of this region is the insolation level determined by the geographical latitude of residence. The 4°N difference is significant in determining vitamin D status in residents of relatively high latitudes. Further studies of factors associated with 25(OH)D concentration in children living in different latitudes are required (insolation level, number of sunny days per year, food and household characteristics in families).</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>витамин D</kwd><kwd>25(OH)D</kwd><kwd>дети</kwd><kwd>северная широта</kwd><kwd>географическая зона</kwd></kwd-group><kwd-group xml:lang="en"><kwd>vitamin D</kwd><kwd>25(OH)D</kwd><kwd>children</kwd><kwd>north latitude</kwd><kwd>geographical area</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Отсутствует.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Holick MF. Vitamin D deficiency. N Engl J Med. 2007;357(3): 266–281. doi: https://doi.org/10.1056/NEJMra070553</mixed-citation><mixed-citation xml:lang="en">Holick MF. Vitamin D deficiency. 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