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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-197-1-14-17</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-1838</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>КЛИНИЧЕСКАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Сезонные колебания уровня витамина D у детей при онкогематологических заболеваниях</article-title><trans-title-group xml:lang="en"><trans-title>Seasonal fluctuations of vitamin D levels among children with oncohematological diseases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3043-8674</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лошкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Loshkova</surname><given-names>E. V.</given-names></name></name-alternatives><email xlink:type="simple">loshkova@rambler.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/0000-0002-9326-4085</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономаренко</surname><given-names>Ю. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarenko</surname><given-names>Yu. B.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ГБУЗ МО «Научно-исследовательский клинический институт детства Министерства здравоохранения Московской области»; Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Сибирский государственный медицинский университет» Министерства здравоохранения Российской Федерации (ФГБОУ ВО СибГМУ Минздрава России)<country>Россия</country></aff><aff xml:lang="en">Research Clinical Institute of Childhood of the Moscow Region; Siberian State Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Государственное бюджетное учреждение здравоохранения «Детская краевая клиническая больница» министерства здравоохранения Краснодарского края<country>Россия</country></aff><aff xml:lang="en">Children’s Regional Clinical Hospital the Krasnodar Territory<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>25</day><month>03</month><year>2022</year></pub-date><volume>0</volume><issue>1</issue><fpage>14</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лошкова Е.В., Пономаренко Ю.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Лошкова Е.В., Пономаренко Ю.Б.</copyright-holder><copyright-holder xml:lang="en">Loshkova E.V., Ponomarenko Y.B.</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://www.nogr.org/jour/article/view/1838">https://www.nogr.org/jour/article/view/1838</self-uri><abstract><p>Было проведено изучение обеспеченности 25(OH)D у 103 пациентов с онкогематологическими (ОГЗ) заболеваниями, проживающими в Московском регионе. Отмечена высокая частота выраженного дефицита 25(OH)D у 41,7% детей, дефицита - в 31,1% случаев, недостаточности - в 22,3% случаев. Только 4,9% детей имели нормальное содержание 25(ОН)D. По мере увеличения возраста частота дефицита 25(OH)D регистрируется чаще. Снижение обеспеченности 25(OH)D у пациентов с ОГЗ наблюдается в течение всего года и усугубляется в зимне-весенний период.</p></abstract><trans-abstract xml:lang="en"><p>25(OH)D sufficiency was studied among 103 patients with oncohematological diseases living in the Moscow regions. A high frequency of severe deficiency was shown in 41,7% of children, deficiency in 31,1% of cases, insufficiency in 22,3% of cases, 4.9% of children have a normal content of 25(OH)D. As the age increases, 25(OH)D deficiency becomes more pronounced. Impaired supply of 25(OH)D in patients with oncohematological diseases is observed throughout the year and is aggravated in the winter-spring period.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>витамин D</kwd><kwd>воспаление</kwd><kwd>25(OH)D</kwd><kwd>дети</kwd><kwd>дефицит</kwd><kwd>сезоны года</kwd><kwd>онкогематологические заболевания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>vitamin D</kwd><kwd>inflammation</kwd><kwd>25(OH)D</kwd><kwd>children</kwd><kwd>deficiency</kwd><kwd>seasons</kwd><kwd>oncohematological diseases</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">Ulanova A. S., Grigoryeva N. A., Turabov I. A., Rykov M. Yu. The lesion of the osteo-articular system in the onset of acute leukemia in childhood. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2020;65(5):87-92. 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