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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">rosped</journal-id><journal-title-group><journal-title xml:lang="ru">Российский педиатрический журнал имени М.Я. Студеникина</journal-title><trans-title-group xml:lang="en"><trans-title>M.Ya. Studenikin Russian Pediatric Journal</trans-title></trans-title-group></journal-title-group><publisher><publisher-name>ФГАУ «НМИЦ здоровья детей» Минздрава России</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46563/1560-9561-2024-27-1-34-39</article-id><article-id custom-type="edn" pub-id-type="custom">vuoexi</article-id><article-id custom-type="elpub" pub-id-type="custom">rosped-530</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Полиморфные замены в генах фолатного цикла как предикторы гипергомоцистеинемии</article-title><trans-title-group xml:lang="en"><trans-title>Polymorphic substitutions in folate cycle genes as predictors of hyperhomocysteinemia in children</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8586-1330</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Строзенко</surname><given-names>Людмила Анатольевна</given-names></name><name name-style="western" xml:lang="en"><surname>Strozenko</surname><given-names>Lyudmila A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, проф. каф. пропедевтики детских болезней, директор Института педиатрии ФГБОУ ВО АГМУ Минздрава России</p><p>e-mail: strozen@mail.ru</p></bio><bio xml:lang="en"><p>Doctor of Medical Sciences, Director of the Institute of Pediatrics, Prof. of the Department of propaedeutics of children diseases, Altai State Medical University</p><p>e-mail: strozen@mail.ru</p></bio><email xlink:type="simple">strozen@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/0000-0002-7794-8129</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономарев</surname><given-names>Виктор Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarev</surname><given-names>Viktor S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ассистент каф. факультетской педиатрии ФГБОУ ВО АГМУ Минздрава России</p><p>e-mail: ponomarev282094@gmail.com</p></bio><email xlink:type="simple">ponomarev282094@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6284-1604</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лобанов</surname><given-names>Юрий Федорович</given-names></name><name name-style="western" xml:lang="en"><surname>Lobanov</surname><given-names>Yuriy F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, проф., зав. каф. пропедевтики детских болезней ФГБОУ ВО АГМУ Минздрава России</p><p>e-mail: ped2@agmu.ru</p></bio><email xlink:type="simple">ped2@agmu.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/0000-0002-3823-6276</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дорохов</surname><given-names>Николай Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Dorokhov</surname><given-names>Nikolay A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. мед. наук, доцент, зав. каф. факультетской педиатрии ФГБОУ ВО АГМУ Минздрава России</p><p>e-mail: nik-dorokhov@mail.ru</p></bio><email xlink:type="simple">nik-dorokhov@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/0000-0001-8328-4050</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сукманова</surname><given-names>Ирина Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Sukmanova</surname><given-names>Irina A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, проф., врач кардиолог высшей квалификационной категории КГБУЗ «Алтайский краевой кардиологический диспансер»</p><p>e-mail: vdovinai@yandex.ru</p></bio><email xlink:type="simple">vdovinai@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-6321-3916</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевченко</surname><given-names>Карина Игоревна</given-names></name><name name-style="western" xml:lang="en"><surname>Shevchenko</surname><given-names>Karina I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Врач невролог первой квалификационной категории КГБУЗ «Краевая клиническая больница скорой медицинской помощи № 2»</p><p>e-mail: medicinabookbrain@gmail.com</p></bio><email xlink:type="simple">medicinabookbrain@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3727-5481</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скударнов</surname><given-names>Евгений Васильевич</given-names></name><name name-style="western" xml:lang="en"><surname>Skudarnov</surname><given-names>Evgeniy V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, проф. каф. факультетской педиатрии ФГБОУ ВО АГМУ Минздрава России</p><p>e-mail: sev310@mail.ru</p></bio><email xlink:type="simple">sev310@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/0009-0008-0370-371X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Санина</surname><given-names>Ольга Олеговна</given-names></name><name name-style="western" xml:lang="en"><surname>Sanina</surname><given-names>Olga O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Врач невролог высшей квалификационной категории КГБУЗ «Детская городская больница № 1», г. Барнаул</p><p>e-mail: olgperc@yandex.ru</p></bio><email xlink:type="simple">olgperc@yandex.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Алтайский государственный медицинский университет»</institution></aff><aff xml:lang="en"><institution>Altai State Medical University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Краевое ГБУЗ «Алтайский краевой кардиологический диспансер»</institution></aff><aff xml:lang="en"><institution>Altai Regional Cardiologic Dispensary</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Краевое ГБУЗ «Краевая клиническая больница скорой медицинской помощи № 2»</institution></aff><aff xml:lang="en"><institution>Regional Clinical Hospital of Emergency Medical Care No. 2</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Краевое ГБУЗ «Детская городская больница № 1»</institution></aff><aff xml:lang="en"><institution>Children Clinical Hospital No. 1</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>04</month><year>2024</year></pub-date><volume>27</volume><issue>1</issue><fpage>34</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Строзенко Л.А., Пономарев В.С., Лобанов Ю.Ф., Дорохов Н.А., Сукманова И.А., Шевченко К.И., Скударнов Е.В., Санина О.О., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Строзенко Л.А., Пономарев В.С., Лобанов Ю.Ф., Дорохов Н.А., Сукманова И.А., Шевченко К.И., Скударнов Е.В., Санина О.О.</copyright-holder><copyright-holder xml:lang="en">Strozenko L.A., Ponomarev V.S., Lobanov Y.F., Dorokhov N.A., Sukmanova I.A., Shevchenko K.I., Skudarnov E.V., Sanina O.O.</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.rosped.ru/jour/article/view/530">https://www.rosped.ru/jour/article/view/530</self-uri><abstract><sec><title>Введение</title><p>Введение. Мутантные аллели генов ферментов фолатного цикла могут привести к значимым нарушениям его функции и различной тяжести патологии. Несколько дефектов этих генов приводят к тяжёлой гипергомоцистеинемии, самой распространённой формой которой является дефицит цистатионин-бета-синтазы В.</p></sec><sec><title>Цель</title><p>Цель: установить полиморфные замены в генах ферментов фолатного цикла, способствующие формированию гипергомоцистеинемии у детей.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Обследован 271 ребёнок в возрасте 13–18 лет. Анализ генетических полиморфизмов фолатного цикла проводился молекулярно-генетическим методом. Количественное определение содержания гомоцистеина и фолиевой кислоты в крови выполнено методом хемилюминесцентного иммуноанализа на микрочастицах.</p></sec><sec><title>Результаты</title><p>Результаты. Частота аллеля Т гена MTHFR 677 была большей у подростков основной группы по сравнению с контролем (p = 0,043). Частота гомозиготного генотипа 66 АА гена MTRR у детей группы сравнения была значимо большей (p = 0,049), однако гетерозиготный генотип 66 AG гена MTRR значительно чаще выявлялся у подростков основной группы (p = 0,008). Средние концентрации гомоцистеина у детей основной группы составили 11,6 мкмоль/л, у подростков контрольной группы — 9,3 мкмоль/л (p = 0,021). Гипергомоцистеинемия выявлена у 217 (80,1%) детей основной группы и у 57 (49,6%) детей контрольной группы (p &lt; 0,001). У детей основной группы определён исходный уровень фолатов в сыворотке крови. Средняя величина витамина В9 в крови детей основной группы составила 3,7 нг/мл, причём у 145 (53,5%) детей этот показатель был значительно снижен.</p></sec><sec><title>Заключение</title><p>Заключение. Низкий уровень фолиевой кислоты способствует повышению уровня гомоцистеина в плазме крови. Приём витамина В9 и витаминно-фолатных комплексов значительно снижает уровень гомоцистеина в плазме крови (p &lt; 0,001).</p></sec><sec><title>Участие авторов</title><p>Участие авторов:Строзенко Л.А. — концепция, дизайн исследования;Пономарев В.С., Санина О.О., Сукманова И.А., Шевченко К.И. — сбор и обработка материала;Лобанов Ю.Ф., Скударнов Е.В. — редактирование;Дорохов Н.А. — написание текста.Все соавторы — утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Данная работа выполнена в рамках гранта губернатора Алтайского края в сфере медицинской профилактики, реабилитации и здоровьесбережения населения.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов. </p></sec><sec><title>Поступила 11</title><p>Поступила 11.01.2024Принята к печати 30.01.2024Опубликована 28.02.2024</p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Mutant alleles of genes of folate cycle enzymes can lead to the significant deterioration of its function and varying severity of pathology. Several defects in these genes lead to severe hyperhomocysteinemia, the most common form of which is a deficiency of cystathionine beta-synthase B.</p></sec><sec><title>Aim</title><p>Aim: to establish polymorphic substitutions in the genes of folate cycle enzymes that contribute to the formation of hyperhomocysteinemia in children.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Two hundred seventy one children aged of 13–18 years were examined. The analysis of genetic polymorphisms of the folate cycle was carried out using a molecular genetic method. Quantitative determination of the blood homocysteine and folic acid level was performed by chemiluminescent immunoassay on microparticles. Statistical data processing was carried out using Statistica 6.1 application programs (StatSoft Inc., USA).</p></sec><sec><title>Results</title><p>Results. The frequency of the T allele of the MTHFR 677 gene was revealed to be higher in adolescents of the main group compared with the control (p = 0.043). The frequency of the homozygous genotype 66 AA of the MTRR gene in children of the comparison group was significantly higher (p = 0.049), however, the heterozygous genotype 66 AG of the MTRR gene was significantly more often detected in adolescents of the main group (p = 0.008). The average concentrations of homocysteine in children of the main group were 11.6 mmol/L, in adolescents of the control group 9.3 mmol/L (p = 0.021). Hyperhomocysteinemia in children of the main group was detected in 217 (80.1%) adolescents, and in 57 (49.6%) children of the control group (p &lt; 0.001). The baseline serum folate level was determined in the children of the main group. The average amount of vitamin B9 in the blood of children of the main group was 3.7 ng/ml, and in 145 (53.5%) children this indicator was significantly reduced.</p></sec><sec><title>Conclusion</title><p>Conclusion. Low levels of folic acid contribute to an increase in homocysteine in blood plasma. Taking vitamin B9 and vitamin folate complexes significantly reduces the level of homocysteine in blood plasma (p &lt; 0.001).</p></sec><sec><title>Contribution</title><p>Contribution:Strozenko L.A. — concept, research design;Ponomarev V.S., Sanina O.O. Sukmanova I.A., Shevchenko K.I. — collection and processing of material;Lobanov Yu.F., Skudarnov E.V. — editing the text;Dorokhov N.A. — writing the text. All co-authors — approval of the final version of the article, responsibility for the integrity of all parts of the article.</p></sec><sec><title>Acknowledgment</title><p>Acknowledgment. This work was carried out within the framework of a grant from the Governor of the Altai Territory in the field of medical prevention, rehabilitation and health protection of the population.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Received</title><p>Received: January 11, 2024Accepted: January 30, 2024Published: February 28, 2024</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>гомоцистеин</kwd><kwd>фолиевая кислота</kwd><kwd>фолатный цикл</kwd><kwd>генетические полиморфизмы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>homocysteine</kwd><kwd>folic acid</kwd><kwd>folate cycle</kwd><kwd>genetic polymorphisms</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">Maron B.A., Loscalzo J. Homocysteine. Clin. Lab. Med. 2006; 26(3): 591–609. https://doi.org/10.1016/j.cll.2006.06.008</mixed-citation><mixed-citation xml:lang="en">Maron B.A., Loscalzo J. Homocysteine. Clin. Lab. 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