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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">ppharm</journal-id><journal-title-group><journal-title xml:lang="ru">Педиатрическая фармакология</journal-title><trans-title-group xml:lang="en"><trans-title>Pediatric pharmacology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1727-5776</issn><issn pub-type="epub">2500-3089</issn><publisher><publisher-name>Издательство «ПедиатрЪ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15690/pf.v22i2.2872</article-id><article-id custom-type="elpub" pub-id-type="custom">ppharm-2603</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT REPORT</subject></subj-group></article-categories><title-group><article-title>Клинический случай синдрома Ретта: опыт наблюдений за ребенком старшего дошкольного возраста</article-title><trans-title-group xml:lang="en"><trans-title>Clinical Case of Rett Syndrome: the Experience of Observing Older Preschooler</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>Коваленкова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalenkova</surname><given-names>Ekaterina A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коваленкова Екатерина Андреевна – студентка.</p><p>Смоленск</p></bio><bio xml:lang="en"><p>Ekaterina A. Kovalenkova – student.</p><p>Smolensk</p></bio><email xlink:type="simple">katerina_kovalenkova@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/0009-0004-4154-1521</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коваленкова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalenkova</surname><given-names>Sofya A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коваленкова Софья Андреевна - студентка 5-го курса педиатрического факультета ФГБОУ ВО Смоленский государственный медицинский университет.</p><p>214019, Смоленск, ул. Крупской, д. 28, тел.: +7 (915) 633-06-03</p></bio><bio xml:lang="en"><p>Sofya A. Kovalenkova - student.</p><p>28, Krupskoy Str., Smolensk, 214019, телефон: +7 (915) 633-06-03</p></bio><email xlink:type="simple">kovalenkova.sofya@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крутиков</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Krutikov</surname><given-names>Dmitry S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крутиков Дмитрий Сергеевич - студент.</p><p>Смоленск</p></bio><bio xml:lang="en"><p>Dmitry S. Krutikov - student.</p><p>Smolensk</p></bio><email xlink:type="simple">krutikovdima1@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Смоленский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Smolensk State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>23</day><month>05</month><year>2025</year></pub-date><volume>22</volume><issue>2</issue><fpage>184</fpage><lpage>188</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коваленкова Е.А., Коваленкова С.А., Крутиков Д.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Коваленкова Е.А., Коваленкова С.А., Крутиков Д.С.</copyright-holder><copyright-holder xml:lang="en">Kovalenkova E.A., Kovalenkova S.A., Krutikov D.S.</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.pedpharma.ru/jour/article/view/2603">https://www.pedpharma.ru/jour/article/view/2603</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. Синдром Ретта — редкое нейропсихическое нарушение, которое связано со спорадическими мутациями Х-сцепленного гена метил-CpG-связывающего белка 2 (MECP2). Учитывая высокую значимость ранней диагностики, необходимость в мультидисциплинарном подходе к лечению и поддержке таких детей, исследование клинических случаев синдрома Ретта имеет особое значение для повышения осведомленности и улучшения качества жизни пациентов и их семей.</p><p>Описание клинического случая. В статье описана клиническая картина синдрома Ретта у девочки П., родившейся от вторых естественных родов на 40-й нед с массой тела при рождении 3200 г. До дебюта заболевания отклонений в формировании психомоторных навыков у ребенка не отмечалось. Однако к двум годам начали проявляться характерные симптомы: потеря речи, стереотипные движения, эквинусная походка, бруксизм, общение взглядом. Диагноз синдрома Ретта был подтвержден при молекулярно-генетическом исследовании: выявлена мутация Х-сцепленного гена метил-CpG-связывающего белка 2 (MECP2).</p></sec><sec><title>Заключение</title><p>Заключение. Данный клинический случай демонстрирует необходимость информированности врачей для своевременного выявления заболевания и мультидисциплинарного подхода к его диагностике и коррекции. Использование ДНК-скрининга для раннего выявления заболеваний значительно повышает шансы на эффективное лечение и реабилитацию.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Rett syndrome is a rare neuropsychiatric disorder associated with sporadic mutations in the X-linked methyl-CpG binding protein 2 (MECP2) gene. Considering the cruciality of early diagnosis, the necessity of multidisciplinary approach in the management and support of such children, the study of Rett syndrome clinical cases is essential to raise awareness and improve the patients and their families’ quality of life.</p><p>Clinical case description. This article describes the clinical picture of Rett syndrome in girl P., born from second natural delivery at the 40th week of gestation, weight at birth – 3200 g. There were no deviations in psychomotor skills development before disease onset. However, classic manifestations have appeared by the age of two: alalia, motor stereotypy, equinus gait, bruxism, communication via sight. The Rett syndrome was confirmed via molecular genetic study: mutation in the X-linked methyl-CpG binding protein 2 (MECP2) gene was revealed.</p></sec><sec><title>Conclusion</title><p>Conclusion. This clinical case demonstrates the importance to inform doctors about timely disease detection and multidisciplinary approach to its diagnosis and management. The use of DNA screening for early disease detection greatly improves the chances of effective treatment and rehabilitation.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром Ретта</kwd><kwd>старший дошкольный возраст</kwd><kwd>нейропсихическое нарушение</kwd><kwd>мутация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Rett syndrome</kwd><kwd>older preschool age</kwd><kwd>psychoneurological disorders</kwd><kwd>mutation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают признательность научному руководителю проекта и родителям ребенка</funding-statement><funding-statement xml:lang="en">The authors express gratitude to the project supervisor and child’s parents</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">Petriti U, Dudman DC, Scosyrev E, Lopez-Leon S. 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