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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">perinatology</journal-id><journal-title-group><journal-title xml:lang="ru">Российский вестник перинатологии и педиатрии</journal-title><trans-title-group xml:lang="en"><trans-title>Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1027-4065</issn><issn pub-type="epub">2500-2228</issn><publisher><publisher-name>Ltd. “The National Academy of Pediatric Science and Innovation”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21508/1027-4065-2023-68-2-99-104</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-1808</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>В ПОМОЩЬ ПРАКТИЧЕСКОМУ ВРАЧУ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FOR THE PRACTITIONER</subject></subj-group></article-categories><title-group><article-title>Диагностика и лечение редкого заболевания — гомоцистинурии-мегалобластной анемии, тип cblG</article-title><trans-title-group xml:lang="en"><trans-title>Diagnosis and treatment of orphan disease — homocystinuria and megaloblastic anemia, type cblG</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7146-7220</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Николаева</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaeva</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николаева Екатерина  Александровна — доктор медицинских наук, руководитель отдела клинической генетики</p><p>125412 Москва, ул. Талдомская, д. 2</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">enikolaeva@pedklin.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/0000-0002-4026-3791</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семячкина</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Semyachkina</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семячкина Алла Николаевна — доктор медицинских наук, главный научный сотрудник отдела клинической генетики </p><p>125412 Москва, ул. Талдомская, д. 2</p></bio><bio xml:lang="en"><p>Moscow</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/0000-0003-4816-9369</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Забродина</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Zabrodina</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Забродина Анна Романовна — врач педиатрического отделения врожденных и наследственных заболеваний</p><p>125412 Москва, ул. Талдомская, д. 2</p><p> </p></bio><bio xml:lang="en"><p>Moscow</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/0000-0003-2275-9977</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Березина</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Berezina</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Березина  Марина  Юрьевна — психолог педиатрического отделения  врожденных и наследственных заболеваний </p><p>125412 Москва, ул. Талдомская, д. 2</p></bio><bio xml:lang="en"><p>Moscow</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/0000-0002-7291-5459</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боченков</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bochenkov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боченков   Сергей   Викторович — заведующий педиатрическим отделением врожденных и наследственных заболеваний </p><p>125412 Москва, ул. Талдомская, д. 2</p><p> </p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ОСП «Научно-исследовательский клинический институт педиатрии и детской хирургии им. академика Ю.Е. Вельтищева» ФГАОУ ВО РНИМУ им. Н.И. Пирогова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Veltischev Research and Clinical Institute for Pediatrics and Pediatric Surgery of the Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>27</day><month>04</month><year>2023</year></pub-date><volume>68</volume><issue>2</issue><fpage>99</fpage><lpage>104</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><copyright-holder xml:lang="en">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><license xlink:href="https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.ped-perinatology.ru/jour/article/view/1808">https://www.ped-perinatology.ru/jour/article/view/1808</self-uri><abstract><p>Термин «гомоцистинурия» объединяет ряд генетически детерминированных нозологических форм, вызванных нарушением обмена серосодержащих аминокислот (метионина, гомоцистеина), кобаламина и фолатов. Из группы этих заболеваний выделяют «классическую» гомоцистинурию, обусловленную недостаточностью цистатионин-бета-синтазы, и формы, связанные с дефектами процессов реметилирования метионина. Дана более подробная информация об одной из таких форм — гомоцистинурии-мегалобластной анемии, тип cblG, вызванной мутациями гена MTR. Представлены результаты наблюдения за ребенком с указанным заболеванием. В клиническом статусе отмечены интеллектуальное недоразвитие, аутистические черты поведения, стереотипии, нистагм, снижение остроты зрения, макроцитарная анемия, эпилепсия в стадии ремиссии. Для эффективного лечения требуется назначение не зарегистрированных в РФ препаратов — бетаина и гидроксикобаламина.</p></abstract><trans-abstract xml:lang="en"><p>The term «homocystinuria» combines a number of genetically determined nosological forms caused by defects of the metabolism of sulfur-containing amino acids (methionine, homocysteine), cobalamin and folate. The group of these diseases includes «classical» homocystinuria caused by insufficiency of cystathionine beta-synthase and forms associated with defects in methionine remethylation processes. More information is given about one of these forms — homocystinuria and megaloblastic anemia, type cblG, caused by MTR gene mutations. The results of observation of a child with this disease are presented. The clinical status includes: intellectual disability, autistic behavioral traits, stereotypes, nystagmus, visual impairment, macrocytic anemia, epilepsy in remission. Effective treatment requires the use of medications not registered in the Russian Federation — betaine and hydroxocobalamin.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гомоцистинурия-мегалобластная анемия тип cblG</kwd><kwd>диагностика</kwd><kwd>ген MTR</kwd><kwd>мутации c.3518C&gt;T и c.208T&gt;G</kwd><kwd>бетаин</kwd><kwd>гидроксикобаламин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>homocystinuria and megaloblastic anemia — type cblG</kwd><kwd>diagnostics</kwd><kwd>MTR gene</kwd><kwd>c.3518C&gt;T and c.208T&gt;G mutations</kwd><kwd>betaine</kwd><kwd>hydroxocobalamin</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">Waters D., Adeloye D., Woolham D., Wastnedge E., Patel S., Rudan I. Global birth prevalence and mortality from inborn errors of metabolism: a systematic analysis of the evidence. J Glob Health 2018; 8(2): 021102. 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