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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">10.21508/1027-4065-2021-66-1-113-116</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-1347</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>КЛИНИЧЕСКИЙ СЛУЧАЙ</subject></subj-group></article-categories><title-group><article-title>Клинический случай мукополисахаридоза II типа (синдрома Хантера)</article-title><trans-title-group xml:lang="en"><trans-title>Clinical case of mucopolysaccharidosis type II (Hunter syndrome)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8186-430X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савельева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savelieva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савельева Елена Вячеславовна – кандидат медицинских наук, доцент кафедры факультетской педиатрии </p><p>460014 Оренбург, ул. Советская, д. 6</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><email xlink:type="simple">seva-610@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/0000-0002-4686-3245</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пахомов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Pakhomov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пахомов Антон Павлович – студент V курса педиатрического факультета </p><p>460014 Оренбург, ул. Советская, д. 6</p><p> </p></bio><bio xml:lang="en"><p>Orenburg</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Илюхина</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyukhina</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Илюхина Татьяна Александровна – врач-гастроэнтеролог нефрологического отделения </p><p>460006 Оренбург, ул. Рыбаковская, д. 3</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Громаковская</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gromakovskaya</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Громаковская Елена Ивановна – врач-гастроэнтеролог нефрологического отделения </p><p>460006 Оренбург, ул. Рыбаковская, д. 3</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Оренбургский государственный медицинский университет» Минздрава РФ; &#13;
ГАУЗ «Областная детская клиническая больница»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Orenburg State Medical University Ministry of Health of the Russian Federation;&#13;
Regional Children’s Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Оренбургский государственный медицинский университет» Минздрава РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Orenburg State Medical University Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГАУЗ «Областная детская клиническая больница»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Regional Children’s Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2021</year></pub-date><volume>66</volume><issue>1</issue><fpage>113</fpage><lpage>116</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2021</copyright-statement><copyright-year>2021</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/1347">https://www.ped-perinatology.ru/jour/article/view/1347</self-uri><abstract><p>Представлен случай редкого (орфанного) заболевания – мукополисахаридоза II типа. В возрасте 1 года по данным ультразвукового исследования у ребенка была выявлена гепатоспленомегалия. С 1,5 года ребенок наблюдался ЛОР-врачом по поводу аденоидов II–III степени, аденотомия проведена в возрасте 2 лет, в дальнейшем наблюдался рецидив гиперплазии аденоидов. В возрасте 3 лет предположен мукополисахаридоз II типа. Диагноз был подтвержден после выявления повышенного уровня гликизаминогликанов (гепарансульфата и дерматансульфата) в моче и мутации р.Lis135Glu в 3-м экзоне гена IDS в гемизиготном состоянии. Назначена заместительная терапия Элапразой. Клинический полиморфизм, различная выраженность симптомов в сочетании с низкой распространенностью обусловливают трудности в ранней идентификации мукополисахаридоза II типа. Своевременная диагностика крайне важна для направления таких детей к специалистам междисциплинарного центра, имеющих опыт проведения ферментозаместительной терапии, которая наиболее эффективна в ранней стадии заболевания.</p></abstract><trans-abstract xml:lang="en"><p>The article presents a rare case of type II mucopolysaccharidosis (MPs) in children. From the age of one and a half, the child was observed by an ENT doctor for 2–3 degree adenoids. At the age of 2, an adenotomy was performed. In the future, a relapse of adenoid hyperplasia. 1 year of age according to the ultrasound revealed hepatosplenomegaly. At the age of three years, type 2 mucopolysaccharidosis was suspected, which was confirmed on the basis of increased levels of heparan sulfate and dermatansulfate in the urine, molecular genetic diagnostics (mutation in exon 3 of IDS Lis135Glu in the hemizygous state. Appointed replacement therapy: Elaprase. Clinical polymorphism, different severity of symptoms combined with rare occurrence cause certain difficulties in early identification of MPs-II. Timely diagnosis is extremely important for referral of such children to specialists of an interdisciplinary center who have experience in specific treatment that is most effective in the early stage of the disease.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мукополисахаридоз II типа</kwd><kwd>синдром Хантера</kwd><kwd>ген IDS</kwd><kwd>ферментозаместительная терапия</kwd><kwd>Элапраза®</kwd><kwd>гидрокортизон</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>mucopolysaccharidosis type II</kwd><kwd>hunter syndrome</kwd><kwd>IDS</kwd><kwd>enzyme replacement therapy</kwd><kwd>Elaprase®</kwd><kwd>hydrocortisone</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">Лоскутова C. А., Пекарева Н.А. 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