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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">10.21508/1027-4065-2020-65-6-42-49</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-1289</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Диагностическое значение экспрессии коллагена IV типа в почечных гломерулах при синдроме Альпорта</article-title><trans-title-group xml:lang="en"><trans-title>Diagnostic Value of Type IV Collagen Expression in Renal Glomeruli at Alport’s 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/0000-0002-3699-1884</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аксенова</surname><given-names>М. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksenova</surname><given-names>M. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аксенова Марина Евгеньевна – к.м.н., вед. науч. сотр. отдела наследственных и приобретенных болезней почек, врач-нефролог консультативно-диагностического отделения </p><p>125412 Москва, ул. Талдомская, д. 2 </p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">maksyonova@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/0000-0002-0934-0349</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Повилайтите</surname><given-names>П. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Povilaitite</surname><given-names>P. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Повилайтите Патриция Эдмундовна – д.м.н., дир. Ростовского областного патологоанатомического бюро</p><p>344015 Ростов-на-Дону, ул. Благодатная, д. 170 А </p></bio><bio xml:lang="en"><p>Rostov-on-Don</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3182-5892</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Конькова</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Konkova</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Конькова Наталья Евгеньевна – к.м.н., зав. отделением нефрологии</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/0000-0002-3050-7748</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Длин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dlin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Длин Владимир Викторович – д.м.н., и.о. дир., рук. отдела наследственных и приобретенных болезней почек им. профессора М.С. Игнатовой </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-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ОСП «Научно-исследовательский клинический институт педиатрии 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 of the Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Ростовское областное патологоанатомическое бюро</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Rostov Region Pathoanatomical Bureau</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2021</year></pub-date><volume>65</volume><issue>6</issue><fpage>42</fpage><lpage>49</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/1289">https://www.ped-perinatology.ru/jour/article/view/1289</self-uri><abstract><p>Синдром Альпорта – наследственное мультисистемное заболевание, характеризующееся развитием прогрессирующей нефропатии. Ранняя диагностика и последующее назначение нефропротективной терапии значительно улучшает нефрологический прогноз. Цель исследования. Определить значение иммуногистохимического метода для диагностики синдрома Альпорта. Материал и методы. Обобщены клинико-лабораторные и морфологические данные 35 пациентов с подозрением на синдром Альпорта (возраст 13 [11; 16] лет; 18 мальчиков и 17 девочек), обследованных в отделе нефрологии в 2013–2019 гг. Исследование почечной ткани включало световую, иммунофлюоресцентную, электронную микроскопию биоптата почки, определение экспрессии цепей α1, α3 и α5 коллагена IV типа в почечных клубочках иммуногистохимическим методом; генетическое обследование было проведено 26 пациентам. Дети были разделены на группы в зависимости от гломерулярной экспрессии цепи α5 коллагена IV типа: норма (1-я группа, n=18), снижена (2-я группа, n=4), отрицательная (3-я группа, n=13). Результаты. Нарушение экспрессии цепи α5 было выявлено у ¾ (q=0,78) пациентов с генетически подтвержденным синдромом Альпорта и практически у всех детей с Х-сцепленным вариантом заболевания (q=0,94). Результаты. На основе генетического анализа синдром Альпорта подтвержден у ¼ детей 1-й группы (дети с гетерозиготными вариантами генов COL4A3, COL4A5) и у всех детей 2-й и 3-й групп (варианты COL4A5). Чувствительность/специфичность иммуногистохимического исследования для диагностики синдрома Альпорта составила 78%/100%, электронной микроскопии – 93%/87%. Прогностическая значимость положительного/отрицательного результата иммуногистохимического исследования составила 100%/66%, электронной микроскопии – 95%/88% по сравнению с 100%/88% при сочетанном использовании двух методов. Заключение. Определение экспрессии цепи α5 коллагена IV типа в клубочках почек имеет самостоятельное диагностическое значение, однако уступает электронной микроскопии при гетерозиготных вариантах синдрома Альпорта. Высокая специфичность иммуногистохимического метода позволяет подтвердить синдром Альпорта в случае изменения экспрессии цепи α5 коллагена IV типа в клубочках почек.</p></abstract><trans-abstract xml:lang="en"><p>The Alport’s syndrome is the hereditary multisystem disease characterized by the development of the progressive nephropathy. The early diagnosis and subsequent prescription of nephroprotective therapy improves significantly the nephrological prognosis. Purpose of the Study. Determine the value of the immunohistochemical method for the Alport’s syndrome diagnosis. Material and methods. The clinical, laboratory and morphological data of 35 patients with suspected Alport’s syndrome (13 years of age [11; 16]; 18 boys and 17 girls) examined in the Nephrology Department in 2013–2019 were summarized. The study of the renal tissue included the light, immunofluorescence, electron microscopy of the kidney biopsy sample, determination of the expression of α1, α3 and α5 chains of type IV collagen in the renal glomeruli using the immunohistochemical method; the genetic testing was carried out for 26 patients. The children were divided into groups depending on the glomerular expression of α5 chain of type IV collagen: normal (group 1, n=18), decreased (group 2, n=4), negative (group 3, n=13). Results are as the following: The disorder of the expression of α5 chain was detected in ¾ (q = 0.78) patients with genetically confirmed Alport’s syndrome and in almost all children with the X-linked variant of the disease (q = 0.94). Results. Based on the genetic testing, the Alport’s syndrome was confirmed in ¼ of the children of the 1st group (the children with the heterozygous variants of COL4A3, COL4A5 genes) and in all children of the 2nd and 3rd groups (COL4A5 variants). The sensitivity/ specificity of the immunohistochemical study for the Alport’s syndrome diagnosis was 78% /100%, that of the electron microscopy – 93% /87%. The predictive value of the positive/negative result of the immunohistochemical study was 100% /66%, that of the electron microscopy – 95% / 88% compared with 100% / 88% with the combine use of two methods. Conclusion. The determination of the expression of α5 chain of type IV collagen in the renal glomeruli has the independent diagnostic value, but it is inferior to the electron microscopy in the heterozygous variants of the Alport’s syndrome. The high specificity of the immunohistochemical method makes it possible to confirm the Alport’s syndrome in the case of the change in the expression of α5 chain of type IV collagen in the renal glomeruli.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>патология почек</kwd><kwd>синдром Альпорта</kwd><kwd>цепь α5 коллагена IV типа</kwd><kwd>базальные мембраны клубочков почек</kwd><kwd>иммуногистохимическое исследование</kwd><kwd>иммунофлюоресценция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>renal pathology</kwd><kwd>Alport’s syndrome</kwd><kwd>α5 chain of type IV collagen</kwd><kwd>glomerular basement membranes</kwd><kwd>immunohistochemical study</kwd><kwd>immunofluorescence</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">Gross O., Licht C., Anders H., Hoppe B., Beck B., Tönshoff B. et al. 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