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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">nefr</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology (Saint-Petersburg)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-6274</issn><issn pub-type="epub">2541-9439</issn><publisher><publisher-name>Pavlov First Saint-Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36485/1561-6274-2022-26-4-74-79</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-2162</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. КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES. CLINICAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>IgA-нефропатия у детей с синдромом Альпорта</article-title><trans-title-group xml:lang="en"><trans-title>IgA-nephropathy in children with alport 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, канд. мед. наук, ведущий научный сотрудник</p><p>отдел наследственных и приобретенных болезней почек им. профессора М.С. Игнатовой</p><p>125412</p><p>ул.Талдомская, д. 2</p><p>тел.: (495) 4832183</p></bio><bio xml:lang="en"><p> Marina E. Aksenova, Leading Researcher, MD, PhD</p><p>Nephrology department</p><p>125412</p><p>Taldomskaya st, 2</p><p>Moscow</p><p>tel.: (495)4832183</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/0000-0002-0402-8348</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Столяревич</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Stolyarevich</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Столяревич Екатерина Сергеевна, проф., д-р мед. наук</p><p>патологоанатомическое отделение</p><p>ул. Пехотная, д. 3</p><p>3123182</p><p>Москва</p><p>тел.: (499)1962011</p></bio><bio xml:lang="en"><p>Ekaterina S. Stolyarevich, Prof. MD, PhD, DMedSci</p><p>pathoanatomical department</p><p>123182</p><p>Pehotnaya st, 3, build</p><p>Moscow</p><p>tel.: (499)1962011</p></bio><email xlink:type="simple">stolyarevich@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/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-р мед. наук</p><p>344015</p><p>ул. Благодатная, д. 170А</p><p>г. Ростов-на-Дону</p><p>тел.: (863)2220383</p></bio><bio xml:lang="en"><p>Paricia E. Povilaitite MD, PhD, DMedSci</p><p>344015</p><p>Blagodatnaya st., 170A</p><p>Rostov-on-Don</p><p>tel.: (863)2220383</p></bio><email xlink:type="simple">ppovilaitite@ropab.net</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский клинический институт педиатрии имени академика Ю.Е.Вельтищева, Российский национальный исследовательский медицинский университет имени Н. И. Пирогова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Y.Veltischev Research Clinical Institute for Pediatrics, Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Городская клиническая больница №52</institution><country>Россия</country></aff><aff xml:lang="en"><institution>City Clinical Hospital №52</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Ростовское областное паталогоанатомическое 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>2022</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2022</year></pub-date><volume>26</volume><issue>4</issue><fpage>74</fpage><lpage>79</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Аксенова М.Е., Столяревич Е.С., Повилайтите П.Э., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Аксенова М.Е., Столяревич Е.С., Повилайтите П.Э.</copyright-holder><copyright-holder xml:lang="en">Aksenova M.E., Stolyarevich E.S., Povilaitite P.E.</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://journal.nephrolog.ru/jour/article/view/2162">https://journal.nephrolog.ru/jour/article/view/2162</self-uri><abstract><p>ВВЕДЕНИЕ. Внедрение генетических методов исследования в клиническую практику показало, что патогенные варианты в генах COL4A3/COL4A4/COL4A5, ассоциированные с синдромом Альпорта (СА), выявляются в 10 и 20 % спорадических и семейных случаев IgA-нефропатии соответственно, что позволило предположить взаимосвязь между двумя заболеваниями. ЦЕЛЬ: определить частоту и особенности течения IgA-нефропатии у детей с СА. ПАЦИЕНТЫ И МЕТОДЫ. Одноцентровое ретроспективное пилотное исследование включало 102 пациента с генетически и/или морфологически подтвержденным СА в возрасте 2–18 лет при наличии данных морфологического исследования почечной ткани. Группу сравнения составили дети 2–18 лет с первичной IgA-нефропатией без изменений толщины/структуры гломерулярной базальной мембраны (ГБМ). IgA-нефропатия классифицировалась по шкале MESTC. Пол, возраст, уровень артериального давления (АД), протеинурия (Pr, мг/м2/сут), расчетная скорость клубочковой фильтрации по Шварцу (рСКФ, мл/мин/1,73 м2) оценивались на момент нефробиопсии и при последнем обследовании пациентов. Критерий артериальной гипертензии (АГ): уровень разового стандартизированного по полу/возрасту/росту ребенка систолического и/или диастолического АД≥95 ‰. Pr&gt;100, Pr≥500 и Pr≥1000 мг/м2/сут определялись как протеинурия, протеинурия высокого и нефротического уровня соответственно; рСКФ &lt;90 мл/мин/1,73 м2 – как сниженная. РЕЗУЛЬТАТЫ. IgA-нефропатия выявлена у 3 детей (q=0.03) с СА. Группу сравнения составили дети с IgA-нефропатией (n=25,17М). Исходные возраст пациентов (9±4,2 vs 13±2,7 года), частота АГ (q1=0,66 vs q2=0,28), снижения рСКФ (q1=0,33 vs q2=0,44) уровень рСКФ (91±24 vs 90,8±24 мл/мин/1,73 м2), морфологическая характеристика IgA-нефропатии достоверно не отличались по группам; пациенты с СА чаще имели протеинурию нефротического уровня (q1=1 vs q2=0,32, p=0,023). В динамике (длительность 3,8±1,4 года) группы были сопоставимы по возрасту (12,3±5,2 vs 15±1,8 года), частоте АГ (q1=0,66 vs q2=0,5), уровню рСКФ (87±16 vs 91±13 мл/мин/1,73 м2); дети с CA имели более выраженную протеинурию (800[0;1150] vs 30[10;100] мг/м2/сут, p=0,048), чаще протеинурию высокого уровня (q1=0,66 vs q2=0,06, p=0,006). Наличие СА ассоциировалось с развитием протеинурии нефротического уровня в дебюте (r=0,41, p=0,008) и с протеинурией высокого уровня (r=0,38, p=0,012) в динамике наблюдения. ЗАКЛЮЧЕНИЕ. IgA-нефропатия выявлена у 3 % детей с СА. Наличие вариантов в генах COL4A3/COL4A4/COL4A5 обуславливает развитие выраженной протеинурии в дебюте IgA-нефропатии с сохранением ее в динамике наблюдения, т.е. является фактором риска более тяжелого течения гломерулонефрита. Основные ограничения исследования: малый объем выборки и длительности катамнеза.</p></abstract><trans-abstract xml:lang="en"><p>BACKGROUND. The widespread use of genetic methods in clinical practice has shown that pathogenic variants in COL4A3, COL4A4, COL4A5 genes associated with Alport syndrome (AS) are detected in 10 % of sporadic and in 20 % of familial cases of IgA nephropathy (IgAN), which suggested a relationship between the two diseases. THE AIM was to determine the frequency and characteristics of the course of IgAN in children with AS. PATIENTS AND METHODS. A single-centre retrospective pilot study included 102 patients with AS. The inclusion criteria were: age 2-18 years, genetic and/or morphological confirmation of AS, availability of morphological data of pts. The comparison group included children and adolescents 2-18 years with morphologically confirmed primary IgAN; the exclusion criterion was the presence of AS-specific glomerular basement membrane changes. IgAN was classified according to the MESTC scale. Demographic (gender, age), clinical (arterial hypertension, AH) and laboratory data (proteinuria (Pr, mg/m2/day), (Schwartz eGFR, ml/min/1.73m2) at the time of the biopsy and at the last examination of patients were assessed. Arterial pressure ≥95‰ for sex, age, height was defined as AH. Pr &gt;100 mg/m2/day, Pr≥500 mg/m2/day and Pr&gt;1000 mg/m2/day were defined as proteinuria, high-level proteinuria and nephrotic level proteinuria, respectively. The statistic parametric and nonparametric methods were used ("Statistica 10", StatSoft Russia). RESULTS. IgAN was detected in 3 of 102 children with AS (q=0.03): 2 girls had heterozygous variants in COL4A3 and COL4A4, a boy had X-linked AS. Two patients had nephrotic proteinuria, 1 had SRNS at onset of IgAN. The comparison group included 25 children with IgAN (17M). Baseline patients age (9±4.2 vs 13±2.7 years), frequency of AH (q1=0.66 vs q2=0.28), eGFR decrease (q1=0.33 vs q2=0.44), eGFR level (91±24 vs 90.8±24 ml/ min/1.73 m2), morphological characteristics of IgAN did not differ significantly by groups; patients with AS were more likely to have nephrotic proteinuria (q1=1 vs q2=0.32, p=0.023). At follow-up (3.8±1.4 years), the groups were comparable in age (12.3±5.2 vs 15±1.8 years), AH frequency (q1=0.66 vs q2=0.5), eGFR level (87±16 vs 91±13 ml/min/1.73m2); children with AS had higher grade Pr (800[0;1150] vs 30[10;100] mg/m2/day, p=0.048) and more often had high-level Pr (q1=0.66 vs q2=0.06, p=0.006) at follow-up observation. The AS was associated with the development of nephrotic-level Pr at onset (r=0.41, p=0.008) and with high-level Pr (r=0.38, p=0.012) during follow-up. CONCLUSION. IgAN was detected in 3 % of children with AS. The presence of COL4A3, COL4A4, COL4A5 genes variants is associated with more pronounced proteinuria at the onset of IgAN and its preservation in the follow-up, and may be a risk factor for more severe course glomerulonephritis. The main limitations of the study: small sample size and duration of follow-up.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром Альпорта</kwd><kwd>IgA-нефропатия</kwd><kwd>дети</kwd><kwd>протеинурия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Alport syndrome</kwd><kwd>glomerulonephritis IgA</kwd><kwd>children</kwd><kwd>proteinuria</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">Gast C, Pengelly RJ, Lyon M et al. 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PLoS One 2016;11(12):e0168343. doi: 10.1371/journal.pone.0168343</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
