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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">nid</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология и диализ</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology and Dialysis</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1680-4422</issn><issn pub-type="epub">2618-9801</issn><publisher><publisher-name>Российское диализное общество</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.28996/2618-9801-2024-2-121-130</article-id><article-id custom-type="elpub" pub-id-type="custom">nid-163</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>Сравнительный анализ изменений в системе комплемента при иммуноглобулин-опосредованных и комплемент-опосредованных гломерулопатиях с морфологическим профилем мембранопролиферативного гломерулонефрита</article-title><trans-title-group xml:lang="en"><trans-title>Comparative analysis of changes in the complement system in immunoglobulin-mediated and complement-mediated glomerulopathies with the morphological profile of membranoproliferative glomerulonephritis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7041-3391</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юрова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yurova</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">val84-05@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/0000-0002-4275-0315</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козловская</surname><given-names>Н. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlovskaya</surname><given-names>N. L.</given-names></name></name-alternatives><email xlink:type="simple">nkozlovskaya@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/0000-0001-6265-4091</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боброва</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bobrova</surname><given-names>L. A.</given-names></name></name-alternatives><email xlink:type="simple">mrlee2005@yandex.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>Серова</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Serova</surname><given-names>A. G.</given-names></name></name-alternatives><email xlink:type="simple">mmaanna@yandex.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>Козлов</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>L. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0284-3787</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андина</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Andina</surname><given-names>S. S.</given-names></name></name-alternatives><email xlink:type="simple">andinasvetlana@rambler.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8927-5841</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демьянова</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Demyanova</surname><given-names>K. A.</given-names></name></name-alternatives><email xlink:type="simple">ksedem@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО Российский университет дружбы народов имени Патриса Лумумбы; ГБУЗ «ГКБ им. А.К. Ерамишанцева ДЗМ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>RUDN University of Russia; A.K. Eramishancev City Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФБУН МНИИЭМ им. Г.Н. Габричевского Роспотребнадзора</institution><country>Россия</country></aff><aff xml:lang="en"><institution>G.N. Gabrichevsky Research Institute for Epidemiology and Microbiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2024</year></pub-date><volume>26</volume><issue>2</issue><fpage>121</fpage><lpage>130</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юрова В.А., Козловская Н.Л., Боброва Л.А., Серова А.Г., Козлов Л.В., Андина С.С., Демьянова К.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Юрова В.А., Козловская Н.Л., Боброва Л.А., Серова А.Г., Козлов Л.В., Андина С.С., Демьянова К.А.</copyright-holder><copyright-holder xml:lang="en">Yurova V.A., Kozlovskaya N.L., Bobrova L.A., Serova A.G., Kozlov L.V., Andina S.S., Demyanova K.A.</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.nephro.ru/jour/article/view/163">https://journal.nephro.ru/jour/article/view/163</self-uri><abstract><p>Цель: cравнить изменения основных показателей системы комплемента при идиопатическом мембранопролиферативном гломерулонефрите (иМПГН), волчаночном нефрите IV класса (ВН IVкл.), С3-гломерулопатии (С3-ГП) и атипичном гемолитико-уремическом синдроме (аГУС). Методы: в исследование вошло 8 пациентов с С3-ГП (1 группа), 13 пациентов с иМПГН (2 группа), 14 - с ВН IV кл. (3 группа), и 8 - с аГУС в стадии ремиссии (4 группа). У всех пациентов исследовано содержание в крови компонентов системы комплемента: С3, С4, С3а, С5а, фактора H (CFH) и фактора B (CFВ), мембраноатакующего комплекса (МАК), антител к С3b (анти-C3b-АТ) - компоненту С3-конвертазы альтернативного пути комплемента (АПК), уровень общей гемолитической активности (СН50) и содержание фактора D (CFD) в моче. Результаты: во всех группах уровни С3 и СН50 не выходили за пределы референсного диапазона, однако в группе С3-ГП они находились у нижней границы, а уровень С3 был значимо ниже, чем в группе иМПГН и аГУС (р=0,03 и р=0,003). Повышенный уровень CFB выявлен во всех группах, но в группе С3-ГП он оказался значимо ниже, чем в группе аГУС (р=0,010). Уровни С3а были повышены в группах С3-ГП и аГУС, выявлено значимое различие между группами С3-ГП и иМПГН (р=0,003), С3-ГП и ВН IVкл. (р=0,041). Уровень МАК был повышен во всех группах, однако максимальные значения, более чем в 10 раз превышающие референсные, наблюдались в группе С3-ГП и достигали статистической значимости с группами 2, 3 и 4. В группе С3-ГП выявлена сильная обратная связь между С3 и МАК (r=-0,826, p=0,011), а в группе аГУС - прямая (r=0,714,p=0,047). Определяется сильная отрицательная связь между СН50 и МАК (r=-0,949, p=0,05) и очень сильная прямая - между СН50 и С3 (r=1,000, p=0,01) в группе С3-ГП. Основные выводы: признаки активации АПК выявлены при обоих вариантах комплемент-опосредованной нефропатии, вне зависимости от стадии заболевания. При С3-ГП активация АПК более выражена, чем при аГУС после купирования острого эпизода ТМА. При иммунокомплексных МПГН изменения менее выражены и свидетельствуют об активации комплемента по классическому пути.</p></abstract><trans-abstract xml:lang="en"><p>Aim: to compare changes in the main parameters of the complement system in idiopathic membranoproliferative glomerulonephritis (iMPGN), class IV lupus nephritis (LN IV), C3-glomerulopathy (C3-GP) and atypical hemolytic-uremic syndrome (aHUS). Methods: The study included 8 patients with C3-GP (group 1), 13 patients with iMPGN (group 2), 14 with class IV LN (group 3), and 8 with aHUS in remission (group 4). In all patients, the blood levels of complement system components were examined: C3, C4, C3a, C5a, factor H(CFH) and factor B(CFB), membrane attack complex (MAC), antibodies to C3b(anti-C3b-AT) - a component of alternative complement pathway(AСP) C3 convertase, the level of total hemolytic activity (CH50) and the content of factor D(CFD) in the urine. Results: in all groups, C3 and CH50 levels did not go beyond the reference range, however, in the C3-GP group they were at the lower limit, and the C3 level was significantly lower than in the iMPGN and aHUS groups (p=0.03 and p=0.003). An increased level of CFB was detected in all groups, but in the C3-GP it was significantly lower than in the aHUS (p=0.010). C3a levels were increased in the C3-GP and aHUS groups, and a significant difference was found between the C3-GP and iMPGN groups (p=0.003), C3-GP and class IV LN (p=0.041). MAC levels were increased in all groups, however, maximum values, more than 10 times higher than the reference values, were observed in the C3-GP group and reached statistical significance with groups 2, 3, and 4. In the C3-GP group, a strong inverse relationship was revealed between C3 and MAC (r=-0.826, p=0.011), and in the aHUS group - a direct one (r=0.714, p=0.047). There was a strong negative relationship between CH50 and MAC (r=-0.949, p=0.05) and a very strong correlation between CH50 and C3 (r=1.000, p=0.01) in the C3-GP group. Main conclusions: signs of ACP activation were identified in both types of complement-mediated nephropathy, regardless of the stage of disease. In C3-GP, ACP activation is more pronounced than in aHUS after the acute episode of TMA is relieved. With immune complex MPGN, the changes are less pronounced and indicate an activation of complement along the classical pathway.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>альтернативный путь комплемента</kwd><kwd>МПГН</kwd><kwd>С3-гломерулопатия</kwd><kwd>аГУС</kwd><kwd>alternative complement pathway</kwd><kwd>MPGN</kwd><kwd>C3 glomerulopathy</kwd><kwd>aHUS</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">Noris M., Remuzzi G. 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