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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">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1814-6023-2018-15-2-160-169</article-id><article-id custom-type="elpub" pub-id-type="custom">vestim-429</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>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>IGA НЕФРОПАТИЯ С ЭКСТРАКАПИЛЛЯРНОЙ ПРОЛИФЕРАЦИЕЙ  В КЛУБОЧКАХ ПОЧЕК У ВЗРОСЛЫХ</article-title><trans-title-group xml:lang="en"><trans-title>IGA NEPHROPATHY WITH GLOMERULAR EXTRACAPILLARY PROLIFERATION IN ADULTS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitrieva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитриева Маргарита Владимировна – врач-патологоанатом.</p><p>ул. Семашко, 8/8, 220045, г. Минск.</p></bio><bio xml:lang="en"><p>Margarita V. Dmitrieva – Pathologist. </p><p>8/8, Semashko str., 220045, Minsk.</p></bio><email xlink:type="simple">mvdmitrieva@inbox.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>Летковская</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Letkovskaya</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Летковская Татьяна Анатольевна – канд. мед. наук, доцент, заведующий кафедрой. </p><p>пр. Дзержинско- го, 83, 220116, г. Минск.</p></bio><bio xml:lang="en"><p>Тatyana А. Letkovskaya – Ph. D. (Med.), Assistant Professor, Head of the Department. </p><p>83, Dzerzhinski Ave., 220116, Minsk.</p></bio><email xlink:type="simple">taletkovskaya@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комиссаров</surname><given-names>К. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Komissarov</surname><given-names>K. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Комиссаров Кирилл Сергеевич – канд. мед. наук, доцент. </p><p>ул. П. Бровки, 3, 220013, г. Минск.</p></bio><bio xml:lang="en"><p>Kirill S. Komissarov – Ph. D. (Med.), Assistant Professor.</p><p>3, P. Brovki Str., 220013, Minsk.</p></bio><email xlink:type="simple">kirill_ka@tut.by</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Городское клиническое патологоанатомическое бюро.</institution></aff><aff xml:lang="en"><institution>City Clinical Pathologyс Bureau.</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный медицинский университет.</institution></aff><aff xml:lang="en"><institution>Belarusian State Medical University.</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Белорусская медицинская академия последипломного образования.</institution></aff><aff xml:lang="en"><institution>Belarusian Medical Academy of Postgraduate Education</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>24</day><month>06</month><year>2018</year></pub-date><volume>15</volume><issue>2</issue><fpage>160</fpage><lpage>169</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дмитриева М.В., Летковская Т.А., Комиссаров К.С., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Дмитриева М.В., Летковская Т.А., Комиссаров К.С.</copyright-holder><copyright-holder xml:lang="en">Dmitrieva M.V., Letkovskaya T.A., Komissarov K.S.</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://vestimed.belnauka.by/jour/article/view/429">https://vestimed.belnauka.by/jour/article/view/429</self-uri><abstract><p>Развитие экстракапиллярной пролиферации (ЭП) в клубочках почек при IgA нефропатии (IgAН)  является  одним  из  неблагоприятных  прогностических  признаков,  способствующих  в  ряде  случаев  быстрому  прогрессированию почечной недостаточности.  Цель исследования – оценить влияние ЭП и степени ее выраженности на клинико-морфологические показатели  и прогноз при IgAН. Проанализировано 206 случаев IgAН, диагностированных с помощью нефробиопсии с использованием световой и люминесцентной микроскопии, согласно Оксфорд ской классификации. Количественная оценка полулуний  проведена путем вычисления процента поврежденных клубочков и индекса. Выявленная в 64 (31,1 %) случаях ЭП  была связана с более частыми депозитами IgA и С3 в клубочковых базальных мембранах. В большинстве (59,4 %)  случаев ЭП затрагивала менее четверти клубочков, в то время как поражение более половины гломерул имело место  только в единичных (6,3 %) случаях. Клинические проявления случаев IgAН с полулуниями в подавляющем  большинстве (71,9 %) случаев характеризовались нефритическим синдромом, в единичных (3,1 %) – быстро прогрессирующим течением, не ассоциированным с наличием более половины клубочков с ЭП в биоптате. ЭП в клубочках  у каждого четвертого пациента проявлялась изолированным мочевым синдромом. Индекс полулуний 0,75 и выше  был ассоциирован с нарушением функции почек, артериальной гипертензией и большей выраженностью склеротических изменений клубочков и интерстиция. Прогрессирование IgAН с ЭП в виде снижения скорости клубочковой  фильтрации на 50 % либо начала диализотерапии наблюдалось в 12,5 % случаев и сочеталось с высоким уровнем  протеинурии и выраженным интерстициальным фиброзом в нефробиоптате. Анализ показателя выживаемости  продемонстрировал сохранение функции почек в течение 1 года в 87 % случаев, в течение 3 лет – в 84, в течение 5 лет – в 67 %.</p></abstract><trans-abstract xml:lang="en"><p>Glomerular extracapillary proliferation in IgA nephropathy is one of the unfavorable prognostic signs that in  some cases, contributes to a rapid progression of the renal failure.  The aim of the study was to assess the effect of extracapillary proliferation and its degree on clinical and morphological  parameters and the prognosis of IgA nephropathy.  Two hundred and six cases of IgA nephropathy diagnosed on kidney biopsy with light and luminescence microscopy using  the Oxford classification were analyzed. Quantitative evaluation of the crescents was done by calculating their percentage and  crescent score. Extracapillary proliferation was detected in 64 cases (31.1 %) and was associated with more frequent deposits  of IgA and C3 in the glomerular basal membranes. In most cases (59.4 %), extracapillary proliferation affects less than  a quarter of the glomeruli, while more than half of the glomerulus lesions develops only in single cases (6.3 %). Clinical  manifestations of cases of IgA nephropathy with crescents were overwhelmingly characterized by nephritic syndrome  (71.9 %) in single cases (3.1 %) there was a rapidly progressive lesion, not associated with the presence of more than half  of crescentic glomeruli in the biopsy. Glomerular extracapillary proliferation in every fourth patient was accompanied by  isolated urinary abnormalities. The crescent score of 0.75 and more, associated with impaired renal function, revealed more  frequently  hypertension  and  more  pronounced  sclerotic  glomerular  and  interstitial  changes.  The  progression  of  IgA  nephropathy with extracapillary proliferation in the form of reduction in glomerular filtration rate by 50 % or the onset  of dialysis (12.5 %) was combined with a high level of proteinuria and marked interstitial fibrosis in the biopsy. The kidney  function survival analysis revealed a one-year survival in 87 %, 3 years – in 84 and 5 years – in 67 % of cases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd> IgA нефропатия</kwd><kwd> нефробиопсия</kwd><kwd> полулуния</kwd><kwd> клинико-морфологические сопоставления</kwd></kwd-group><kwd-group xml:lang="en"><kwd>IgA nephropathy</kwd><kwd> kidney biopsy</kwd><kwd> crescents</kwd><kwd> clinical and morphological comparisons</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">Silva’s diagnostic renal pathology / ed. : X. J. Zhou [et al.]. – 2nd ed. – Cambridge : Cambridge Univ. Press, 2009. – 624 p.</mixed-citation><mixed-citation xml:lang="en">Zhou X. J., Laszik Z., Nadasdy T., D’Agati V. D., Silva F. G. (eds.). Silva’s diagnostic renal pathology. 2nd ed. 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