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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 custom-type="elpub" pub-id-type="custom">nefr-44</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 STUDIES</subject></subj-group></article-categories><title-group><article-title>Нефринурия при нефротическом синдроме у пациентов с ревматоидным артритом</article-title><trans-title-group xml:lang="en"><trans-title>Nephrinuria in patients with nephrotic syndrome secondary to rheumatoid arthritis</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>Оранский</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Oranskiy</surname><given-names>S. P.</given-names></name></name-alternatives><email xlink:type="simple">s_oransky@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>Елисеева</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Yeliseyeva</surname><given-names>L. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Куринная</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurinnaya</surname><given-names>V. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Давыдова</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Davydova</surname><given-names>A. F.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Кубанский государственный медицинский университет</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>Краевая клиническая больница № 1</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>01</day><month>09</month><year>2014</year></pub-date><volume>18</volume><issue>5</issue><fpage>23</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Оранский С.П., Елисеева Л.Н., Куринная В.П., Давыдова А.Ф., 2014</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="ru">Оранский С.П., Елисеева Л.Н., Куринная В.П., Давыдова А.Ф.</copyright-holder><copyright-holder xml:lang="en">Oranskiy S.P., Yeliseyeva L.N., Kurinnaya V.P., Davydova A.F.</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/44">https://journal.nephrolog.ru/jour/article/view/44</self-uri><abstract><p>ЦЕЛЬ ИССЛЕДОВАНИЯ: определение экскреции с мочой нефрина у пациентов с нефротическим синдромом (НС) на фоне ревматоидного артрита (РА). ПАЦИЕНТЫ И МЕТОДЫ. В исследование были включены 50 пациентов (38 женщин, 12 мужчин) с НС на фоне серопозитивного РА. Контрольную группу составили 25 относительно здоровых лиц (19 женщин, 6 мужчин). Нефробиопсия выполнена 36 пациентам (у 20 верифицирован АА-амилоидоз, у 16 - гломерулонефрит). Определение концентрации нефрина в моче выполнено с помощью иммуноферментного анализа. РЕЗУЛЬТАТЫ. Концентрация нефрина в моче в общей когорте пациентов с НС на фоне РА составила 6,9 (3,4; 8,1) нг/ мл по сравнению с показателем в контрольной группе - 3,9 (2,8; 5,7) нг/мл (p=0,01). В этой же группе определена положительная корреляция между уровнями мочевой экскреции нефрина и суточной протеинурии (r = 0,42; p=0,03). У пациентов с морфологически верифицированным НС как при гломерулонефрите, так и при амилоидозе, отмечено превышение концентрации нефрина в моче по сравнению с показателями в контрольной группе 8,8 (6,1; 9,7) (p=0,03) и 5,9 (3,2; 7,3) (p=0,04) нг/мл соответственно. В то же время, уровень продукции нефрина с мочой при амилоидозе оказался более низким по сравнению с данным показателем при гломерулонефрите (p=0,04). ЗАКЛЮЧЕНИЕ. Таким образом, нами впервые определена повышенная нефринурия при различных вариантах нефротического синдрома на фоне РА. Полученные предварительные данные свидетельствуют о развитии нефринурии как при гломерулонефрите, так и при амилоидозе на фоне РА и могут использоваться в клинике для уточнения выраженности морфологического повреждения подоцитов при исследованных вариантах нефропатий.</p></abstract><trans-abstract xml:lang="en"><p>THE AIM: to determine nephrin urine excretion in patients with nephrotic syndrome (NS) associated with rheumatoid arthritis (RA). PATIENTS AND METHODS. We enrolled in the study 50 patients with seropositive RA and NS., the control group was formed from 25 healthy persons. Kidney biopsy was performed in 36 patients (glomerulonephritis was diagnosed in 16 patients, АА-amyloidosis - in 20 patients). RESULTS. Urine nephrin concentration in patients with RA and NS was higher than in the control group: 6.9 (3.4; 8.1) ng/ml 3.9 (2.8; 5.7) ng/ml, p &lt;0,01, respectively. Also, only in the group of patients with RA and NS we find positive correlation between the levels of urinary excretion of nephrin and daily proteinuria (r = 0,42; p = 0,03). Urine nephrin levels in patients of the glomerulonephritis - 8,8 (6,1; 9,7) and amyloidosis groups - 5,9 (3,2; 7,3) ng/ml were higher than in the control group (p=0,03 and p=0,04 respectively). Also urine nephrin level in patients with AA-amyloidosis was low than in glomerulonephritis patients (p=0,04). CONCLUSION. We first determined the increased nefrinuria in different variants of nephrotic syndrome in patients with RA. Obtained preliminary evidence of increased nefrinuria development as in glomerulonephritis and amyloidosis in patients with RA can be used in the clinic to clarify the severity of morphological damage in podocytes damage in patients with different nephropathies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>нефрин</kwd><kwd>нефротический синдром</kwd><kwd>протеинурия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>nephrin</kwd><kwd>nephrotic syndrome</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">Ronconi E., Mazzinghi B., Sagrinati C. et al. The role of podocyte damage in thepathogenesis of glomerulosclerosis and possible repair mechanisms. G Ital Nefrol 2009; 26 (6): 660-669.</mixed-citation><mixed-citation xml:lang="en">Ronconi E., Mazzinghi B., Sagrinati C. et al. 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