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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-IOR-2256</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2256</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>МАТЕРИАЛЫ ФОРУМА "ДНИ ИММУНОЛОГИИ В СПБ" 2021</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ ПОЧЕЧНОЙ ДИСФУНКЦИИ НА УРОВЕНЬ СЫВОРОТОЧНЫХ АНГИОПОЭТИН-ПОДОБНЫХ БЕЛКОВ И АНТИТЕЛ К ФОСФОЛИПИДАМ У БОЛЬНЫХ РЕВМАТОИДНЫМ АРТРИТОМ С МЕТАБОЛИЧЕСКИМ СИНДРОМОМ</article-title><trans-title-group xml:lang="en"><trans-title>INFLUENCE OF RENAL DYSFUNCTION ON THE LEVEL OF SERUM ANGIOPOIETIN-LIKE PROTEINS AND ANTI-PHOSPHOLIPID ANTIBODIES IN PATIENTS WITH RHEUMATOID ARTHRITIS AND METABOLIC 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/0000-0002-0686-4067</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александров</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент кафедры госпитальной терапии, 400138, г. Волгоград, ул. им. Землячки, 76;</p><p>младший научный сотрудник, г. Волгоград</p></bio><bio xml:lang="en"><p>Assistant Professor, Department of Hospital Therapy, 400138, Volgograd, Zemlyachki str., 76;</p><p>Junior Research Associate, Volgograd</p></bio><email xlink:type="simple">alexandrow666@mail.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>Шилова</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shilova</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., доцент, заведующая кафедрой госпитальной терапии,</p><p>г. Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Head, Department of Hospital Therapy,</p><p>Volgograd</p></bio><email xlink:type="simple">ludshilova@mail.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/0000-0002-0686-4067</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., доцент, заведующий лабораторией функциональных методов исследования, ультразвуковой диагностики и восстановительной терапии,</p><p>г. Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Head, Laboratory of Functional Research Methods, Ultrasound Diagnostics and Rehabilitation Therapy,</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@mail.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/0000-0002-0686-4067</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александрова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., старший научный сотрудник,</p><p>г. Волгоград</p></bio><bio xml:lang="en"><p>PhD (Medicine), Senior Research Associate, </p><p>Volgograd</p></bio><email xlink:type="simple">nynel68@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зборовская</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zborovskaya</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, директор,</p><p>г. Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Director, </p><p>Volgograd</p></bio><email xlink:type="simple">ZborovskayaIA@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Волгоградский государственный медицинский университет» Министерства здравоохранения РФ;&#13;
ФГБНУ «Научно-исследовательский институт клинической и экспериментальной ревматологии имени А.Б. Зборовского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University;&#13;
А. Zborovsky Research Institute of Clinical and Experimental Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Волгоградский государственный медицинский университет» Министерства здравоохранения РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт клинической и экспериментальной ревматологии имени А.Б. Зборовского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>А. Zborovsky Research Institute of Clinical and Experimental Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>07</day><month>10</month><year>2021</year></pub-date><volume>23</volume><issue>4</issue><fpage>717</fpage><lpage>724</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Александров В.А., Шилова Л.Н., Александров А.В., Александрова Н.В., Зборовская И.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Александров В.А., Шилова Л.Н., Александров А.В., Александрова Н.В., Зборовская И.А.</copyright-holder><copyright-holder xml:lang="en">Aleksandrov V.A., Shilova L.N., Aleksandrov A.V., Aleksandrova N.V., Zborovskaya I.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://www.mimmun.ru/mimmun/article/view/2256">https://www.mimmun.ru/mimmun/article/view/2256</self-uri><abstract><p>Ревматоидный артрит (РА) является частым фоном для развития почечной патологии. Хроническая болезнь почек (ХБП) определяется более чем у 30% пациентов с РА. Наряду с воспалением и другими факторами прогрессирования основного заболевания развитию почечного поражения при РА способствует наличие метаболического синдрома (МС).</p><p>Цель исследования – оценить взаимосвязь сывороточных концентраций ангиопоэтин-подобных белков (АППБ) и антител к фосфолипидам (аФЛ) с развитием почечной дисфункции у больных РА.</p><p>Было обследовано 158 пациентов с РА (91,8% – женщин и 8,2% – мужчин) в возрасте от 21 до 80 лет и средней длительностью заболевания – 9 (4-15) лет. Преобладали пациенты серопозитивные по ревматоидному фактору и по антителам к циклическому цитруллинированному пептиду, с развернутой клинической стадией и умеренной активностью (3,2 &lt; DAS28 ≤ 5,1) патологического процесса.</p><p>ELISA-тест был использован для количественного определения в сыворотке крови больных РА ангиопоэтин-подобного белка 3-го типа и 4-го типа и антител к фосфолипидам (aФЛ-IgG/IgM) для суммарного выявления антител к кардиолипину, фосфатидилсерину, фосфатидилинозитолу, фосфатидиловой кислоте и комплексу отрицательно заряженного фосфолипида и β2-гликопротеина-I.</p><p>Более половины обследованных больных РА имели расчетную скорость клубочковой фильтрации (рСКФ) в пределах от 89 до 60 мл/мин/1,73 м2 (распределение по стадиям ХБП: С1 – 21,5%; С2 – 58,9%; С3 – 19,6%). Признаки МС (сочетания повышенного АД, повышения уровня триглицеридов и нарушений углеводного обмена на фоне центрального ожирения) были диагностированы у 68 (43%) больных РА.</p><p>Был выполнен многофакторный дисперсионный анализ по сравнению изучаемых показателей (АППБ3, АППБ4, aФЛ) в зависимости от рСКФ в группах больных РА без признаков метаболического синдрома и больных РА с МС. Между больными РА с различной степенью выраженности метаболических нарушений были установлены существенные различия в уровне АППБ3 (F = 8,86, р = 0,0034) и АППБ4 (F = 29,6,р &lt; 0,001), но не aФЛ (p &gt; 0,05). Проведение многофакторного дисперсионного анализа показало достоверное увеличение АППБ4 в сыворотке крови больных РА со сниженной рСКФ (&lt; 89 мл/мин) (F = 18,5, р &lt; 0,001) и выраженными метаболическими изменениями (F = 24,2, р &lt; 0,001). Таким образом, на содержание АППБ4 у больных РА непосредственное влияние оказывали только два фактора (почечная дисфункция и наличие МС), способные более чем в 30% случаев описать изменчивость данного признака. Квадрат множественного коэффициента корреляции (R2 ) в данной модели составил 0,33. АППБ 4-го типа следует рассматривать в роли ключевого фактора, связывающего развитие почечной дисфункции и метаболические изменения, вызванные ревматоидным воспалением. </p></abstract><trans-abstract xml:lang="en"><p>Rheumatoid arthritis (RA) is a frequent background for the development of renal pathology. Chronic kidney disease (CKD) is determined in more than 30% of patients with RA. Along with inflammation and other factors in the progression of the underlying disease, the development of renal damage in RA is facilitated by the presence of metabolic syndrome (MetS).</p><p>The aim of this study is to assess the relationship of serum concentrations of angiopoietin-like proteins (ANGPTL) and antiphospholipid antibodies (aPL) with the development of renal dysfunction in patients with RA.</p><p>We examined 158 patients with RA (91.8% – women and 8.2% – men) aged 21 to 80 years old and an average duration of the disease – 9 (4-15) years. The majority of patients were seropositive for rheumatoid factor and for antibodies to cyclic citrullinated peptide, with an advanced clinical stage and moderate activity (3.2 &lt; DAS28 ≤ 5.1) of the pathological process.</p><p>The ELISA test was used for the quantitative determination of angiopoietin-like protein type 3 and type 4 and antibodies to phospholipids (aРL-IgG/IgM) for total detection of antibodies to cardiolipin, phosphatidylserine, phosphatidylinositol, phosphatidylic acid and a complex of negatively charged phospholipid and β2-glycoprotein-I.</p><p>More than half of the examined RA patients had the calculated glomerular filtration rate (eGFR) ranging from 89 to 60 ml/min/1.73 m2 (allocation by CKD stages: C1 – 21.5%; C2 – 58.9%; C3 – 19.6%). Signs of MetS (a combination of increased blood pressure, increased triglyceride levels and carbohydrate metabolism disorders against the background of central obesity) were diagnosed in 68 (43%) RA patients. Multivariable analysis of variance was performed to compare the studied parameters (ANGPTL3, ANGPTL4, aPL) depending on eGFR in groups of RA patients without signs of metabolic syndrome and RA patients with MetS. Significant differences in the level of ANGPTL3 (F = 8.86, p = 0.0034) and ANGPTL4 (F = 29.6, p &lt; 0.001), but not aPL (p &gt; 0,05) were found between RA patients with varying degrees of severity of metabolic disorders.</p><p>Multivariable analysis of variance showed a significant increase in ANGPTL4 in the blood serum of RA patients with reduced eGFR (&lt; 89 ml/min) (F = 18.5, p &lt; 0.001) and pronounced metabolic changes (F = 24.2, p &lt; 0.001). Thus, only two factors (renal dysfunction and the presence of MetS) had a direct effect on the ANGPTL4 content in RA patients, which could describe the variability of this sign in more than 30% of cases. The squared multiple correlation coefficient (R2 ) in this model was 0.33. ANGPTL type 4 should be considered as a key factor linking the development of renal dysfunction and metabolic changes caused by rheumatoid inflammation. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>почечная дисфункция</kwd><kwd>ангиопоэтин-подобные белки</kwd><kwd>метаболический синдром</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>renal dysfunction</kwd><kwd>angiopoietin-like proteins</kwd><kwd>metabolic syndrome</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to the colleagues of the Department of Rheumatology of the City Clinical Hospital No. 25 (Volgograd) and the colleagues of the Department of Hospital Therapy of Volgograd State Medical University for their help in collecting clinical data.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Akbal N., Aydin K., Tezcan M.E. Metabolic syndrome is not uncommon in treatment-naïve rheumatoid arthritis patients. Neth. J. Med., 2019, Vol. 77, no. 6, pp. 204-209.</mixed-citation><mixed-citation xml:lang="en">Akbal N., Aydin K., Tezcan M.E. Metabolic syndrome is not uncommon in treatment-naïve rheumatoid arthritis patients. Neth. J. Med., 2019, Vol. 77, no. 6, pp. 204-209.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Aleksandrov A., Aleksandrov V., Shilova L. Study of the role of angiopoietin-like protein type 4 in metabolic disorders caused by inflammation in rheumatoid arthritis. Ann. Rheum. Dis., 2020, Vol. 79, Suppl. 1, 1341. doi: 10.1136/annrheumdis-2020-eular.4558.</mixed-citation><mixed-citation xml:lang="en">Aleksandrov A., Aleksandrov V., Shilova L. Study of the role of angiopoietin-like protein type 4 in metabolic disorders caused by inflammation in rheumatoid arthritis. Ann. Rheum. Dis., 2020, Vol. 79, Suppl. 1, 1341. doi: 10.1136/annrheumdis-2020-eular.4558.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Bećarević M., Čabarkapa V., Đerić M., Ignjatović S. Antiphospholipid Antibodies and Renal Impairment Parameters in Diabetic Nephropathy: Preliminary Data. Clin. Appl. Thromb. Hemost., 2017, Vol. 23, no. 4, pp. 379-383.</mixed-citation><mixed-citation xml:lang="en">Bećarević M., Čabarkapa V., Đerić M., Ignjatović S. Antiphospholipid Antibodies and Renal Impairment Parameters in Diabetic Nephropathy: Preliminary Data. Clin. Appl. Thromb. Hemost., 2017, Vol. 23, no. 4, pp. 379-383.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Clement L.C., Macé C., Avila-Casado C., Joles J.A., Kersten S., Chugh S.S. Circulating angiopoietin-like 4 links proteinuria with hypertriglyceridemia in nephrotic syndrome. Nat. Med., 2014, Vol. 20, no. 1, pp. 37-46.</mixed-citation><mixed-citation xml:lang="en">Clement L.C., Macé C., Avila-Casado C., Joles J.A., Kersten S., Chugh S.S. Circulating angiopoietin-like 4 links proteinuria with hypertriglyceridemia in nephrotic syndrome. Nat. Med., 2014, Vol. 20, no. 1, pp. 37-46.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Couderc M., Tatar Z., Pereira B., Tiple A., Gilson M., Fautrel B., Pouplin S., Dernis E., Gossec L., GaujouxViala C., Soubrier M., Dougados M. Prevalence of renal impairment in patients with rheumatoid arthritis: results from a cross-sectional multicenter study. Arthritis Care Res. (Hoboken)., 2016, Vol. 68, no. 5, pp. 638-644.</mixed-citation><mixed-citation xml:lang="en">Couderc M., Tatar Z., Pereira B., Tiple A., Gilson M., Fautrel B., Pouplin S., Dernis E., Gossec L., GaujouxViala C., Soubrier M., Dougados M. Prevalence of renal impairment in patients with rheumatoid arthritis: results from a cross-sectional multicenter study. Arthritis Care Res. (Hoboken)., 2016, Vol. 68, no. 5, pp. 638-644.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">El Hasbani G., Viola M., Sciascia S., Taher A.T., Uthman I. Antiphospholipid antibodies in inflammatory and autoimmune rheumatic and musculoskeletal diseases beyond lupus: a systematic review of the available evidence [published online ahead of print, 2021 Jan 9]. Rheumatol. Ther., 2021, 10.1007/s40744-020-00273-w.</mixed-citation><mixed-citation xml:lang="en">El Hasbani G., Viola M., Sciascia S., Taher A.T., Uthman I. Antiphospholipid antibodies in inflammatory and autoimmune rheumatic and musculoskeletal diseases beyond lupus: a systematic review of the available evidence [published online ahead of print, 2021 Jan 9]. Rheumatol. Ther., 2021, 10.1007/s40744-020-00273-w.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ferraz-Amaro I., González-Juanatey C., López-Mejias R., Riancho-Zarrabeitia L., González-Gay M.A. Metabolic syndrome in rheumatoid arthritis. Mediators Inflamm., 2013, Vol. 2013, 710928. doi:10.1155/2013/710928.</mixed-citation><mixed-citation xml:lang="en">Ferraz-Amaro I., González-Juanatey C., López-Mejias R., Riancho-Zarrabeitia L., González-Gay M.A. Metabolic syndrome in rheumatoid arthritis. Mediators Inflamm., 2013, Vol. 2013, 710928. doi:10.1155/2013/710928.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Jeleniewicz R., Majdan M., Targońska-Stępniak B., Dryglewska M. Prevalence of antiphospholipid antibodies in rheumatoid arthritis patients and relationship with disease activity. Pol. Arch. Med. Wewn., 2012, Vol. 122, no. 10, pp. 480-486.</mixed-citation><mixed-citation xml:lang="en">Jeleniewicz R., Majdan M., Targońska-Stępniak B., Dryglewska M. Prevalence of antiphospholipid antibodies in rheumatoid arthritis patients and relationship with disease activity. Pol. Arch. Med. Wewn., 2012, Vol. 122, no. 10, pp. 480-486.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Hallajzadeh J., Safiri S., Mansournia M.A. Metabolic syndrome and its components among rheumatoid arthritis patients: A comprehensive updated systematic review and meta-analysis. PLoS One, 2017, Vol. 12, no. 3, e0170361. doi:10.1371/journal.pone.0170361.</mixed-citation><mixed-citation xml:lang="en">Hallajzadeh J., Safiri S., Mansournia M.A. Metabolic syndrome and its components among rheumatoid arthritis patients: A comprehensive updated systematic review and meta-analysis. PLoS One, 2017, Vol. 12, no. 3, e0170361. doi:10.1371/journal.pone.0170361.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Kochi M., Kohagura K., Shiohira Y., Iseki K., Ohya Y. Inflammation as a Risk of Developing Chronic Kidney Disease in Rheumatoid Arthritis. PLoS One, 2016, Vol. 11, no. 8, e0160225. doi:10.1371/journal.pone.0160225.</mixed-citation><mixed-citation xml:lang="en">Kochi M., Kohagura K., Shiohira Y., Iseki K., Ohya Y. Inflammation as a Risk of Developing Chronic Kidney Disease in Rheumatoid Arthritis. PLoS One, 2016, Vol. 11, no. 8, e0160225. doi:10.1371/journal.pone.0160225.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Masuko K. Angiopoietin-like 4: a molecular link between insulin resistance and rheumatoid arthritis. J. Orthop. Res., 2017, Vol. 35, no. 5, pp. 939-943.</mixed-citation><mixed-citation xml:lang="en">Masuko K. Angiopoietin-like 4: a molecular link between insulin resistance and rheumatoid arthritis. J. Orthop. Res., 2017, Vol. 35, no. 5, pp. 939-943.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Nzerue C.M., Hewan-Lowe K., Pierangeli S., Harris E.N. “Black swan in the kidney”: renal involvement in the antiphospholipid antibody syndrome. Kidney Int., 2002, Vol. 62, no. 3, pp. 733-744.</mixed-citation><mixed-citation xml:lang="en">Nzerue C.M., Hewan-Lowe K., Pierangeli S., Harris E.N. “Black swan in the kidney”: renal involvement in the antiphospholipid antibody syndrome. Kidney Int., 2002, Vol. 62, no. 3, pp. 733-744.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Olech E., Merrill J.T. The prevalence and clinical significance of antiphospholipid antibodies in rheumatoid arthritis. Curr. Rheumatol. Rep., 2006, Vol. 8, pp. 100-108.</mixed-citation><mixed-citation xml:lang="en">Olech E., Merrill J.T. The prevalence and clinical significance of antiphospholipid antibodies in rheumatoid arthritis. Curr. Rheumatol. Rep., 2006, Vol. 8, pp. 100-108.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Oranskiy S.P., Yeliseyeva L.N., Kurinnaya V.P., Davydova A.F. Kidney injury in rheumatoid arthritis: relationship with cardiovascular risk factors. Nephrology (St. Petersburg), 2017, Vol. 21, no. 5, pp. 42-47. (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Oranskiy S.P., Yeliseyeva L.N., Kurinnaya V.P., Davydova A.F. Kidney injury in rheumatoid arthritis: relationship with cardiovascular risk factors. Nephrology (St. Petersburg), 2017, Vol. 21, no. 5, pp. 42-47. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Ponticelli C., Doria A., Moroni G. Renal disorders in rheumatologic diseases: the spectrum is changing (part 2. Arthridides) [published online ahead of print, 2020 Jun 16]. J. Nephrol., 2020, 10.1007/s40620-020-00776-3. doi: 10.1007/s40620-020-00776-3.</mixed-citation><mixed-citation xml:lang="en">Ponticelli C., Doria A., Moroni G. Renal disorders in rheumatologic diseases: the spectrum is changing (part 2. Arthridides) [published online ahead of print, 2020 Jun 16]. J. Nephrol., 2020, 10.1007/s40620-020-00776-3. doi: 10.1007/s40620-020-00776-3.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Yusuf H.R., Hooper W.C., Beckman M.G., Zhang Q.C., Tsai J., Ortel T.L. Risk of venous thromboembolism among hospitalizations of adults with selected autoimmune diseases. J. Thromb. Thrombolysis, 2014, Vol. 38, no. 3, pp. 306-313.</mixed-citation><mixed-citation xml:lang="en">Yusuf H.R., Hooper W.C., Beckman M.G., Zhang Q.C., Tsai J., Ortel T.L. Risk of venous thromboembolism among hospitalizations of adults with selected autoimmune diseases. J. Thromb. Thrombolysis, 2014, Vol. 38, no. 3, pp. 306-313.</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>
