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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">rsp</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-практическая ревматология</journal-title><trans-title-group xml:lang="en"><trans-title>Rheumatology Science and Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1995-4484</issn><issn pub-type="epub">1995-4492</issn><publisher><publisher-name>IMA-PRESS, LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/1995-4484-2020-48-54</article-id><article-id custom-type="elpub" pub-id-type="custom">rsp-2843</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 ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Сравнительная характеристика основных фенотипов системной склеродермии</article-title><trans-title-group xml:lang="en"><trans-title>Comparative characteristics of the main phenotypes of systemic sclerosis</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>Шаяхметова</surname><given-names>Р. У.</given-names></name><name name-style="western" xml:lang="en"><surname>Shayakhmetova</surname><given-names>R. U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рушана Ульфатовна Шаяхметова</p><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>Rushana Shayakhmetova</p><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><email xlink:type="simple">rushick@rambler.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>Ананьева</surname><given-names>Л. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ananyeva</surname><given-names>L. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Старовойтова</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Starovoitova</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Десинова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Desinova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Конева</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Koneva</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овсянникова</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovsyannikova</surname><given-names>O. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гарзанова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Garzanova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черкасова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherkasova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алекперов</surname><given-names>Р. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekperov</surname><given-names>R. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, Москва, Каширское шоссе, 34А</p></bio><bio xml:lang="en"><p>34A, Kashirskoe Shosse, Moscow 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Научноисследовательский институт ревматологии им. В.А. Насоновой</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V.A. Nasonova Research Institute of Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2020</year></pub-date><volume>58</volume><issue>1</issue><fpage>48</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шаяхметова Р.У., Ананьева Л.П., Старовойтова М.Н., Десинова О.В., Конева О.А., Овсянникова О.Б., Гарзанова Л.А., Черкасова М.В., Алекперов Р.Т., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Шаяхметова Р.У., Ананьева Л.П., Старовойтова М.Н., Десинова О.В., Конева О.А., Овсянникова О.Б., Гарзанова Л.А., Черкасова М.В., Алекперов Р.Т.</copyright-holder><copyright-holder xml:lang="en">Shayakhmetova R.U., Ananyeva L.P., Starovoitova M.N., Desinova O.V., Koneva O.A., Ovsyannikova O.B., Garzanova L.A., Cherkasova M.V., Alekperov R.T.</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://rsp.mediar-press.net/rsp/article/view/2843">https://rsp.mediar-press.net/rsp/article/view/2843</self-uri><abstract><p>Различные клинико-иммунологические фенотипы системной склеродермии (ССД) различаются по частоте и выраженности проявлений заболевания, прогрессированию поражения внутренних органов и прогнозу. Частота выявления антител к рибонуклеопротеину (анти-ШРНП) при ССД колеблется от 5 до 30%. Они встречаются при различных ревматических заболеваниях (ССД, системной красной волчанке, ревматоидном артрите, полимиозите, синдроме Шегрена) и ассоциируются с более благоприятным течением, хорошим ответом на лечение (в частности, на глюкокортикоиды), хорошим прогнозом. При ССД клинико-лабораторные ассоциации анти-ШРНП изучены недостаточно.</p><p>Цель исследования — сравнить клинико-лабораторные и инструментальные данные у больных ССД, позитивных по анти-ШРНП, антителам к топоизомеразе-I (анти-8е170) и антицентромерным антителам (АЦА).</p><sec><title>Материал и методы</title><p>Материал и методы. Из общей базы данных больных, удовлетворяющих критериям ССД (ACR/EULAR 2013), наблюдаемых в ФГБНУ НИИР им. В.А. Насоновой в период с 2012 по 2017 г., в основную группу было отобрано 65 пациентов, позитивных по анти-ШРНП (I группа). В группы сравнения были включены 50 больных ССД, позитивных по анти-8е170 (II группа), и 50 пациентов, позитивных по АЦА (III группа). У больных групп сравнения была подтверждена негативность по анти-ШРНП.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. У большинства больных I и III групп были лимитированная форма (88 и 94%) и хроническое течение заболевания (82 и 94% соответственно), в то время как для больных II группы было характерно острое и подострое течение (52%) и у них преобладала диффузная форма заболевания (58%). Все больные ССД имели повышение уровня антинуклеарного фактора. Особенностью группы, позитивной по анти-ШРНП, явилось преобладание лимитированной формы заболевания с минимальным поражением кожи, в сочетании с более частым вовлечением костно-мышечной системы (поражение суставов у 65% и мышц у 43% больных), а также высокой частотой поражения внутренних органов (в частности, легких, сердца и желудочно-кишечного тракта). Для больных этой группы были характерны высокая воспалительная и иммунологическая активность, гематологические нарушения (гипокомплементемия у 15% и лейкопения у 14%). Синдром Шегрена выявлен у трети из этих больных.</p></sec><sec><title>Заключение</title><p>Заключение. Дальнейшее изучение позитивного по анти-ШРНП варианта ССД позволит составить алгоритм ведения и более четко определить риски и прогноз заболевания для данной группы больных.</p></sec></abstract><trans-abstract xml:lang="en"><p>Various clinical and immunological phenotypes of systemic sclerosis (SS) differ in the frequency and severity of manifestations of the disease, the progression of damage to internal organs, and prognosis. The detection rate of anti-U1-ribonucleoprotein (RNP) (anti-U1RNP) antibodies in SSD ranges from 5 to 30%. They are found in various rheumatic diseases (SS, systemic lupus erythematosus, rheumatoid arthritis, polymyositis, and Sjo gren’s syndrome) and are associated with a more favorable course, a good response to treatment (in particular, that with glucocorticoids), and a good prognosis. In SS, the clinical and laboratory associations of anti-U1RNP have been insufficiently investigated.</p><sec><title>Objective</title><p>Objective: to compare clinical, laboratory, and instrumental findings in patients with SS positive for anti-U1RNP, anti-topoisomerase-I (anti-Scl70), and anticentromere antibodies (ACA).</p></sec><sec><title>Subjects and methods</title><p>Subjects and methods. Sixty-five anti-U1RNP antibody-positive patients were selected for a study group (Group 1) from the general database of patients who met the 2013 ACR/EULAR criteria for SS and who were followed up at the V.A. Nasonova Research Institute of Rheumatology in 2012 to 2017. The comparison groups included 50 anti-Scl70 antibody-positive patients with SS (Group 2) and 50 ACA-positive ones (Group 3). Anti-U1RNP negativity was confirmed in patients of the comparison groups.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. Most patients in Groups 1 and 3 had the limited type of SS (88 and 94%, respectively) and a chronic course of the disease (82 and 94%) while Group 2 patients showed an acute and subacute course (52%) and predominantly the diffuse type of SS (58%). All the patients with SS had a higher level of antinuclear factor. The feature of the anti-U1RNP positive group was a preponderance of the limited type of the disease with minimal skin damage concurrent with a more frequent involvement of the musculoskeletal system (damages to the joints (65%) and muscles (43%), as well as with the high rate of damage to internal organs (in particular, the lung, heart, and gastrointestinal tract). The patients of this group exhibited high inflammatory and immunological activities, hematological disorders (hypocomplementemia (15%) and leukopenia (14%)). Sjo gren’s syndrome was detected in one-third of these patients.</p></sec><sec><title>Conclusion</title><p>Conclusion. Further study of anti-U1RNP-positive SS will be able to create a management algorithm and to more clearly define the risks and prognosis of the disease for this group of patients.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>системая склеродермия</kwd><kwd>анти-ШРНП</kwd><kwd>аутоантитела</kwd><kwd>фенотипы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>systemic sclerosis</kwd><kwd>anti-U1RNP</kwd><kwd>autoantibodies</kwd><kwd>phenotypes</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">Гусева НГ. Системная склеродермия и псевдосклеродерми-ческие синдромы. Москва: Медицина; 1993 [Guseva NG. Sistemnaya sklerodermiya i psevdosklerodermicheskie sindromy</mixed-citation><mixed-citation xml:lang="en">Guseva NG. Sistemnaya sklerodermiya i psevdosklerodermicheskie sindromy [Systemic scleroderma and pseudoscleroderma syndromes]. Moscow: Meditsina; 1993 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Hamaguchi Y. Autoantibody profiles in systemic sclerosis: Predictive value for clinical evaluation and prognosis. J Dermatol. 2010;37:42-53. doi: 10.1111/j.1346-8138.2009.00762.x</mixed-citation><mixed-citation xml:lang="en">Hamaguchi Y. Autoantibody profiles in systemic sclerosis: Predictive value for clinical evaluation and prognosis. J Dermatol. 2010;37:42-53. doi: 10.1111/j.1346-8138.2009.00762.x</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Старовойтова МН, Десинова ОВ, Конева ОА и др. Профиль аутоантител при системной склеродермии. Научно-практическая ревматология. 2016;54(4):418-23. doi: 10.14412/1995-4484-2016-418-423</mixed-citation><mixed-citation xml:lang="en">Starovoitova MN, Desinova OV, Koneva OA, et al. Profile of autoantibodies in systemic sclerosis. Nauchno-Prakticheskaya Revmatologiya = Rheumatology Science and Practice. 2016;54(4):418-23 (In Russ.). doi: 10.14412/1995-4484-2016-418-423</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Александрова ЕН, Новиков АА, Насонов ЕЛ. Современные подходы к лабораторной диагностике ревматических заболеваний: роль молекулярных и клеточных биомаркеров. Научно-практическая ревматология. 2016;54(3):324-38. doi: 10.14412/1995-4484-2016-324-338</mixed-citation><mixed-citation xml:lang="en">Aleksandrova EN, Novikov AA, Nasonov EL. Current approaches to the laboratory diagnosis of rheumatic diseases: Role of molecular and cellular biomarkers. Nauchno-Prakticheskaya Revmatologiya = Rheumatology Science and Practice. 2016;54(3):324-38 (In Russ.). doi: 10.14412/1995-4484-2016-324-338</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Ананьева ЛП, Александрова ЕН. Аутоантитела при системной склеродермии: спектр, клинические ассоциации и прогностическое значение. Научно-практическая ревматология. 2016;54(1):86-99. doi: 10.14412/1995-4484-2016-86-99</mixed-citation><mixed-citation xml:lang="en">Ananyeva LP, Aleksandrova EN. Autoantibodies in scleroderma systematica: Spectrum, clinical associations, and prognostic value. Nauchno-Prakticheskaya Revmatologiya = Rheumatology Science and Practice. 2016;54(1):86-99 (In Russ.). doi: 10.14412/1995-4484-2016-86-99</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Kuwana M. Circulating Anti-Nuclear Antibodies in Systemic Sclerosis: Utility in Diagnosis and Disease Subsetting. J Nippon MedSch. 2017;84(2):56-63. doi: 10.1272/jnms.84.56</mixed-citation><mixed-citation xml:lang="en">Kuwana M. Circulating Anti-Nuclear Antibodies in Systemic Sclerosis: Utility in Diagnosis and Disease Subsetting. J Nippon MedSch. 2017;84(2):56-63. doi: 10.1272/jnms.84.56</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Hesselstrand R, Scheja A, Shen GQ, et al. The association of antinuclear antibodies with organ involvement and survival in systemic sclerosis. Rheumatology (Oxford). 2003;42:534-40. doi: 10.1093/rheumatology/keg170</mixed-citation><mixed-citation xml:lang="en">Hesselstrand R, Scheja A, Shen GQ, et al. The association of antinuclear antibodies with organ involvement and survival in systemic sclerosis. Rheumatology (Oxford). 2003;42:534-40. doi: 10.1093/rheumatology/keg170</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Hamaguchi Y, Kodera M, Matsushita T, et al. Clinical and immunological predictors of scleroderma renal crisis for Japanese systemic sclerosis patients with anti-RNA polymerase III autoantibodies. Arthritis Rheum. 2015;67:1045-52. doi: 10.1002/art.38994</mixed-citation><mixed-citation xml:lang="en">Hamaguchi Y, Kodera M, Matsushita T, et al. Clinical and immunological predictors of scleroderma renal crisis for Japanese systemic sclerosis patients with anti-RNA polymerase III autoantibodies. Arthritis Rheum. 2015;67:1045-52. doi: 10.1002/art.38994</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Moinzadeh P, Fonseca C, Hellmich M, et al. Association of anti-RNA polymerase III autoantibodies and cancer in scleroderma. Arthritis Res Ther. 2014;16:R53. doi: 10.1186/ar4486</mixed-citation><mixed-citation xml:lang="en">Moinzadeh P, Fonseca C, Hellmich M, et al. Association of anti-RNA polymerase III autoantibodies and cancer in scleroderma. Arthritis Res Ther. 2014;16:R53. doi: 10.1186/ar4486</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Jung M, Baron M, Hudson M, et al. Myopathy is a poor prognostic feature in systemic sclerosis: results from the Canadian Scleroderma Research Group (CSRG) cohort. Scand J Rheumatol. 2014;43(3):217-20. doi: 10.3109/03009742.2013.868512</mixed-citation><mixed-citation xml:lang="en">Jung M, Baron M, Hudson M, et al. Myopathy is a poor prognostic feature in systemic sclerosis: results from the Canadian Scleroderma Research Group (CSRG) cohort. Scand J Rheumatol. 2014;43(3):217-20. doi: 10.3109/03009742.2013.868512</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Hoffmann AM, Gunnarsson R, Garen T, et al. Performance of the 2013 American College of Rheumatology/European League Against Rheumatism Classification Criteria for Systemic Sclerosis (SSc) in Large, Well-defined Cohorts of SSc and Mixed Connective Tissue Disease. J Rheumatol. 2015;42:60-3. doi: 10.3899/jrheum.140047</mixed-citation><mixed-citation xml:lang="en">Hoffmann AM, Gunnarsson R, Garen T, et al. Performance of the 2013 American College of Rheumatology/European League Against Rheumatism Classification Criteria for Systemic Sclerosis (SSc) in Large, Well-defined Cohorts of SSc and Mixed Connective Tissue Disease. J Rheumatol. 2015;42:60-3. doi: 10.3899/jrheum.140047</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Hamaguchi Y, Hasegawa M, Fujimoto M, et al. The clinical relevance of serum antinuclear antibodies in Japanese patients with systemic sclerosis. Br J Dermatol. 2008;158(3):487-95. doi: 10.1111/j.1365-2133.2007.08392.x</mixed-citation><mixed-citation xml:lang="en">Hamaguchi Y, Hasegawa M, Fujimoto M, et al. The clinical relevance of serum antinuclear antibodies in Japanese patients with systemic sclerosis. Br J Dermatol. 2008;158(3):487-95. doi: 10.1111/j.1365-2133.2007.08392.x</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Steen VD. Autoantibodies in systemic sclerosis. Semin Arthritis Rheum. 2005;35:35-42. doi: 10.1016/j.semarthrit.2005.03.005</mixed-citation><mixed-citation xml:lang="en">Steen VD. Autoantibodies in systemic sclerosis. Semin Arthritis Rheum. 2005;35:35-42. doi: 10.1016/j.semarthrit.2005.03.005</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Reveille JD, Fischbach M, McNearney T, et al. Systemic sclerosis in 3 US ethnic groups: a comparison of clinical sociodemographic, serologic, and immunogenetic determinants. Semin Arthritis Rheum. 2001;30:332-46. doi: 10.1053/sarh.2001.20268</mixed-citation><mixed-citation xml:lang="en">Reveille JD, Fischbach M, McNearney T, et al. Systemic sclerosis in 3 US ethnic groups: a comparison of clinical sociodemographic, serologic, and immunogenetic determinants. Semin Arthritis Rheum. 2001;30:332-46. doi: 10.1053/sarh.2001.20268</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Kuwana M, Kaburaki J, Okano Y, et al. Clinical and prognostic associations based on serum antinuclear antibodies in Japanese patients with systemic sclerosis. Arthritis Rheum. 1994;37:75-83. doi: 10.1002/art.1780370111</mixed-citation><mixed-citation xml:lang="en">Kuwana M, Kaburaki J, Okano Y, et al. Clinical and prognostic associations based on serum antinuclear antibodies in Japanese patients with systemic sclerosis. Arthritis Rheum. 1994;37:75-83. doi: 10.1002/art.1780370111</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Шаяхметова РУ, Ананьева ЛП, Конева ОА и др. Клинико-лабораторная характеристика больных системной склеродермией позитивных по антителам к рибонуклеопротеину. Научно-практическая ревматология. 2019;57(5):539-44. doi: 10.14412/1995-4484-2019-539-544</mixed-citation><mixed-citation xml:lang="en">Shayakhmetova RU, Ananyeva LP, Koneva OA, et al. Clinical and laboratory characteristics of patients with systemic sclerosis positive for anti-ribonucleoprotein antibodies. Nauchno-Prakticheskaya Revmatologiya = Rheumatology Science and Practice. 2019;57(5):539-44 (In Russ.). doi: 10.14412/1995-4484-2019-539-544</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Carpintero MF, Martinez L, Fernandez I, et al. Diagnosis and risk stratification in patients with anti-RNP autoimmunity. Lupus. 2015;24(10):1057-66. doi: 10.1177/0961203315575586</mixed-citation><mixed-citation xml:lang="en">Carpintero MF, Martinez L, Fernandez I, et al. Diagnosis and risk stratification in patients with anti-RNP autoimmunity. Lupus. 2015;24(10):1057-66. doi: 10.1177/0961203315575586</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Brahms H, Raker VA, van Venrooij WJ, et al. A major, novel systemic lupus erythematosus autoantibody class recognizes the E, F, and G SmsnRNP proteins as an E—F—G complex but not in their denatured states. Arthritis Rheum. 1997;40:672-82. doi: 10.1002/art.1780400412</mixed-citation><mixed-citation xml:lang="en">Brahms H, Raker VA, van Venrooij WJ, et al. A major, novel systemic lupus erythematosus autoantibody class recognizes the E, F, and G SmsnRNP proteins as an E—F—G complex but not in their denatured states. Arthritis Rheum. 1997;40:672-82. doi: 10.1002/art.1780400412</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Lokesh S, Kadavanu T, Raghupathy, et al. A Rare Case of Mixed Connective Tissue Disease (MCTD) with Intricate Features of Lupus, Polymyositis and Rheumatoid Arthritis Presenting with Severe Myositis. J Clin Diagn Res. 2015;9(3):5-7.</mixed-citation><mixed-citation xml:lang="en">Lokesh S, Kadavanu T, Raghupathy, et al. A Rare Case of Mixed Connective Tissue Disease (MCTD) with Intricate Features of Lupus, Polymyositis and Rheumatoid Arthritis Presenting with Severe Myositis. J Clin Diagn Res. 2015;9(3):5-7.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Десинова ОВ, Старовойтова МН, Гусева ИА и др. Особенности перекрестной формы системной склеродермии с ревматоидным артритом (ССД-РА overlap-синдром). Научно-практическая ревматология. 2007;45(4):18-23. doi: 10.14412/1995-4484-2007-18-23</mixed-citation><mixed-citation xml:lang="en">Desinova OV, Starovoytova MN, Guseva IA, et al. Features of systemic sclerosis-rheumatoid arthritis overlap syndrome (SS-RA overlap syndrome). Nauchno-Prakticheskaya Revmatologiya = Rheumatology Science and Practice. 2007;45(4):18-23 (In Russ.). doi: 10.14412/1995-4484-2007-18-23</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Brennan P, Silman A, Black C and the UK Scleroderma Study Group. Realiability of skin score measures in scleroderma. Br J Rheumatol. 1992;31:457-60. doi: 10.1093/rheumatology/31.7.457</mixed-citation><mixed-citation xml:lang="en">Brennan P, Silman A, Black C and the UK Scleroderma Study Group. Realiability of skin score measures in scleroderma. Br J Rheumatol. 1992;31:457-60. doi: 10.1093/rheumatology/31.7.457</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Насонов ЕЛ, редактор. Российские клинические рекомендации. Ревматология. Москва: ГЭОТАР-Медиа; 2017. С. 150-66 [Nasonov EL, editor. Rossiiskie klinicheskie rekomendatsii. Revmatologiya. ISBN 978-5-9704-4261-6</mixed-citation><mixed-citation xml:lang="en">Nasonov EL, editor. Rossiiskie klinicheskie rekomendatsii. Revmatologiya [Russian clinical recommendations. Rheumatology]. Moscow: GEOTAR-Media; 2017. P. 150-66 (In Russ.). ISBN 978-5-9704-4261-6</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Hamaguchi Y, Takehara K. Anti-nuclear autoantibodies in systemic sclerosis?: News and perspectives. J Scler Relat Disord. 2018;3(3):201-13. doi: 10.1177/2397198318783930</mixed-citation><mixed-citation xml:lang="en">Hamaguchi Y, Takehara K. Anti-nuclear autoantibodies in systemic sclerosis?: News and perspectives. J Scler Relat Disord. 2018;3(3):201-13. doi: 10.1177/2397198318783930</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Steen V, Domsic RT, Lucas M, et al. A clinical and serologic comparison of African American and Caucasian patients with systemic sclerosis. Arthritis Rheum. 2012;64(9): 2986-994. doi: 10.1002/art.34482</mixed-citation><mixed-citation xml:lang="en">Steen V, Domsic RT, Lucas M, et al. A clinical and serologic comparison of African American and Caucasian patients with systemic sclerosis. Arthritis Rheum. 2012;64(9): 2986-994. doi: 10.1002/art.34482</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Ihn H, Yamane K, Yazawa N, et al. Distribution and antigen specificity of anti-U1RNP antibodies in patients with systemic sclerosis. Clin Exp Immunol. 1999;117(2):383-7. doi: 10.1046/j.1365-2249.1999.00961.x</mixed-citation><mixed-citation xml:lang="en">Ihn H, Yamane K, Yazawa N, et al. Distribution and antigen specificity of anti-U1RNP antibodies in patients with systemic sclerosis. Clin Exp Immunol. 1999;117(2):383-7. doi: 10.1046/j.1365-2249.1999.00961.x</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Sobanski V, Giovannelli J, Lynch BM. Characteristics and survival of anti-U1 RNP antibody-positive patients with connective tissue disease-associated pulmonary arterial hypertension. Arthritis Rheum. 2016;68:484-93. doi: 10.1002/art.39432</mixed-citation><mixed-citation xml:lang="en">Sobanski V, Giovannelli J, Lynch BM. Characteristics and survival of anti-U1 RNP antibody-positive patients with connective tissue disease-associated pulmonary arterial hypertension. Arthritis Rheum. 2016;68:484-93. doi: 10.1002/art.39432</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Lundberg I, Hedfors E. Clinical course of patients with anti-RNP antibodies. A prospective study of 32 patients. J Rheumatol. 1991;18:1511-9.</mixed-citation><mixed-citation xml:lang="en">Lundberg I, Hedfors E. Clinical course of patients with anti-RNP antibodies. A prospective study of 32 patients. J Rheumatol. 1991;18:1511-9.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Baldini С, Mosca M, Della Rossa A, et al. Overlap of ACA-posi-tive systemic sclerosis and Sjo gren’s syndrome: a distinct clinical entity with mild organ involvement but at high risk of lymphoma. Clin Exper Rheumatol. 2013;31:272-80.</mixed-citation><mixed-citation xml:lang="en">Baldini С, Mosca M, Della Rossa A, et al. Overlap of ACA-posi-tive systemic sclerosis and Sjo gren’s syndrome: a distinct clinical entity with mild organ involvement but at high risk of lymphoma. Clin Exper Rheumatol. 2013;31:272-80.</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>
