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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">mrj</journal-id><journal-title-group><journal-title xml:lang="ru">Современная ревматология</journal-title><trans-title-group xml:lang="en"><trans-title>Modern Rheumatology Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1996-7012</issn><issn pub-type="epub">2310-158X</issn><publisher><publisher-name>IMA-PRESS, LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/1996-7012-2019-2-55-60</article-id><article-id custom-type="elpub" pub-id-type="custom">mrj-911</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 INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Ассоциация показателей активности анкилозирующего спондилита в русской популяции пациентов с rs7574865-полиморфизмом гена STAT4</article-title><trans-title-group xml:lang="en"><trans-title>Association of ankylosing spondylitis activity indicators in a Russian population of patients with STAT4 rs7574865 gene polymorphism</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>Крылов</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylov</surname><given-names>M. Yu.</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><email xlink:type="simple">mekry@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>Старкова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Starkova</surname><given-names>A. S.</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>Самаркина</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Samarkina</surname><given-names>E. Yu.</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>Дубинина</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubinina</surname><given-names>T. 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>Эрдес</surname><given-names>Ш. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Erdes</surname><given-names>Sh. F.</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 «Научно-исследовательский 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>2019</year></pub-date><pub-date pub-type="epub"><day>17</day><month>05</month><year>2019</year></pub-date><volume>13</volume><issue>2</issue><fpage>55</fpage><lpage>60</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Крылов М.Ю., Старкова А.С., Самаркина Е.Ю., Дубинина Т.В., Эрдес Ш.Ф., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Крылов М.Ю., Старкова А.С., Самаркина Е.Ю., Дубинина Т.В., Эрдес Ш.Ф.</copyright-holder><copyright-holder xml:lang="en">Krylov M.Y., Starkova A.S., Samarkina E.Y., Dubinina T.V., Erdes S.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://mrj.ima-press.net/mrj/article/view/911">https://mrj.ima-press.net/mrj/article/view/911</self-uri><abstract><p>Семейные и близнецовые исследования показали наследственную природу анкилозирующего спондилита (АС), в основе которой лежит сильная ассоциация с лейкоцитарным антигеном HLA-B27. Однако только у 1–5% носителей HLA-B27 развивается АС, что указывает на существование других генетических маркеров, участвующих в формировании предрасположенности к этому заболеванию. В ряде ассоциативных и полногеномных исследований убедительно подтверждена роль гена STAT4. Этот ген кодирует белок – сигнальный преобразователь и активатор транскрипции (STAT-белок), который является фактором предрасположенности к развитию многих аутоиммунных заболеваний. Исследований, изучавших связь между STAT4-полиморфизмами с предрасположенностью к АС, не так много, и в русской популяции они отсутствуют.</p><p>Цель исследования – изучение возможной ассоциации rs7574865 полиморфизма гена STAT4 с предрасположенностью к АС и активностью данного заболевания, определяемой по индексам BASDAI и ASDAS в русской популяции больных.</p><sec><title>Пациенты и методы</title><p>Пациенты и методы. Исследована когорта из 203 индивидов, включая 100 пациентов с АС (79 мужчин и 21 женщина) и 103 здоровых волонтеров (контроль). Оценивали возраст, пол, длительность и особенности дебюта АС, СОЭ и уровень СРБ. Активность заболевания определяли по BASDAI (Ankylosing Spondylitis Disease Activity Index) и ASDAS (Ankylosing Spondylitis Disease Activity Score).</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Показана достоверная связь между полиморфизмом гена STAT4 и уровнями СРБ и BASDAI и ASDASсрб. Носители генотипа TT имели достоверно более высокие средние показатели активности по сравнению с носителями генотипов GG (р=0,001) и GT (р=0,005) для СРБ, BASDAI (р=0,0001 и р=0,009 соответственно) и ASDASсрб (р=0,009 и р=0,001 соответственно). Высокая активность заболевания (BASDAI &gt;4 и ASDASсрб &gt;3,5) также была ассоциирована с высокой частотой аллеля Т (р=0,046 и р=0,004 соответственно). Значение rs7574865 полиморфизма гена STAT4 в патогенезе аутоиммунных заболеваний подтверждает исследование, в котором показано, что аллель Т rs7574865 гена STAT4 усиливает mРНК транскрипцию и экспрессию белка. Итальянские авторы показали связь минорного rs7574865 аллеля Т с высоким риском развития артрита. Ранее нами была установлена связь аллеля Т с предрасположенностью к диффузной форме системной склеродермии, интерстициальному поражению легких, а также с повышенным уровнем антител к топоизомеразе I.</p></sec><sec><title>Выводы</title><p>Выводы. В настоящем исследовании мы впервые показали достоверную ассоциацию полиморфизма rs7574865 гена STAT4 с основными показателями активности АС – уровнем СРБ, BASDAI и ASDASсрб. Изученный полиморфизм может являться новым генетическим маркером прогноза тяжести АС. </p></sec></abstract><trans-abstract xml:lang="en"><p>Family and twin studies have shown that ankylosing spondylitis (AS) has a hereditary nature that is based on a strong association with the leukocyte antigen HLA-B27. However, only 1–5% of HLA-B27 carriers develop AS, which indicates that there are other genetic markers involved in the formation of a predisposition to this disease. A number of genome-wide association studies have convincingly confirmed the role of the STAT4 gene. This gene encodes the protein – the signal transducer and activator of transcription (STAT) protein, which is a predisposing factor for the development of many autoimmune diseases. There are not so many studies of the relationship of STAT4 polymorphisms to the predisposition to AS, and there are no these studies regarding the Russian population.</p><sec><title>Objective</title><p>Objective: to study whether there is a possible association of STAT4 rs7574865 gene polymorphism with the predisposition to AS and to assess the activity of this disease using BASDAI and ASDAS scores in the Russian patient population.</p></sec><sec><title>Patients and methods</title><p>Patients and methods. A cohort of 203 individuals, including 100 patients (79 men and 21 women) with AS, and 103 healthy volunteers (a control group) was surveyed. Age, gender, duration, and specific features of AS onset, ESR, and CRP levels were assessed. BASDAI and ASDAS scores were calculated to evaluate disease activity.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. There was a significant relationship between STAT4 polymorphism and C-reactive protein (CRP) levels and BASDAI and ASDAS-CRP scores. The TT genotype carriers had significantly higher mean activity indices compared to the GG (p=0.001) and GT (p=0.005) genotype carriers for CRP, BASDAI (p=0.0001 and p=0.009, respectively) and ASDAS-CRP (p=0.009 and p=0.001, respectively). High disease activity (BASDAI &gt;4 and ASDAS-CRP &gt;3.5) was also associated with the high frequency of the T allele (p=0.046 and p=0.004, respectively). The value of STAT4 rs7574865 gene polymorphism in the pathogenesis of autoimmune diseases is confirmed by a study in which the T allele in STAT4 rs7574865 enhances mRNA transcription and protein expression. Italian authors have shown that there is a relationship between the minor T allele of rs7574865 and the high risk of arthritis. We have previously established a relationship between the T allele and the predisposition to diffuse systemic scleroderma, interstitial lung damage, and elevated anti-topoisomerase I antibody levels.</p></sec><sec><title>Conclusion</title><p>Conclusion. The present study has shown for the first time a significant association of STAT4 rs7574865 polymorphism with the main AS activity indicators: CRP levels, BASDAI and ASDAS-CRP scores. The studied polymorphism may be a new genetic marker for predicting the severity of AS. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>анкилозирующий спондилит</kwd><kwd>ген STAT4</kwd><kwd>rs7574865-полиморфизм</kwd><kwd>С-реактивный белок</kwd><kwd>индексы активности BASDAI</kwd><kwd>ASDAS</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ankylosing spondylitis</kwd><kwd>STAT4 gene</kwd><kwd>rs7574865 polymorphism</kwd><kwd>C-reactive protein</kwd><kwd>activity indices BASDAI</kwd><kwd>ASDAS</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">Эрдес ШФ, Бадокин ВВ, Бочкова АГ и др. О терминологии спондилоартритов. Научно-практическая ревматология. 2015;53(6):657-60. doi: 10.14412/1995-4484-2015-657-660.</mixed-citation><mixed-citation xml:lang="en">Erdes ShF, Badokin VV, Bochkova AG, et al. On the terminology of spondyloarthritis. 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