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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">avk</journal-id><journal-title-group><journal-title xml:lang="ru">Архивъ внутренней медицины</journal-title><trans-title-group xml:lang="en"><trans-title>The Russian Archives of Internal Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-6704</issn><issn pub-type="epub">2411-6564</issn><publisher><publisher-name>“SINAPS” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20514/2226-6704-2022-12-4-310-315</article-id><article-id custom-type="elpub" pub-id-type="custom">avk-1484</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLE</subject></subj-group></article-categories><title-group><article-title>Уровень IgA антител к CD74 у пациентов со спондилоартритами и дегенеративно-дистрофическими заболеваниями позвоночника</article-title><trans-title-group xml:lang="en"><trans-title>The Level of IgA Antibodies to CD74 in Patients with Spondyloarthritis and Degenerative-Dystrophic Diseases of the Spine</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>Ребров</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Rebrov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саратов</p></bio><bio xml:lang="en"><p>St. Petersburg</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>Гайдукова</surname><given-names>И. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaydukova</surname><given-names>I. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Апаркина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aparkina</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саратов</p></bio><bio xml:lang="en"><p>St. Petersburg</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>Королев</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolev</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Новосибирск</p></bio><bio xml:lang="en"><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сафарова</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Safarova</surname><given-names>K. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саратов</p></bio><bio xml:lang="en"><p>St. Petersburg</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>Дорогойкина</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Dorogoikina</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саратов</p></bio><bio xml:lang="en"><p>St. Petersburg</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>Бичурина</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bichurina</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саратов</p></bio><bio xml:lang="en"><p>Saratov</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Саратовский ГМУ им. В.И. Разумовского» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saratov State Medical University named after V.I. Razumovskyy</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Северо-Западный государственный медицинский университет им. И.И. Мечникова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Western State Medical University named after I.I. Mechnikov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НИИ клинической и экспериментальной лимфологии — филиал ФГБНУ «Федеральный исследовательский центр Институт цитологии и генетики СО РАН»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Clinical and Exper imental Lymphology — branch Novosibirskof the Federal State Budgetary Scientific Institution «Federal Research Center Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГУЗ «Областная клиническая больница»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State healthcare institution «Regional Clinical Hospital»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>31</day><month>07</month><year>2022</year></pub-date><volume>12</volume><issue>4</issue><fpage>310</fpage><lpage>315</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ребров А.П., Гайдукова И.З., Апаркина А.В., Королев М.А., Сафарова К.Н., Дорогойкина К.Д., Бичурина Д.М., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ребров А.П., Гайдукова И.З., Апаркина А.В., Королев М.А., Сафарова К.Н., Дорогойкина К.Д., Бичурина Д.М.</copyright-holder><copyright-holder xml:lang="en">Rebrov A.P., Gaydukova I.Z., Aparkina A.V., Korolev M.A., Safarova K.N., Dorogoikina K.D., Bichurina D.M.</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.medarhive.ru/jour/article/view/1484">https://www.medarhive.ru/jour/article/view/1484</self-uri><abstract><p>По данным литературы аутоантитела IgA к антигену CD74 рассматриваются в качестве возможного маркера для диагностики аксиальных спондилоартритов (СпА). У пациентов с болью в спине в связи с дегенеративно-дистрофическими заболеваниями позвоночника (ДДЗП) уровень аутоантител к CD74 не изучался. Представляет интерес сопоставление уровня аутоантитела IgA к антигену CD74 у пациентов с хронической болью в спине при р азличных заболеваниях. Цель настоящего исследования — сравнение уровней аутоантитела IgA к антигену CD74 у пациентов со СпА и ДДЗП. Материалы и методы. В исследовании включено 87 пациентов (55 мужчин, средний возраст 41 [29; 49] лет) со СпА, отвечающих критериям аксиального спондилоартрита Assessment of Spondyloarthritis International Society (2009), и 39 пациентов (25 мужчин, средний возраст 45 [34; 53] лет) с ДДЗП, верифицированных неврологом (коды МКБ-Х — М 51.1 и М 54.4). Методом количественного иммуноферментного анализа измеряли содержание аутоантител IgA к CD74 в образцах сывороток у пациентов со СпА и ДДЗП. Результаты. Средний уровень аутоантител IgA к CD74 у пациентов со СпА составил 11,3 [5,4; 19,4] Ед/мл, у пациентов с ДДЗП — 6,9 [4,5; 13,7] Ед/мл (p=0,024). Концентрация аутоантитела IgA к антигену CD74, превышающая пороговое значение, выявлена у 58 (66,7 %) пациентов со СпА и только у 11 (28,2 %) пациентов с ДДЗП (p&lt;0,001). У пациентов с ДДЗП повышение уровня аутоантител IgA к CD74 выявлено у 10 (40 %) из 25 мужчин и у 1 (7,1 %) из 14 женщин (р = 0,029, χ2 = 4,785). Выводы. У 2/3 пациентов со СпА установлено повышение уровня аутоантител IgA к CD74. При этом у пациентов со спондилоартритами значимо повышена концентрация аутоантител IgA к CD74 по сравнению с пациентами с ДДЗП. &gt;&lt; 0,001). У пациентов с ДДЗП повышение уровня аутоантител IgA к CD74 выявлено у 10 (40 %) из 25 мужчин и у 1 (7,1 %) из 14 женщин (р = 0,029, χ2 = 4,785). Выводы. У 2/3 пациентов со СпА установлено повышение уровня аутоантител IgA к CD74. При этом у пациентов со спондилоартритами значимо повышена концентрация аутоантител IgA к CD74 по сравнению с пациентами с ДДЗП. </p></abstract><trans-abstract xml:lang="en"><p>Background. According to the scientific literature, anti-CD74 IgA antibodies (IgA anti-CD74) are considered as a possible marker for the diagnosis of axial spondyloarthritis (SpA). The level of IgA anti-CD74 in patients with back pain due to degenerative spine disease has not been studied. Therefore, it could be interesting to compare the serum levels of IgA anti-CD74 in patients with chronic back pain in various diseases. Aim: to compare the levels of IgA anti-CD74 in patients with SpA and degenerative spine diseases. Material and methods. A total of 87 SpA patients (55 male, mean age 41 [29; 49] years) fulfilling the Assessment of Spondyloarthritis International Society (2009) criteria for Axial SpA, and 39 patients (25 male, mean age 45 [34; 53] years) with neurologist-verified degenerative spine diseases (ICD 10 codes — M 51.1 and M 54.4) were enrolled to the study. The serum levels of IgA anti-CD74 were analyzed by enzyme-linked immunosorbent assay (ELISA) in all patients. Results. The median levels of IgA anti-CD74 in patients with SpA were 11.3 [5.4; 19.4] U/ml, in patients with degenerative spine disease — 6.9 [4.5; 13.7] U/ml (p=0.024). IgA anti-CD74 serum levels were above the cut-off value in 58 (66.7 %) patients with SpA and only in 11 (28.2 %) patients with degenerative spine disease (p&lt;0,001). The elevated serum levels of IgA anti-CD74 were detected in 10 (40 %) of 25 male patients and in 1 (7.1 %) of 14 female patients (p = 0.029, χ2 = 4.785) with degenerative spine disease. Conclusion. Serum levels of I gA anti-CD74 were increased in two-thirds of patients with SpA. IgA anti-CD74 was significantly higher in SpA patients compared to patients with degenerative spine disease. &gt;&lt; 0,001). The elevated serum levels of IgA anti-CD74 were detected in 10 (40 %) of 25 male patients and in 1 (7.1 %) of 14 female patients (p = 0.029, χ2 = 4.785) with degenerative spine disease. Conclusion. Serum levels of I gA anti-CD74 were increased in two-thirds of patients with SpA. IgA anti-CD74 was significantly higher in SpA patients compared to patients with degenerative spine disease.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>IgA антитела к CD74</kwd><kwd>спондилоартрит</kwd><kwd>дегенеративно-дистрофические заболевания позвоночник</kwd></kwd-group><kwd-group xml:lang="en"><kwd>IgA antibodies to CD74</kwd><kwd>spondyloarthritis</kwd><kwd>degenerative-dystrophic diseases of the spine</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 Ш.Ф., Ребров А.П., Дубинина Т.В., и др. Спондилоартриты: современная терминология и определения. Терапевтический архив. 2019; 91(5): 84–8. doi:10.26442/004036 60.2019.05.000208</mixed-citation><mixed-citation xml:lang="en">Erdes S.F., Rebrov A.P., Dubinina T.V. et al. Spondyloarthritis: modern terminology anddefinitions. 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