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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Terapevticheskii arkhiv</journal-id><journal-title-group><journal-title xml:lang="en">Terapevticheskii arkhiv</journal-title><trans-title-group xml:lang="ru"><trans-title>Терапевтический архив</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3660</issn><issn publication-format="electronic">2309-5342</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">702450</article-id><article-id pub-id-type="doi">10.26442/00403660.2026.05.203605</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Combined comorbid pathology in axial spondyloarthritis</article-title><trans-title-group xml:lang="ru"><trans-title>Сочетанная коморбидная патология при аксиальных спондилоартритах</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5968-2403</contrib-id><name-alternatives><name xml:lang="en"><surname>Korsakova</surname><given-names>Yulia L.</given-names></name><name xml:lang="ru"><surname>Корсакова</surname><given-names>Юлия Леонидовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, ст. науч. сотр. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0579-1131</contrib-id><name-alternatives><name xml:lang="en"><surname>Korotaeva</surname><given-names>Tatiana V.</given-names></name><name xml:lang="ru"><surname>Коротаева</surname><given-names>Татьяна Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>д-р мед. наук, зав. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1771-6246</contrib-id><name-alternatives><name xml:lang="en"><surname>Dubinina</surname><given-names>Tatiana V.</given-names></name><name xml:lang="ru"><surname>Дубинина</surname><given-names>Татьяна Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, зав. лаб. аксиального спондилоартрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5015-7143</contrib-id><name-alternatives><name xml:lang="en"><surname>Gubar</surname><given-names>Elena E.</given-names></name><name xml:lang="ru"><surname>Губарь</surname><given-names>Елена Ефимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, науч. сотр. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6875-4552</contrib-id><name-alternatives><name xml:lang="en"><surname>Loginova</surname><given-names>Elena Yu.</given-names></name><name xml:lang="ru"><surname>Логинова</surname><given-names>Елена Юрьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, ст. науч. сотр. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8626-8419</contrib-id><name-alternatives><name xml:lang="en"><surname>Vorobyeva</surname><given-names>Lyubov D.</given-names></name><name xml:lang="ru"><surname>Воробьева</surname><given-names>Любовь Дмитриевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, науч. сотр. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4005-1745</contrib-id><name-alternatives><name xml:lang="en"><surname>Tremaskina</surname><given-names>Polina O.</given-names></name><name xml:lang="ru"><surname>Тремаскина</surname><given-names>Полина Олеговна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>мл. науч. сотр. лаб. псориатического артрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2246-686X</contrib-id><name-alternatives><name xml:lang="en"><surname>Agafonova</surname><given-names>Ekaterina M.</given-names></name><name xml:lang="ru"><surname>Агафонова</surname><given-names>Екатерина Михайловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, науч. сотр. лаб. аксиального спондилоартрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2486-8798</contrib-id><name-alternatives><name xml:lang="en"><surname>Sakharova</surname><given-names>Ksenia V.</given-names></name><name xml:lang="ru"><surname>Сахарова</surname><given-names>Ксения Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>мл. науч. сотр. лаб. аксиального спондилоартрита</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5290-156X</contrib-id><name-alternatives><name xml:lang="en"><surname>Panevin</surname><given-names>Taras S.</given-names></name><name xml:lang="ru"><surname>Паневин</surname><given-names>Тарас Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, науч. сотр. лаб. эволюции ревматоидного артрита, доц. каф. факультетской и поликлинической терапии с курсом эндокринологии</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4285-0869</contrib-id><name-alternatives><name xml:lang="en"><surname>Glukhova</surname><given-names>Svetlana I.</given-names></name><name xml:lang="ru"><surname>Глухова</surname><given-names>Светлана Ивановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. физ-мат. наук, ст. науч. сотр. отд. координации научной деятельности</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4190-4471</contrib-id><name-alternatives><name xml:lang="en"><surname>Podryadnova</surname><given-names>Maria V.</given-names></name><name xml:lang="ru"><surname>Подряднова</surname><given-names>Мария Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, врач-ревматолог отд-ния ревматологии</p></bio><email>yulkorsakova@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Nasonova Research Institute of Rheumatology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научно-исследовательский институт ревматологии им. В.А. Насоновой» Минобрнауки России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Far Eastern State Medical University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Дальневосточный государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-06-13" publication-format="electronic"><day>13</day><month>06</month><year>2026</year></pub-date><volume>98</volume><issue>5</issue><issue-title xml:lang="en">Issues of rheumatology</issue-title><issue-title xml:lang="ru">Вопросы ревматологии</issue-title><fpage>282</fpage><lpage>289</lpage><history><date date-type="received" iso-8601-date="2026-02-10"><day>10</day><month>02</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-02-20"><day>20</day><month>02</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ter-arkhiv.ru/0040-3660/article/view/702450">https://ter-arkhiv.ru/0040-3660/article/view/702450</self-uri><abstract xml:lang="en"><p><bold>Aim. </bold>To analyze the frequency of combined comorbid pathology and its effect on clinical and instrumental characteristics in axial spondyloarthritis (SpA), including axial psoriatic arthritis.</p> <p><bold>Materials and methods. </bold>222 patients were included in the study: 108 with axial SpA, 114 with axial psoriatic arthritis. The average age was 40.9±12.4 years, and the duration of inflammatory back pain was 68±53.3 months. A standard rheumatological examination, X-ray of the cervical and lumbar spine, and pelvis were performed. The activity of spondylitis was determined by BASDAI and ASDAS-CRP. The patients were divided into 3 groups: 1st – without comorbid diseases (CD) – 66 (29.7%) patients, 2nd – with 1–2 CD – 78 (35.1%), 3rd – with ≥3 CD – 78 (35.1%).</p> <p><bold>Results. </bold>The patients in 3rd group were older than in the other groups (in 1st group – 39±12.1 years, in 2nd – 39±11.2, in 3rd – 44.5±13.1; <italic>p</italic><sub>1-3</sub>=0.039, <italic>p</italic><sub>2-3</sub>=0.028), they had a higher level of Pain (in the 1st – 54.3±19.7 mm VAS, in the 2nd – 51.1±22.7, in the 3rd – 63.3±19.4; <italic>p</italic>=0.01 for all comparisons), the ASDAS-CRP value was higher than in the 1st group (in the 1st – 2.2±1.1, in the 2nd – 2.6±1.1, 3rd – 2.7±0.9; <italic>p</italic><sub>1-3</sub>=0.01), syndesmophytes were more common in the cervical and/or lumbar spine, ankylosis of the faceted joints in the cervical spine (<italic>p</italic>&lt; 0.05). The results of the cluster analysis allowed us to group the features into 4 main clusters. The first cluster, in which the ASDAS-CRP and BASDAI indices were grouped, is combined, on the one hand, with a cluster with the presence of psoriasis, comorbidity (≥3), and structural changes in the spine, on the other hand, with other CD and extra-skeletal manifestations of SpA.</p> <p><bold>Conclusion.</bold> The presence of a combination of CD was associated with higher activity of spondylitis, more common structural injuries of the spine. The choice of therapy, taking into account СD and extra-skeletal manifestations of SpA, should improve patient treatment outcomes.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель. </bold>Проанализировать частоту сочетанной коморбидной патологии и ее влияние на клинико-инструментальные характеристики при аксиальных спондилоартритах (СпА), включая аксиальный псориатический артрит.</p> <p><bold>Материалы и методы. </bold>В исследование включены 222 пациента: 108 с аксиальным спондилоартритом, 114 с аксиальным псориатическим артритом. Средний возраст – 40,9±12,4 года, длительность воспалительной боли в спине – 68±53,3 мес. Проводилось стандартное ревматологическое обследование, рентгенография шейного и поясничного отделов позвоночника (ШОП и ПОП), таза. Активность спондилита определяли по BASDAI и ASDAS-СРБ. Пациентов разделили на 3 группы: 1-я – без коморбидных заболеваний (КЗ) – 66 (29,7%) пациентов, 2-я – с 1–2 КЗ – 78 (35,1%), 3-я – с ≥3 КЗ – 78 (35,1%).</p> <p><bold>Результаты.</bold> В 3-й группе пациенты старше, чем в других группах (в 1-й – 39±12,1 года, во 2-й – 39±11,2, в 3-й – 44,5±13,1; <italic>p</italic><sub>1-3</sub>=0,039, <italic>p</italic><sub>2-3</sub>=0,028), у них выше оценка пациентом боли (в 1-й – 54,3±19,7 мм по Визуальной аналоговой шкале, во 2-й – 51,1±22,7, в 3-й – 63,3±19,4; <italic>р</italic>=0,01 для всех сравнений), выше, чем в 1-й группе, ASDAS-СРБ (в 1-й – 2,2±1,1, во 2-й – 2,6±1,1, в 3-й – 2,7±0,9; <italic>p</italic><sub>1-3</sub>=0,01), чаще встречались синдесмофиты в ШОП и/или ПОП, анкилоз дугоотростчатых суставов в ШОП (<italic>р</italic>&lt; 0,05). Результаты кластерного анализа позволили сгруппировать признаки в 4 основных кластера; 1-й кластер, в котором сгруппировались индексы ASDAS-СРБ и BASDAI, связан с кластером, который включает в себя псориаз, ≥3КЗ, структурные изменения позвоночника, а также с кластерами, объединяющими различные КЗ и внескелетные проявления СпА.</p> <p><bold>Заключение. </bold>Сочетание КЗ ассоциировалось с более высокой активностью спондилита, более распространенными структурными повреждениями позвоночника. Выбор терапии с учетом КЗ и внескелетных проявлений СпА должен улучшить результаты лечения пациентов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>axial spondyloarthritis</kwd><kwd>axial psoriatic arthritis</kwd><kwd>comorbid diseases</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аксиальный спондилоартрит</kwd><kwd>аксиальный псориатический артрит</kwd><kwd>коморбидные заболевания</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was conducted as part of the implementation of the fundamental scientific topic No. RK-125020501435-8 „Evolution of Axial Spondyloarthritises Based on a Comprehensive Dynamic Study of Molecular-Biological, Molecular-Genetic, Clinical-Imaging Factors of Disease Progression, Quality of Life, Comorbidity, and Targeted Innovative Therapy“, approved by the Academic Council of the Nasonova Research Institute of Rheumatology.</funding-statement><funding-statement xml:lang="ru">Исследование проводилось в рамках выполнения фундаментальной научной темы № РК-125020501435-8 «Эволюция аксиальных спондилоартритов на основе комплексного динамического изучения молекулярно-биологических, молекулярно-генетических, клинико-визуализационных факторов прогрессирования заболевания, качества жизни, коморбидности и таргетной инновационной терапии», утвержденной ученым советом ФГНБУ «НИИР им. 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