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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Neuromuscular Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Neuromuscular Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Нервно-мышечные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-8721</issn><issn publication-format="electronic">2413-0443</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">545</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2023-13-2-72-82</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ РАЗБОР</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Anti-SRP antibody-associated necrotizing myopathy: 2 clinical cases</article-title><trans-title-group xml:lang="ru"><trans-title>Анти-SRP-ассоциированная некротизирующая миопатия: 2 клинических случая</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abbasov</surname><given-names>F. A.</given-names></name><name xml:lang="ru"><surname>Аббасов</surname><given-names>Ф. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Farkhad Akif ogly Abbasov</bold></p><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p><p>23 Marshala Novikova St., Moscow 123098</p></bio><bio xml:lang="ru"><p><bold>Фархад Акиф оглы Аббасов</bold></p><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p><p>123098 Москва, ул. Маршала Новикова, 23</p></bio><email>dr.f.abbasov@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zemtsova</surname><given-names>G. V.</given-names></name><name xml:lang="ru"><surname>Земцова</surname><given-names>Г. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chekhonatskaya</surname><given-names>K. I.</given-names></name><name xml:lang="ru"><surname>Чехонацкая</surname><given-names>К. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kukhno</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Кухно</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Severova</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Северова</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shmyreva</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Шмырева</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kindarova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Киндарова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Schekochikhin</surname><given-names>D. Yu.</given-names></name><name xml:lang="ru"><surname>Щекочихин</surname><given-names>Д. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 2 Rublevskoe predmestye St., Glukhovo, Krasnogorsk 143421</p></bio><bio xml:lang="ru"><p><!--StartFragment --></p><p>143421 Красногорск, д. Глухово, ул. Рублевское предместье, 2, корп. 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ilyinskaya hospital</institution></aff><aff><institution xml:lang="ru">АО «Ильинская больница»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">A.I. Burnazyan Federal Medical and Biophysical Center, Federal Medical and Biological Agency of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Государственный научный центр Российской Федерации – Федеральный медицинский биофизический центр им. А. И. Бурназяна» ФМБА России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-06-16" publication-format="electronic"><day>16</day><month>06</month><year>2023</year></pub-date><volume>13</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>72</fpage><lpage>82</lpage><history><date date-type="received" iso-8601-date="2023-06-16"><day>16</day><month>06</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-06-16"><day>16</day><month>06</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Abbasov F.A., Zemtsova G.V., Popov P.A., Chekhonatskaya K.I., Kukhno D.V., Severova M.M., Shmyreva M.V., Kindarova A.A., Schekochikhin D.Y.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Аббасов Ф.А., Земцова Г.В., Попов П.А., Чехонацкая К.И., Кухно Д.В., Северова М.М., Шмырева М.В., Киндарова А.А., Щекочихин Д.Ю.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Abbasov F.A., Zemtsova G.V., Popov P.A., Chekhonatskaya K.I., Kukhno D.V., Severova M.M., Shmyreva M.V., Kindarova A.A., Schekochikhin D.Y.</copyright-holder><copyright-holder xml:lang="ru">Аббасов Ф.А., Земцова Г.В., Попов П.А., Чехонацкая К.И., Кухно Д.В., Северова М.М., Шмырева М.В., Киндарова А.А., Щекочихин Д.Ю.</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://nmb.abvpress.ru/jour/article/view/545">https://nmb.abvpress.ru/jour/article/view/545</self-uri><abstract xml:lang="en"><p>Necrotizing myopathies are a subtype of autoimmune myopathies characterized by muscle fiber necrosis with minimal infiltration by inflammatory cells on muscle biopsy. This group of myopathies is defined by flaccid palsies due to prima‑ ry skeletal muscle damage as well as extramuscular manifestations such as fever, rash, arthritis, Raynaud’s syndrome and interstitial lung disease. The presence of anti-SRP antibodies is associated with rapidly progressive refractory myositis predominantly affecting limb muscles and axial muscles.</p><p>Objective of the work is to analyze the course of severe, refractory to several lines of immunosuppressive therapies anti-SRP associated necrotizing myopathy and to highlight an adequate treatment regime.</p><p>Necrotizing myopathy was suspected in patients aged 39 and 56 years with rapidly progressive flaccid tetraparesis on the basis of clinical and anamnestic data, the results of needle electromyography and muscle magnetic resonance imaging, as well as the analysis of myositis-specific and myositis-associated autoantibodies. In both cases, a rapid development of atrophies, marked muscle weakness in the limbs, without involvement of the bulbar musculature, was observed. To achieve effective control of the disease progression, several lines of therapy were required: glucocorticosteroids, intravenous immunoglobulins, methotrexate and rituximab. Our observations are consistent with those in the literature.</p><p>Our observations illustrate the clinical course of severe myopathy associated with anti-SRP antibodies. Early initiation of aggressive immunosuppression is crucial to control the disease progression. Treatment and rehabilitation allow achieving significant improvement of the patient’s condition.</p></abstract><trans-abstract xml:lang="ru"><p>Некротизирующие миопатии – это подтип аутоиммунных миопатий, для которого характерен некроз мышечных волокон с минимальной инфильтрацией воспалительными клетками по данным мышечной биопсии. Клиническая картина данной группы миопатий определяется парезами в связи с первичным поражением скелетных мышц, а также внемышечными проявлениями, такими как лихорадка, сыпь, артриты, синдром Рейно и интерстициальная болезнь легких. Наличие анти-SRP-антител ассоциируется с развитием быстропрогрессирующих и рефрактерных к лечению миозитов с поражением мускулатуры конечностей и аксиальной мускулатуры.</p><p>Цель работы – провести анализ особенностей течения рефрактерной к иммуносупрессивной терапии анти-SRP-ассоциированной некротизирующей миопатии и составить адекватный план лечения.</p><p>У 2 пациенток 39 и 56 лет с быстропрогрессирующим вялым тетрапарезом на основании клинико-анамнестических данных, результатов игольчатой электромиографии и магнитно-резонансной томографии мышц, а также анализа миозитспецифических и миозит-ассоциированных аутоантител заподозрена некротизирующая миопатия. В обоих случаях отмечено быстрое развитие атрофий, выраженной слабости мышц конечностей, без вовлечения бульбарной мускулатуры. Для достижения эффективного контроля над течением болезни потребовалось назначение нескольких линий терапии: глюкокортикостероидов, внутривенных иммуноглобулинов, метотрексата и ритуксимаба. Представленные наблюдения согласуются с данными литературы.</p><p>Наблюдения иллюстрируют тяжесть и быстроту течения миопатии, ассоциированной с антителами к SRP, необходимость раннего начала агрессивной иммуносупрессии. Активные лечебно-реабилитационные мероприятия позволяют добиться существенного улучшения состояния больного.</p></trans-abstract><kwd-group xml:lang="en"><kwd>necrotizing myopathies</kwd><kwd>polymyositis</kwd><kwd>anti‑SRP</kwd><kwd>inflammatory myopathies</kwd><kwd>creatine phosphokinase</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>некротизирующие миопатии</kwd><kwd>полимиозит</kwd><kwd>анти‑SRP</kwd><kwd>воспалительные миопатии</kwd><kwd>креатинфосфокиназа</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Malik A., Hayat G., Kalia J.S. et al. Idiopathic inflammatory myopathies: clinical approach and management. Front Neurol 2016;7:64. DOI: 10.3389/fneur.2016.00064</mixed-citation></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Pinal-Fernandez I., Casal-Dominguez M., Mammen A.L. Immune-mediated necrotizing myopathy. Curr Rheumatol Rep 2018;20(4):21. 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