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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">medsovet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский Совет</journal-title><trans-title-group xml:lang="en"><trans-title>Meditsinskiy sovet = Medical Council</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-701X</issn><issn pub-type="epub">2658-5790</issn><publisher><publisher-name>REMEDIUM GROUP Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21518/ms2025-528</article-id><article-id custom-type="elpub" pub-id-type="custom">medsovet-9663</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>РАЦИОНАЛЬНАЯ ФАРМАКОТЕРАПИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RATIONAL PHARMACOTHERAPY</subject></subj-group></article-categories><title-group><article-title>Динамика показателей респираторной функции у пациентки с рефрактерной, серопозитивной по антителам к ацетилхолиновому рецептору миастенией на фоне лечения экулизумабом: клиническое наблюдение</article-title><trans-title-group xml:lang="en"><trans-title>Respiratory function dynamics in a patient with refractory AChR-seropositive myasthenia gravis under eculizumab treatment: A case report</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3484-6165</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанова</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanova</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Степанова Светлана Борисовна, к.м.н., доцент кафедры нервных болезней </p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Svetlana B. Stepanova, Cand. Sci. (Med.), Associate Professor of the Department of Nervous Diseases </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">sveta_step@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-7414-3804</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белогорохов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Belogorokhov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белогорохов Вениамин Сергеевич, старший лаборант Института пульмонологии</p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Veniamin S. Belogorokhov, Senior Laboratory Assistant, Institute of Pulmonology </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">benjaminbelogorohov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5848-7235</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпова</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpova</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Карпова Мария Ильинична, д.м.н., заведующая кафедрой нервных болезней </p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Maria I. Karpova, Dr. Sci. (Med.), Head of the Department of Nervous Diseases </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">kmi_2008@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3531-3491</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Антонов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Antonov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антонов Владимир Николаевич, д.м.н., профессор кафедры терапии Института дополнительного профессионального образования </p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Vladimir N. Antonov, Dr. Sci. (Med.), Professor of the Department of Therapy, Institute of Additional Professional Education </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p><p> </p></bio><email xlink:type="simple">ant-vn@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0877-6554</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Игнатова</surname><given-names>Г. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Ignatova</surname><given-names>G. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игнатова Галина Львовна, д.м.н., заведующая кафедрой терапии Института дополнительного профессионального образования</p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Galina L. Ignatova, Dr. Sci. (Med.), Head of the Department of Therapy, Institute of Additional Professional Education</p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">iglign@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0570-1135</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Родионова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rodionova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Родионова Ольга Васильевна, к.м.н., доцент кафедры терапии Института дополнительного профессионального образования </p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Olga V. Rodionova, Cand. Sci. (Med.), Associate Professor of the Department of Therapy, Institute of Additional Professional Education </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">olgalim0505@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-0025-342X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романова</surname><given-names>Д. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanova</surname><given-names>D. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Романова Дарья Константиновна, ординатор кафедры нервных болезней </p><p>454092, Челябинск, ул. Воровского, д. 64</p></bio><bio xml:lang="en"><p>Daria K. Romanova, Resident of the Department of Nervous Diseases </p><p>64, Vorovskiy St., Chelyabinsk, 454092</p></bio><email xlink:type="simple">romdarkon0908@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Уральский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2025</year></pub-date><volume>0</volume><issue>20</issue><fpage>187</fpage><lpage>192</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Степанова С.Б., Белогорохов В.С., Карпова М.И., Антонов В.Н., Игнатова Г.Л., Родионова О.В., Романова Д.К., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Степанова С.Б., Белогорохов В.С., Карпова М.И., Антонов В.Н., Игнатова Г.Л., Родионова О.В., Романова Д.К.</copyright-holder><copyright-holder xml:lang="en">Stepanova S.B., Belogorokhov V.S., Karpova M.I., Antonov V.N., Ignatova G.L., Rodionova O.V., Romanova D.K.</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.med-sovet.pro/jour/article/view/9663">https://www.med-sovet.pro/jour/article/view/9663</self-uri><abstract><p>Миастения гравис (МГ) представляет собой аутоиммунное заболевание, характеризующееся образованием антител к постсинаптической мембране нервно-мышечного синапса в произвольных мышцах. Среди всех проявлений МГ наиболее тяжелым является дыхательная дисфункция, возникающая как следствие слабости диафрагмы, межреберных и вспомогательных мышц, а также мышц глотки и гортани. Проведен анализ дыхательных нарушений у пациентки 29 лет, страдающей высокоактивной рефрактерной генерализованной МГ с ювенильным дебютом и наличием антител к ацетилхолиновому рецептору. Изучены показатели спирометрии, импульсной осциллометрии, диффузионной способности легких, а также силы дыхательных мышц. Выявлено выраженное нарушение силы дыхательных мышц, а также признаки бронхиальной астмы с преобладающим поражением мелких дыхательных путей, которая, вероятно, является аутоиммунным коморбидным состоянием и представляет собой неэозинофильный эндотип воспаления дыхательных путей. Пациентка начала получать таргетную иммунологическую терапию миастении моноклональными антителами к С5-компоненту комплемента. После начала терапии функциональная оценка дыхательной системы была проведена в динамике, выявлено улучшение респираторной функции по показателям: жизненная емкость легких, форсированная жизненная емкость легких и объем форсированного выдоха, диффузионная способность легких, что подчеркивает роль ингибиторов комплемента в лечении нервно-мышечной дисфункции. Однако показатели силы инспираторных и экспираторных мышц (максимальное давление на вдохе и выдохе) не изменились. Исследование функции внешнего дыхания является необходимым условием для уточнения состояния дыхательной системы, силы мышц, исключения сопутствующей патологии легких и бронхов, а исследование параметров дыхания в динамике позволяет объективизировать эффективность таргетной терапии.</p></abstract><trans-abstract xml:lang="en"><p>Myasthenia gravis (MG) is an autoimmune disease characterized by the formation of antibodies to the postsynaptic membrane of the neuromuscular junction in voluntary muscles. Among all manifestations of MG, the most severe is respiratory dysfunction, which results from the weakness of the diaphragm, intercostal and accessory muscles, as well as pharyngeal and laryngeal muscles. An analysis of respiratory disorders was conducted in a 29-year-old female patient suffering from highly active, refractory, generalized MG with juvenile onset and anti-acetylcholine receptor antibodies. Parameters of spirometry, impulse oscillometry, lung diffusion capacity (DLCO), and respiratory muscle strength were studied. Significant impairment of respiratory muscle strength was revealed, along with signs of bronchial asthma with predominant small airway involvement, which is likely an autoimmune comorbid condition and represents a non-eosinophilic endotype of airway inflammation. The patient began receiving targeted immunological therapy for myasthenia with monoclonal antibodies against the C5 complement component. After the initiation of therapy, a dynamic functional assessment of the respiratory system was conducted, revealing an improvement in respiratory function based on parameters such as vital capacity, forced vital capacity and forced expiratory volume in one second, and DLCO, which highlights the role of complement inhibitors in treating neuromuscular dysfunction. However, parameters of inspiratory and expiratory muscle strength (maximal inspiratory and expiratory pressures, MIP and MEP) did not change. Pulmonary function testing is essential for clarifying the state of the respiratory system and muscle strength, ruling out concomitant lung and bronchial pathology, while dynamic assessment of respiratory parameters allows for objective evaluation of the efficacy of targeted therapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>миастения гравис</kwd><kwd>дыхательные нарушения</kwd><kwd>миастенический криз</kwd><kwd>ингибитор С5-компонента комплемента</kwd><kwd>экулизумаб</kwd><kwd>обструкция бронхов</kwd><kwd>бронхиальная астма с поражением мелких дыхательных путей</kwd></kwd-group><kwd-group xml:lang="en"><kwd>myasthenia gravis</kwd><kwd>respiratory disorders</kwd><kwd>myasthenic crisis</kwd><kwd>C5 complement component inhibitor</kwd><kwd>eculizumab</kwd><kwd>bronchial obstruction</kwd><kwd>small airway asthma</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">Gilhus NE, Tzartos S, Evoli A, Palace J, Burns TM, Verschuuren JJGM. 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