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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">527</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2023-13-1-68-74</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Validation of the Medical Research Council sum score (MRCss) for use in Russian-speaking patients with chronic inflammatory demyelinating polyneuropathy</article-title><trans-title-group xml:lang="ru"><trans-title>Валидация шкалы суммарной оценки мышечной силы (MRC sum score) для использования у русскоязычных пациентов с хронической воспалительной демиелинизирующей полинейропатией</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3956-6362</contrib-id><name-alternatives><name xml:lang="en"><surname>Suponeva</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Супонева</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9890-3552</contrib-id><name-alternatives><name xml:lang="en"><surname>Arestova</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Арестова</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Alina Safovna Arestova,</bold></p><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p><bold>Алина Сафовна Арестова,</bold></p><p>125367 Москва, Волоколамское шоссе, 80</p></bio><email>rizvanova.alina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5436-836X</contrib-id><name-alternatives><name xml:lang="en"><surname>Melnik</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Мельник</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9226-2870</contrib-id><name-alternatives><name xml:lang="en"><surname>Zimin</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Зимин</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3774-3070</contrib-id><name-alternatives><name xml:lang="en"><surname>Zaytsev</surname><given-names>A. B.</given-names></name><name xml:lang="ru"><surname>Зайцев</surname><given-names>А. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 8 Trubetskaya St., Moscow 119991</p></bio><bio xml:lang="ru"><p>119991 Москва, ул. Трубецкая, 8, стр. 2</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5434-4966</contrib-id><name-alternatives><name xml:lang="en"><surname>Yakubu</surname><given-names>A.</given-names></name><name xml:lang="ru"><surname>Якубу</surname><given-names>А.</given-names></name></name-alternatives><address><country country="US">United States</country></address><bio xml:lang="en"><p>116th Street and Broadway, New York 10027</p></bio><bio xml:lang="ru"><p>10027 Нью-Йорк, 116-я улица</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1706-089X</contrib-id><name-alternatives><name xml:lang="en"><surname>Sherbakova</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Щербакова</surname><given-names>Е. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5826-9112</contrib-id><name-alternatives><name xml:lang="en"><surname>Yusupova</surname><given-names>D. G.</given-names></name><name xml:lang="ru"><surname>Юсупова</surname><given-names>Д. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7924-3405</contrib-id><name-alternatives><name xml:lang="en"><surname>Grishina</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Гришина</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6026-3388</contrib-id><name-alternatives><name xml:lang="en"><surname>Gnedovskaya</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Гнедовская</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6338-0392</contrib-id><name-alternatives><name xml:lang="en"><surname>Piradov</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Пирадов</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Моscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Columbia University</institution></aff><aff><institution xml:lang="ru">Университет Колумбия</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-03-27" publication-format="electronic"><day>27</day><month>03</month><year>2023</year></pub-date><volume>13</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>68</fpage><lpage>74</lpage><history><date date-type="received" iso-8601-date="2023-03-27"><day>27</day><month>03</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-03-27"><day>27</day><month>03</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Suponeva N.A., Arestova A.S., Melnik E.A., Zimin A.A., Zaytsev A.B., Yakubu A., Sherbakova E.S., Yusupova D.G., Grishina D.A., Gnedovskaya E.V., Piradov M.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Супонева Н.А., Арестова А.С., Мельник Е.А., Зимин А.А., Зайцев А.Б., Якубу А., Щербакова Е.С., Юсупова Д.Г., Гришина Д.А., Гнедовская Е.В., Пирадов М.А.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Suponeva N.A., Arestova A.S., Melnik E.A., Zimin A.A., Zaytsev A.B., Yakubu A., Sherbakova E.S., Yusupova D.G., Grishina D.A., Gnedovskaya E.V., Piradov M.A.</copyright-holder><copyright-holder xml:lang="ru">Супонева Н.А., Арестова А.С., Мельник Е.А., Зимин А.А., Зайцев А.Б., Якубу А., Щербакова Е.С., Юсупова Д.Г., Гришина Д.А., Гнедовская Е.В., Пирадов М.А.</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/527">https://nmb.abvpress.ru/jour/article/view/527</self-uri><abstract xml:lang="en"><p><bold>Background</bold>. The use of rating scales and questionnaires is essential in an evaluation of disease course, treatment response, the disability level and quality of life in patients with chronic inflammatory demyelinating polyneuropathy. The Medical Research Council (MRC) scale and its modification Medical Research Council sum score (MRCss) are widely used for measurement of motor deficit in patients with neuromuscular disorders. However, its usage is limited by the absence of the validated version for Russian-speaking patients.</p><p><bold>Aim</bold>. To validate MRCss scale in patients with chronic inflammatory demyelinating polyneuropathy with development of a Russian version.</p><p><bold>Materials and methods</bold>. We enrolled 50 patients with chronic inflammatory demyelinating polyneuropathy (25 with typical chronic inflammatory demyelinating polyneuropathy and 25 with Lewis–Sumner syndrome). At the first step we conducted linguocultural ratification according to the standard protocol. At the second step the psychometric parameters were evaluated, such as reliability, validity and sensitivity.</p><p><bold>Results</bold>. The developed Russian version of MRCss scale demonstrated the high level of reliability, validity and sensitivity.</p><p><bold>Conclusion</bold>. As a result, we developed a validated Russian version of MRCss scale, recommended for clinical practice and research. </p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Использование международных шкал и опросников является неотъемлемой частью работы с пациентами с хронической воспалительной демиелинизирующей полинейропатией и позволяет объективно оценивать динамику состояния пациента, ответ на терапию, степень инвалидизации и качество жизни. Шкала Medical Research Council для оценки мышечной силы (MRC Muscle Scale) и ее модификация Medical Research Council sum score (MRCss) широко используются у пациентов с поражением периферического нейромоторного аппарата для оценки степени выраженности двигательного дефицита. Однако применение шкалы в Российской Федерации ограничено отсутствием русскоязычной, валидированной версии.</p><p><bold>Цель исследования</bold> – провести валидацию шкалы MRCss у пациентов с хронической воспалительной демиелинизирующей полинейропатией с разработкой русскоязычной версии</p><p><bold>Материалы и методы</bold>. В исследование включено 50 пациентов с хронической воспалительной демиелинизирующей полинейропатией (25 пациентов с типичным вариантом заболевания, 25 – с синдромом Льюиса–Самнера). Первым этапом проведена лингвистическая ратификация оригинальной англоязычной версии шкалы согласно общепринятым рекомендациям. На 2-м этапе валидации проведена оценка психометрических показателей разработанного русскоязычного варианта шкалы: надежности, содержательной валидности, чувствительности.</p><p><bold>Результаты</bold>. Получена русскоязычная версия шкалы MRCss, которая продемонстрировала высокий уровень надежности, чувствительности и валидности.</p><p><bold>Заключение</bold>. По результатам проведенной работы представлена валидированная, русскоязычная версия шкалы MRCss, рекомендованная для клинической и научно-исследовательской работы у русскоязычных пациентов. </p></trans-abstract><kwd-group xml:lang="en"><kwd>chronic inflammatory demyelinating polyneuropathy</kwd><kwd>polyneuropathy</kwd><kwd>validation</kwd><kwd>linguocultural ratification</kwd><kwd>MRCss</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хроническая воспалительная демиелинизирующая полинейропатия</kwd><kwd>полинейропатия</kwd><kwd>валидация</kwd><kwd>лингвокультурная адаптация</kwd><kwd>MRCss</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was carried out in the framework of the state assignment of the Research Center of Neurology.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания ФГБНУ «Научный центр неврологии».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Medical Research Council. 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