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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">Almanac of Clinical Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Almanac of Clinical Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Альманах клинической медицины</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-0505</issn><issn publication-format="electronic">2587-9294</issn><publisher><publisher-name xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">353</article-id><article-id pub-id-type="doi">10.18786/2072-0505-2016-44-3-317-323</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">THE INFLUENCE OF NEUTRALIZING ANTIBODIES TO INTERFERON-BETA ON PROGRESSION OF MULTIPLE SCLEROSIS</article-title><trans-title-group xml:lang="ru"><trans-title>ВЛИЯНИЕ НЕЙТРАЛИЗУЮЩИХ АНТИТЕЛ К ИНТЕРФЕРОНУ-БЕТА НА ПРОГРЕССИРОВАНИЕ РАССЕЯННОГО СКЛЕРОЗА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lizhdvoy</surname><given-names>V. Yu.</given-names></name><name xml:lang="ru"><surname>Лиждвой</surname><given-names>В. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Senior Research Fellow, Department of Neurology</p><p>61/2–10 Shchepkina ul., Moscow, 129110</p><p>Tel.: +7 (495) 684 57 38</p></bio><bio xml:lang="ru"><p>неврологическое отделение</p><p>ст. науч. сотр. </p><p>129110, г. Москва, ул. Щепкина, 61/2–10</p><p>Тел.: +7 (495) 684 57 38</p></bio><email>lijdvoy@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ospel'nikova</surname><given-names>T. P.</given-names></name><name xml:lang="ru"><surname>Оспельникова</surname><given-names>Т. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Senior Research Fellow, Laboratory of Interferonogenesis</p><p>18 Gamalei ul., Moscow, 123098</p></bio><bio xml:lang="ru"><p>лаборатория интерфероногенеза</p><p>ст. науч. сотр. </p><p>123098, г. Москва, ул. Гамалеи, 18</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kotov</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Котов</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Professor; Head of Department of Neurology; Head of Chair of Neurology, Postgraduate Training Faculty</p><p>61/2 Shchepkina ul., Moscow, 129110</p></bio><bio xml:lang="ru"><p>неврологическое отделение</p><p>факультет усовершенствования врачей</p><p>кафедра неврологии</p><p>д-р мед. наук, профессор, руководитель отделения, заведующий кафедрой</p><p>129110, г. Москва, ул. Щепкина, 61/2</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</institution></aff><aff><institution xml:lang="ru">ГБУЗ МО «Московский областной научно-исследовательский клинический институт им. М.Ф. Владимирского»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.F. Gamaleya Research Institute of Epidemiology and Microbiology</institution></aff><aff><institution xml:lang="ru">ФГБУ «Научно-исследовательский институт эпидемиологии и микробиологии имени почетного академика Н.Ф. Гамалеи» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2016-05-15" publication-format="electronic"><day>15</day><month>05</month><year>2016</year></pub-date><volume>44</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>317</fpage><lpage>323</lpage><history><date date-type="received" iso-8601-date="2016-07-21"><day>21</day><month>07</month><year>2016</year></date><date date-type="accepted" iso-8601-date="2016-07-21"><day>21</day><month>07</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2016, Lizhdvoy V.Y., Ospel'nikova T.P., Kotov S.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Лиждвой В.Ю., Оспельникова Т.П., Котов С.В.</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Lizhdvoy V.Y., Ospel'nikova T.P., Kotov S.V.</copyright-holder><copyright-holder xml:lang="ru">Лиждвой В.Ю., Оспельникова Т.П., Котов С.В.</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://almclinmed.ru/jour/article/view/353">https://almclinmed.ru/jour/article/view/353</self-uri><abstract xml:lang="en"><p><bold>Background:</bold> Neutralizing antibodies (NAbs) affect the effectiveness of interferon therapy in patients with multiple sclerosis; however, this influence cannot be considered as unequivocal. NAbs formation is determined by several factors, such as frequency and duration of administration, interferon-β (IFN-β) formulation and the patient's genotype. It has been found that NAb titers vary over time. <bold>Aim:</bold> To assess the levels of NAbs to IFN-β in patients with multiple sclerosis and to investigate their relationship to disease progression. <bold>Materials and methods:</bold> We analyzed serum samples from 83  multiple sclerosis patients after a  long-term IFN-β-1b treatment; NAbs detection reaction was performed by assessment of their cytopathic effect. <bold>Results:</bold> NAbs were found in 63.9%  (53  of 83) of patients with duration of IFN-β-1b treatment of 33.3±17.6 months. All NAb-positive patients were treated with highdose IFN-β. Patients with titers&gt;800  LU (n=28) demonstrated a  trend towards more advanced neurologic deficit on the Expanded Disability Status Scale (EDSS), compared to the patients with normal NAbs titers (0  to 20  LU, n=30) and intermediate titers (20 to 800 LU, n=25) (p&gt;0.05). The exacerbation rate in the group with NAbs titers from 20  to 800  LU was insignificantly lower than that in the group with NAbs&gt;800 and in the NAb-negative patients (p&gt;0.05). <bold>Conclusion:</bold> Testing for NAbs may be a promising method for monitoring of IFN-β therapy in multiple sclerosis. There was a trend towards more pronounced neurological deficit in patients with high NAbs titers, but paradoxical data on a high rate of exacerbations in NAb-negative patients requires further study. </p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность.</bold> У  больных рассеянным склерозом нейтрализующие антитела (НАТ) оказывают влияние на эффективность интерферонотерапии, однако оно расценивается неоднозначно. Синтез НАТ определяется несколькими факторами: продолжительностью рассеянного склероза и его течением, частотой и длительностью введения интерферона, формулой препарата интерферона-бета (ИФН-β), генотипом пациента. Отмечено, что титры НАТ меняются с  течением времени. <bold>Цель </bold>– оценить уровень НАТ к ИФН-β- 1b у больных рассеянным склерозом и изучить взаимосвязь с прогрессированием заболевания. <bold>Материал и  методы.</bold> Обследована сыворотка крови 83  пациентов с  рассеянным склерозом после длительной терапии ИФН-β-1b, проведена реакция по выявлению НАТ методом оценки цитопатического эффекта. <bold>Результаты.</bold> НАТ выявлены у 63,9% (53 из 83) пациентов с длительностью применения ИФН-β-1b 33,3±17,6  месяца. Все НАТ-положительные пациенты получали высокодозную терапию ИФН-β. В  группе пациентов с  титрами НАТ больше 800  ЛЕ (n=28) наблюдалась тенденция к  более выраженному неврологическому дефициту по шкале инвалидизации EDSS по сравнению с пациентами с нормальными (от 0 до 20 ЛЕ, n=30) и средними (от 20 до 800 ЛЕ, n=25) титрами НАТ (p&gt;0,05). В группе пациентов с титрами НАТ от 20 до 800 ЛЕ частота обострений была несколько ниже, чем в группах больных с высоким и нормальным уровнем НАТ (p&gt;0,05). <bold>Заключение.</bold> Тестирование НАТ может оказаться перспективным методом мониторинга терапии ИФН-β при рассеянном склерозе. У  пациентов с  высокими титрами НАТ была отмечена тенденция к  повышению степени неврологического дефицита, но парадоксальные данные по высокой частоте обострений у пациентов с  отсутствием НАТ требуют дальнейшего изучения. </p></trans-abstract><kwd-group xml:lang="en"><kwd>multiple sclerosis</kwd><kwd>interferon-β</kwd><kwd>neutralizing antibodies</kwd><kwd>duration of treatment</kwd><kwd>EDSS</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рассеянный склероз</kwd><kwd>интерферон-бета</kwd><kwd>нейтрализующие антитела</kwd><kwd>длительность терапии</kwd><kwd>шкала инвалидизации EDSS</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Ziemssen T, De Stefano N, Pia Sormani M, Van Wijmeersch B, Wiendl H, Kieseier BC. Optimizing therapy early in multiple sclerosis: an evidence-based view. 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