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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-DOA-2169</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2169</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>ИММУНОЛОГИЧЕСКИЕ МЕТОДЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>IMMUNOLOGICAL METHODS</subject></subj-group></article-categories><title-group><article-title>Определение антител к терапевтическим препаратам эритропоэтина: возможно ли создание универсальной тест-системы?</article-title><trans-title-group xml:lang="en"><trans-title>Detection of antibodies to erythropoietin-based drugs: is it possible to create the universal test system?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудряшова</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudryashova</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александра Михайловна Кудряшова — научный сотрудник лаборатории медицинской биотехнологии.</p><p>105064, Москва, ул. 1-я Дубровская, 15. Тел.: 8 (495) 674-54-97</p></bio><bio xml:lang="en"><p>Research Associate, Laboratory of Medical Biotechnology.</p><p>105064, Moscow, 1st Dubrovskaya str., 15. Phone: 7 (495) 674-54-97</p></bio><email xlink:type="simple">2238250@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Владимирович Борисов— врач-нефролог, заведующий отделением диализного центра.</p><p>Москва</p></bio><bio xml:lang="en"><p>Nephrologist, Head of Department, Dialysis Center.</p><p>Moscow</p></bio><email xlink:type="simple">bav278@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кольцова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Koltsova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Анатольевна Кольцова — врач-нефролог, заведующая отделением диализного центра.</p><p>Москва</p></bio><bio xml:lang="en"><p>Nephrologist, Head of Department, Dialysis Center/</p><p>Moscow</p></bio><email xlink:type="simple">doc.koltsova@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пушкина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pushkina</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Вячеславовна Пушкина — кандидат медицинских наук, главный врач.</p><p>Москва</p></bio><bio xml:lang="en"><p>PhD (Medicine), Chief Physician.</p><p>Moscow</p></bio><email xlink:type="simple">avpushkina@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ольга Васильевна Борисова — кандидат химических наук, заведующий лабораторией медицинской биотехнологии.</p><p>Москва</p></bio><bio xml:lang="en"><p>PhD (Chemistry), Head, Laboratory of Medical Biotechnology.</p><p>Moscow</p></bio><email xlink:type="simple">olga.v.borisova@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Научно-исследовательский институт вакцин и сывороток имени И.И. Мечникова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I. Mechnikov Research Institute of Vaccines and Sera</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Компания Фесфарм, ООО</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Fesfarm Company LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>22</day><month>06</month><year>2021</year></pub-date><volume>23</volume><issue>3</issue><fpage>605</fpage><lpage>612</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кудряшова А.М., Борисов А.В., Кольцова А.А., Пушкина А.В., Борисова О.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Кудряшова А.М., Борисов А.В., Кольцова А.А., Пушкина А.В., Борисова О.В.</copyright-holder><copyright-holder xml:lang="en">Kudryashova A.M., Borisov A.V., Koltsova A.A., Pushkina A.V., Borisova O.V.</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.mimmun.ru/mimmun/article/view/2169">https://www.mimmun.ru/mimmun/article/view/2169</self-uri><abstract><p>Целью данной работы является оценка влияния препарата эритропоэтина, используемого для получения иммуносорбента, на выявление IgG-антител к ЭПО иммуноферментным методом в сыворотках крови пациентов, проходящих терапию препаратами чрЭПО.</p><p>Проанализированы 294 сывороток крови пациентов, получавших препараты эритропоэтина и 127 образцов пациентов, не получавших препараты чрЭПО. Исследование проводили методом твердофазного ИФА путем связывания исследуемых препаратов чрЭПО на планшете с иммобилизованными моноклональными антителами к ЭПО.</p><p>Выявление антител к эритропоэтину проводили с использованием мышиных моноклональных антител к IgG, IgG1 и IgG4 человека, конъюгированных с пероксидазой хрена. В работе исследовали препараты: эритропоэтин рекомбинантный человеческий рчЭПО-бета (Shandong Kexing Bioproducts), европейский стандарт эритропоэтина BRP 3, коммерческие препараты Аранесп (Amgen Europe B.V), Мирцера (F. Hoffmann-La Roche, Ltd.), Эпрекс (ОО «Джонсон &amp; Джонсон»), Эральфон (ЗАО «ФармФирма «Сотекс»).</p><p>Чувствительность характеризовали индексом позитивности (ИП), вычисляемом по формуле ИП = ОПобразца/ОПпорог., где ОПпорог. = ОПср.К- + 3SD, где ОПср.К— среднее арифметическое значение регистрируемого сигнала для выборки сывороток крови пациентов, никогда не получавших препараты эритропоэтина, SD-стандартное отклонение. Результаты оценивали как положительные с ИП &gt; 1,1 и отрицательные с ИП &lt; 0,9. Результаты в диапазоне 0,9 ≤ ИП &lt; 1,1 рассматривали как неопределенные.</p><p>Из 294 проанализированных образцов при определении суммарных специфических IgG-антител 32 образца оценивали как положительные или неопределенные во всех случаях, при этом доля неопределенных была выявлена в 1,0-1,7% образцов. Из них антитела субкласса IgG1 были обнаружены у 50-56,3% пациентов, антитела субкласса IgG4 у 43,8-50% пациентов. Тест Манна-Уитни показал достоверное различие между исследуемыми образцами по сравнению с контрольной группой для всех модификаций ИФА (р = 0,001). Тест Краскела-Уоллиса не выявил существенных различий для пяти выборок данных по ИП, полученных при иммунохимической иммобилизаций различных препаратов ЭПО (р = 0,05).</p><p>Коэффициент корреляции индексов позитивности находился в диапазоне 0,99-0,96 для суммарных IgG и &gt; 0,98 для двух подклассов антител. Коэффициент линейной регрессии был близок к единице, что указывает на незначительные различия в чувствительности сравниваемых методик.</p><p>Проведенные исследования указывают на возможность определять антитела к эритропоэтину у пациентов, получавших различные препараты чрЭПО, в одной тест-системе, что открывает возможность для разработки универсальной коммерческой тест-системы.</p></abstract><trans-abstract xml:lang="en"><p>Our aim was to compare different immobilized erythropoietin (EPO) preparations for their ability to detect anti-EPO IgG antibodies in blood sera of EPO-treated patients with ELISA technique. 294 serum samples of the patients treated with erythropoietin were analyzed. 127 serum samples of patients who did not receive recombinant human EPO (rhEPO) were studied for comparative analysis. ELISA assay was performed, and different rhEPO drugs were immobilized on the anti-EPO monoclonal antibody-coated plates. Horseradish peroxidase-conjugated mouse monoclonal antibodies to human IgG, IgG1, and IgG4 was used for detection. The following drugs were studied: recombinant human erythropoietin rhEPO-beta (Shandong Kexing Bioproducts), European standard of erythropoietin BRP 3, commercial drugs Aranesp (Amgen Europe B.V.), Mircera (F. Hoffmann-La Roche Ltd.), Eprex (Johnson &amp; Johnson LLC), Eralfon (Pharmaceutical Company Sotex). The sensitivity of the method was expressed as a positivity index (IP). IP calculated as the ratio of OD from tested sera to OD at the cut-off levels. The latter was assumed as a mean OD±SD for serum samples from EPO-naive patients. The results were evaluated as positive with IP &gt; 1.1, and negative at IP &lt; 0.9. Results in the range of 0.9 ≤ IP &lt; 1.1 were considered as unidentified. Among the 294 samples, 32 specimens were evaluated as positive or unidentified for total IgG anti-EPO antibodies. The unidentified samples were detected in 1.0-1.7% of all cases. IgG1 subclass antibodies were found in 50-56.3% of patients and IgG4 subclass antibodies, in 43.850% of the patients. Mann—Whitney test showed a significant difference between the test samples compared to control group for all the ELISA modifications (p = 0.001). The Kruskal—Wallis test did not show significant differences between the IP results obtained with any of five immobilized EPO drugs (p = 0.05). The correlation quotient of IP was in the range of 0.99-0.96 for total IgG and &gt; 0.98 for two subclasses of antibodies. Linear regression coefficients were close to one, thus indicating absence of significant differences in the sensitivity of the compared methods. This study indicate the opportunity of using the similar test systems to determine anti-EPO antibodies in the patients treated with various rhEPO drugs. Therefore, it is possible to develop a universal commercial test system to this purpose.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эритропоэтин</kwd><kwd>препараты чрЭПО</kwd><kwd>твердофазный ИФА</kwd><kwd>антитела к эритропоэтину</kwd><kwd>иммуногенность</kwd><kwd>сыворотка крови</kwd></kwd-group><kwd-group xml:lang="en"><kwd>erythropoietin</kwd><kwd>EPO drug</kwd><kwd>ELISA</kwd><kwd>anti-EPO antibodies</kwd><kwd>immunogenicity</kwd><kwd>human serum</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">Кудряшова А.М., Борисова О.В., Михайлова Н.А., Лоншаков Д.В., Катлинский А.В. Влияние методов иммобилизации эритропоэтина на чувствительность выявления специфических IgG антител в сыворотках крови экспериментальный животных // Журнал микробиологии, эпидемиологии и иммунобиологии, 2017. Т 6. 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