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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-COE-1879</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-1879</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Характеристика антител к эритропоэтину у пациентов, проходящих терапию препаратами рекомбинантного человеческого эритропоэтина</article-title><trans-title-group xml:lang="en"><trans-title>Characteristics of erythropoietin antibodies in patients treated with recombinant human erythropoietin</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>Кудряшова А.М. – научный сотрудник лаборатории медицинской биотехнологии</p><p>115088, Москва, ул. 1-я Дубровская, 15</p></bio><bio xml:lang="en"><p>Kudryashova A.M., Research Associate, Laboratory of Medical Biotechnology</p><p>115088, Moscow, 1st Dubrovskaya str., 15.</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>Нестеренко</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterenko</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нестеренко Л.Н. – к.х.н., ведущий научный сотрудник лаборатории клонирования вирусных геномов</p><p>115088, Москва, ул. 1-я Дубровская, 15</p></bio><bio xml:lang="en"><p>Nesterenko L.N., PhD (Сhemistry), Leading Research Associate, Viral Genome Cloning Laboratory</p><p>115088, Moscow, 1st Dubrovskaya str., 15.</p></bio><email xlink:type="simple">lnnesterenko3001@gmail.com</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>Генералова</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Generalova</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Генералова Г.А. – педиатр-нефролог</p><p>Москва</p></bio><bio xml:lang="en"><p>Generalova G.A., Pediatrician-Nephrologist</p><p>Moscow</p></bio><email xlink:type="simple">gangen@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>Абасеева</surname><given-names>Т. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Abasheeva</surname><given-names>T. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абасеева Т.Ю. – педиатр-нефролог</p><p>Москва</p></bio><bio xml:lang="en"><p>Abaseeva T.Yu., Pediatrician-Nephrologist</p><p>Moscow</p></bio><email xlink:type="simple">tatyanaab@mail.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>Михайлова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михайлова Н.А. – д.м.н., профессор, заведующая лабораторией протективных антигенов </p><p>115088, Москва, ул. 1-я Дубровская, 15</p></bio><bio xml:lang="en"><p>Mikhailova N.A., PhD, MD (Medicine), Professor, Head, Laboratory of Protective Antigens</p><p>115088, Moscow, 1st Dubrovskaya str., 15.</p></bio><email xlink:type="simple">n_michailova@inbox.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>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>Борисова О.В. – к.х.н., заведующая лабораторией медицинской биотехнологии </p><p>115088, Москва, ул. 1-я Дубровская, 15</p></bio><bio xml:lang="en"><p>Borisova O.V., PhD (Сhemistry), Head, Laboratory of Medical Biotechnology</p><p>115088, Moscow, 1st Dubrovskaya str., 15.</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">ФГБНУ «Научно-исследовательский институт вакцин и сывороток имени И.И. Мечникова»<country>Россия</country></aff><aff xml:lang="en">I. Mechnikov Research Institute of Vaccines and Sera<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Центр гравитационной хирургии крови и гемодиализа «ГБУЗ «Детская городская клиническая больница святого Владимира Департамента здравоохранения города Москвы»<country>Россия</country></aff><aff xml:lang="en">Center of Gravitational Surgery of Blood and Hemodialysis, Children’s City Clinical Hospital of St. Vladimir, Moscow Department of Health<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>01</month><year>2020</year></pub-date><volume>22</volume><issue>1</issue><fpage>143</fpage><lpage>152</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кудряшова А.М., Нестеренко Л.Н., Генералова Г.А., Абасеева Т.Ю., Михайлова Н.А., Борисова О.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Кудряшова А.М., Нестеренко Л.Н., Генералова Г.А., Абасеева Т.Ю., Михайлова Н.А., Борисова О.В.</copyright-holder><copyright-holder xml:lang="en">Kudryashova A.M., Nesterenko L.N., Generalova G.A., Abasheeva T.Y., Mikhailova N.A., Borisova O.V.</copyright-holder><license 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/1879">https://www.mimmun.ru/mimmun/article/view/1879</self-uri><abstract><p>Целью исследования является характеристика антител к эритропоэтину в сыворотках крови пациентов, проходящих терапию препаратами эритропоэтина. Проанализированы 106 сывороток крови пациентов, получавших препараты эритропоэтина. Для сравнительного анализа были исследованы 134 сыворотки пациентов, не получавших препараты ЭПО. Исследование проводили методом твердофазного ИФА при пассивной иммобилизации рчЭПО и иммунохимической через стептавидин-биотиновое взаимодействие. Выявление антител к эритропоэтину проводили с использованием мышиных моноклональных антител к IgG, IgG1, IgG2, IgG3 и IgG4 человека, конъюгированных с пероксидазой хрена, а при количественном определении – конъюгата протеина-А с пероксидазой. В качестве калибровочного стандарта применяли поликлональные антитела кролика к ЭПО человека с известной концентрацией. Для построения калибровочного графика были выбраны шесть калибровочных образцов в диапазоне концентрацией 16-1000 нг/мл. Предел обнаружения составил 12 нг/мл, а предел количественного обнаружения – 31 нг/мл. При иммунохимической иммобилизации частота выявления суммарных IgG-антител увеличилась в 3,2 раза, IgG1 – в 1,1 раз, IgG2 – в 1,25 раза, IgG3 – в 1,5 раза, IgG4 – в 1,7 раза. У большинства пациентов были обнаружены антитела со смешанным изотипом, в 3-х образцах были детектированы только IgG1- или IgG4-антитела к ЭПО. В выборке из 106 образцов IgМ-антитела не определялись, суммарные IgG-антитела были выявлены в 36,8% случаев, в 34% образцов их наличие было подтверждено выявлением антител хотя бы одного из подклассов. IgG1-антитела были выявлены в 83,3%, IgG4 – в 80,6% образцов, в которых присутствовали суммарные IgG-антитела. Во всех случаях антитела IgG2 и/или IgG3 подклассов были обнаружены в присутствии IgG1- или IgG4-антител. Концентрация антител составила 3,2-35,5 мкг/мл у 28 пациентов, у 8 пациентов уровень антител был более 50 мкг/мл, у 3-х находился ниже предела количественного обнаружения. Только в 6 образцах были выявлены антитела с индексом авидности более 50%. Иммунохимическая иммобилизация антигена привела к повышению чувствительности при определении специфических антител всех подклассов. IgG-антитела были выявлены более чем в трети сывороток крови пациентов, получавших препараты ЭПО, преимущественно определялись низкоавидные антитела IgG1- и IgG4-подклассов.</p></abstract><trans-abstract xml:lang="en"><p>Our aim was to characterize anti-EPO antibodies in serum samples of the patients treated with erythropoietin. 106 serum samples from the patients treated with erythropoietin (EPO) were collected and assayed. 134 serum samples of patients who did not receive EPO were taken for comparative analysis. The anti-EPO antibody detection was performed in ELISA test with rhEPO, by passive capture on ELISA plates, using steptavidin-biotin immunochemical system. Mouse monoclonal antibodies to human IgG, IgG1, IgG2, IgG3 and IgG4 conjugated to horseradish peroxidase were used to detect anti-EPO antibodies, and protein-A peroxidase conjugate was used for quantitative assays. Rabbit anti-human EPO polyclonal antibodies at known concentrations were used as a calibration standard. Six calibration samples at the concentration range of 16-1000 ng/ml were used to plot calibration curves. The lower detection limit was 12 ng/mL, and the quantitative detection limit was 31 ng/ml. Immunochemical capturing led to increasing of total IgG antibody detection by 3.2 times, IgG1 – by 1.1 times IgG2 – by 1.25 times, IgG3 – by 1.5 times, IgG4 – by 1.7 times. Antibodies of mixed isotype were found in most patients. IgG1 or IgG4 antibodies to EPO were determined only in 3 samples. Specific IgM was not detectable among 106 sera samples, whereas total IgG antibodies were detected in 36.8 % of cases. In 34% of sera, their presence was confirmed by detection of at least one of the subclasses. IgG1 antibody was detected in 83.3%; IgG4, in 80.6% of the samples positive for total IgG antibodies. In all cases, IgG2 and/or IgG3 were detected in presence of IgG1 or IgG4 antibodies. The antibody concentration was 3.2 to 35.5 µg/mL in sera from 28 patients, in 8 cases the level of antibodies was &gt; 50 µg/ml, however, being below the limit of quantitative detection in 3 patients. Only 6 samples contained antibodies with avidity index of &gt; 50%. Immunochemical capturing of the antigen led to increased sensitivity for detecting all subclasses of specific antibodies. The specific IgG antibodies to EPO were found in more than 1/3 of serum samples from the patients treated with erythropoietin. Low-avidity antibodies of IgG1 and IgG4 subclasses were determined in most cases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эритропоэтин</kwd><kwd>твердофазный ИФА</kwd><kwd>антитела</kwd><kwd>иммуногенность</kwd><kwd>авидность</kwd><kwd>сыворотки крови человека</kwd></kwd-group><kwd-group xml:lang="en"><kwd>erythropoietin</kwd><kwd>antibodies</kwd><kwd>ELISA</kwd><kwd>immunogenicity</kwd><kwd>avidity</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 к ЕПВ в сыворотках крови экспериментальный животных // Журнал микробиологии эпидемиологии и иммунологии, 2017. №. 6. С. 49-55. [Kudryashova A.M., Borisova O.V., Mikhailova N.A., Lonshakov D.V., Katlinsky A.V. 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