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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-IVE-2311</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2424</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>МАТЕРИАЛЫ ФОРУМА "ДНИ ИММУНОЛОГИИ В СПБ" 2021</subject></subj-group></article-categories><title-group><article-title>ЭКСПЕРИМЕНТАЛЬНАЯ ПЕРЕОРИЕНТАЦИЯ IN VITRO ФЕНОТИПА 4 СУБПОПУЛЯЦИЙ НЕЙТРОФИЛЬНЫХ ГРАНУЛОЦИТОВ ИЗ ПРОВОСПАЛИТЕЛЬНОГО К ПРОТИВОСПАЛИТЕЛЬНОМУ У ДЕТЕЙ С ХИРУРГИЧЕСКОЙ ГНОЙНОЙ ИНФЕКЦИЕЙ МЯГКИХ ТКАНЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>IN VITRO EXPERIMENTAL REWIRING OF 4 NEUTROPHILIC GRANULOCYTE SUBSETS FROM THE PRO-INFLAMMATORY TO THE ANTI-INFLAMMATORY PHENOTYPE IN CHILDREN WITH SURGICAL PURULENT INFECTION OF SOFT TISSUE</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>Нестерова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, главный научный сотрудник отдела клинической и экспериментальной иммунологии и молекулярной биологии Центральной научно-исследовательской лаборатории, 117513, Москва, Ленинский пр., 123-1;</p><p>профессор кафедры аллергологии и иммунологии ФПК МР Медицинского института, Москва</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Chief Research Associate, Department of Clinical and Experimental Immunology and Molecular Biology, Central Research Laboratory, 117513, Moscow, Leninsky ave., 123-1;</p><p>Professor, Department of Allergology and Immunology, Moscow</p></bio><email xlink:type="simple">inesterova1@yandex.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>Чудилова</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chudilova</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.б.н., доцент, заведующая отелом клинической и экспериментальной иммунологии и молекулярной биологии Центральной научноисследовательской лаборатории,</p><p>117513, Москва, Ленинский пр., 123-1</p></bio><bio xml:lang="en"><p>hD, MD (Biology), Associate Professor, Head, Department of Clinical and Experimental Immunology and Molecular Biology, Central Research Laboratory, </p><p>117513, Moscow, Leninsky ave., 123-1</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павленко</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavlenko</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры клинической иммунологии, аллергологии и лабораторной диагностики ФПК и ППС,</p><p>117513, Москва, Ленинский пр., 123-1;</p></bio><bio xml:lang="en"><p>Postgraduate Student, Department of Clinical Immunology, Allergology and Laboratory Diagnostics, </p><p>117513, Moscow, Leninsky ave., 123-1</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тараканов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarakanov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, заведующий кафедрой хирургических болезней детского возраста,</p><p>117513, Москва, Ленинский пр., 123-1;</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Head, Department of Surgical Diseases of Childhood,</p><p>117513, Moscow, Leninsky ave., 123-1</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Кубанский государственный медицинский университет» Министерства здравоохранения РФ;&#13;
ФГАОУ ВО «Российский университет дружбы народов» Министерства образования и науки РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kuban State Medical University;&#13;
Peoples’ Friendship University of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Кубанский государственный медицинский университет» Министерства здравоохранения РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kuban State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>10</month><year>2021</year></pub-date><volume>23</volume><issue>4</issue><fpage>819</fpage><lpage>824</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нестерова И.В., Чудилова Г.А., Павленко В.Н., Тараканов В.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Нестерова И.В., Чудилова Г.А., Павленко В.Н., Тараканов В.А.</copyright-holder><copyright-holder xml:lang="en">Nesterova I.V., Chudilova G.A., Pavlenko V.N., Tarakanov V.A.</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/2424">https://www.mimmun.ru/mimmun/article/view/2424</self-uri><abstract><p>Лечение детей раннего возраста с атипичными или рецидивирующими гнойными инфекциями мягких тканей (ГЗМТ), которые не демонстрируют хорошего ответа на хирургическое лечение и антибактериальные препараты, является наиболее сложным. ГЗМТ возникают на фоне нарушений функционирования иммунной системы и в первую очередь системы нейтрофильных гранулоцитов (НГ). Векторный эффект иммунотропной терапии на конкретную субпопуляцию NG может позволить корректировать дисфункции NG без ущерба для защиты хозяина, включая стратегии усиления, подавления или восстановления их функций.</p><p>Цель исследования: оценить в системе in vitro модулирующие эффекты влияния аргинил-альфа-аспартил-лизил-валил-тирозил-аргинин (ГП) на трансформированный фенотип 4 субпопуляций НГ, а также на функциональную активность НГ детей с гнойно-воспалительными заболеваниями мягких тканей. Исследованы образцы периферической крови (ПК) детей раннего возраста 2-4 лет: 17 детей с нетипично протекающими острыми ГЗМТ и 10 условно здоровых детей. На I этапе проведена сравнительная оценка содержания и фенотипа 4 субпопуляций НГ CD16+CD62L+СD63- , CD16+CD62L+СD63+, СD64- CD16+CD32+CD11b+, СD64+CD16+CD32+CD11b+, фагоцитарной и микробицидной функции НГ. На II этапе в системе in vitro определены эффекты ГП на НГ детей с ГЗМТ по изучаемым параметрам. Методом проточной цитометрии (FC500, Beckman Coulter, (США), конъюгаты МкАТ Beckman Coulter International S.A. (Франция)), определялось относительное количество НГ исследуемых субпопуляций и плотность экспрессии рецепторов (MFI). Для оценки фагоцитарной функции НГ использован микробиологический метод с оценкой завершенности фагоцитоза со S. аureus (штамм 209). Активность NADРН-оксидазы НГ исследовали в НСТ спонтанном тесте (НСТсп.) и в нагрузочном в системе in vitro (НСТст.). Сравнительное изучение образцов ПК условно здоровых детей и детей с ГЗМТ позволило выявить различные варианты трансформации фенотипа изучаемых субпопуляциях НГ, сопряженных с дефектами их функциональной активности. В системе in vitro были продемонстрированы эффекты ГП, проявляющиеся снижением количества CD16+CD62L+CD63+НГ и повышением CD16+CD62L+CD63- НГ, модуляцией негативно измененного фенотипа субпопуляций CD64- CD32+CD16+CD11b+НГ и CD64+CD32+CD16+CD11b+НГ, направленные на восстановление фагоцитарной функции и поддержания напряженности NADPH-оксидаз. В результате исследования установлено иммуномодулирующее действие ГП, которое проявляется в переориентации НГ с провоспалительного фенотипа на противовоспалительный, что может быть использовано в будущем при создании персонализированной таргетной иммунотерапии. Направлена на коррекцию неполноценного функционирования НГ у детей раннего возраста, страдающих ГЗМТ. </p></abstract><trans-abstract xml:lang="en"><p>Treatment of young children with atypical or recurrent purulent soft tissue infections (PSTD) that do not respond well to surgery and antibiotics is most challenging. PSTD occurs against the background of impaired functioning of the immune system and, first of all, the system of neutrophilic granulocytes (NG). The vector effect of immunotropic therapy on a specific NG subsets may allow the correction of NG dysfunctions without compromising host protection, including strategies to enhance, inhibit or restore their functions.</p><p>The aim of study: to evaluate in vitro the modulating effects of arginyl-alpha-aspartyl-lysyl-valyl-tyrosyl-arginine (HP) on the transformed phenotype of 4 NG subsets, as well as on the functional activity of NG in children with purulent-inflammatory soft tissue diseases.</p><p>We studied samples of peripheral blood (PB) from young children 2-4 years old: 17 children with atypical acute PSTD and 10 apparently healthy children. At stage I, a comparative assessment of the content and phenotype of 4 NG subsets CD16+CD62L+СD63- , CD16+CD62L+СD63+, СD64- CD16+CD32+CD11b+, СD64+CD16+CD32+CD11b+, phagocytic and microbicidal functions of NG was carried out. At stage II, the in vitro system determined the effects of HP on NG in children with PSTD according to the studied parameters. By the method of flow cytometry (FC500 “Beckman Coulter” (USA), conjugates of MkAT “Beckman Coulter International S.A.” (France)), the relative number of NGs of the studied subsets and the density of receptor expression (MFI) were determined. To assess the phagocytic function of NG a microbiological method was used to assess the completeness of phagocytosis with S. aureus (strain 209). The activity of NG NADPH oxidase was investigated in the NBT-spontaneous test (NBTsp.) and in the in vitro NBT-induced test (NBTind.). A comparative study of PB samples from conventionally healthy children and children with PSTD made it possible to identify various variants of transformation of the phenotype of the studied NG subsets, associated with defects in their functional activity. In the in vitro system the effects of HP were demonstrated, manifested by a decrease in the amount of CD16+CD62L+CD63+NG and an increase in CD16+CD62L+CD63- NG, modulation of the negatively altered phenotype of subsets CD64- CD32+CD16+CD11b+NG and CD64+CD32+CD16+CD11b+NG, aimed at restoring phagocytic function and maintaining the tension of NADPH oxidases.</p><p>As a result of the study it was found the immunomodulatory effects of HP, which is manifested in the reorientation of NG from the pro-inflammatory phenotype to the anti-inflammatory one, which can be used in the future when creating personalized targeted immunotherapy aimed at correcting defective functioning NG in early children, suffering from PSTD. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>нейтрофильные гранулоциты</kwd><kwd>субпопуляции</kwd><kwd>эксперимент in vitro</kwd><kwd>гексапептид аргинил-альфа-аспартиллизил-валил-тирозил-аргинин</kwd><kwd>гнойные заболевания мягких тканей</kwd><kwd>дети</kwd></kwd-group><kwd-group xml:lang="en"><kwd>neutrophilic granulocytes</kwd><kwd>subset</kwd><kwd>experiment in vitro</kwd><kwd>hexapeptide arginyl-alpha-aspartyl-lysyl-valyl-tyrosyl-arginine</kwd><kwd>purulent soft tissue diseases</kwd><kwd>children</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was funded by the RFBR according to the research project No. 20-315-90069.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Dal Ponte S., Alegretti A., Pilger D., Rezende G., Andrioli G., Ludwig H. 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