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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Infection and Immunity</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Infection and Immunity</journal-title><trans-title-group xml:lang="ru"><trans-title>Инфекция и иммунитет</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-7619</issn><issn publication-format="electronic">2313-7398</issn><publisher><publisher-name xml:lang="en">SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">2043</article-id><article-id pub-id-type="doi">10.15789/2220-7619-PVO-2043</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL 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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Predictive value of specific cytokines for lethal COVID-19 outcome</article-title><trans-title-group xml:lang="ru"><trans-title>Прогнозная значимость специфических цитокинов в отношении летального исхода COVID-19</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Arsentieva</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Арсентьева</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Biology), Senior Researcher, Laboratory of Molecular Immunology</p></bio><bio xml:lang="ru"><p>к.б.н., старший научный сотрудник лаборатории молекулярной иммунологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Liubimova</surname><given-names>N. E.</given-names></name><name xml:lang="ru"><surname>Любимова</surname><given-names>Н. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Biology), Researcher, Laboratory of Molecular Immunology</p></bio><bio xml:lang="ru"><p>к.б.н., научный сотрудник лаборатории молекулярной иммунологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Batsunov</surname><given-names>O. K.</given-names></name><name xml:lang="ru"><surname>Бацунов</surname><given-names>О. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular Immunology</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной иммунологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Korobova</surname><given-names>Z. R.</given-names></name><name xml:lang="ru"><surname>Коробова</surname><given-names>З. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Allergologist-Immunologist</p></bio><bio xml:lang="ru"><p>лаборант-исследователь лаборатории молекулярной иммунологии</p></bio><email>zoia-korobova@yandex.ru</email><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuznetsova</surname><given-names>R. N.</given-names></name><name xml:lang="ru"><surname>Кузнецова</surname><given-names>Р. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Allergologist-Immunologist</p></bio><bio xml:lang="ru"><p>к.м.н., врач-аллерголог-иммунолог</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rubinstein</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Рубинштейн</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>6<sup>th</sup> year Student</p></bio><bio xml:lang="ru"><p>студент 6 курса</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stanevich</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Станевич</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Infectious Disease Physician</p></bio><bio xml:lang="ru"><p>врач-инфекционист</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lebedeva</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Лебедева</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Physician, Emergency Department</p></bio><bio xml:lang="ru"><p>врач-терапевт стационарного отделения скорой медицинской помощи</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vorobyev</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Воробьев</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Nephrologist, Assistant Professor, Department of Nephrology</p></bio><bio xml:lang="ru"><p>врач-нефролог, ассистент кафедры нефрологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vorobieva</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Воробьева</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Physician, Assistant Professor, Department of Propaedeutics of Internal Diseases</p></bio><bio xml:lang="ru"><p>врач-терапевт, ассистент кафедры пропедевтики внутренних болезней</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kulikov</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Куликов</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Head of the Department of Propaedeutics of Internal Diseases</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, зав. кафедрой пропедевтики внутренних болезней</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gavrilova</surname><given-names>E. G.</given-names></name><name xml:lang="ru"><surname>Гаврилова</surname><given-names>E. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Anesthesiologist-Resuscitator of the Highest Category, Assistant Professor, Resuscitation and Anaesthesiology Department</p></bio><bio xml:lang="ru"><p>к.м.н., врач анестезиолог-реаниматолог высшей категории, доцент кафедры анестезиологии и реаниматологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pevtcov</surname><given-names>D. E.</given-names></name><name xml:lang="ru"><surname>Певцов</surname><given-names>Д. Э.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Transfusiologist, Head of the Blood Transfusion Department</p></bio><bio xml:lang="ru"><p>руководитель отделения переливания крови, врач-трансфузиолог НИИ детской онкологии, гематологии и трансплантологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Polushin</surname><given-names>Yu. S.</given-names></name><name xml:lang="ru"><surname>Полушин</surname><given-names>Ю. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>RAS Full Member, PhD, MD (Medicine), Professor, Head of the Resuscitation and Anaesthesiology Department</p></bio><bio xml:lang="ru"><p>академик РАН, д.м.н., профессор, зав. кафедрой анестезиологии и реанимации</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shlyk</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Шлык</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Deputy Head Physician</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, зам. главного врача отделения неотложной помощи</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Totolian</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Тотолян</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>RAS Full Member, PhD, MD (Medicine), Professor</p></bio><bio xml:lang="ru"><p>академик РАН, д.м.н., профессор, директор ФБУН НИИ эпидемиологии и микробиологии</p></bio><email>raknv@mail.ru</email><xref ref-type="aff" rid="aff7"/><xref ref-type="aff" rid="aff8"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">St. Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">ФБУН НИИ эпидемиологиии и микробиологии имени Пастера</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">ФБУН НИИ эпидемиологиии и микробиологии имени Пастера</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pavlov First St. Petersburg State Medical University</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет им. И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru"></institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Pavlov First St. Petersburg State Medical University</institution></aff><aff><institution xml:lang="ru">ФБУН НИИ эпидемиологиии и микробиологии имени Пастера</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет им. И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">St. Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет им. И.П. Павлова</institution></aff></aff-alternatives><aff id="aff8"><institution>Pavlov First St. Petersburg State Medical University</institution></aff><pub-date date-type="preprint" iso-8601-date="2022-10-11" publication-format="electronic"><day>11</day><month>10</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-11-16" publication-format="electronic"><day>16</day><month>11</month><year>2022</year></pub-date><volume>12</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>859</fpage><lpage>868</lpage><history><date date-type="received" iso-8601-date="2022-09-28"><day>28</day><month>09</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-09-28"><day>28</day><month>09</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Arsentieva N.A., Liubimova N.E., Batsunov O.K., Korobova Z.R., Kuznetsova R.N., Rubinstein A.A., Stanevich O.V., Lebedeva A.A., Vorobyev E.A., Vorobieva S.V., Kulikov A.N., Gavrilova E.G., Pevtcov D.E., Polushin Y.S., Shlyk I.V., Totolian A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Арсентьева Н.А., Любимова Н.Е., Бацунов О.К., Коробова З.Р., Кузнецова Р.Н., Рубинштейн А.А., Станевич О.В., Лебедева А.А., Воробьев Е.А., Воробьева С.В., Куликов А.Н., Гаврилова E.Г., Певцов Д.Э., Полушин Ю.С., Шлык И.В., Тотолян А.А.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Arsentieva N.A., Liubimova N.E., Batsunov O.K., Korobova Z.R., Kuznetsova R.N., Rubinstein A.A., Stanevich O.V., Lebedeva A.A., Vorobyev E.A., Vorobieva S.V., Kulikov A.N., Gavrilova E.G., Pevtcov D.E., Polushin Y.S., Shlyk I.V., Totolian A.A.</copyright-holder><copyright-holder xml:lang="ru">Арсентьева Н.А., Любимова Н.Е., Бацунов О.К., Коробова З.Р., Кузнецова Р.Н., Рубинштейн А.А., Станевич О.В., Лебедева А.А., Воробьев Е.А., Воробьева С.В., Куликов А.Н., Гаврилова E.Г., Певцов Д.Э., Полушин Ю.С., Шлык И.В., Тотолян А.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://iimmun.ru/iimm/article/view/2043">https://iimmun.ru/iimm/article/view/2043</self-uri><abstract xml:lang="en"><p>In our study, we aimed to evaluate the significance of specific cytokines in blood plasma as predictive markers of COVID-associated mortality. Materials and methods. In plasma samples of 29 patients with PCR-confirmed COVID-19 we measured the concentrations of 47 molecules. These molecules included: interleukins and selected pro-inflammatory cytokines (IL-1α, IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-9, IL-12 (p40), IL-12 (p70), IL 13, IL-15, IL-17A/CTLA8, IL-17-E/IL-25, IL-17F, IL-18, IL-22, IL-27, IFNα2, IFNγ, TNFα, TNFβ/Lymphotoxin-α(LTA)); chemokines (CCL2/MCP-1, CCL3/MIP-1α, CCL4/MIP-1β, CCL7/MCP-3, CCL11/Eotaxin, CCL22/MDC, CXCL1/GROα, CXCL8/IL-8, CXCL9/MIG, CXCL10/IP-10, CX3CL1/Fractalkine); anti-inflammatory cytokines (IL-1Ra, IL-10); growth factors (EGF, FGF-2/FGF-basic, Flt-3 Ligand, G-CSF, M-CSF, GM-CSF, PDGF-AA, PDGFAB/BB, TGFα, VEGF-A); and sCD40L. We used multiplex analysis based on xMAP technology (Luminex, USA) using Luminex MagPix. As controls, we used plasma samples of 20 healthy individuals. Based on the results, we applied Receiver Operating Characteristic (ROC) analysis and Area Under Curve (AUC) values to compare two different predictive tests and to choose the optimal division point for disease outcome (survivors/non-survivors). To find optimal biomarker combinations, we as used cytokines concentrations as dependent variables to grow a regression tree using JMP 16 Software.Results. Out of 47 studied cytokines/chemokines/growth factors, we picked four pro-inflammatory cytokines as having high significance in evaluation of COVID-19 outcome: IL-6, IL-8, IL-15, and IL-18. Based on the results received, we assume that the highest significance in terms of predicting the outcome of acute COVID-19 belongs to IL-6 and IL-18. Conclusion. Analyzing concentrations of IL-6 and IL-18 before administering treatment may prove valuable in terms of outcome prognosis.</p></abstract><trans-abstract xml:lang="ru"><p>Целью настоящего исследования была оценка значимости специфических цитокинов в плазме крови в качестве прогностических маркеров смертности, связанных с COVID-19. <italic>Материалы и методы</italic>. В образцах плазмы 29 пациентов с ПЦР-подтвержденным COVID-19 проводилось определение концентрации 47 молекул: интерлейкинов и ряда провоспалительных цитокинов (IL-1α, IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-9, IL- 12 (p40), IL-12 (p70), IL-13, IL-15, IL-17A/CTLA8, IL-17-E/IL-25, IL-17F, IL-18, IL-22, IL- 27, IFNα2, IFNγ, TNFα, TNFβ/лимфотоксин-α(LTA)); хемокинов (CCL2/MCP-1, CCL3/MIP-1α, CCL4/MIP-1β, CCL7/MCP-3, CCL11/эотаксин, CCL22/MDC, CXCL1/GROα, CXCL8/IL-8, CXCL9/MIG, CXCL10/IP-10, CX-3CL1/фракталкин); противовоспалительных цитокинов (IL 1Ra, IL-10); факторы роста (EGF, FGF-2/FGFbasic, Flt-3 Ligand, G-CSF, M-CSF, GM-CSF, PDGF-AA, PDGFAB/BB, TGFα, VEGF-A); и sCD40L. Для этого использовался мультиплексный анализ на основе технологии xMAP (Luminex, США) с на приборе Luminex MagPix. В качестве контроля использовались образцы плазмы 20 здоровых людей. Результаты исследования оценивались в ходе анализа операционных характеристик приемника (ROC) и значения площади под кривой (AUC) для сравнения двух разных прогностических тестов и выбора оптимальной точки разграничения для исхода заболевания (выжившие/невыжившие). Для поиска оптимальных комбинаций биомаркеров, в качестве зависимых переменных мы использовали концентрации цитокинов для построения дерева регрессии с применением программного обеспечения JMP 16. <italic>Результаты</italic>. Из 47 исследованных цитокинов/хемокинов/факторов роста мы выбрали четыре провоспалительных цитокина, имеющих большое значение для оценки исхода COVID-19: IL-6, IL-8, IL-15 и IL-18. На основании полученных результатов мы предполагаем, что наибольшую значимость с точки зрения прогнозирования исхода острого течения COVID-19 имеют IL-6 и IL-18. Выводы. Анализ концентраций IL-6 и IL-18 перед назначением лечения может быть важен с точки зрения оценки прогноза исхода COVID-19.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cytokines</kwd><kwd>decision trees</kwd><kwd>multiplex analysis</kwd><kwd>COVID-19</kwd><kwd>severity</kwd><kwd>interleukins</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>цитокины</kwd><kwd>деревья решений</kwd><kwd>мультиплексный анализ</kwd><kwd>COVID-19</kwd><kwd>тяжесть</kwd><kwd>интерлейкины</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">This research was funded by the Saint Petersburg Pasteur Institute within the framework of a State Task</institution></institution-wrap></funding-source><award-id>Registration No. 121030200299-3</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Арсентьева Н.А., Любимова Н.Е., Бацунов О.К., Коробова З.Р., Станевич О.В., Лебедева А.А., Воробьев Е.А., Воробьева С.В., Куликов А.Н., Лиознов Д.А., Шарапова М.А., Певцов Д.Э., Тотолян Арег А. 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