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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="brief-report" 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">17926</article-id><article-id pub-id-type="doi">10.15789/2220-7619-CPO-16580</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Short Communication</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Cytokine profile of COVID-19 convalescent plasma and its relationship to outcome of treated patients</article-title><trans-title-group xml:lang="ru"><trans-title>Цитокиновый профиль плазмы иммунной анти-COVID-19 и его связь с исходом заболевания пациентов при лечении иммунной плазмой</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Potapnev</surname><given-names>Michael P.</given-names></name><name xml:lang="ru"><surname>Потапнев</surname><given-names>Михаил Петрович</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p>DSc (Medicine), Professor, Head the Department of Cellular Biotechnologies</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, зав. отделом клеточных биотехнологий</p></bio><email>mpotapnev@yandex.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Maximovich</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Максимович</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p>Junior Researcher, Laboratory of Biology and Genetics of Stem Cells</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории биологии и генетики стволовых клеток</p></bio><email>mpotapnev@yandex.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dunayeu</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Дунаев</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p>PhD (Medicine), Transfusiologist</p></bio><bio xml:lang="ru"><p>к.м.н., врач-трансфузиолог</p></bio><email>mpotapnev@yandex.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Hushchina</surname><given-names>L. M.</given-names></name><name xml:lang="ru"><surname>Гущина</surname><given-names>Л. М.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p>Deputy Director for Transfusiology</p></bio><bio xml:lang="ru"><p>зам. директора по трансфузиологии</p></bio><email>mpotapnev@yandex.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karpenko</surname><given-names>F. N.</given-names></name><name xml:lang="ru"><surname>Карпенко</surname><given-names>Ф. Н.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p>PhD (Medicine), Director</p></bio><bio xml:lang="ru"><p>к.м.н., директор</p></bio><email>mpotapnev@yandex.by</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Republican Scientific and Practical Center for Transfusiology and Medical Biotechnologies</institution></aff><aff><institution xml:lang="ru">Республиканский научно-практический центр трансфузиологии и медицинских биотехнологий</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-04-30" publication-format="electronic"><day>30</day><month>04</month><year>2025</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>190</fpage><lpage>196</lpage><history><date date-type="received" iso-8601-date="2025-04-30"><day>30</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-04-30"><day>30</day><month>04</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Potapnev M.P., Maximovich A.V., Dunayeu I.A., Hushchina L.M., Karpenko F.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Потапнев М.П., Максимович А.В., Дунаев И.А., Гущина Л.М., Карпенко Ф.Н.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Potapnev M.P., Maximovich A.V., Dunayeu I.A., Hushchina L.M., Karpenko F.N.</copyright-holder><copyright-holder xml:lang="ru">Потапнев М.П., Максимович А.В., Дунаев И.А., Гущина Л.М., Карпенко Ф.Н.</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/17926">https://iimmun.ru/iimm/article/view/17926</self-uri><abstract xml:lang="en"><p>COVID-19 convalescent plasma (CCP) is considered as an important element of therapy for patients in the initial stages of the disease.The main therapeutic effect of CCP is associated with the presence of specific antiviral antibodies. Additionally, the immunomodulatory effect of CCP is considered as therapeutic where cytokines represented one of the main factors. The aim of the study was to evaluate the importance of cytokines and cytokine ratio of transfused CCP for the outcome of the disease in patients who received it during inpatient treatment of COVID-19. <italic>Materials and methods.</italic> The study included data from 111 patients with COVID-19 who received CCP. The cytokine content in the CCP was measured by enzyme immunoassay <italic>Results.</italic> It was found that elevated levels of interleukin-6 (IL-6) and interferon-gamma (IFNγ), but not IL-1β, IL-8, IL-10, IL-15, IP-10/CXCL10, MCP-1/CCL2 were detected in CCP transfused mainly to patients who had an unfavorable (fatal) outcome of the disease. Values of cytokine ratios of IFNγ/IL-10, IFNγ/IP-10, IFNγ/MCP-1, IL-6/IL-8, IL-6/IL-10, IL-6/IP-10, IL-6/IL-15 were also significantly increased in these CCP series as compared to CCP samples transfused to patients of the recovered group. Low levels of IL-6 and IFNγ, reduced level of cytokine ratios of IL-6/IP-10, IL-6/IL-15, IFNγ/MCP-1, IFNγ/IP-10, IFNγ/IL-15 were characteristic of CCP, which was transfused to patients, subsequently recovered. The level of IL-6 in the CCP samples transfused to the patients of the recovered group had a strong direct correlation (r = 0.9) with the cytokine ratios of IL-6/IL-10 and IL-6/IP-10, while in the group of the deceased patients there was no strong association (r = 0.6). IFNγ levels in the CCP showed a strong direct correlation with the values of all analyzed cytokine ratios (IFNγ/IL-10 (r = 0.9), IFNγ/IP-10 (r = 0.9), IFNγ/MCP-1 (r = 0.9)). The level of INF-γ in the CCP transfused to patients of the recovered group had a positive correlation with the cytokine ratios of IFNγ/IL-10 (r = 0.78), IFNγ/IP-10 (r = 0.9), IFNγ/MCP-1 (r = 0.75). The level of INFγ in the CCP transfused to patients of the deceased group had higher values of positive correlation with ratios of IFNγ/IL-10 (r = 0.96), IFNγ/IP-10 (r = 0.92), IFNγ/MCP-1 (r = 0.92). <italic>Conclusion.</italic> The level of cytokines IL-6 and IFNγ, the cytokine ratios based on them in the CCP may affect the outcome of COVID-19 in patients treated with CCP.</p></abstract><trans-abstract xml:lang="ru"><p>Плазма иммунная анти-COVID-19 (ССР) рассматривается как важный элемент терапии пациентов на начальных стадиях заболевания. Терапевтическое действие ССР связывают с наличием специфических противовирусных антител. Дополнительно в качестве терапевтического рассматривается иммуномодулирующее действие ССР, где цитокины считаются одними из основных факторов. Цель исследования — оценить значение цитокинов и балансов цитокинов перелитой ССР для исхода заболевания у пациентов, получавших ее при проведении стационарного лечения COVID-19. <italic>Материалы и методы.</italic> В исследование включены данные 111 пациентов с COVID-19, получавших ССР. Содержание цитокинов в ССР измерялось методом иммуноферментного анализа. <italic>Результаты.</italic> Установлено, что повышенный уровень интерлейкина-6 (IL-6) и интерферона- гамма (IFNγ), но не IL-1β, IL-8, IL-10, IL-15, IP-10/CXCL10, MCP-1/ССL2 был выявлен в ССР, перелитой преимущественно пациентам, имевшим неблагоприятный (смертельный) исход заболевания. В этих сериях ССР достоверно повышены значения балансов цитокинов IFNγ/IL-10, IFNγ/IP-10, IFNγ/MCP-1, IL-6/IL-8, IL-6/IL-10, IL-6/IP-10, IL-6/IL-15 по сравнению с образцами ССР, перелитой пациентам группы выздоровевших. Низкий уровень IL-6 и IFNγ, сниженные значениями баланса IL-6/IP-10, IL-6/IL-15, IFNγ/MCP-1, IFNγ/IP-10, IFNγ/IL-15 были характерны для ССР, которую переливали пациентам, впоследствии выздоровевшим. Уровень IL-6 в образцах ССР, перелитой пациентам группы выздоровевших, имел сильную прямую корреляционную связь (r = 0,9) с балансами цитокинов IL-6/IL-10 и IL-6/IP-10, в то время как в группе умерших сильной связи не наблюдалось (r = 0,6). Уровни IFNγ в ССР проявляли сильную прямую корреляционную связь со значениями всех проанализированных балансов цитокинов (IFNγ/IL-10 (r = 0,9), IFNγ/IP-10 (r = 0,9), IFNγ/MCP-1 (r = 0,9)). IFNγ в ССР, перелитой пациентам группы выздоровевших, имел положительную корреляционную связь с значениями балансов IFNγ/IL-10 (r = 0,78), IFNγ/IP-10 (r = 0,9), IFNγ/MCP-1 (r = 0,75). Уровень IFNγ в ССР, перелитой пациентам группы умерших, имел более высокие значения положительной корреляционной связи с IFNγ/IL-10 (r = 0,96), IFNγ/IP-10 (r = 0,92), IFNγ/MCP-1 (r = 0,92). <italic>Заключение.</italic> Уровень цитокинов IL-6 и IFNγ, баланс цитокинов на их основе в ССР могут влиять на исход COVID-19 у пациентов, получавших лечение с использованием ССР.</p></trans-abstract><kwd-group xml:lang="en"><kwd>COVID-19</kwd><kwd>patients</kwd><kwd>COVID-19 convalescent plasma</kwd><kwd>cytokines</kwd><kwd>cytokine ratio</kwd><kwd>disease outcome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>COVID-19</kwd><kwd>пациенты</kwd><kwd>плазма иммунная анти-COVID-19</kwd><kwd>цитокины</kwd><kwd>балансы цитокинов</kwd><kwd>исход заболевания</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Максимович А.В., Потапнев М.П., Дунаев И.А., Гущина Л.М., Карпенко Ф.Н. 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