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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1055</article-id><article-id pub-id-type="doi">10.24287/j.1055</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">The quality of platelet concentrate suspended in SSP+ and cold stored for 5 days</article-title><trans-title-group xml:lang="ru"><trans-title>Оценка качества концентрата тромбоцитов, заготовленного в SSP+, при холодовом хранении в течение 5 дней</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5217-3937</contrib-id><name-alternatives><name xml:lang="en"><surname>Ignatova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Игнатова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Researcher at the Laboratory of Cellular Hemostasis and Thrombosis</p></bio><bio xml:lang="ru"><p>научный сотрудник лаборатории клеточного гемостаза и тромбоза</p></bio><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1219-8654</contrib-id><name-alternatives><name xml:lang="en"><surname>Starostin</surname><given-names>N. N.</given-names></name><name xml:lang="ru"><surname>Старостин</surname><given-names>Н. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9744-9629</contrib-id><name-alternatives><name xml:lang="en"><surname>Svidelskaya</surname><given-names>G. S.</given-names></name><name xml:lang="ru"><surname>Свидельская</surname><given-names>Г. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7186-1978</contrib-id><name-alternatives><name xml:lang="en"><surname>Sysoev</surname><given-names>M. D.</given-names></name><name xml:lang="ru"><surname>Сысоев</surname><given-names>М. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2549-4011</contrib-id><name-alternatives><name xml:lang="en"><surname>Osidak</surname><given-names>E. O.</given-names></name><name xml:lang="ru"><surname>Осидак</surname><given-names>Е. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0231-1617</contrib-id><name-alternatives><name xml:lang="en"><surname>Trakhtman</surname><given-names>P. E.</given-names></name><name xml:lang="ru"><surname>Трахтман</surname><given-names>П. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya.ignatova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Center for Theoretical Problems of Physical and Chemical Pharmacology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН Центр теоретических проблем физико-химической фармакологии Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian Medical Academy of Continuous Professional Education of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБОУ «Российская медицинская академия непрерывного профессионального образования» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-04-14" publication-format="electronic"><day>14</day><month>04</month><year>2026</year></pub-date><volume>25</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>99</fpage><lpage>105</lpage><history><date date-type="received" iso-8601-date="2025-11-19"><day>19</day><month>11</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-02-02"><day>02</day><month>02</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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://hemoncim.com/jour/article/view/1055">https://hemoncim.com/jour/article/view/1055</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>The cold storage of platelets at 2–6°C has a number of advantages such as bacterial growth reduction and metabolic slowdown, and may be an alternative to conventional storage at room temperature. However, the impact of cold storage on platelet function continues to cause controversy among specialists.</p> <p><bold>Aim:</bold> to compare the functional parameters of platelet concentrates suspended in SSP+ additive solution when stored for 5 days under standard conditions versus in the refrigerator.</p> <p><bold>Materials and methods.</bold> To assess the function of stored platelets, flow cytometry and platelet aggregation analysis using the low-angle light scattering technique were employed.</p> <p><bold>Results. </bold>It was shown that the number and morphological parameters of the cold-stored platelets had not changed during the 5-day period and remained within the reference range. At the same time, spontaneous expression of P-selectin and phosphatidylserine, platelet activation markers, increased significantly, compared to standard storage conditions. When refrigerated, platelets responded better to collagen activation and their aggregation capacity also remained high. There were no significant differences in platelet desialylation between Days 1 and 5 of cold storage.</p> <p><bold>Conclusion. </bold>The obtained results allow us to conclude that platelets retain their activation and aggregation capacity when stored in the cold within the standard 5-day shelf life.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Холодовое хранение тромбоцитов при 2–6°С имеет ряд преимуществ, таких как снижение роста бактерий и замедление метаболических процессов, и может быть альтернативой традиционному хранению при комнатной температуре. Однако функциональные характеристики тромбоцитов, хранящихся в холодильнике, продолжают вызывать споры среди специалистов.</p> <p><bold>Цель исследования</bold> – сравнить функциональные характеристики концентратов тромбоцитов, заготовленных в добавочном растворе SSP+, при хранении в стандартных условиях и холодовом хранении в течение 5 дней.</p> <p><bold>Материалы и методы.</bold> Для оценки функциональной активности тромбоцитов при хранении были использованы проточная цитометрия и агрегометрия методом малоуглового светорассеяния.</p> <p><bold>Результаты. </bold>Показано, что при холодовом хранении тромбоцитов их количество и морфологические характеристики не изменялись в течение 5 дней и находились в пределах референсных значений. При этом значительно возрастала спонтанная экспрессия маркеров активации тромбоцитов – Р-селектина и фосфатидилсерина – по сравнению со стандартными условиями хранения. Тромбоциты при хранении в холоде лучше отвечали на активацию коллагеном, и их способность к агрегации также сохранялась на высоком уровне. Уровень десиалирования тромбоцитов при хранении в холоде достоверно не отличался между 1-м и 5-м днями хранения.</p> <p><bold>Заключение.</bold> Полученные результаты позволяют сделать вывод, что при хранении в холоде сохраняется способность тромбоцитов к активации и агрегации при стандартном 5-дневном сроке годности.</p></trans-abstract><kwd-group xml:lang="en"><kwd>platelet concentrate</kwd><kwd>SSP+</kwd><kwd>cold storage</kwd><kwd>flow cytometry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>концентрат тромбоцитов</kwd><kwd>SSP+</kwd><kwd>холодовое хранение</kwd><kwd>проточная цитометрия</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>24-15-00387</award-id></award-group><funding-statement xml:lang="en">The study was supported by a grant from the Russian Science Foundation (project No. 24-15-00387)</funding-statement><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта Российского научного фонда (проект №24-15-00387)</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Gammon R.R., Hebert J., Min K., O'Connor J.J., 2nd, Ipe T., Razatos A. et al. 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