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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">mes</journal-id><journal-title-group><journal-title xml:lang="ru">Экстремальная биомедицина</journal-title><trans-title-group xml:lang="en"><trans-title>Extreme Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3033-8964</issn><issn pub-type="epub">3033-8972</issn><publisher><publisher-name>Centre for Strategic Planning of the Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47183/mes.2025-257</article-id><article-id custom-type="elpub" pub-id-type="custom">mes-257</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>КЛИНИЧЕСКАЯ ЛАБОРАТОРНАЯ ДИАГНОСТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL LABORATORY DIAGNOSTICS</subject></subj-group></article-categories><title-group><article-title>Люминесцентная иммунохроматография на основе комплексных соединений Eu³⁺ для выявления патогенных микроорганизмов и бактериальных токсинов</article-title><trans-title-group xml:lang="en"><trans-title>Luminescent immunochromatography based on Eu³⁺ coordination compounds for detection of pathogenic microorganisms and bacterial toxins</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4644-0485</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ярков</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Yarkov</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ярков Сергей Петрович - д-р. биол. наук</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey P. Yarkov</p><p>Moscow</p></bio><email xlink:type="simple">diasol@dol.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2826-9581</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Третьяков</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tretyakov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Третьяков Сергей Иванович - канд. технич. наук</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey I. Tretyakov</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0801-6923</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шиленко</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shilenko</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шиленко Инесса Владимировна - канд. технич. наук</p><p>Москва</p></bio><bio xml:lang="en"><p>Inessa V. Shilenko</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-7522-7775</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шаулина</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaulina</surname><given-names>E. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шаулина Екатерина Константиновна</p><p>Москва</p></bio><bio xml:lang="en"><p>Ekaterina K. Shaulina</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-4482-3724</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мандажи</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mandaji</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мандажи Ангелина</p><p>Москва</p></bio><bio xml:lang="en"><p>Angelina Mandaji</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-3209-4940</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зенков</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zenkov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зенков Денис Алекcандрович</p><p>Москва</p></bio><bio xml:lang="en"><p>Denis A. Zenkov</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8355-7821</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ишков</surname><given-names>Ю. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ishkov</surname><given-names>Yu. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ишков Юрий Николаевич - канд. хим. наук</p><p>Москва</p></bio><bio xml:lang="en"><p>Yury N. Ishkov</p><p>Moscow</p></bio><email xlink:type="simple">14otd@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9988-2343</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стяжкин</surname><given-names>К. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Styazhkin</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Стяжкин Константин Кириллович - д-р биол. наук, профессор</p><p>Москва</p></bio><bio xml:lang="en"><p>Konstantin K. Styazhkin</p><p>Moscow</p></bio><email xlink:type="simple">director@gosniibp.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный научно-исследовательский институт биологического приборостроения</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Scientific Research Institute of Biological Instrumentation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>24</day><month>03</month><year>2025</year></pub-date><volume>27</volume><issue>1</issue><fpage>107</fpage><lpage>114</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ярков С.П., Третьяков С.И., Шиленко И.В., Шаулина Е.К., Мандажи А., Зенков Д.А., Ишков Ю.Н., Стяжкин К.К., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ярков С.П., Третьяков С.И., Шиленко И.В., Шаулина Е.К., Мандажи А., Зенков Д.А., Ишков Ю.Н., Стяжкин К.К.</copyright-holder><copyright-holder xml:lang="en">Yarkov S.P., Tretyakov S.I., Shilenko I.V., Shaulina E.K., Mandaji A., Zenkov D.A., Ishkov Y.N., Styazhkin K.K.</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.extrememedicine.ru/jour/article/view/257">https://www.extrememedicine.ru/jour/article/view/257</self-uri><abstract><sec><title>Введение</title><p>Введение. Повышение чувствительности иммунохроматографического анализа как одного из экспресс-методов индикации и диагностики патогенных микроорганизмов и токсинов актуально для пищевой безопасности и здравоохранения в целом.</p></sec><sec><title>Цель</title><p>Цель. Разработка экспериментального образца видеоцифрового регистратора люминесцентных иммунохроматограмм РЛИ-Eu³⁺ и адаптированных к прибору люминесцентных иммунохроматографических тестов (ЛИХТ) на основе микросфер с соединениями европия, сравнение чувствительности ЛИХТ с ИХА-тестами на основе наночастиц коллоидного золота (НКЗ) для увеличения чувствительности метода и выявления патогенных микроорганизмов и их токсинов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В качестве люминесцентной метки для иммунохроматографии использовали субмикронные полимерные микросферы, меченные органическими комплексами трехвалентного европия (Eu³⁺), ЛИХТ регистрировали с помощью разработанного прибора-регистратора РЛИ-Eu³⁺.</p></sec><sec><title>Результаты</title><p>Результаты. Показано, что порог обнаружения люминесцирующего комплекса Eu³⁺ на иммунохроматографической мембране равен 2 пг/мм², линейность показаний наблюдается в диапазоне 2–200 пг/мм². Коэффициенты вариации показаний прибора в диапазоне концентраций люминесцирующего комплекса 20–200 пг/мм² составляют &lt; 5%, в диапазоне 2–20 пг/мм² — менее 10%. С использованием ЛИХТ и прибора РЛИ-Eu³⁺ определены следующие пороги обнаружения: холерного токсина — 10 нг/мл, стафилококкового энтеротоксина типа В — 0,5 нг/мл, клеток возбудителя чумы — 1×10³ м.к./мл, спор возбудителя сибирской язвы — 5×10³ спор/мл, антигенов вируса Конго-Крымской геморрагической лихорадки (ККГЛ) — в разведении 1:640 000.</p></sec><sec><title>Выводы</title><p>Выводы. Разработанный видеоцифровой регистратор РЛИ-Eu³⁺ и ЛИХТ на основе комплексов европия позволили снизить в 20–128 раз порог обнаружения патогенных микроорганизмов и бактериальных токсинов по сравнению с иммунохроматографическими тестами на основе НКЗ для тех же патогенов.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Increasing the sensitivity of immunochromatographic assay as an express method for detection and diagnosis of pathogenic microorganisms and toxins is a relevant task with regard to ensuring food safety and population health in general.</p></sec><sec><title>Objective</title><p>Objective. Development of a prototype of a video digital recorder of luminescent immunochromatograms (RLI-Eu³⁺) and luminescent immunochromatographic tests (LICHT) adapted to a device based on microspheres with europium compounds. Comparison of the sensitivity of LICHT and AuNPs-based immunochromatography assay (ICA) tests to increase the sensitivity of the method for detection of pathogenic microorganisms and their toxins.</p></sec><sec><title>Material and methods</title><p>Material and methods. Submicron polymer microspheres labeled with organic complexes of trivalent europium (Eu³⁺) were used as a luminescent label for immunochromatography. LICHT were recorded using the developed RLI-Eu³⁺ recorder.</p></sec><sec><title>Results</title><p>Results. The detection threshold of the Eu³⁺ luminescent complex on the immunochromatographic membrane was shown to be 2 pg/mm², with the linearity of the readings ranging within 2–200 pg/mm². The coefficients of variation of the instrument readings in the luminescent complex concentration range of 20–200 pg/mm² and 2–20 pg/mm² were found to be less than 5% and 10%, respectively. Using LICHT and the RLI-Eu³⁺ device, detection thresholds were determined as follows: cholera toxin — 10 ng/mL, staphylococcal enterotoxin type B — 0.5 ng/mL, plague pathogen cells — 1×10³ cells/mL, anthrax pathogen spores — 5×10³ spores/mL, Crimean-Congo hemorrhagic fever (CCHF) virus antigens — at a dilution of 1:640,000.</p></sec><sec><title>Conclusions</title><p>Conclusions. The developed video digital recorder RLI-Eu³⁺ and LICHT based on europium coordination compounds enabled the detection threshold of pathogenic microorganisms and bacterial toxins to be reduced by 20–128 times compared to immunochromatographic tests based on colloidal gold (CG) for the same pathogens.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>люминесцентная иммунохроматография</kwd><kwd>видеоцифровая регистрация результатов</kwd><kwd>субмикронные полимерные частицы с комплексами европия</kwd><kwd>холерный токсин</kwd><kwd>стафилококковый энтеротоксин типа В</kwd><kwd>клетки возбудителя чумы</kwd><kwd>споры возбудителя сибирской язвы</kwd><kwd>антигены вируса ККГЛ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>luminescent immunochromatography</kwd><kwd>video digital recording</kwd><kwd>submicron polymer particles with europium complexes</kwd><kwd>cholera toxin</kwd><kwd>staphylococcal enterotoxin type B</kwd><kwd>plague pathogen cells</kwd><kwd>anthrax pathogen spores</kwd><kwd>CCHF virus antigens</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">исследование выполнено без спонсорской поддержки</funding-statement><funding-statement xml:lang="en">this work was carried out without sponsorship</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">Hou FP, Bai MY, Zhang Y, Liu HY, Sun SQ, Guo HC. 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