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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.2024.023</article-id><article-id custom-type="elpub" pub-id-type="custom">mes-62</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Оценка противорадиационной эффективности лечебного средства на основе Staphylococcus aureus</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of anti-radiation efficacy of the Staphylococcus aureus-derived therapeutic agent</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>Гайнутдинов</surname><given-names>Т. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaynutdinov</surname><given-names>T. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тимур Рафкатович Гайнутдинов</p><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Timur R. Gaynutdinov</p><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><email xlink:type="simple">gtr_timur@mail.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>Рыжкин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryzhkin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</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>Шавалиев</surname><given-names>Р. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Shavaliev</surname><given-names>R. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вагин</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vagin</surname><given-names>K. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курбангалеев</surname><given-names>Я. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurbangaleev</surname><given-names>Ya. M</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калимуллин</surname><given-names>Ф. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalimullin</surname><given-names>F. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Плотникова</surname><given-names>Э. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Plotnikova</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Идрисов</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Idrisov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Охрименко</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Ohrimenko</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Майорова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Mayorova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул Научный городок, д. 2, г. Казань, 420075</p></bio><bio xml:lang="en"><p>Nauchnyj Gorodok, 2, Kazan, 420075</p></bio><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный центр токсикологической, радиационной и биологической безопасности; Казанский (Приволжский) федеральный университет; Казанский государственный медицинский университет Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Center for Toxicological, Radiation, and Biological Safety; Kazan Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский (Приволжский) федеральный университет; Российская медицинская академия непрерывного профессионального образования Министерства здравоохранения Российской Федерации; Казанский государственный медицинский университет Министерства здравоохранения Российской Федерации; Академия наук Республики Татарстан</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan Federal University; Russian Medical Academy of Continuing Professional Education of the Ministry of Health of the Russian Federation; Kazan State Medical University of the Ministry of Health of the Russian Federation; Academy of Sciences of the Republic of Tatarstan</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Казанский государственный медицинский университет Министерства здравоохранения Российской Федерации; Республиканская клиническая больница Министерства здравоохранения Республики Татарстан</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Medical University of the Ministry of Health of the Russian Federation; Republican Clinical Hospital of the Ministry of Health of the Republic of Tatarstan</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Федеральный центр токсикологической, радиационной и биологической безопасности; Казанский (Приволжский) федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Center for Toxicological, Radiation, and Biological Safety; Kazan Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Федеральный центр токсикологической, радиационной и биологической безопасности</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Center for Toxicological, Radiation, and Biological Safety</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Российская медицинская академия непрерывного профессионального образования Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Continuing Professional Education of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>23</day><month>10</month><year>2024</year></pub-date><volume>26</volume><issue>2</issue><fpage>67</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гайнутдинов Т.Р., Рыжкин С.А., Шавалиев Р.Ф., Вагин К.Н., Курбангалеев Я.М., Калимуллин Ф.Х., Плотникова Э.М., Идрисов А.М., Охрименко С.Е., Майорова Е.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Гайнутдинов Т.Р., Рыжкин С.А., Шавалиев Р.Ф., Вагин К.Н., Курбангалеев Я.М., Калимуллин Ф.Х., Плотникова Э.М., Идрисов А.М., Охрименко С.Е., Майорова Е.Н.</copyright-holder><copyright-holder xml:lang="en">Gaynutdinov T.R., Ryzhkin S.A., Shavaliev R.F., Vagin K.N., Kurbangaleev Y.M., Kalimullin F.H., Plotnikova E.M., Idrisov A.M., Ohrimenko S.E., Mayorova E.N.</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/62">https://www.extrememedicine.ru/jour/article/view/62</self-uri><abstract><p>Актуальность проведенных исследований заключается в том, что снижение токсичности микроорганизмов в процессе их радиоинактивации сопровождается синтезом радиопротекторных субстанций и проявлением радиозащитного действия при введении этих микробных препаратов в организм облученных животных. Целью исследования было изучить радиозащитную эффективность облученных вариантов золотистого стафилококка. В работе установлено, что культура Staphylococcus aureus, подвергнутая однократному гамма-облучению в диапазоне доз от 30 до 40 кГр, обеспечивает защиту от 55 до 66% летально облученных животных. Многократное облучение тест-микроба постепенно возрастающими дозами гамма-лучей индуцировало еще большее возрастание радиорезистентности, обусловленное синтезом эндогенных радиопротекторов, в частности антиоксидантного фермента пероксидазы и цитокина IL1β, обеспечивающих перехват радиоиндуцированных токсических радикалов, предотвращая тем самым пострадиационную панцитопению в костном мозге. В опытах на белых мышах, облученных гамма-лучами в абсолютно летальных дозах (7,9 Гр, ЛД100/30), показано, что однократное подкожное введение радиорезистентного варианта St. aureus штамм 209R70 в дозе 2 × 108 микробных клеток на особь через 3 суток после облучения обеспечивало 77,7% выживаемость при 100% гибели нелеченых животных. На основании полученных результатов сделано предположение, что включение облученных препаратов микробного происхождения позволит повысить эффективность комплексных радиозащитных средств.</p></abstract><trans-abstract xml:lang="en"><p>The study is relevant due to the fact that the decrease in microbial toxicity observed during the radio-inactivation of microorganisms is accompanied by synthesis of radioprotective substances and exertion of the radioprotective effects associated with administration of such microbial agents to exposed animals. The study was aimed to assess radioprotective efficacy of the exposed Staphylococcus aureus variants. The study showed that the Staphylococcus aureus culture treated with a single dose of gamma radiation (30–40 kGy) ensured protection of 55–66% of the lethally irradiated animals. Multiple exposures of the test microorganism to the gradually increasing doses of gamma radiation induced an even larger increase in radioresistance resulting from the synthesis of endogenic radioprotectors, particularly peroxidase, the antioxidant enzyme, and IL1β cytokine, ensuring interception of the radiation-induced toxic radicals and thereby preventing postexposure pancytopenia in the bone marrow. The experiments involving white mice exposed to the absolutely lethal gamma radiation doses (7.9 Gy, LD100/30) showed that a single subcutaneous administration of the St. aureus radioresistant variant (strain 209R70) in a dose of 2 × 108 bacterial cells per animal 3 days after the exposure ensured the 77.7% survival rate, while 100% of untreated animals died. Based on the findings it was concluded that inclusion of the exposed agents of microbial origin would make it possible to increase the efficacy of the combination radioprotectors.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>золотистый стафилококк</kwd><kwd>гамма-лучи</kwd><kwd>радиоинактивация</kwd><kwd>радиомодификация</kwd><kwd>лабораторные животные</kwd><kwd>противорадиационная эффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Staphylococcus aureus</kwd><kwd>gamma rays</kwd><kwd>radio inactivation</kwd><kwd>radio modification</kwd><kwd>laboratory animals</kwd><kwd>anti-radiation effectiveness</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена за счет средств субсидии, выделенной ФГБНУ «ФЦТРБ-ВНИВИ» для выполнения научно-исследовательской работы, государственная регистрация № 01200202604.</funding-statement><funding-statement xml:lang="en">The study was conducted the expense of the subsidy granted to the Federal Center for Toxicological, Radiation, and Biological Safety for research work, state registration No. 01200202604.</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">de Cassan D, Hoheisel AL, Glasmacher B. 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