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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Medicine</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Медицина</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-0245</issn><issn publication-format="electronic">2313-0261</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">37358</article-id><article-id pub-id-type="doi">10.22363/2313-0245-2024-28-3-37358</article-id><article-id pub-id-type="edn">FYOJXA</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>PHYSIOLOGY. EXPERIMENTAL PHYSIOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ФИЗИОЛОГИЯ. ЭКСПЕРИМЕНТАЛЬНАЯ ФИЗИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Kidney morphofunctional features after ascorbic acid administration in a model of acute radiation nephropathy</article-title><trans-title-group xml:lang="ru"><trans-title>Морфофункциональные особенности почки после введения аскорбиновой кислоты в модели острой лучевой нефропатии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0128-4538</contrib-id><name-alternatives><name xml:lang="en"><surname>Koryakin</surname><given-names>Sergey</given-names></name><name xml:lang="ru"><surname>Корякин</surname><given-names>Сергей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div><span lang="EN-US">PhD, Head of the Department of Radiation Biophysics «NMRC of Radiology»</span></div></bio><bio xml:lang="ru"><div><span lang="RU">к.б.н., заведующий отделом радиационной биофизики МРНЦ им. А.Ф. Цыба – филиала ФГБУ «НМИЦ радиологии» Минздрава России</span></div></bio><email>ek-koryakina@mrrc.obninsk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-1074-6044</contrib-id><name-alternatives><name xml:lang="en"><surname>Petrushin</surname><given-names>Kirill</given-names></name><name xml:lang="ru"><surname>Петрушин</surname><given-names>Кирилл Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div><span lang="RU">с</span><span lang="EN-GB">o-researcher </span>of the Institute of Clinal Medicine of the Sechenov University</div></bio><bio xml:lang="ru"><div><span lang="RU">Соискатель ИКМ им. Н.В. Склифосовского </span></div>
<div><span lang="RU">Первого МГМУ им. И.М. Сеченова (Сеченовский Университет) Минздрава России</span></div></bio><email>89208537621@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-7170-8783</contrib-id><name-alternatives><name xml:lang="en"><surname>Parshenkov</surname><given-names>Mikhail</given-names></name><name xml:lang="ru"><surname>Паршенков</surname><given-names>Михаил Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div>Student <span lang="EN-US">of the Institute of Pharmacy  of the Sechenov University</span></div></bio><bio xml:lang="ru"><div><span lang="RU">Студент ИФ им. А.П. Нелюбина </span></div>
<div><span lang="RU">Первого МГМУ им. И.М. Сеченова (Сеченовский Университет) Минздрава России</span></div></bio><email>misjakj@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-2291-3680</contrib-id><name-alternatives><name xml:lang="en"><surname>Uruskhanova</surname><given-names>Zhanna</given-names></name><name xml:lang="ru"><surname>Урусханова</surname><given-names>Жанна Эйсаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div><span lang="RU">с</span><span lang="EN-GB">o-researcher of RERC for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University</span></div></bio><bio xml:lang="ru"><div><span lang="RU">соискатель НОРЦ «Инновационные технологии иммунофенотипирования, цифрового пространственного профилирования и ультраструктурного анализа» </span></div>
<div><span lang="RU">РУДН им. П. </span><span lang="RU">Лумумбы</span></div></bio><email>jey.149@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-0827-6771</contrib-id><name-alternatives><name xml:lang="en"><surname>Shchitkova</surname><given-names>Anastasiia</given-names></name><name xml:lang="ru"><surname>Щиткова</surname><given-names>Анастасия Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div><span lang="RU">с</span><span lang="EN-GB">o-researcher of RERC for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University</span></div></bio><bio xml:lang="ru"><div><span lang="RU">соискатель НОРЦ «Инновационные технологии иммунофенотипирования, цифрового пространственного профилирования и ультраструктурного анализа» </span></div>
<div><span lang="RU">РУДН им. П. </span><span lang="RU">Лумумбы</span></div></bio><email>Nastmamontova@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-6079-4187</contrib-id><name-alternatives><name xml:lang="en"><surname>Pechnikova</surname><given-names>Elizabeth</given-names></name><name xml:lang="ru"><surname>Печникова</surname><given-names>Елизавета Федоровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><div><span lang="EN-US">student of the Institute of Clinal Medicine of the Sechenov University</span></div></bio><bio xml:lang="ru"><div><span lang="RU">студент ИКМ им. Н.В. Склифосовского </span><span lang="RU">Первого МГМУ им. И.М. Сеченова (Сеченовский Университет) Минздрава России</span></div></bio><email>mponomoreva@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8447-2600</contrib-id><name-alternatives><name xml:lang="en"><surname>Demyashkin</surname><given-names>Grigory</given-names></name><name xml:lang="ru"><surname>Демяшкин</surname><given-names>Григорий Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p> <span lang="EN-US">PhD, MD; Leading Researcher of RERC for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University, Head of the Department of Pathomorphology        «NMRC of Radiology»</span></p></bio><bio xml:lang="ru"><div><span lang="RU">д.м.н., ведущий научный сотрудник НОРЦ «Инновационные технологии иммунофенотипирования, цифрового пространственного профилирования и ультраструктурного анализа» </span><span lang="RU">РУДН им. П. Лумумбы</span><span lang="RU">, заведующий отделом патоморфологии ФГБУ «</span><span lang="RU">НМИЦ радиологии» Минздрава России</span></div></bio><email>dr.dga@mail.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">National Medical Research Radiological Centre</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр радиологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Sechenov University</institution></aff><aff><institution xml:lang="ru">Первый Московский государственный университет им. И.М. Сеченова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2024</year></pub-date><volume>28</volume><issue>3</issue><issue-title xml:lang="en">PHYSIOLOGY. EXPERIMENTAL PHYSIOLOGY</issue-title><issue-title xml:lang="ru">ФИЗИОЛОГИЯ. ЭКСПЕРИМЕНТАЛЬНАЯ ФИЗИОЛОГИЯ</issue-title><fpage>301</fpage><lpage>310</lpage><history><date date-type="received" iso-8601-date="2024-01-08"><day>08</day><month>01</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-07-27"><day>27</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Koryakin S., Petrushin K., Parshenkov M., Uruskhanova Z., Shchitkova A., Pechnikova E., Demyashkin G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Корякин С.Н., Петрушин К.С., Паршенков М.А., Урусханова Ж.Э., Щиткова А.А., Печникова Е.Ф., Демяшкин Г.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Koryakin S., Petrushin K., Parshenkov M., Uruskhanova Z., Shchitkova A., Pechnikova E., Demyashkin G.</copyright-holder><copyright-holder xml:lang="ru">Корякин С.Н., Петрушин К.С., Паршенков М.А., Урусханова Ж.Э., Щиткова А.А., Печникова Е.Ф., Демяшкин Г.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-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/medicine/article/view/37358">https://journals.rudn.ru/medicine/article/view/37358</self-uri><abstract xml:lang="en"><p style="text-align: justify;">Relevance. The use of radiation therapy in the treatment of malignant neoplasms actualizes the study of ways to protect healthy tissues from radiation damage. Due to the small number of studies aimed at studying structural and functional changes of kidneys both at their direct irradiation with electrons and at radiotherapy of adjacent organs, it is necessary to carry out complex research. One of the promising directions of radiation nephropathy treatment is the use of antioxidant preparations, in particular ascorbic acid. Aim. Morphofunctional evaluation of the kidney after local electron irradiation and ascorbic acid administration. Materials and Methods. Wistar rats (n=90) were divided into groups: I — control (n=15); II — irradiation, 2 Gy dose (n=15); III — irradiation, 8 Gy dose (n=15); IV — irradiation, 2 Gy dose + ascorbic acid (intraperitoneal injection; dose 50 mg/kg) (n=15); V — irradiation, 8 Gy dose + ascorbic acid (intraperitoneal injection; dose 50 mg/kg) (n=15); VI — ascorbic acid (intraperitoneal injection; dose 50 mg/kg) (n=15). Kidney slides were stained with hematoxylin and eosin. In addition, blood biochemical examination was performed for creatinine, urea nitrogen, C-reactive protein, cystatin C to creatinine ratio was calculated, and kidney homogenate for malonic dialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) concentration levels. Results and Discussion. It was found that pre-radiation administration of ascorbic acid (intraperitoneal injection; dose 50 mg/kg) in the model of acute radiation nephropathy induced by local irradiation with electrons at doses of 2 Gy and 8 Gy contributed to a pronounced reduction of pathomorphologic and biochemical changes. Conclusion. Local irradiation with electrons at doses of 2 Gy and 8 Gy leads to the development of radiation nephropathy. At the same time, pre-irradiation administration of ascorbic acid reduces the strength of radiation-­induced kidney damage, as well as enhances the efficiency of antioxidant defense.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Актуальность. Использование лучевой терапии при лечении злокачественных новообразований (ЗНО) актуализирует изучение способов защиты здоровых тканей от радиационного повреждения. Ввиду малого количества исследований, направленных на изучение структурно-функциональных изменений почек, как при их непосредственном облучении электронами, так и при радиотерапии ЗНО соседних органов необходимо проведение комплексного исследования. Одним из перспективных направлений лечения радиационной нефропатии является использование препаратов-антиоксидантов, в частности аскорбиновой кислоты. Цель: морфофункциональная оценка почки после локального облучения электронами и введения аскорбиновой кислоты. Материалы и методы. Крысы Wistar (n=90) были разделены на группы: I – контрольная (n=15); II – облучение, РОД 2 Гр (n=15); III – облучение, РОД 8 Гр (n=15); IV – облучение, РОД 2 Гр + аскорбиновая кислота (интраперитонеальная инъекция; доза 50 мг/кг) (n=15); V – облучение, РОД 8 Гр + аскорбиновая кислота (интраперитонеальная инъекция; доза 50 мг/кг) (n=15); VI – аскорбиновая кислота (интраперитонеальная инъекция; доза 50 мг/кг) (n=15). Микропрепараты почек окрашивали гематоксилином и эозином. Кроме того, проводили биохимическое исследование крови на уровень креатинина, азота мочевины, С-реактивного белка, рассчитывали отношение цистатина С к креатинину, а также гомогената почки на уровень концентрации малонового диальдегида (MDA), супероксиддисмутазы (SOD), а также глутатиона (GSH). Результаты и обсуждение. Исследование показало, что предлучевое введение аскорбиновой кислоты (интраперитонеальная инъекция; доза 50 мг/кг) в модели острой лучевой нефропатии, индуцированной локальным облучением электронами в РОД 2 Гр и РОД 8 Гр, способствовало выраженному снижению патоморфологических и биохимических изменений. Выводы. Локальное облучение электронами в РОД 2 Гр и РОД 8 Гр приводит к развитию радиационной нефропатии. В то же время предлучевое введение аскорбиновой кислоты снижает силу радиационно-индуцированного повреждения почек, а также усиливает эффективность антиоксидантной защиты.</p></trans-abstract><kwd-group xml:lang="en"><kwd>radiation nephropathy, electron irradiation, kidney, ascorbic acid, oxidative stress</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>лучевая нефропатия, облучение электронами, почки, аскорбиновая кислота, оксидативный стресс</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Wild CP, Espina C, Bauld L, Bonanni B, Brenner H, Brown K, Dillner J, Forman D, Kampman E, Nilbert M, Steindorf K, Storm H, Vineis P, Baumann M, Schüz J. Cancer Prevention Europe. Molecular Oncology. 2019;13(3):528–534. doi: 10.1002/1878-0261.12455</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Wei J, Wang B, Wang H, Meng L, Zhao Q, Li X. 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