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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">Ecological genetics</journal-id><journal-title-group><journal-title xml:lang="en">Ecological genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Экологическая генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1811-0932</issn><issn publication-format="electronic">2411-9202</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">632736</article-id><article-id pub-id-type="doi">10.17816/ecogen632736</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Human ecological genetics</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экологическая генетика человека</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">Association of superoxide dismutase and catalase genetic variants and their gene-gene interactions with the severity of COVID-19</article-title><trans-title-group xml:lang="ru"><trans-title>Ассоциация генетических вариантов супероксиддисмутазы и каталазы и их межгенное взаимодействие с тяжестью течения COVID-19</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3554-3529</contrib-id><name-alternatives><name xml:lang="en"><surname>Eid</surname><given-names>Moez A.</given-names></name><name xml:lang="ru"><surname>Ид</surname><given-names>Муэз</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>moez1995.mae@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1948-4995</contrib-id><contrib-id contrib-id-type="spin">2518-5138</contrib-id><name-alternatives><name xml:lang="en"><surname>Aleksandrova</surname><given-names>Anzhela A.</given-names></name><name xml:lang="ru"><surname>Александрова</surname><given-names>Анжела Аслановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><email>aalexsandrova@sfedu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="spin">1393-6905</contrib-id><name-alternatives><name xml:lang="en"><surname>Kosenko</surname><given-names>Peter O.</given-names></name><name xml:lang="ru"><surname>Косенко</surname><given-names>Петр Олегович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><email>peza-i@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6197-7374</contrib-id><contrib-id contrib-id-type="spin">5620-2091</contrib-id><name-alternatives><name xml:lang="en"><surname>Shkurat</surname><given-names>Tatiana P.</given-names></name><name xml:lang="ru"><surname>Шкурат</surname><given-names>Татьяна Павловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>д-р биол. наук</p></bio><email>tshkurat@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Southern Federal University</institution></aff><aff><institution xml:lang="ru">Южный федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Medical Center “Nauka”</institution></aff><aff><institution xml:lang="ru">Медицинский центр «Наука»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-07-04" publication-format="electronic"><day>04</day><month>07</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-09-29" publication-format="electronic"><day>29</day><month>09</month><year>2024</year></pub-date><volume>22</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>255</fpage><lpage>264</lpage><history><date date-type="received" iso-8601-date="2024-05-25"><day>25</day><month>05</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-07-04"><day>04</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Эко-Вектор</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2027-09-29"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/ecolgenet/article/view/632736">https://journals.eco-vector.com/ecolgenet/article/view/632736</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND</bold>: Since the outbreak of COVID-19 infection, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), oxidative stress has been proposed as an important player in its severity. This increased the interest in studying antioxidant systems to evaluate their possible role in counteracting disease progression.</p> <p><bold>AIM</bold>: The aim of the current study was to investigate the association of single nucleotide polymorphism (SNP) of superoxide dismutase (SOD) and catalase (CAT) genes with the severity of COVID-19.</p> <p><bold>MATERIALS AND METHODS</bold>: Study subjects were divided into two groups based on the severity of their symptoms. Allele-specific PCR was used for genotyping, and multifactor dimensionality reduction (MDR) analysis was performed to investigate the SNP–SNP interaction models.</p> <p><bold>RESULTS</bold>: The results showed a significant association of SOD2 rs4880 with the severity of COVID-19 (p = 0.002). SOD2 47TT genotype was significantly more frequent among patients with severe COVID-19 (OR 4.34; 95% CI 1.72–10.96). The three-locus SNP–SNP interaction model, resulted from MDR analysis, was statistically significant (0.55 × 10<sup>–4</sup>, OR 3.81; 95% CI 1.96–7.42). Carriers of SOD1 7958G * SOD2 47T * CAT 262C allele combination had a higher risk of severe COVID-19 (p = 0.0045, OR 2.84, 95% CI 1.40–5.78).</p> <p><bold>CONCLUSIONS</bold>: The obtained results contribute to better understanding of COVID-19 pathogenesis and suggest novel potential prognostic biomarkers of the infection.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность</bold>. С момента вспышки инфекции COVID-19, вызванной коронавирусом тяжелого острого респираторного синдрома 2 (SARS-CoV-2), окислительный стресс был предложен в качестве важного фактора, способствующего ее тяжести. Это повысило интерес к изучению антиоксидантных систем с целью оценки их возможной роли в противодействии прогрессированию заболеваний.</p> <p><bold>Цель</bold> — изучение ассоциации однонуклеотидного полиморфизма (SNP) генов супероксиддисмутазы (SOD) и каталазы (CAT) с тяжестью течения COVID-19.</p> <p><bold>Материалы и методы</bold>. Пациенты были разделены на две группы в зависимости от тяжести симптомов. Аллель-специфическая ПЦР использовалась для генотипирования, а для исследования моделей взаимодействия SNP–SNP был проведен многофакторный анализ снижения размерности (MDR).</p> <p><bold>Результаты</bold>. Результаты показали значительную ассоциацию SOD2 rs4880 с тяжестью течения COVID-19 (p = 0,002). Генотип SOD2 47TT достоверно чаще встречался среди пациентов с тяжелым течением COVID-19 (отношение шансов 4,34; 95 % доверительный интервал 1,72–10,96). Модель взаимодействия SNP–SNP с тремя локусами, полученная в результате анализа MDR, была статистически значимой (0,55 × 10<sup>–4</sup>, отношение шансов 3,81; 95 % доверительный интервал 1,96–7,42). Носители сочетания аллелей SOD1 7958G * SOD2 47T * CAT 262C имели более высокий риск тяжелого течения COVID-19 (p = 0,0045, отношение шансов 2,84, 95 % доверительный интервал 1,40–5,78).</p> <p><bold>Заключение</bold>. Полученные результаты способствуют лучшему пониманию патогенеза COVID-19 и предлагают новые потенциальные прогностические биомаркеры инфекции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>COVID-19</kwd><kwd>oxidative stress</kwd><kwd>single nucleotide polymorphisms</kwd><kwd>SOD1</kwd><kwd>SOD2</kwd><kwd>CAT</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>COVID-19</kwd><kwd>окислительный стресс</kwd><kwd>однонуклеотидный полиморфизм</kwd><kwd>SOD1</kwd><kwd>SOD2</kwd><kwd>CAT</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap></funding-source><award-id>FENW-2023-0018</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Adam-Vizi V, Chinopoulos C. 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