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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">Epidemiology and Infectious Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Epidemiology and Infectious Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Эпидемиология и инфекционные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">3034-2007</issn><issn publication-format="electronic">3034-2015</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">326205</article-id><article-id pub-id-type="doi">10.17816/EID326205</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Molecular patterns of neurodegeneration in coronavirus infection caused by SARS-CoV-2</article-title><trans-title-group xml:lang="ru"><trans-title>Молекулярные маркеры нейродегенерации при коронавирусной инфекции, вызванной SARS-CoV-2</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2719-3629</contrib-id><contrib-id contrib-id-type="spin">1469-9086</contrib-id><name-alternatives><name xml:lang="en"><surname>Mikhailov</surname><given-names>Aleksandr O.</given-names></name><name xml:lang="ru"><surname>Михайлов</surname><given-names>Александр Олегович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>mao1991@mail.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/0000-0002-8701-7213</contrib-id><contrib-id contrib-id-type="spin">2685-9578</contrib-id><name-alternatives><name xml:lang="en"><surname>Plekhova</surname><given-names>Natalia G.</given-names></name><name xml:lang="ru"><surname>Плехова</surname><given-names>Наталья Геннадьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biol.), Associate Professor</p></bio><bio xml:lang="ru"><p>д-р биол. наук, доцент</p></bio><email>pl_nat@hotmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3807-3259</contrib-id><contrib-id contrib-id-type="spin">8744-2166</contrib-id><name-alternatives><name xml:lang="en"><surname>Sokotun</surname><given-names>Svetlana A.</given-names></name><name xml:lang="ru"><surname>Сокотун</surname><given-names>Светлана Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>sokotun.s@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3334-4673</contrib-id><contrib-id contrib-id-type="spin">3563-7054</contrib-id><name-alternatives><name xml:lang="en"><surname>Simakova</surname><given-names>Anna I.</given-names></name><name xml:lang="ru"><surname>Симакова</surname><given-names>Анна Ивановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.), Associate Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, доцент</p></bio><email>anna-inf@yandex.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/0000-0003-0815-9959</contrib-id><contrib-id contrib-id-type="spin">1405-7610</contrib-id><name-alternatives><name xml:lang="en"><surname>Bedareva</surname><given-names>Anastasia S.</given-names></name><name xml:lang="ru"><surname>Бедарева</surname><given-names>Анастасия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Student</p></bio><bio xml:lang="ru"><p>студент</p></bio><email>nastya.bedareva.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Pacific State Medical University</institution></aff><aff><institution xml:lang="ru">Тихоокеанский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Regional Clinical Hospital No. 2</institution></aff><aff><institution xml:lang="ru">Краевая клиническая больница № 2</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pacific State Medical University</institution></aff><aff><institution xml:lang="ru">Краевая клиническая больница № 2</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2023-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2023</year></pub-date><volume>28</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>149</fpage><lpage>158</lpage><history><date date-type="received" iso-8601-date="2023-04-14"><day>14</day><month>04</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-05-11"><day>11</day><month>05</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Eco-vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Эко-вектор</copyright-statement><copyright-year>2023</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="2026-06-30"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://eco-vector.com/for_authors.php#07</ali:license_ref></license></permissions><self-uri xlink:href="https://rjeid.com/1560-9529/article/view/326205">https://rjeid.com/1560-9529/article/view/326205</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><italic>:</italic> The reports on the neurological and psychiatric consequences of coronavirus infection are of particular relevance owing to their limited availability. The molecular patterns of nerve tissue damage are an important task for understanding the underlying mechanisms of neurodegeneration.</p> <p><bold><italic>AIM</italic></bold><italic>:</italic> To study the dynamics of changes in the content of markers of neurodegeneration and neuroplasticity in patients with coronavirus infection in the acute and long-term periods.</p> <p><bold><italic>MATERIALS AND METHODS</italic></bold><italic>:</italic> A total of 200 patients aged 51–83 years were assessed and categorized into two age groups: 51–65 years and 66–83 years. The levels of neurodegeneration markers were determined in the blood serum: neurofilament heavy chains (NEFH), S100 A6 protein, S100 B protein, β-amyloid 1-42 (Aβ1-42), microfilament associated tau protein (MAPt), serum amyloid P (SAP), and neuroplasticity: neurotrophin 3 (NT3), neurotrophin 4 (NT4). The study was performed thrice in the acute period of the disease at the time of admission to the hospital and at 6 and 12 months after discharge.</p> <p><bold><italic>RESULTS</italic></bold><italic>:</italic> In the first group of patients, in the acute period of coronavirus infection, women showed higher concentrations of S100 A6 (3.2±0.2), S100 B (0.4±0.06), NT3 (1.1±0.1), and MAPt (0.13±0.02), while the values for the men were NEFH (0.15±0.03), Aβ1-42 (2.1±0.1), and SAP (4.5±0.06). In the long-term, a general tendency of long persistence of high levels of the markers of neurodegeneration and neuroprotection was noted in young men compared to women, indicating a long period of rehabilitation. After 12 months, the level of calcium-binding proteins S100 A6 and S100 B in men was 1.5±0.2 pg/mL and 0.3±0.04 ng/mL, which was 1.1±0.1 pg/mL and 0.2±0.04 ng/mL, respectively, in women. The level of SAP in men during the long-term period after 12 months was 4.3±0.1 versus 3.9±0.2 ng/mL in women, indicating a significant difference.</p> <p>Analyses of the results for the patients in the second group indicated a higher level of S100 A6 and Aβ1-42 in the acute period for women, while men showed higher levels of S100 B, NT3, and SAP.</p> <p><bold><italic>CONCLUSION</italic></bold><italic>:</italic> The changes in patients with coronavirus infection both in the acute and late periods indicated active neurodegeneration processes in different age groups, which manifested as a result of an increase in the concentration of specific proteins in the blood serum.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Обоснование</italic></bold><italic>.</italic> Исследования неврологических и психиатрических последствий коронавирусной инфекции представляют особую актуальность ввиду своей малой изученности. Молекулярные паттерны повреждения нервной ткани являются важной задачей для понимания происходящих механизмов нейродегенерации.</p> <p><bold><italic>Цель</italic></bold><italic> <bold>исследования</bold></italic> ― изучение динамики изменений содержания маркеров нейродегенерации и нейропластичности у пациентов с коронавирусной инфекцией в острый и отдалённые периоды.</p> <p><bold><italic>Материалы и методы</italic></bold><italic>.</italic> Пациенты в возрасте от 51 года до 83 лет (<italic>n</italic>=200), включённые в исследование, были поделены на две группы ― от 51 до 65 (группа 1) и от 66 до 83 лет (группа 2). В сыворотке крови определяли маркеры нейродегенерации: тяжёлые цепи нейрофиламентов (NEFH), белок S100 A6, белок S100 B, β-амилоид 1-42 (Aβ1-42), микрофиламент ассоциированный белок тау (MAPt), сывороточный амилоид Р (SAP), а также маркеры нейропластичности: нейротрофин 3 (NT3), нейротрофин 4 (NT4). Исследование выполняли трёхкратно ― в острый период болезни (на момент поступления в стационар) и после выписки (через 6 и 12 месяцев).</p> <p><bold><italic>Результаты</italic></bold><italic>.</italic> У женщин группы 1 в острый период коронавирусной инфекции отмечались более высокие концентрации S100 A6 (3,2±0,2), S100 B (0,4±0,06), NT3 (1,1±0,1), MAPt (0,13±0,02); у мужчин были выше показатели NEFH (0,15±0,03), Aβ1-42 (2,1±0,1), SAP (4,5±0,06). В отдалённом периоде отмечалась общая тенденция к длительному и высокому персистированию маркеров нейродегенерации и нейропротекции у молодых мужчин по сравнению с женщинами, что свидетельствует о длительном периоде реабилитации. Через 12 месяцев уровень кальцийсвязывающих белков S100 A6 и S100 B у мужчин составлял 1,5±0,2 пг/мл и 0,3±0,04 нг/мл, у женщин ― 1,1±0,1 пг/мл и 0,2±0,04 нг/мл соответственно. Уровень SAP у мужчин в отдалённом периоде (через 12 месяцев) был 4,3±0,1 против 3,9±0,2 нг/мл у женщин, что составляет достоверное отличие.</p> <p>Анализируя результаты, полученные у пациентов группы 2, обнаружено, что в острый период у женщин выше концентрации S100 A6 и Aβ1-42, у мужчин ― S100 B, NT3, SAP.</p> <p><bold><italic>Заключение</italic></bold><italic>.</italic> Выявленные как в острый, так и отдалённый периоды изменения у пациентов с коронавирусной инфекцией свидетельствуют об активных процессах нейродегенерации в различных возрастных группах, что проявляется повышением концентрации специфических белков в сыворотке крови.</p></trans-abstract><kwd-group xml:lang="en"><kwd>coronavirus infection</kwd><kwd>neurodegeneration</kwd><kwd>neuroplasticity</kwd><kwd>COVID-19</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>коронавирусная инфекция</kwd><kwd>нейродегенерация</kwd><kwd>нейропластичность</kwd><kwd>COVID-19</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Shashel VA, Podporina LA, Pervishko OV. 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