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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">Head and Neck Tumors</journal-id><journal-title-group><journal-title xml:lang="en">Head and Neck Tumors</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли головы и шеи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-1468</issn><issn publication-format="electronic">2411-4634</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1037</article-id><article-id pub-id-type="doi">10.17650/2222-1468-2025-15-1-12-19</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DIAGNOSIS AND TREATMENT OF HEAD AND NECK TUMORS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДИАГНОСТИКА И ЛЕЧЕНИЕ ОПУХОЛЕЙ ГОЛОВЫ И ШЕИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Indicators of the fibrinolytic system in the blood and cerebrospinal fluid of patients with metastatic brain lesions</article-title><trans-title-group xml:lang="ru"><trans-title>Показатели фибринолитической системы в крови и ликворе больных с метастатическим поражением головного мозга</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6265-8500</contrib-id><name-alternatives><name xml:lang="en"><surname>Goroshinskaya</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Горошинская</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Irina Aleksandrovna Goroshinskaya</bold> </p><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><bold>Ирина Александровна Горошинская </bold></p><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><email>iagor17@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3972-2452</contrib-id><name-alternatives><name xml:lang="en"><surname>Kaplieva</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Каплиева</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Babasinov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Бабасинов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rostorguev</surname><given-names>E. E.</given-names></name><name xml:lang="ru"><surname>Росторгуев</surname><given-names>Э. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2674-9832</contrib-id><name-alternatives><name xml:lang="en"><surname>Petrova</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Петрова</surname><given-names>Ю. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9749-2747</contrib-id><name-alternatives><name xml:lang="en"><surname>Trepitaki</surname><given-names>L. K.</given-names></name><name xml:lang="ru"><surname>Трепитаки</surname><given-names>Л. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3998-8004</contrib-id><name-alternatives><name xml:lang="en"><surname>Snezhko</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Снежко</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4680-8991</contrib-id><name-alternatives><name xml:lang="en"><surname>Vlasov</surname><given-names>S. G.</given-names></name><name xml:lang="ru"><surname>Власов</surname><given-names>С. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>63 14<sup>th</sup> Liniya St., Rostov-on-Don, 344037</italic></p></bio><bio xml:lang="ru"><p><italic>344037</italic><italic> </italic><italic>Ростов-на-Дону,</italic><italic> </italic><italic>ул. 14-я линия, 63</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Medical Research Center for Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-03-28" publication-format="electronic"><day>28</day><month>03</month><year>2025</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>12</fpage><lpage>19</lpage><history><date date-type="received" iso-8601-date="2025-03-28"><day>28</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-03-28"><day>28</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Goroshinskaya L.A., Kaplieva I.V., Babasinov A.A., Rostorguev E.E., Petrova Y.A., Trepitaki L.K., Snezhko A.V., Vlasov S.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Горошинская И.А., Каплиева И.В., Бабасинов А.А., Росторгуев Э.Е., Петрова Ю.А., Трепитаки Л.К., Снежко А.В., Власов С.Г.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Goroshinskaya L.A., Kaplieva I.V., Babasinov A.A., Rostorguev E.E., Petrova Y.A., Trepitaki L.K., Snezhko A.V., Vlasov S.G.</copyright-holder><copyright-holder xml:lang="ru">Горошинская И.А., Каплиева И.В., Бабасинов А.А., Росторгуев Э.Е., Петрова Ю.А., Трепитаки Л.К., Снежко А.В., Власов С.Г.</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ogsh.abvpress.ru/jour/article/view/1037">https://ogsh.abvpress.ru/jour/article/view/1037</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Brain metastases – the most common type of intracranial secondary neoplasms in adults – are characterized by high mortality and are the main cause of death in almost 1/5 of all oncological patients. For neoplasms of various locations, it was shown that fibrinolytic system plays a large role in malignant cell invasion.</p><p><bold>Aim. </bold>To evaluate the level and activity of the main components of the plasminogen activation system in blood and cerebrospinal fluid (CSF) of patients with brain metastases.</p><p><bold>Materials and methods. </bold>Using enzyme immunoassay, the main parameters of fibrinolytic system functioning were determined in plasma of 38 patients of both sexes aged 59.9 ± 8.9 years with morphologically verified primary pathological tumor and magnetic resonance imaging-confirmed intracranial metastatic lesions without dislocation syndrome. The level and activity of tissue-type plasminogen activator (tPA), urokinase-type plasminogen activator (uPA), plasminogen activator inhibitor type 1 (PAI-1) and urokinase receptor (uPAR) were measured. The results were compared to data from 18 individuals without oncological pathology (donor group). The levels and activity of uPA and tPA, as well as PAI-1 inhibitor and uPAR were also evaluated in CSF of 16 patients with brain metastases and 14 patients with benign brain tumors. Statistical data processing was performed using the Statistica 10.0 software.</p><p><bold>Results. </bold>In plasma of patients with brain metastases, tPA activity was increased 2.1-fold while its level was decreased 3.6-fold which increased their ratio 10-fold (<italic>p </italic>£0.0002). uPA activity did not change but its level, as well as uPAR level, activity and level of PAI-1 inhibitor and tPA and uPA were decreased. In CSF of patients with brain metastases, the levels of urokinase system components were lower compared to CSF of patients with benign brain tumors. For benign tumors, PAI-1 inhibitor level was 3.5 times higher than for brain metastases (<italic>p</italic><italic> </italic>= 0.0000), while there were no differences in tPA parameters in CSF.</p><p><bold>Conclusion.</bold><bold> </bold>In blood of patients with brain metastases, only tPA activation was observed. The results allow to propose that in patients with brain metastases, functional activity of urokinase system is not elevated in blood and, supposedly, in CSF in contrast to patients with primary malignant tumors of some locations.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold><bold> </bold>Метастатическое поражение головного мозга (МпгМ) – наиболее распространенный тип внутричерепных вторичных новообразований у взрослых – характеризуется высокой летальностью и является основной причиной смерти почти 1/5 онкологических больных. большую роль в инвазии злокачественных клеток играет фибринолитическая система, что показано при неоплазиях различной локализации.</p><p><bold>Цель исследования </bold>– оценить уровень и активность основных компонентов системы активации плазминогена в крови и ликворе больных с МпгМ.</p><p><bold>Материалы и методы. </bold>В плазме крови 38 пациентов обоего пола в возрасте 59,9 ± 8,9 года с морфологически верифицированным первичным патологическим очагом и установленным по данным магнитно-резонансной томографии головного мозга интракраниальным метастатическим поражением без наличия дислокационного синдрома методом иммуноферментного анализа исследованы основные показатели функционирования фибринолитической системы. Определены содержание и активность тканевого активатора плазминогена (tPA), активатора плазминогена урокиназного типа (uPA), ингибитора 1-го типа активаторов плазминогена (PAI-1) и уровень рецептора урокиназы (uPAR). Результаты сопоставлялись с данными 18 человек без онкологической патологии (группа доноров). уровни и активности uPA и tPA, а также уровни ингибитора PAI-1 и uPAR были также оценены в ликворе 16 больных с МпгМ и 14 пациентов с доброкачественными опухолями головного мозга. статистическую обработку результатов проводили с помощью программы Statistica 10.0.</p><p><bold>Результаты. </bold>В плазме крови больных с МпгМ наблюдалось увеличение в 2,1 раза активности tPA, что при снижении в 3,6 раза его уровня приводило к 10-кратному повышению их соотношения (<italic>p </italic>£0,0002). Активность uPA не изменялась, а его содержание, как и содержание uPAR, активность и содержание ингибитора PAI-1 и tPA и uPA были понижены. В ликворе больных с МпгМ уровни компонентов урокиназной системы оказались меньше по сравнению с их уровнями в ликворе больных с доброкачественными опухолями головного мозга. при доброкачественных образованиях уровень ингибитора PAI-1 был в 3,5 раза выше, чем при МпгМ (<italic>p </italic>= 0,0000), в то время как различий в показателях tPA в ликворе не наблюдалось.</p><p><bold>Заключение. </bold>В крови больных с МпгМ выявлена активация лишь tPA. полученные результаты позволяют предположить, что у пациентов с МпгМ не наблюдается повышения функциональной активности урокиназной системы в крови и, по-видимому, в ликворе в отличие от пациентов с первичными злокачественными опухолями ряда локализаций.</p></trans-abstract><kwd-group xml:lang="en"><kwd>brain metastases</kwd><kwd>tissue-type plasminogen activators</kwd><kwd>urokinase-type plasminogen activators</kwd><kwd>urokinase receptor</kwd><kwd>plasminogen activator inhibitor</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>метастатическое поражение головного мозга</kwd><kwd>активаторы плазминогена тканевого типа</kwd><kwd>активаторы урокиназного типа</kwd><kwd>рецептор урокиназы</kwd><kwd>ингибитор активаторов плазминогена</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Tyagi A., Wu S.Y., Watabe K. 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