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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">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1814-6023-2022-19-2-240-247</article-id><article-id custom-type="elpub" pub-id-type="custom">vestim-848</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>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Спектр сопутствующих сосудистых поражений мозга при диффузных глиомах у детей</article-title><trans-title-group xml:lang="en"><trans-title>Spectrum of concomitant brain vascular lesions in pediatric diffuse gliomas</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7134-8923</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михалевская</surname><given-names>Т. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhaleuskaya</surname><given-names>T. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михалевская Таисия Михайловна  – заведующий лабораторией</p><p>ул. Фрунзенская, 43, 223053, д. Боровляны, Минский р-н</p></bio><bio xml:lang="en"><p>Taisiya M. Mikhaleuskaya ‒ Head of the Laboratory</p><p>43, Frunzenskaya Str., 223053, v. Borovliany, Minsk region</p></bio><email xlink:type="simple">aisiat@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2604-324X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капуза</surname><given-names>Д. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapuza</surname><given-names>D. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Капуза Дарья Романовна – биолог</p><p>ул. Фрунзенская, 43, 223053, д. Боровляны, Минский р-н</p></bio><bio xml:lang="en"><p>Darya R. Kapuza – biologist</p><p>43, Frunzenskaya Str., 223053, v. Borovliany, Minsk region</p></bio><email xlink:type="simple">kolodich.darya@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0592-7182</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Конопля</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Konoplya</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Конопля Наталья Евгеньевна – доктор медицинских наук, профессор, главный научный сотрудник</p><p>23040, а/г Лесной, Минский р-н</p></bio><bio xml:lang="en"><p>Natalya E. Konoplya ‒ D. Sc. (Med.), Professor, Chief Researcher</p><p>223040, Lesnoy, Minsk region</p></bio><email xlink:type="simple">nkonoplya@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3232-2322</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Быданов</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Bydanov</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Быданов Олег Иванович ‒ научный сотрудник</p><p>ул. Фрунзенская, 43, 223053, д. Боровляны, Минский р-н</p></bio><bio xml:lang="en"><p>Oleg I. Bydanov – Researcher</p><p>43, Frunzenskaya Str., 223053, v. Borovliany, Minsk region</p></bio><email xlink:type="simple">budanov@oncology.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Республиканский научно-практический центр детской онкологии, гематологии и иммунологии</institution></aff><aff xml:lang="en"><institution>Republican Research Center for Pediatric Oncology, Hematology and Immunology</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Республиканский научно-практический центр онкологии и медицинской радиологии им. Н. Н. Александрова</institution></aff><aff xml:lang="en"><institution>N. N. Alexandrov National Cancer Centre</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>08</day><month>06</month><year>2022</year></pub-date><volume>19</volume><issue>2</issue><fpage>240</fpage><lpage>247</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Михалевская Т.М., Капуза Д.Р., Конопля Н.Е., Быданов О.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Михалевская Т.М., Капуза Д.Р., Конопля Н.Е., Быданов О.И.</copyright-holder><copyright-holder xml:lang="en">Mikhaleuskaya T.M., Kapuza D.R., Konoplya N.E., Bydanov O.I.</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://vestimed.belnauka.by/jour/article/view/848">https://vestimed.belnauka.by/jour/article/view/848</self-uri><abstract><p>Цереброваскулярные заболевания являются одной из основных причин инвалидизации выживших пациентов c опухолями мозга. Однако изучению сосудистых поражений при опухолях мозга посвящено лишь незначительное число исследований. Цель нашего исследования ‒ охарактеризовать сопутствующие сосудистые поражения при наиболее распространенных диффузных глиальных опухолях у детей и оценить возможность их появления в опухолях различных молекулярных подгрупп. Проведено ретроспективное гистологическое исследование биоптатов 77 пациентов с диффузными глиомами, пролеченных в Центре детской онкологии, гематологии и иммунологии. На основании экспрессии суррогатных иммуногистохимических маркеров и цитогенетических аберраций выявлено 8 молекулярных подгрупп (H3K27mut, ALT, IDH1mut, BRAFmut-PXA, BRAFmut/FGFR2, FGFR1, RTK, MYB). В каждой из подгрупп проведено определение плотности и площади микрососудов, наличия коопции сосудов опухоли и признаков болезни мелких сосудов. Показатели микроваскуляризации достоверно различались между молекулярными подгруппами диффузных глиом, что свидетельствует о наличии внутренней проангиогенной активности в отдельных группах глиом. Наибольшие значения площади и плотности микрососудов, а также частоты геморрагических некрозов выявлены в BRAFmut/FGFR2, RTK подгруппах. Признаки болезни мелких сосудов в прилежащих к опухоли тканях были обнаружены в 32,5 % случаев. Наличие болезни мелких сосудов 2–3-й степени по Eziri было ассоциировано с опухолями BRAFmut/FGFR2 и IDH1mut подгрупп. Опухоли BRAFmut/FGFR2 подгруппы являются более агрессивными и вызывают микроинфаркты в 84,6 % случаях и лейкоареоз в 87,5 % случаях. Для опухолей IDH1mut подгруппы более характерно развитие микроинфарктов в коре (60 % случаев). Результаты исследования показывают, что сопутствующие сосудистые поражения часто встречаются в перифокальной опухолевой ткани и могут значительно влиять на риск возникновения цереброваскулярных заболеваний у реконвалесцентов с диффузными глиальными опухолями.</p><p> </p></abstract><trans-abstract xml:lang="en"><p>Cerebrovascular disease represents a threatening factor for brain cancer survivors. However, a comprehensive evaluation of small vessel disease related to gliomas has not yet been performed. This study aims to characterize concomitant vascular lesions in pediatric diffuse gliomas and identify their association with the molecular subgroup of tumors. We performed a retrospective pathological study of biopsy samples of 77 pediatric patients with diffuse gliomas, treated in Belarusian Research Center for Pediatric Oncology, Hematology and Immunology. Eight molecular subgroups were identified by immunohistochemical and cytogenetic studies (H3K27mut, ALT, IDH1mut, BRAFmut-PXA, FGFR1, BRAFmut/FGFR2, RTK, MYB). In each group microvessel density/area (MVD/MVA), tumor vessels co-option and signs of small vessels disease (SVD) were determined. The levels of microvascularization significantly differed between the molecular subgroups of diffuse gliomas, indicating the presence of intrinsic pro-angiogenic activity there. The highest values of MVD/MVA, as well as rate of hemorrhagic necrosis, were found in the BRAFmut/FGFR2, RTK groups. SVD was common in the adjacent tissues of gliomas and occurred in 32.5 % of cases. High grade SVD was associated with the BRAFmut/FGFR2 and IDH1mut subgroups. BRAFmut/FGFR2 tumors were more aggressive and caused cortical microinfarctions in 84,6 % and leukoaraiosis in 87.5 % of cases. IDH1mut tumors were mainly linked with cortical microinfarctions (60 % of cases). The results of the study suggest that concomitant small vascular lesions are common in adjacent tumor tissue and can significantly influence the overall rate of cerebrovascular disease in convalescents with diffuse gliomas.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>диффузные глиомы у детей</kwd><kwd>ангиогенез</kwd><kwd>болезнь мелких сосудов</kwd><kwd>мутация BRAF</kwd><kwd>мутация IDH1</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pediatric diffuse gliomas</kwd><kwd>angiogenesis</kwd><kwd>small vessels disease</kwd><kwd>BRAF mutation</kwd><kwd>IDH1mutation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kneihsl M., Enzinger C., Wünsch G., Khalil M., Culea V., Urbanic-Purkart T., Payer F., Niederkorn K., Fazekas F., Gattringer T. Poor short-term outcome in patients with ischaemic stroke and active cancer. 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