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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">epilepsia</journal-id><journal-title-group><journal-title xml:lang="en">Epilepsy and paroxysmal conditions</journal-title><trans-title-group xml:lang="ru"><trans-title>Эпилепсия и пароксизмальные состояния</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2077-8333</issn><issn pub-type="epub">2311-4088</issn><publisher><publisher-name>IRBIS LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17749/2077-8333/epi.par.con.2020.041</article-id><article-id custom-type="elpub" pub-id-type="custom">epilepsia-622</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="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group></article-categories><title-group><article-title>Features of brain electrical activity in adult patients with POLG-related disorders</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности биоэлектрической активности головного мозга у взрослых пациентов с POLG-ассоциированными заболеваниями</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9907-9393</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федин</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedin</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Федин Павел Анатольевич – к.м.н., ведущий научный сотрудник лаборатории клинической нейрофизиологии </p><p>РИНЦ SPIN-код: 4717-2751</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Pavel A. Fedin – Cand. Med. Sc., Leading Researcher, Laboratory of Clinical Neurophysiology</p><p>RSCI SPIN-code: 4717-2751 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3179-7668</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нужный</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Nuzhnyi</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нужный Евгений Петрович – к.м.н., врач-невролог 5-го неврологического отделения </p><p>РИНЦ SPIN-код: 5571-3386</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Evgenii P. Nuzhnyi – Cand. Med. Sc., Neurologist, 5th Neurological Department</p><p>RSCI SPIN-code: 5571-3386 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><email xlink:type="simple">enuzhny@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/0000-0002-1634-1497</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Носкова</surname><given-names>Т. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Noskova</surname><given-names>T. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Носкова Татьяна Юрьевна – к.м.н., старший научный сотрудник научно-консультативного отделения </p><p>РИНЦ SPIN-код: 2742-2148</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Tatiana Yu. Noskova – Cand. Med. Sc., Senior Researcher, Scientific and Consulting Department</p><p>RSCI SPIN-code: 2742-2148 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6400-6378</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Селивёрстов</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Seliverstov</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Селивёрстов Юрий Александрович – к.м.н., научный сотрудник научно-координационного и образовательного отдела</p><p>РИНЦ SPIN-код: 3876-6987</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Yury A. Seliverstov – Cand. Med. Sc., Researcher, Department of Scientific Coordination and Education</p><p>RSCI SPIN-code: 3876-6987 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8752-7045</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клюшников</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Klyushnikov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клюшников Сергей Анатольевич – к.м.н., ведущий научный сотрудник 5-го неврологического отделения </p><p>РИНЦ SPIN-код: 1769-2262</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Sergey A. Klyushnikov – Cand. Med. Sc., Leading Researcher, 5th Neurological Department</p><p>RSCI SPIN-code: 1769-2262 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крылова</surname><given-names>Т. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylova</surname><given-names>T. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крылова Татьяна Дмитриевна – научный сотрудник лаборатории наследственных болезней обмена веществ </p><p>РИНЦ SPIN-код: 8335-2050</p><p>ул. Москворечье, 1, Москва 115478</p></bio><bio xml:lang="en"><p>Tatiana D. Krylova – Researcher, Laboratory of Hereditary Metabolic Diseases</p><p>RSCI SPIN-code: 8335-2050 </p><p>1 Moskvorechye Str., Moscow 115522</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3998-3609</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цыганкова</surname><given-names>П. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsygankova</surname><given-names>P. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цыганкова Полина Георгиевна – к.б.н., старший научный сотрудник лаборатории наследственных болезней обмена веществ </p><p>РИНЦ SPIN-код: 1121-3671</p><p>ул. Москворечье, 1, Москва 115478</p></bio><bio xml:lang="en"><p>Polina G. Tsygankova – Cand. Biol. Sc., Senior Researcher, Laboratory of Hereditary Metabolic Diseases</p><p>RSCI SPIN-code: 1121-3671 </p><p>1 Moskvorechye Str., Moscow 115522</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захарова</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharova</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Захарова Екатерина Юрьевна – д.м.н., заведующая лабораторией наследственных болезней обмена веществ </p><p>РИНЦ SPIN-код: 7296-6097</p><p>ул. Москворечье, 1, Москва 115478</p></bio><bio xml:lang="en"><p>Ekaterina Yu. Zakharova – Dr. Med. Sc., Head of Laboratory of Hereditary Metabolic Diseases</p><p>RSCI SPIN-code: 7296-6097 </p><p>1 Moskvorechye Str., Moscow 115522</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2704-6282</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иллариошкин</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Illarioshkin</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иллариошкин Сергей Николаевич – д.м.н., профессор, чл.-корр. РАН, руководитель отдела исследований мозга</p><p>РИНЦ SPIN-код: 8646-9426</p><p>Волоколамское ш., 80, Москва 125367</p></bio><bio xml:lang="en"><p>Sergey N. Illarioshkin – Dr. Med. Sc., Professor, Corresponding Member of RAS, Head of the Department of Brain Research</p><p>RSCI SPIN-code: 8646-9426 </p><p>80 Volokolamskoye shosse, Moscow 125367</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение «Научный центр неврологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Center of Neurology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение «Медико-генетический научный центр им. академика Н.П. Бочкова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bochkov Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>02</month><year>2021</year></pub-date><volume>12</volume><issue>4</issue><fpage>205</fpage><lpage>215</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Fedin P.A., Nuzhnyi E.P., Noskova T.Y., Seliverstov Y.A., Klyushnikov S.A., Krylova T.D., Tsygankova P.G., Zakharova E.Y., Illarioshkin S.N., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Федин П.А., Нужный Е.П., Носкова Т.Ю., Селивёрстов Ю.А., Клюшников С.А., Крылова Т.Д., Цыганкова П.Г., Захарова Е.Ю., Иллариошкин С.Н.</copyright-holder><copyright-holder xml:lang="en">Fedin P.A., Nuzhnyi E.P., Noskova T.Y., Seliverstov Y.A., Klyushnikov S.A., Krylova T.D., Tsygankova P.G., Zakharova E.Y., Illarioshkin S.N.</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://www.epilepsia.su/jour/article/view/622">https://www.epilepsia.su/jour/article/view/622</self-uri><abstract><p>Introduction. Epilepsy is a common feature of mitochondrial disorders, including those associated with mutations in the POLG gene. Nevertheless, brain electrical activity features of POLG-related disorders in adult patients have not been adequately studied. Objective. To study the features and characteristics of the electroencephalography (EEG) pattern in adult patients with POLG-related disorders. Material and methods. Eight patients were examined: 7 with SANDO (Sensory Ataxic Neuropathy, Dysarthria, Ophthalmoparesis) syndrome, and 1 with MEMSA (Myoclonic Epilepsy Myopathy Sensory Ataxia) syndrome; median age was 32.5 years. All patients underwent routine EEG monitoring using a 19-channel electroencephalograph according to the generally accepted method. Results. Epileptic seizures were found in 3 patients, for 2 of them – as the first manifestation of the disease. In 6 patients, theta waves predominated in the occipital regions. Of those 6 patients, in 5 bilateral synchronous bursts of theta and delta wave groups were identified being more prominent in the frontocentral regions; 4 patients had transient non-lateralized delta activity in the occipital and parieto-occipital brain regions. In all patients, opening eyes led to the depression of rhythms and burst suppression. After photostimulation, in 2 cases bilateral synchronous bursts of delta and theta wave groups were recorded predominantly in frontal lobes. In 3 patients during hyperventilation an increase in delta activity in the occipital lobes and bilateral synchronous bursts of delta wave groups were observed. Epileptiform activity was recorded in 2 cases. Conclusion. In adult patients with POLG-related disorders, regardless of the clinical manifestation, typical EEG features include generalized background slowing, theta and delta bursts in occipital lobes with their suppression by opening eyes.</p></abstract><trans-abstract xml:lang="ru"><p>Введение. Эпилепсия является распространенным проявлением митохондриальных болезней, в том числе связанных с мутациями в гене POLG. Тем не менее электроэнцефалографические (ЭЭГ) особенности POLGассоциированных заболеваний у взрослых пациентов изучены недостаточно. Цель: изучить особенности и характеристики ЭЭГ-картины у взрослых пациентов с POLG-ассоциированными заболеваниями. Материал и методы. Обследованы 8 больных: 7 с синдромом SANDO (англ. Sensory Ataxic Neuropathy, Dysarthria, Ophthalmoparesis) и 1 с синдромом MEMSA (англ. Myoclonic Epilepsy Myopathy Sensory Ataxia); медиана возраста составила 32,5 года. Всем пациентам выполнена рутинная ЭЭГ на 19-канальном электроэнцефалографе по общепринятой методике. Результаты. Эпилептические приступы наблюдались у 3 больных, у 2 – как первое проявление заболевания. У 6 пациентов в фоновой записи преобладала тета-активность в затылочных отделах, из них у 5 регистрировались билатерально-синхронные вспышки групп волн тета- и дельта-диапазона, более выраженные в лобно-центральных отделах; у 4 – преходящая нелатерализованная дельта-активность в затылочных и затылочно-теменных отделах. Открывание глаз приводило к депрессии ритмов и подавлению вспышек у всех больных. После ритмической фотостимуляции у 2 пациентов отмечены билатерально-синхронные вспышки групп тета- и дельта-волн, преобладающие в лобных отделах. При гипервентиляции у 3 больных наблюдались усиление дельта-активности в затылочных отделах, а также билатерально-синхронные вспышки групп дельта-волн. Эпилептиформная активность регистрировалась у 2 пациенток. Заключение. Характерной ЭЭГ-картиной у взрослых пациентов с POLG-ассоциированными заболеваниями независимо от клинической картины являются замедление фоновой активности, наличие вспышек тета- и дельтаволн в задних отделах головного мозга, которые подавляются при открывании глаз.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>митохондриальные заболевания</kwd><kwd>ген POLG</kwd><kwd>синдром SANDO</kwd><kwd>синдром MEMSA</kwd><kwd>электроэнцефалография</kwd><kwd>эпилепсия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mitochondrial disorders</kwd><kwd>POLG gene</kwd><kwd>SANDO syndrome</kwd><kwd>MEMSA syndrome</kwd><kwd>electroencephalography</kwd><kwd>epilepsy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Российского фонда фундаментальных исследований в рамках научного проекта № 19-015-00171.</funding-statement><funding-statement xml:lang="en">The study was performed with the financial support of the Russian Foundation for Basic Research, research project No. 19-015-00171.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Руденская Г.Е., Захарова Е.Ю. 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