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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.2025.213</article-id><article-id custom-type="elpub" pub-id-type="custom">epilepsia-1207</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>Epilepsy, epileptiform discharges and features of brain magnetic resonance imaging in merosin-deficient muscular dystrophy</article-title><trans-title-group xml:lang="ru"><trans-title>Эпилепсия, эпилептиформные разряды и особенности магнитнорезонансной томографии головного мозга при мерозин-дефицитной мышечной дистрофии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9828-9348</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Монахова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Monakhova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Монахова Анастасия Вячеславовна</p><p>ул. Талдомская, д. 2, Москва 125412</p></bio><bio xml:lang="en"><p>Anastasiya V. Monakhova</p><p>2 Taldomskaya Str., Moscow 125412</p></bio><email xlink:type="simple">stasya1803@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/0000-0003-3594-6974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белоусова</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Belousova</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белоусова Елена Дмитриевна, д.м.н., проф.</p><p>Scopus Author ID: 24767524000</p><p>ул. Талдомская, д. 2, Москва 125412</p></bio><bio xml:lang="en"><p>Elena D. Belousova, Dr. Sci. Med., Prof.</p><p>Scopus Author ID: 24767524000</p><p>2 Taldomskaya Str., Moscow 125412</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/0000-0001-9286-7805</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горчханова</surname><given-names>З. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorchkhanova</surname><given-names>Z. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горчханова Зарета Казбулатовна, к.м.н.</p><p>ул. Талдомская, д. 2, Москва 125412</p></bio><bio xml:lang="en"><p>Zareta K. Gorchkhanova, PhD</p><p>2 Taldomskaya Str., Moscow 125412</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Обособленное структурное подразделение «Научно-исследовательский клинический институт педиатрии и детской хирургии им. академика Ю.Е. Вельтищева» федерального государственного автономного образовательного учреждения высшего образования «Российский национальный исследовательский медицинский университет им. Н.И. Пирогова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Veltishchev Research Clinical Institute of Pediatrics and Pediatric Surgery, Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>18</day><month>07</month><year>2025</year></pub-date><volume>17</volume><issue>2</issue><fpage>142</fpage><lpage>152</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Monakhova A.V., Belousova E.D., Gorchkhanova Z.K., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Монахова А.В., Белоусова Е.Д., Горчханова З.К.</copyright-holder><copyright-holder xml:lang="en">Monakhova A.V., Belousova E.D., Gorchkhanova Z.K.</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/1207">https://www.epilepsia.su/jour/article/view/1207</self-uri><abstract><p>Background. Merosin-deficient muscular dystrophy (MDMD) is a neuromuscular disease resulting from the emergence of biallelic variants in the LAMA2 gene and manifested by progressive muscle weakness, diffuse hypotonia, impaired posture, contractures of large joints, and respiratory pathology. Epilepsy is a common symptom of MDMD. However, at the moment, the clinical course of epilepsy in MDMD remains understudied.Objective: To determine the features of epilepsy, electroencephalographic (EEG), radiological characteristics in MDMD patients, to identify a relation between brain pathological changes and the course of epilepsy, pathology on the EEG data and the location of nucleotide sequence variants within the LAMA2 gene.Material and methods. The study analyzed the EEG from 63 subjects with a genetically verified MDMD diagnosis. At the Veltishchev Research Clinical Institute of Pediatrics and Pediatric Surgery, an interictal EEG was carried out in 29 patients, the native data of an interictal EEG performed at the place of residence were collected and reanalyzed for 34 patients. Clinical and neurological statuses were assessed in all patients; 55 patients underwent brain magnetic resonance imaging (MRI).Results. Epilepsy was observed in 12 of 63 (19%) patients with MDMD and was characterized by a relatively late onset – 11.5 years of age. A predominantly focal seizure pattern was noted: 7 of 12 (58.4%) patients. The percentage of pharmacoresistance was comparable to epilepsy in general and amounted to 4 of 12 (33.3%) cases. Twelve of 51 (23.5%) subjects without epileptic seizures had EEG-verified epileptiform activity. Changes in brain MRI were represented by leukopathy, which was registered in all patients aged above 1 year old, as well as bilateral occipital pachygyria in 4 of 63 (6.3%) cases. In the presented group, no statistically significant relationship between disease form, EEG changes, central nervous system pathology and the presence of nucleotide sequence variants in the LG domain was found. The lack of correlation between such parameters may be due to a relatively small number of patients examined.Conclusion. Our study has advanced in understanding the course of epilepsy in MDMD. Given the presence of somatic complications masking epileptic seizures, it is necessary to be alert for epilepsy for timely diagnostics and care in this group of patients.</p></abstract><trans-abstract xml:lang="ru"><p>Актуальность. Мерозин-дефицитная мышечная дистрофия (МДМД) – это нервно-мышечное заболевание, которое возникает в результате появления биаллельных вариантов в гене LAMA2 и проявляется прогрессирующей мышечной слабостью, диффузной гипотонией, нарушением осанки, контрактурами крупных суставов, респираторной патологией. Эпилепсия является частым симптомом МДМД, однако в настоящий момент клиническое течение эпилепсии при МДМД остается недостаточно изученным.Цель: определение особенностей эпилепсии, электроэнцефалографических (ЭЭГ) и радиологических характеристик у пациентов с МДМД, выявление взаимосвязи патологических изменений в головном мозге с течением эпилепсии, патологией на ЭЭГ и расположением вариантов нуклеотидной последовательности в гене LAMA2.Материал и методы. Проанализированы ЭЭГ 63 человек в возрасте от 6 мес до 29 лет с генетически подтвержденным диагнозом МДМД. В Научно-исследовательском клиническом институте педиатрии и детской хирургии им. академика Ю.Е. Вельтищева межприступная ЭЭГ проведена 29 пациентам, у 34 больных изучены нативные данные межприступной ЭЭГ, выполненной по месту жительства. Во всех случаях оценивались клинический и неврологический статусы, 55 пациентам проведена магнитно-резонансная томография (МРТ) головного мозга.Результаты. Эпилепсия наблюдалась у 12 из 63 (19%) пациентов с МДМД и характеризовалась относительно поздним дебютом – 11,5 года. Отмечен преимущественно фокальный характер приступов: у 7 из 12 (58,4%) больных. Доля случаев фармакорезистентности была сопоставима с эпилепсией в целом и составила 33,3% (4 из 12). У 12 из 51 человека (23,5%) без эпилептических приступов зарегистрирована эпилептиформная активность на ЭЭГ. Изменения на МРТ головного мозга были представлены лейкопатией, которая подтверждена у всех пациентов старше 1 года, а также двусторонней затылочной пахигирией в 4 из 63 случаев (6,3%). В представленной выборке не было установлено статистически значимой взаимосвязи между формой заболевания, изменениями на ЭЭГ, патологией центральной нервной системы и наличием вариантов нуклеотидной последовательности в LG-домене. Отсутствие корреляции может быть связано с относительно небольшим числом пациентов.Заключение. Наше исследование вносит вклад в понимание течения эпилепсии при МДМД. Учитывая наличие соматических осложнений, маскирующих эпилептические приступы, для своевременной установки диагноза и оказания помощи необходимо проявлять настороженность в отношении эпилепсии у данной группы пациентов.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мерозин-дефицитная мышечная дистрофия</kwd><kwd>эпилепсия</kwd><kwd>электроэнцефалография</kwd><kwd>ген LAMA2</kwd><kwd>мерозин</kwd><kwd>приступы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>merosin-deficient muscular dystrophy</kwd><kwd>epilepsy</kwd><kwd>electroencephalography</kwd><kwd>LAMA2 gene</kwd><kwd>merosin</kwd><kwd>seizures</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">Messina S., Bruno C., Moroni I., et al. Congenital muscular dystrophies with cognitive impairment. A population study. Neurology. 2010; 75 (10): 898–903. https://doi.org/10.1212/WNL.0b013e3181f11dd5.</mixed-citation><mixed-citation xml:lang="en">Messina S., Bruno C., Moroni I., et al. Congenital muscular dystrophies with cognitive impairment. A population study. Neurology. 2010; 75 (10): 898–903. https://doi.org/10.1212/WNL.0b013e3181f11dd5.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Jones K.J., Morgan G., Johnston H., et al. The expanding phenotype of laminin alpha2 chain (merosin) abnormalities: case series and review. J Med Genet. 2001; 38 (10): 649–57. https://doi.org/10.1136/jmg.38.10.649.</mixed-citation><mixed-citation xml:lang="en">Jones K.J., Morgan G., Johnston H., et al. The expanding phenotype of laminin alpha2 chain (merosin) abnormalities: case series and review. J Med Genet. 2001; 38 (10): 649–57. https://doi.org/10.1136/jmg.38.10.649.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Geranmayeh F., Clement E., Feng L.H., et al. Genotype-phenotype correlation in a large population of muscular dystrophy patients with LAMA2 mutations. Neuromuscul Disord. 2010; 20 (4): 241–50. https://doi.org/10.1016/j.nmd.2010.02.001.</mixed-citation><mixed-citation xml:lang="en">Geranmayeh F., Clement E., Feng L.H., et al. Genotype-phenotype correlation in a large population of muscular dystrophy patients with LAMA2 mutations. Neuromuscul Disord. 2010; 20 (4): 241–50. https://doi.org/10.1016/j.nmd.2010.02.001.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Oliveira M.E., Moreira A., Coelho T., et al. LAMA2 gene analysis in a cohort of 26 congenital muscular dystrophy patients. Clin Genet. 2008; 74 (6): 502–12. https://doi.org/10.1111/j.1399-0004.2008.01068.x.</mixed-citation><mixed-citation xml:lang="en">Oliveira M.E., Moreira A., Coelho T., et al. LAMA2 gene analysis in a cohort of 26 congenital muscular dystrophy patients. Clin Genet. 2008; 74 (6): 502–12. https://doi.org/10.1111/j.1399-0004.2008.01068.x.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Tan D., Ge L., Fan Y., et al. Natural history and genetic study of LAMA2-related muscular dystrophy in a large Chinese cohort. Orphanet J Rare Dis. 2021; 16 (1): 319. https://doi.org/10.1186/s13023-021-01950-x.</mixed-citation><mixed-citation xml:lang="en">Tan D., Ge L., Fan Y., et al. Natural history and genetic study of LAMA2-related muscular dystrophy in a large Chinese cohort. Orphanet J Rare Dis. 2021; 16 (1): 319. https://doi.org/10.1186/s13023-021-01950-x.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Huang X., Tan D., Zhang Z., et al. Unique genotype-phenotype correlations within LAMA2-related limb girdle muscular dystrophy in Chinese patients. Front. Neurol. 2023; 14: 1158094. https://doi.org/10.3389/fneur.2023.1158094.</mixed-citation><mixed-citation xml:lang="en">Huang X., Tan D., Zhang Z., et al. Unique genotype-phenotype correlations within LAMA2-related limb girdle muscular dystrophy in Chinese patients. Front. Neurol. 2023; 14: 1158094. https://doi.org/10.3389/fneur.2023.1158094.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Natera-de Benito D., Muchart J., Itzep D., et al. Epilepsy in LAMA2-related muscular dystrophy: an electro-clinico-radiological characterization. Epilepsia. 2020; 61 (5): 971–83. https://doi.org/10.1111/epi.16493.</mixed-citation><mixed-citation xml:lang="en">Natera-de Benito D., Muchart J., Itzep D., et al. Epilepsy in LAMA2-related muscular dystrophy: an electro-clinico-radiological characterization. Epilepsia. 2020; 61 (5): 971–83. https://doi.org/10.1111/epi.16493.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Salvati A., Bonaventura E., Sesso G., et al. Epilepsy in LAMA2-related muscular dystrophy: a systematic review of the literature. Seizure. 2021; 91: 425–36. https://doi.org/10.1016/j.seizure.2021.07.020.</mixed-citation><mixed-citation xml:lang="en">Salvati A., Bonaventura E., Sesso G., et al. Epilepsy in LAMA2-related muscular dystrophy: a systematic review of the literature. Seizure. 2021; 91: 425–36. https://doi.org/10.1016/j.seizure.2021.07.020.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Camelo C.G., Artilheiro M.C., Martins Moreno C.A., et al. Brain MRI abnormalities, epilepsy and intellectual disability in LAMA2 related dystrophy – a genotype/phenotype correlation. J Neuromuscul Dis. 2023; 10 (4): 483–92. https://doi.org/10.3233/JND-221638.</mixed-citation><mixed-citation xml:lang="en">Camelo C.G., Artilheiro M.C., Martins Moreno C.A., et al. Brain MRI abnormalities, epilepsy and intellectual disability in LAMA2 related dystrophy – a genotype/phenotype correlation. J Neuromuscul Dis. 2023; 10 (4): 483–92. https://doi.org/10.3233/JND-221638.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Menezes M.J., McClenahan F.K., Leiton C.V., et al. The extracellular matrix protein laminin α2 regulates the maturation and function of the blood-brain barrier. J Neurosci. 2014; 34 (46): 15260–80. https://doi.org/10.1523/JNEUROSCI.3678-13.2014.</mixed-citation><mixed-citation xml:lang="en">Menezes M.J., McClenahan F.K., Leiton C.V., et al. The extracellular matrix protein laminin α2 regulates the maturation and function of the blood-brain barrier. J Neurosci. 2014; 34 (46): 15260–80. https://doi.org/10.1523/JNEUROSCI.3678-13.2014.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Arreguin A.J., Colognato H. Brain dysfunction in LAMA2-related congenital muscular dystrophy: lessons from human case reports and mouse models. Front Mol Neurosci. 2020; 13: 118. https://doi.org/10.3389/fnmol.2020.00118.</mixed-citation><mixed-citation xml:lang="en">Arreguin A.J., Colognato H. Brain dysfunction in LAMA2-related congenital muscular dystrophy: lessons from human case reports and mouse models. Front Mol Neurosci. 2020; 13: 118. https://doi.org/10.3389/fnmol.2020.00118.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Миловидова Т.Б., Булах М.В., Щагина О.А., Поляков А.В. Молекулярно-генетический анализ врожденной мерозин-дефицитной мышечной дистрофии в России. Медицинская генетика. 2018; 17 (7): 38–45.</mixed-citation><mixed-citation xml:lang="en">Milovidova T.B., Bulach M.V., Schagina O.A., Polyakov A.V. Molecular genetic analysis of congenital merozin-negative muscular dystrophy in Russia. Medical Genetics. 2018; 17 (7): 38–45 (in Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Gawlik K.I., Durbeej M. A family of laminin α2 chain-deficient mouse mutants: advancing the research on LAMA2-CMD. Front Mol Neurosci. 2020; 13: 59. https://doi.org/10.3389/fnmol.2020.00059.</mixed-citation><mixed-citation xml:lang="en">Gawlik K.I., Durbeej M. A family of laminin α2 chain-deficient mouse mutants: advancing the research on LAMA2-CMD. Front Mol Neurosci. 2020; 13: 59. https://doi.org/10.3389/fnmol.2020.00059.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Yurchenco P.D., McKee K.K., Reinhard J.R., Rüegg M.A. Laminindeficient muscular dystrophy: molecular pathogenesis and structural repair strategies. Matrix Biol. 2018; 71: 174–87. https://doi.org/10.1016/j.matbio.2017.11.009.</mixed-citation><mixed-citation xml:lang="en">Yurchenco P.D., McKee K.K., Reinhard J.R., Rüegg M.A. Laminindeficient muscular dystrophy: molecular pathogenesis and structural repair strategies. Matrix Biol. 2018; 71: 174–87. https://doi.org/10.1016/j.matbio.2017.11.009.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Bönnemann C.G., Wang C.H., Quijano-Roy S., et al. Diagnostic approach to the congenital muscular dystrophies. Neuromuscul Disord. 2014; 24 (4): 289–311. https://doi.org/10.1016/j.nmd.2013.12.011.</mixed-citation><mixed-citation xml:lang="en">Bönnemann C.G., Wang C.H., Quijano-Roy S., et al. Diagnostic approach to the congenital muscular dystrophies. Neuromuscul Disord. 2014; 24 (4): 289–311. https://doi.org/10.1016/j.nmd.2013.12.011.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Белоусова Е.Д., Заваденко Н.Н., Холин А.А., Шарков А.А. Новые международные классификации эпилепсий и эпилептических приступов Международной лиги по борьбе с эпилепсией (2017). Журнал неврологии и психиатрии им. С.С. Корсакова. 2017; 117 (7): 99–106. https://doi.org/10.17116/jnevro20171177199-106.</mixed-citation><mixed-citation xml:lang="en">Belousova E.D., Zavadenko N.N., Kholin A.A., Sharkov A.A. Psychiatry of the future: an overview of foreign scientists opinions of the position of psychiatry in the modern world. S.S. Korsakov Journal of Neurology and Psychiatry. 2017; 117 (7): 99–106 (in Russ.). https://doi.org/10.17116/jnevro20171177199-106.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
