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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">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">408</article-id><article-id pub-id-type="doi">10.17816/psaic408</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Hyperhomocysteinemia in Parkinson’s disease – new variant of complications of ongoing therapy or specific biochemical marker of the disease?</article-title><trans-title-group xml:lang="ru"><trans-title>Гипергомоцистеинемия при болезни Паркинсона – новый вариант осложнений проводимой терапии или специфический биохимический маркер заболевания?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8988-3011</contrib-id><name-alternatives><name xml:lang="en"><surname>Litvinenko</surname><given-names>Igor V.</given-names></name><name xml:lang="ru"><surname>Литвиненко</surname><given-names>Игорь Вячеславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Professor, Head, Department of nervous diseases, Chief neurologist of the Russian Ministry of Defense</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, начальник каф. нервных болезней, главный невролог Минобороны России</p></bio><email>litvinenkoiv@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Odinak</surname><given-names>Miroslav M.</given-names></name><name xml:lang="ru"><surname>Одинак</surname><given-names>Мирослав Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>trufanovart@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sologub</surname><given-names>O. S.</given-names></name><name xml:lang="ru"><surname>Сологуб</surname><given-names>O. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>litvinenkoiv@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mogilnaya</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Могильная</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>litvinenkoiv@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Schmeleva</surname><given-names>V. M.</given-names></name><name xml:lang="ru"><surname>Шмелева</surname><given-names>В. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>litvinenkoiv@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Saharovskaya</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Сахаровская</surname><given-names>A. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>litvinenkoiv@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">S.M. Kirov Military Medical Academy</institution></aff><aff><institution xml:lang="ru">ФГБВОУ ВО «Военно-медицинская академия имени С.М. Кирова»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2008-06-14" publication-format="electronic"><day>14</day><month>06</month><year>2008</year></pub-date><volume>2</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>13</fpage><lpage>17</lpage><history><date date-type="received" iso-8601-date="2017-02-07"><day>07</day><month>02</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2008, Litvinenko I.V., Odinak M.M., Sologub O.S., Mogilnaya V.I., Schmeleva V.M., Saharovskaya A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2008, Litvinenko I.V., Odinak M.M., Sologub O.S., Mogilnaya V.I., Schmeleva V.M., Saharovskaya A.A.</copyright-statement><copyright-year>2008</copyright-year><copyright-holder xml:lang="en">Litvinenko I.V., Odinak M.M., Sologub O.S., Mogilnaya V.I., Schmeleva V.M., Saharovskaya A.A.</copyright-holder><copyright-holder xml:lang="ru">Litvinenko I.V., Odinak M.M., Sologub O.S., Mogilnaya V.I., Schmeleva V.M., Saharovskaya A.A.</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://annaly-nevrologii.com/pathID/article/view/408">https://annaly-nevrologii.com/pathID/article/view/408</self-uri><abstract xml:lang="en"><p> </p><p>Homocysteine is an amino acid with excitotoxic effect on the nervous system, and its elevated level is an independent risk factor for cerebrovascular disease and dementia. In order to evaluate pathogenic role of hyperhomocysteinemia in Parkinson’s disease (PD) we examined 102 patients and 50 control subjects by analyzing motor and cognitive functions in their relationships with the total plasma level of homocysteine. Among the examined patients, dementia was diagnosed in 58 persons. Mean homocysteine level in the demented PD patients significantly differed from that in PD patients without dementia (23.5±6.7 µmol/l vs. 12.9±2.8 µmol/l, respectively, p&lt;0.05). Multivariate regression analysis showed strong positive correlation between homocysteine level and duration of the disease (r=0.63, p&lt;0.001) and of levodopa therapy (r=0.71, p&lt;0.001). We found strong inverse correlation between hyperhomocysteinemia and neuropsychological scores by MMSE (r=–0.64, p&lt;0.001), FAB (r=–0.59, p&lt;0.001) and clock drawing test (r=–0.35, p&lt;0.001). At the same time, no correlation was found between daily L-dopa dose and plasma homocysteine level. Our study showed that hyperhomocysteinemia may contribute to the formation of cognitive decline in PD.</p>  <p> </p> <p> </p></abstract><trans-abstract xml:lang="ru"><p>Гомоцистеин является аминокислотой с эксайтотоксическим эффектом в отношении нервной системы, и ее повышенный уровень представляет собой фактор риска развития сосудистых заболеваний мозга и деменции. С целью уточнения патогенетической роли гипергомоцистеинемии при болезни Паркинсона (БП) нами были обследованы 102 пациента и 50 человек контрольной группы, у которых проводился анализ двигательной и когнитивной сфер во взаимосвязи с уровнем общего гомоцистеина в плазме крови. Среди обследованных пациентов деменция была выявлена у 58 человек. Среднее значение гомоцистеинемии в этой группе достоверно отличалось от такового у пациентов с БП, не осложненной деменцией (23,5±6,7 мкмоль/л и 12,9±2,8 мкмоль/л соответственно, р&lt;0,05). Многофакторный регрессионный анализ показал сильную положительную связь между уровнем гомоцистеина и продолжительностью заболевания (r=0,63, p&lt;0,001), а также длительностью приема препаратов леводопы (r=0,71, p&lt;0,001). Выявлена сильная отрицательная корреляционная связь между гипергомоцистеинемией и показателями нейропсихологического тестирования – по шкалам MMSE (r= –0,64, p&lt;0,001), FAB (r= –0,59, p&lt;0,001) и тесту рисования часов (r= –0,35, p&lt;0,001). Вместе с тем не получено корреляционной связи между суточной дозой леводопы и содержанием гомоцистеина в плазме крови. Проведенное исследование показало, что гипергомоцистеинемия может вносить вклад в формирование когнитивных нарушений при БП.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Parkinson's disease</kwd><kwd>dementia</kwd><kwd>homocysteine</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>болезнь Паркинсона</kwd><kwd>деменция</kwd><kwd>гомоцистеин</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Голубев В.Л., Левин Я.И., Вейн А.М. Болезнь Паркинсона и синдром паркинсонизма. М.: МЕДпресссинформ, 1999.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Зорилова И.В., Суслина З.А., Иллариошкин С.Н. и др. Мутация P1173L в гене метионин-синтазы (MTR) как причина гипергомоцистеинемии при ишемическом инсульте молодого возраста. Атмосфера. Нервные болезни 2004; 4: 33–35.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Иллариошкин С.Н. Конформационные болезни мозга. 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