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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">437</article-id><article-id pub-id-type="doi">10.17816/psaic437</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">Plastic reorganization of hippocampal synapses resulted from pharmacological blockade of type 1 cannabinoid receptors</article-title><trans-title-group xml:lang="ru"><trans-title>Пластическая реорганизация синапсов гиппокампа при фармакологической блокаде каннабиноидных рецепторов 1-го типа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Frumkina</surname><given-names>L. E.</given-names></name><name xml:lang="ru"><surname>Фрумкина</surname><given-names>Л. E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bobrov</surname><given-names>M. Yu.</given-names></name><name xml:lang="ru"><surname>Бобров</surname><given-names>M. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lyzhin</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Лыжин</surname><given-names>A. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Andrianova</surname><given-names>E. L.</given-names></name><name xml:lang="ru"><surname>Адрианова</surname><given-names>E. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koroleva</surname><given-names>S. K.</given-names></name><name xml:lang="ru"><surname>Королева</surname><given-names>С. K.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bobrova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Боброва</surname><given-names>Н. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khaspekov</surname><given-names>Leonid G.</given-names></name><name xml:lang="ru"><surname>Хаспеков</surname><given-names>Леонид Георгиевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>khaspekleon@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Neurology, Russian Academy of Medical Sciences</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Medical Sciences</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Russian State Medical University</institution></aff><aff><institution xml:lang="ru">Российский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2007-06-14" publication-format="electronic"><day>14</day><month>06</month><year>2007</year></pub-date><volume>1</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>17</fpage><lpage>21</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 ©; 2007, Frumkina L.E., Bobrov M.Y., Lyzhin A.A., Andrianova E.L., Koroleva S.K., Bobrova N.A., Khaspekov L.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2007, Frumkina L.E., Bobrov M.Y., Lyzhin A.A., Andrianova E.L., Koroleva S.K., Bobrova N.A., Khaspekov L.G.</copyright-statement><copyright-year>2007</copyright-year><copyright-holder xml:lang="en">Frumkina L.E., Bobrov M.Y., Lyzhin A.A., Andrianova E.L., Koroleva S.K., Bobrova N.A., Khaspekov L.G.</copyright-holder><copyright-holder xml:lang="ru">Frumkina L.E., Bobrov M.Y., Lyzhin A.A., Andrianova E.L., Koroleva S.K., Bobrova N.A., Khaspekov L.G.</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/437">https://annaly-nevrologii.com/pathID/article/view/437</self-uri><abstract xml:lang="en"><p>Endogenous cannabinoid system plays an important physiological role in brain functioning, being related to regulation of neuromediator processes and mechanisms of neuroplasticity. Cannabinoid receptors of type 1 (CB1) represent one of the key elements of this system and convenient object for various experimental effects. We showed plastic reorganization of synapses in hippocampal CA1 stratum radiatum in vitro resulted from pharmacological blockade of CB1. The ultrastructural features of this reorganization are the formation of numerous perforated contacts with elongated synaptic membranes of modified configuration, spatial synaptic rearrangement, and the appearance of atypical synaptic connections. The obtained results suggest that involvement of CB1 in modulation of synaptic transmission is one of the mechanisms which ensure the stable morphofunctional state of synapse and promote its integrity in disturbances of neurotransmission regulation.</p></abstract><trans-abstract xml:lang="ru"><p>Эндогенная каннабиноидная система играет важную физиологическую роль в работе головного мозга, имея прямое отношение к регуляции нейромедиаторных процессов и механизмам нейропластичности. Одним из ключевых звеньев этой системы и удобным объектом для различных экспериментальных воздействий являются каннабиноидные рецепторы 1го типа (КР1). Нами показаны пластические перестройки синапсов, происходящие в радиальном слое поля СА1 гиппокампа in vitro при фармакологической блокаде КР1. К ультраструктурным признакам этих перестроек отнесены формирование многочисленных перфорированных контактов с удлиненными синаптическими мембранами измененной конфигурации, пространственная реорганизация синапсов, появление атипичных синаптических связей. Полученные данные свидетельствуют о том, что участие КР1 в модуляции синаптической передачи является одним из механизмов, обеспечивающих стабильное морфофункциональное состояние синапса и способствующих его сохранению при нарушениях регуляции нейромедиаторных процессов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hippocampus</kwd><kwd>tissue culture</kwd><kwd>cannabinoid receptors</kwd><kwd>synaptic regulation</kwd><kwd>plasticity</kwd><kwd>glutamate</kwd><kwd>neurotoxicity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гиппокамп</kwd><kwd>культура ткани</kwd><kwd>каннабиноидные рецепторы</kwd><kwd>синаптическая регуляция</kwd><kwd>пластичность</kwd><kwd>глутамат</kwd><kwd>нейроцитотоксичность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Хаспеков Л.Г., Бобров М.Ю. Эндогенная каннабиноидная система и ее защитная роль при ишемическом и цитотоксическом повреждении нейронов головного мозга. 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