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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10346</article-id><article-id pub-id-type="doi">10.32607/20758251-2018-10-2-71-78</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Soluble Guanylate Cyclase As the Key Enzyme in the Modulating Effect of NO on Metabotropic Glutamate Receptors</article-title><trans-title-group xml:lang="ru"><trans-title>Растворимая гуанилатциклаза как ключевой фермент в модулирующем влиянии NO на метаботропные глутаматные рецепторы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ryzhova</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Рыжова</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ireneryzhova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nozdrachev</surname><given-names>A. D.</given-names></name><name xml:lang="ru"><surname>Ноздрачев</surname><given-names>А. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ireneryzhova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tobias</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Тобиас</surname><given-names>Т. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ireneryzhova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vershinina</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Вершинина</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ireneryzhova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Pavlov Institute of Physiology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт физиологии им. И.П. Павлова РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2018</year></pub-date><volume>10</volume><issue>2</issue><issue-title xml:lang="en">VOL 10, NO2 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 10, №2 (2018)</issue-title><fpage>71</fpage><lpage>78</lpage><history><date date-type="received" iso-8601-date="2020-01-17"><day>17</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Ryzhova I.V., Nozdrachev A.D., Tobias T.V., Vershinina E.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Рыжова И.В., Ноздрачев А.Д., Тобиас Т.В., Вершинина Е.А.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Ryzhova I.V., Nozdrachev A.D., Tobias T.V., Vershinina E.A.</copyright-holder><copyright-holder xml:lang="ru">Рыжова И.В., Ноздрачев А.Д., Тобиас Т.В., Вершинина Е.А.</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://actanaturae.ru/2075-8251/article/view/10346">https://actanaturae.ru/2075-8251/article/view/10346</self-uri><abstract xml:lang="en"><p>The synaptic plasticity of the afferent synapse of the vestibular apparatus is defined by the dynamic interaction of ionotropic and metabotropic glutamate receptors and the modulators of synaptic transmission. It was shown that nitric oxide modulates iGluR responses. In this paper, the effect of NO on the function of the afferent synapse mGluR was investigated. Inhibitor of nitric oxide synthase lowered the level of background activity but increased the amplitude of the responses of groups I and II mGluR agonist ACPD. Donor NO SNAP increased the level of background activity. Short-term perfusion of the synaptic region with low concentrations of SNAP led to a decrease in the amplitude of the answers of mGluR agonists ACPD and DHPG. The inhibitory effect of the NO donor was eliminated under blockade of soluble guanylate cyclase with a specific inhibitor ODQ. A prolonged application of NO did not cause a statistically significant change in the amplitude of the ACPD response. However, SNAP at concentrations of 10 and 100 μM increased the amplitude of the mGluR agonist responses 30 and 15 minutes, respectively, after termination of the NO donor exposure. The obtained data show the multidirectional effect of NO on the function of mGluR and testify to the existence of a complex modulating mechanism of the afferent flow from vestibular organs to the central nervous system.</p></abstract><trans-abstract xml:lang="ru"><p>Синаптическая пластичность афферентного синапса вестибулярного аппарата определяется динамичным взаимодействием ионотропных и метаботропных глутаматных рецепторов и модуляторов синаптической передачи. Показано, что оксид азота модулирует ответы iGluR. В настоящей работе исследовано влияние NO на функцию mGluR афферентного синапса. Ингибитор синтазы оксида азота понижал уровень фоновой активности, но увеличивал амплитуду ответа агониста mGluR групп I и II - ACPD. Донор NO SNAP увеличивал уровень фоновой активности. Кратковременная перфузия синаптической области низкими концентрациями SNAP приводила к уменьшению амплитуды ответов агонистов mGluR ACPD и DHPG. Ингибирующее влияние донора NO устранялось в условиях блокады растворимой гуанилатциклазы специфическим ингибитором ODQ. Длительная аппликация NO не вызывала статистически значимого изменения амплитуды ответа ACPD. Однако SNAP в концентрациях 10 и 100 мкМ увеличивал амплитуду ответов агониста mGluR через 30 и 15 мин соответственно после окончания воздействия донора NO. Полученные данные показывают разнонаправленное влияние NO на функцию mGluR и свидетельствуют о существовании сложного механизма, регулирующего афферентный поток от вестибулярных органов в центральную нервную систему.</p></trans-abstract><kwd-group xml:lang="en"><kwd>nitric oxide</kwd><kwd>metabotropic glutamate receptors</kwd><kwd>vestibular apparatus</kwd><kwd>soluble guanylate cyclase</kwd><kwd>synaptic plasticity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вестибулярный аппарат</kwd><kwd>гуанилатциклаза</kwd><kwd>метаботропные глутаматные рецепторы</kwd><kwd>оксид азота</kwd><kwd>синаптическая пластичность</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This study was supported by the Russian Foundation for Basic Research (grant No. 14-04-00409).</funding-statement><funding-statement xml:lang="ru">Работа выполнена при поддержке РФФИ (грант № 14-04-00409).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Flores A., Leyn-Olea M., Vega R., Soto E. // Neurosci. 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