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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">10497</article-id><article-id pub-id-type="doi">10.32607/20758251-2015-7-3-108-112</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">The Novel Dipeptide Translocator Protein Ligand, Referred to As GD-23, Exerts Anxiolytic and Nootropic Activities</article-title><trans-title-group xml:lang="ru"><trans-title>Дипептидный лиганд транслокаторного белка ГД-23 проявляет анксиолитическую и ноотропную активности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Povarnina</surname><given-names>P. Yu.</given-names></name><name xml:lang="ru"><surname>Поварнина</surname><given-names>П. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>povarnina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yarkov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Ярков</surname><given-names>С. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>povarnina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gudasheva</surname><given-names>T. A.</given-names></name><name xml:lang="ru"><surname>Гудашева</surname><given-names>T. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>povarnina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yarkova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Яркова</surname><given-names>M. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>povarnina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Seredenin</surname><given-names>S. B.</given-names></name><name xml:lang="ru"><surname>Середенин</surname><given-names>С. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>povarnina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">V.V. Zakusov Research Institute of Pharmacology of RAMS</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт фармакологии им. В.В. Закусова РАМН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2015</year></pub-date><volume>7</volume><issue>3</issue><issue-title xml:lang="en">VOL 7, NO3 (2015)</issue-title><issue-title xml:lang="ru">ТОМ 7, №3 (2015)</issue-title><fpage>108</fpage><lpage>112</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 ©; 2015, Povarnina P.Y., Yarkov S.A., Gudasheva T.A., Yarkova M.A., Seredenin S.B.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, Поварнина П.Ю., Ярков С.A., Гудашева T.A., Яркова M.A., Середенин С.Б.</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Povarnina P.Y., Yarkov S.A., Gudasheva T.A., Yarkova M.A., Seredenin S.B.</copyright-holder><copyright-holder xml:lang="ru">Поварнина П.Ю., Ярков С.A., Гудашева T.A., Яркова M.A., Середенин С.Б.</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/10497">https://actanaturae.ru/2075-8251/article/view/10497</self-uri><abstract xml:lang="en"><p>The translocator protein (TSPO) promotes the translocation of cholesterol to the inner mitochondrial membrane and mediates steroid formation. In this study, we first report on a biological evaluation of the dipeptide GD-23 (N-carbobenzoxy-L tryptophanyl-L isoleucine amide), a structural analogue of Alpidem, the principal TSPO ligand. We show that GD-23 in a dose range of 0.05 to 0.5 mg/kg (i.p.) exhibits anxiolytic activity in the elevated plus maze test and nootropic activity in the object recognition test in scopolamine-induced amnesia in rodents. It was shown that GD-23 did not affect spontaneous locomotor activity, holding promise as a nonsedative anxiolytic agent. The anxiolytic and nootropic activities of GD-23 were abrogated by the TSPO specific ligand PK11195, which thus suggests a role for TSPO in mediating the pharmacological activity of GD-23.</p></abstract><trans-abstract xml:lang="ru"><p>TSPO - белок-переносчик холестерина в митохондриальный матрикс (транслокаторный белок), участвует в биосинтезе нейростероидов. В НИИ фармакологии им. В.В. Закусова сконструирован топологический аналог лиганда TSPO Алпидема - дипептид ГД-23 (амид N-карбобензокси-L-триптофанил-L-изолейцина). Установлено, что ГД-23 в дозах 0.05-0.5 мг/кг (в/б) проявляет анксиолитическую активность в приподнятом крестообразном лабиринте и ноотропную активность в тесте распознавания нового объекта в условиях скополаминовой амнезии у грызунов. Показано, что ГД-23 не влияет на спонтанную двигательную активность, что исключает его седативное действие. Анксиолитическая и ноотропная активности ГД-23 блокируются антагонистом TSPO PK11195, что подтверждает участие TSPO в фармакологических эффектах дипептида.</p></trans-abstract><kwd-group xml:lang="en"><kwd>translocator protein</kwd><kwd>dipeptide</kwd><kwd>GD-23</kwd><kwd>anxiolytic activity</kwd><kwd>nootropic activity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>транслокаторный белок</kwd><kwd>дипептид</kwd><kwd>ГД-23</kwd><kwd>анксиолитическая активность</kwd><kwd>ноотропная активность</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was financially supported by the Fundamental Research Program of the Presidium of the RAS “Fundamental research on biomedical technologies 2014,” project “Construction, synthesis and evaluation of pharmacological activity of novel mitochondrial translocator protein (TSPO) ligands.”</funding-statement><funding-statement xml:lang="ru">Работа выполнена при поддержке программы фундаментальных исследований Президиума РАН «Фундаментальные исследования для разработки биомедицинских технологий» на 2014 год, проект «Конструирование, синтез и выявление фармакологических свойств оригинальных лигандов митохондриального транслокаторного белка TSPO».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Nothdurfter C., Baghai T.C., Schüle C., Rupprecht R. // Eur. 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