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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vavilov</journal-id><journal-title-group><journal-title xml:lang="ru">Вавиловский журнал генетики и селекции</journal-title><trans-title-group xml:lang="en"><trans-title>Vavilov Journal of Genetics and Breeding</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-3259</issn><publisher><publisher-name>Institute of Cytology and Genetics of Siberian Branch of the RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/VJ19.514</article-id><article-id custom-type="elpub" pub-id-type="custom">vavilov-2139</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="ru"><subject>РЕПРОДУКТИВНЫЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSIOLOGICAL GENETICS</subject></subj-group></article-categories><title-group><article-title>Влияние неонатального введения дексаметазона на когнитивные способности взрослых самцов мышей и экспрессию генов в гипоталамусе</article-title><trans-title-group xml:lang="en"><trans-title>Effect of neonatal dexamethasone treatment on cognitive abilities of adult male mice and gene expression in the hypothalamus</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5602-5149</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бондарь</surname><given-names>Н. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Bondar</surname><given-names>N. P.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>Novosibirsk</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/0000-0002-2932-0804</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Решетников</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Reshetnikov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурдеева</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Burdeeva</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Меркулова</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Merkulova</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук; &#13;
Новосибирский национальный исследовательский государственный университет<country>Россия</country></aff><aff xml:lang="en">Institute of Cytology and Genetics, SB RAS; &#13;
Novosibirsk State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Institute of Cytology and Genetics, SB RAS<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Новосибирская государственная медицинская академия<country>Россия</country></aff><aff xml:lang="en">Novosibirsk State Medical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>07</day><month>07</month><year>2019</year></pub-date><volume>23</volume><issue>4</issue><fpage>456</fpage><lpage>464</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бондарь Н.П., Решетников В.В., Бурдеева К.В., Меркулова Т.И., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Бондарь Н.П., Решетников В.В., Бурдеева К.В., Меркулова Т.И.</copyright-holder><copyright-holder xml:lang="en">Bondar N.P., Reshetnikov V.V., Burdeeva K.V., Merkulova T.I.</copyright-holder><license 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://vavilov.elpub.ru/jour/article/view/2139">https://vavilov.elpub.ru/jour/article/view/2139</self-uri><abstract><p>Ранний постнатальный период является критическим для развития нервной системы. Стресс в этот период вызывает негативные отдаленные последствия, которые отражаются как на поведенческом, так и на молекулярном уровне. В нашем исследовании для моделирования повышенного уровня глюкокортикоидов, характерного для стрессирующего воздействия в раннем возрасте, мы использовали введение дексаметазона, агониста глюкокортикоидных рецепторов, в понижающихся дозах в первые три дня жизни (0.5, 0.3, 0.1 мг/кг, п/к). У взрослых самцов мышей с неонатальным введением дексаметазона было найдено увеличение относительного веса надпочечников и снижение веса тела, при этом базальный уровень кортикостерона в крови не изменялся. Введение дексаметазона в раннем возрасте оказало негативное воздействие на скорость обучения и формирование пространственной памяти в водном лабиринте Морриса у взрослых животных. Мы проанализировали влияние повышенного уровня глюкокортикоидов в раннем возрасте на экспрессию генов Crh, Avp, Gr, Mr, участвующих в регуляции гипоталамо-гипофизарно-надпочечниковой системы (ГГНС), в гипоталамусе взрослых животных. Уровень экспрессии гена минералокортикоидного рецептора (Mr) был снижен достоверно, а гена глюкокортикоидного рецептора (Gr) – на уровне тенденции (р = 0.058) у самцов мышей с неонатальным введением дексаметазона по сравнению с введением физиологического раствора. Уровень экспрессии гена, кодирующего кортикотропин-рилизинг гормон (Crh), не изменялся, тогда как экспрессия гена вазопрессина (Avp) повышалась под влиянием неонатального введения дексаметазона. Полученные данные демонстрируют возможное нарушение механизмов негативной регуляции ГГНС на уровне гипоталамуса, в которую вовлечены глюкокортикоидный и минералокортикоидный рецепторы. Нарушение функции ГГНС при активации глюкокортикоидной системы в раннем возрасте может быть причиной развития когнитивных нарушений у взрослых животных. </p></abstract><trans-abstract xml:lang="en"><p>The early postnatal period is critical for the development of the nervous system. Stress during this period causes negative long-term effects, which are manifested at both behavioral and molecular levels. To simulate the elevated glucocorticoid levels characteristic of early-life stress, in our study we used the administration of dexamethasone, an agonist of glucocorticoid receptors, at decreasing doses at the first three days of life (0.5, 0.3, 0.1 mg/kg, s.c.). In adult male mice with neonatal dexamethasone treatment, an increase in the relative weight of the adrenal glands and a decrease in body weight were observed, while the basal level of corticosterone remained unchanged. Dexamethasone treatment in early life had a negative impact on the learning and spatial memory of adult mice in the Morris water maze. We analyzed the effect of elevated glucocorticoid levels in early life on the expression of the Crh, Avp, Gr, and Mr genes involved in the regulation of the HPA axis in the hypothalami of adult mice. The expression level of the mineralocorticoid receptor gene (Mr) was significantly downregulated, and the glucocorticoid receptor gene (Gr) showed a tendency towards decreased expression (p = 0.058) in male mice neonatally treated with dexamethasone, as compared with saline administration. The expression level of the Crh gene encoding corticotropin-releasing hormone was unchanged, while the expression of the vasopressin gene (Avp) was increased in response to neonatal administration of dexamethasone. The obtained results demonstrate a disruption of negative feedback regulation of the HPA axis, which involves glucocorticoid and mineralocorticoid receptors, at the level of the hypothalamus. Malfunction of the HPA axis as a result of activation of the glucocorticoid system in early life may cause the development of cognitive impairment in the adult mice.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>неонатальное введение дексаметазона</kwd><kwd>ГГНС</kwd><kwd>глюкокортикоидный рецептор</kwd><kwd>минералокортикоидный рецептор</kwd><kwd>пространственная память</kwd><kwd>экспрессия генов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>neonatal dexamethasone treatment</kwd><kwd>HPA</kwd><kwd>glucocorticoid receptor</kwd><kwd>mineralocorticoid receptor</kwd><kwd>spatial memory</kwd><kwd>gene expression</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>This work was supported by the Russian Science Foundation as Project 16-15-10131.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Aguilera G., Rabadan-Diehl C. 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