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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">Morphology</journal-id><journal-title-group><journal-title xml:lang="en">Morphology</journal-title><trans-title-group xml:lang="ru"><trans-title>Морфология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1026-3543</issn><issn publication-format="electronic">2949-2556</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">101842</article-id><article-id pub-id-type="doi">10.17816/morph.101842</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>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">CHANGES OF THE IMMUNOHISTOCHEMICAL CHARACTERISTICS OF NEURONS OF THE MIDDLE GROUP OF THE HYPOTHALAMIC NUCLEI DURING AGING</article-title><trans-title-group xml:lang="ru"><trans-title>ИЗМЕНЕНИЯ ИММУНОГИСТОХИМИЧЕСКИХ ХАРАКТЕРИСТИК НЕЙРОНОВ НЕКОТОРЫХ ЯДЕР ГИПОТАЛАМУСА ПРИ СТАРЕНИИ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Porseva</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Порсева</surname><given-names>Валентина Вячеславовна</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Pathophysiology</p></bio><bio xml:lang="ru"><p>кафедра патологической физиологии</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Korzina</surname><given-names>M. B.</given-names></name><name xml:lang="ru"><surname>Корзина</surname><given-names>Марина Борисовна</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Normal Physiology</p></bio><bio xml:lang="ru"><p>кафедра нормальной физиологии с биофизикой</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Spirichev</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Спиричев</surname><given-names>Андрей Андреевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Normal Physiology</p></bio><bio xml:lang="ru"><p>кафедра нормальной физиологии с биофизикой</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vyshnyakova</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Вишнякова</surname><given-names>Полина Александровна</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Normal Physiology</p></bio><bio xml:lang="ru"><p>кафедра нормальной физиологии с биофизикой</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Aryaeva</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Аряева</surname><given-names>Дарья Андреевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Normal Physiology</p></bio><bio xml:lang="ru"><p>кафедра нормальной физиологии с биофизикой</p></bio><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>Александр Данилович</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of General Physiology</p></bio><bio xml:lang="ru"><p>кафедра общей физиологии</p></bio><email>a.d.nozdrachev@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Masliukov</surname><given-names>P. M.</given-names></name><name xml:lang="ru"><surname>Маслюков</surname><given-names>Петр Михайлович</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Normal Physiology</p></bio><bio xml:lang="ru"><p>кафедра нормальной физиологии с биофизикой</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">Ярославский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">St. Petersburg State University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2019</year></pub-date><volume>156</volume><issue>5</issue><issue-title xml:lang="en">VOL 156, NO (2019)</issue-title><issue-title xml:lang="ru">ТОМ 156, № (2019)</issue-title><fpage>39</fpage><lpage>43</lpage><history><date date-type="received" iso-8601-date="2022-02-27"><day>27</day><month>02</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Porseva V.V., Korzina M.B., Spirichev A.A., Vyshnyakova P.A., Aryaeva D.A., Nozdrachev A.D., Masliukov P.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Порсева В.В., Корзина М.Б., Спиричев А.А., Вишнякова П.А., Аряева Д.А., Ноздрачев А.Д., Маслюков П.М.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Porseva V.V., Korzina M.B., Spirichev A.A., Vyshnyakova P.A., Aryaeva D.A., Nozdrachev A.D., Masliukov P.M.</copyright-holder><copyright-holder xml:lang="ru">Порсева В.В., Корзина М.Б., Спиричев А.А., Вишнякова П.А., Аряева Д.А., Ноздрачев А.Д., Маслюков П.М.</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-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://j-morphology.com/1026-3543/article/view/101842">https://j-morphology.com/1026-3543/article/view/101842</self-uri><abstract xml:lang="en"><p>The aim of the study - to identify differences in the immunohistochemical characteristics of the neurons of the arcuate (ARС), ventromedial (VMH) and dorsomedial (DMH) hypothalamus between young and old rats. Material and methods. The work was performed on male Wistar rats aged 3-4 months and 2-2,5 years using immunohistochemical methods. Results. In DMH, the percentage of calbindin (CB)immunoreactive (IR) of neurons is significantly reduced, and the percentage of calretinin (CR)-IR of neurons increases in DMH and VMH during aging. In old animals, the number of neuronal nitric oxide synthase (nNOS)-IR neurons and the degree of immunofluorescence to nNOS increased in all studied nuclei. In old rats, there is an increase in the density of neuropeptide Y-IR fibers in the VMH and a decrease in the DMH. Conclusions. The neurochemical composition of the nuclei of the middle group (mainly DMH and VMH) of the hypothalamus changes during aging.</p></abstract><trans-abstract xml:lang="ru"><p>Цель исследования - выявление изменений иммуногистохимических характеристик нейронов дугообразного (ДЯ), вентромедиального (ВМЯ) и дорсомедиального (ДМЯ) ядер гипоталамуса у крыс при старении. Материал и методы. Работа выполнена на крысах-самцах линии Вистар в возрасте 3-4 мес (5 особей) и 12-18 мес (5 особей) с использованием иммуногистохимических методов. Результаты. При старении в ДМЯ относительное содержание кальбиндин-иммунопозитивных нейронов уменьшается, а кальретинин-иммунопозитивных нейронов в ДМЯ и ВМЯ увеличивается. У старых животных количество нейронов, иммунопозитивных к нейрональной синтазе оксида азота, и степень иммунофлюоресценции к ней увеличивались во всех исследуемых ядрах. У старых крыс наблюдается увеличение плотности нейропептид Y-иммунопозитивных волокон в ВМЯ и снижение в ДМЯ. Выводы. При старении нейрохимический состав нейронов изменяется преимущественно в области вентромедиального и дорсомедиального ядер гипоталамуса.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hypothalamus</kwd><kwd>middle group of nuclei</kwd><kwd>aging</kwd><kwd>immunohistochemistry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гипоталамус</kwd><kwd>вентромедиальное ядро</kwd><kwd>дорсомедиальное ядро</kwd><kwd>нейроны</kwd><kwd>старение</kwd><kwd>иммуногистохимия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Маслюков П. М., Ноздрачёв А. Д., Емануйлов А. И. Возрастные особенности экспрессии кальций-связывающих белков в нейронах ганглиев автономной нервной системы // Успехи геронтол. 2016. Т. 29, № 2. С. 247-253.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Ahn J. H., Hong S., Park J. H., Kim I. H., Cho J. H., Lee T. K., Lee J. C., Chen B. H., Shin B. N., Bae E. J., Jeon Y. H., Kim Y. M., Won M. 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