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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">rpmj</journal-id><journal-title-group><journal-title xml:lang="ru">Research'n Practical Medicine Journal</journal-title><trans-title-group xml:lang="en"><trans-title>Research and Practical Medicine Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2410-1893</issn><publisher><publisher-name>"QUASAR", LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17709/2410-1893-2025-12-2-6</article-id><article-id custom-type="edn" pub-id-type="custom">AIUZFX</article-id><article-id custom-type="elpub" pub-id-type="custom">rpmj-1120</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>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>Изменение концентрации мелатонина и эндогенных белков, регулирующих метаболизм углеводов и липидов, у крыс в условиях светового десинхроноза при фармакологической коррекции экстрактами пептидной природы из эпифиза и гипофиза Северного оленя (Rangifer tarandus)</article-title><trans-title-group xml:lang="en"><trans-title>Changes in the concentration of melatonin and endogenous proteins regulating carbohydrate and lipid metabolism in rats under conditions of light desynchronosis with pharmacological correction by peptide extracts from the pineal gland and pituitary gland of the reindeer (Rangifer tarandus)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-0235-4142</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарабанов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharabanov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Шарабанов Андрей Вячеславович – главный технолог ФГБУН «Научный центр биомедицинских технологий» ФМБА России, п. Светлые горы, Московская обл., Российская Федерация</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0009-0000-0235-4142" ext-link-type="uri">https://orcid.org/0009-0000-0235-4142</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=1021946" ext-link-type="uri">5446-2375</ext-link>, Author ID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=1021946" ext-link-type="uri">1021946</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Andrey V. Sharabanov – Chief Technologist, Scientific Center of Biomedical Technologies, Svetlye Gory Village, Moscow Region, Russian Federation</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0009-0000-0235-4142" ext-link-type="uri">https://orcid.org/0009-0000-0235-4142</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=1021946" ext-link-type="uri">5446-2375</ext-link>, Author ID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=1021946" ext-link-type="uri">1021946</ext-link></p></bio><email xlink:type="simple">avsharabanov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3827-4579</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Батоцыренова</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Batotsyrenova</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Батоцыренова Екатерина Геннадьевна – д.б.н., доцент, ведущий научный сотрудник ФГБУ «Научно-клинический центр токсикологии им. акад. С. Н. Голикова» ФМБА России, г. Санкт-Петербург, Российская Федерация; заведующая кафедрой общей и медицинской химии им. проф. В. В. Хорунжего ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0003-3827-4579" ext-link-type="uri">https://orcid.org/0000-0003-3827-4579</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=270128" ext-link-type="uri">5800-7966</ext-link>, Author ID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=270128" ext-link-type="uri">270128</ext-link></p><p>Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=57112720200" ext-link-type="uri">57112720200</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Ekaterina G. Batotsyrenova – Dr. Sci. (Biology), Associate Professor, Leading Researcher, Golikov Research Center of Toxicology, Saint Petersburg, Russian Federation; Head of department of General and Medical Chemistry named after prof. V.V. Khorunzhy, St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0003-3827-4579" ext-link-type="uri">https://orcid.org/0000-0003-3827-4579</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=270128" ext-link-type="uri">5800-7966</ext-link>, Author ID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=270128" ext-link-type="uri">270128</ext-link></p><p>Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=57112720200" ext-link-type="uri">57112720200</ext-link></p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крецер</surname><given-names>Т. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kretser</surname><given-names>T. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Крецер Татьяна Юрьевна – к.х.н., доцент кафедры биологической химии ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=838303" ext-link-type="uri">4456-3891</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=838303" ext-link-type="uri">838303</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Tatyana Yu. Kretser – Cand. Sci. (Chemistry), Associate Professor of the Department of Biological Chemistry, St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=838303" ext-link-type="uri">4456-3891</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=838303" ext-link-type="uri">838303</ext-link></p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Красникова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasnikova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Красникова Елена Николаевна – к.х.н., доцент кафедры биологической химии ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=713209" ext-link-type="uri">3220-2630</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=713209" ext-link-type="uri">713209</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Elena N. Krasnikova – Cand. Sci. (Chemistry), Associate Professor of the Department of Biological Chemistry, St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=713209" ext-link-type="uri">3220-2630</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=713209" ext-link-type="uri">713209</ext-link></p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7892-0048</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кашуро</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kashuro</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Кашуро Вадим Анатольевич – д.м.н., доцент, заведующий кафедрой биологической химии ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация; профессор кафедры анатомии и физиологии человека и животных ФГБОУ ВО «Российский государственный педагогический университет им. А.И. Герцена», профессор кафедры ФГБОУ ВО «Санкт-Петербургский государственный университет»</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-7892-0048" ext-link-type="uri">https://orcid.org/0000-0002-7892-0048</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=340701" ext-link-type="uri">3821-8062</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=340701" ext-link-type="uri">340701</ext-link></p><p>Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=36021187200" ext-link-type="uri">36021187200</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Vadim A. Kashuro – Dr. Sci. (Medicine), Associate Professor, Head of the Department of Biological Chemistry St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation; Professor of the Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical University of Russia, Saint Petersburg, Russian Federation; Professor of the Department, Saint Petersburg State University, Saint Petersburg, Russian Federation</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-7892-0048" ext-link-type="uri">https://orcid.org/0000-0002-7892-0048</ext-link></p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=340701" ext-link-type="uri">3821-8062</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=340701" ext-link-type="uri">340701</ext-link></p><p>Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=36021187200" ext-link-type="uri">36021187200</ext-link></p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сраго</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Srago</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Сраго Игорь Александрович – к.х.н., доцент кафедры общей и медицинской химии им. проф. В. В. Хорунжего ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=715040" ext-link-type="uri">6345-1745</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=715040" ext-link-type="uri">715040</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Igor A. Srago – Cand. Sci. (Chemistry), Associate Professor of the Department of General and Medical Chemistry named after prof. V.V. Khorunzhy, St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=715040" ext-link-type="uri">6345-1745</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=715040" ext-link-type="uri">715040</ext-link></p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Голинец</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Golinets</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Голинец Елена Михайловна – старший преподаватель кафедры общей и медицинской химии им. проф. В. В. Хорунжего ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России, г. Санкт-Петербург, Российская Федерация</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=814828" ext-link-type="uri">7038-8638</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=814828" ext-link-type="uri">814828</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Elena M. Golinets – Senior Lecturer of the Department of General and Medical Chemistry named after prof. V.V. Khorunzhy, St. Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=814828" ext-link-type="uri">7038-8638</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_profile.asp?id=814828" ext-link-type="uri">814828</ext-link></p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хвостов</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khvostov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Хвостов Даниил Владиславович – к.техн.н., научный сотрудник лаборатории молекулярной биологии и биоинформатики ФГБУН «Научный центр биомедицинских технологий» ФМБА России, п. Светлые горы, Московская обл., Российская Федерация; научный сотрудник ФГБНУ «Федеральный научный центр пищевых систем им. В. М. Горбатова» РАН, г. Москва, Российская Федерация</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=990646" ext-link-type="uri">7537-7479</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=990646" ext-link-type="uri">990646</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Daniil V. Khvostov – Cand. Sci. (Technical Sciences), Research Associate Scientific Center of Laboratory of Molecular Biology and Bioinformatics, Scientific Center of Biomedical Technologies, Svetlye Gory Village, Moscow Region, Russian Federation; Research Associate, V.M. Gorbatov Federal Research Center for Food Systems,  Moscow, Russian Federation</p><p>eLibrary SPIN: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=990646" ext-link-type="uri">7537-7479</ext-link>, AuthorID: <ext-link xlink:href="https://www.elibrary.ru/author_items.asp?authorid=990646" ext-link-type="uri">990646</ext-link></p></bio><xref ref-type="aff" rid="aff-6"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научный центр биомедицинских технологий ФМБА России &lt;p&gt;&#13;
п. Светлые горы, Московская обл., Российская Федерация</institution></aff><aff xml:lang="en"><institution>Scientific Center of Biomedical Technologies &lt;p&gt;&#13;
Svetlye Gory Village, Moscow Region, Russian Federation</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-клинический центр токсикологии им. акад. С. Н. Голикова ФМБА России; &#13;
Санкт-Петербургский государственный педиатрический медицинский университет Минздрава России &lt;p&gt;&#13;
г. Санкт-Петербург, Российская Федерация</institution></aff><aff xml:lang="en"><institution>Golikov Research Center of Toxicology; &lt;p&gt;&#13;
St. Petersburg State Pediatric Medical University &lt;p&gt;&#13;
Saint Petersburg, Russian Federation</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный педиатрический медицинский университет Минздрава России &lt;p&gt;&#13;
г. Санкт-Петербург, Российская Федерация</institution></aff><aff xml:lang="en"><institution>St. Petersburg State Pediatric Medical University  &lt;p&gt;&#13;
Saint Petersburg, Russian Federation</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный педиатрический медицинский университет Минздрава России; &lt;p&gt;&#13;
Российский государственный педагогический университет им. А. И. Герцена; &lt;p&gt;&#13;
Санкт-Петербургский государственный университет &lt;p&gt;&#13;
г. Санкт-Петербург, Российская Федерация</institution></aff><aff xml:lang="en"><institution>St. Petersburg State Pediatric Medical University;  &lt;p&gt;&#13;
Herzen State Pedagogical University of Russia;  &lt;p&gt;&#13;
Saint Petersburg State University  &lt;p&gt;&#13;
Saint Petersburg, Russian Federation</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный педиатрический медицинский университет Минздрава России &lt;p&gt;&#13;
г. Санкт-Петербург, Российская Федерация</institution></aff><aff xml:lang="en"><institution>St. Petersburg State Pediatric Medical University &lt;p&gt;&#13;
Saint Petersburg, Russian Federation</institution></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Научный центр биомедицинских технологий ФМБА России;  &lt;p&gt;&#13;
п. Светлые горы, Московская обл., Российская Федерация&#13;
Федеральный научный центр пищевых систем им. В. М. Горбатова РАН &lt;p&gt;&#13;
г. Москва, Российская Федерация</institution></aff><aff xml:lang="en"><institution>Scientific Center of Biomedical Technologies; &lt;p&gt;&#13;
V.M. Gorbatov Federal Research Center for Food Systems &lt;p&gt;&#13;
Saint Petersburg, Russian Federation</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2025</year></pub-date><volume>12</volume><issue>2</issue><fpage>70</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шарабанов А.В., Батоцыренова Е.Г., Крецер Т.Ю., Красникова Е.Н., Кашуро В.А., Сраго И.А., Голинец Е.М., Хвостов Д.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шарабанов А.В., Батоцыренова Е.Г., Крецер Т.Ю., Красникова Е.Н., Кашуро В.А., Сраго И.А., Голинец Е.М., Хвостов Д.В.</copyright-holder><copyright-holder xml:lang="en">Sharabanov A.V., Batotsyrenova E.G., Kretser T.Y., Krasnikova E.N., Kashuro V.A., Srago I.A., Golinets E.M., Khvostov D.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://www.rpmj.ru/rpmj/article/view/1120">https://www.rpmj.ru/rpmj/article/view/1120</self-uri><abstract><p>Цель исследования. Изучение влияния последовательного высвобождения экстрактов пептидной природы (ЭПП) из эпифиза и гипофиза Северного оленя (Rangifer tarandus) на эндогенные регуляторные белки (гипоксией индицируемый фактор 1 альфа (HIF1α), рецептор, активируемый пероксисомным пролифератором гамма (PPARγ), растворимая фосфоенолпируваткарбоксикиназа 1 (ФЕППК)) и мелатонин в сыворотке крови самцов крыс в условиях экспериментального светового десинхроноза.Материалы и методы. Моделирование светового десинхроноза выполнялось на белых беспородных крысах-самцах возрастом 2 мес. и массой 180 ± 20 г в количестве 144 головы. Животные методом рандомизации были разделены на три основные группы: 1-я группа – контрольная, в которой моделировался режим обычного освещения (светодиодное освещение 500 лк день/ночь 12/12); 2-я группа содержалась в режиме постоянного освещения; 3-я группа содержалась в режиме постоянной темноты. Формирование светового десинхроноза осуществлялось в течение 30 дней. В течение первых 14 дней формирования светового десинхроноза крысам интраназально вводили исследуемые вещества. Через 30 дней после начала эксперимента крысы подвергались эвтаназии для забора биологического материала. Содержание HIF1α, PPARγ, ФЕППК и мелатонина в сыворотке крови лабораторных животных определяли методом иммуноферментного анализа (ИФА).Результаты. Применение ЭПП в двух дозах при нарушении светового режима снижало концентрацию HIF1α в сыворотке крови, что свидетельствует об улучшении утилизации кислорода в тканях экспериментальных животных. Исследуемые экстракты также вызвали резкое повышение концентрации в сыворотке крови транскрипционного фактора PPARγ, что способствует запуску процессов регуляции обмена липидов и углеводов в жировой ткани. Применение пептидных экстрактов в двух дозах выявило снижение активности ФЕППК при постоянном освещении. При постоянном освещении ЭПП в дозе 100 мкг/кг также способствует повышению концентрации мелатонина в сыворотке крови до уровня контрольной группы.Заключение. Исследование выявило хронобиотические эффекты ЭПП на концентрацию регуляторных белков и мелатонина в сыворотке крови самцов крыс в условиях светового десинхроноза. Также следует отметить, что данные эффекты отличаются от известных эффектов дельта-сон индуцирующего пептида, что может быть связано с разным механизмом молекулярного воздействия.</p></abstract><trans-abstract xml:lang="en"><p>Purpose of the study. To study the effect of sequential release of peptide extracts (PEE) from the pineal gland and pituitary gland of reindeer (Rangifer tarandus) on endogenous regulatory proteins (hypoxia-inducible factor 1 alpha (HIF1α), peroxisome proliferatoractivated receptor gamma (PPARγ), soluble phosphoenolpyruvate carboxykinase 1 (PEPCK) and melatonin in the blood serum of male rats under conditions of experimental light desynchronosis.Materials and methods. Modeling of light desynchronization was carried out on two-month laboratory white outbred male rats weighing 180 ± 20 g in the number of 144 individuals. The animals were divided by the method of randomization into three main groups: 1st group represented the control, in which the normal lighting regimen was modeled (LED lighting 500 lux day/night 12/12); the 2nd group was kept in the regimen of constant illumination; the third group was kept in a regimen of constant darkness. The formation of light desynchronization was carried out for 30 days. During the first 14 days of the formation of light desynchronosis, the rats were intranasally being administered with the test substances. After 30 days from the beginning of the experiment, the rats were euthanized for the collection of biological material. The blood serum HIF1α, PPARγ, PCK1 and melatonin levels of laboratory animals were analyzed by the enzyme immunoassay method (EIA).Results. The use of PEE in two doses during light deprivation has reduced the concentration of HIF1α in the blood serum, indicating improved oxygen utilization in the tissues of experimental animals. PEE in two doses has caused a sharp increase in the concentration of the transcription factor in blood serum PPARγ, which promotes the initiation of processes regulating the exchange of lipids and carbohydrates in adipose tissue. The application of peptide extracts in two doses has revealed a decrease in the activity of PCK1 under constant illumination. With constant exposure to PEE in doses 100 mg/kg, it promotes an increase in the concentration of melatonin in the blood serum, approximately equal to the level of the control group.Conclusion. The study revealed the chronobiotic effects of PEE on the concentration of regulatory proteins and melatonin in the blood serum of male rats in the conditions of light desynchronization. It should also be noted that these effects differ from the known effects of the delta-sleep inducing peptide, which may be due to a different mechanism of molecular action.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>экстракты пептидной природы</kwd><kwd>мелатонин</kwd><kwd>модифицированное действие</kwd><kwd>световой десинхроноз</kwd><kwd>биоактивные пептиды эпифиза и гипофиза</kwd><kwd>фармакологическая коррекция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>peptide extracts</kwd><kwd>melatonin</kwd><kwd>modified action</kwd><kwd>light desynchronosis</kwd><kwd>bioactive peptides of the pineal gland and pituitary gland</kwd><kwd>pharmacological correction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена при финансовой поддержке ЗАО «ФЕРМЕНТ», ФГБУ «Научно-клинический центр токсикологии им. акад. С. Н. 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