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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">sibmed</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский научный медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Сибирский научный медицинский журнал</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-2512</issn><issn pub-type="epub">2410-2520</issn><publisher><publisher-name>ИЦиГ СО РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/SSMJ20240609</article-id><article-id custom-type="elpub" pub-id-type="custom">sibmed-1835</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>МЕДИКО-БИОЛОГИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOMEDICINE</subject></subj-group></article-categories><title-group><article-title>Состояние нуклео-нуклеолярного аппарата кардиомиоцитов половозрелых самцов белых крыс, подвергнутых внутриутробной гипоксии и неонатальному введению неопиатных аналогов лей-энкефалина</article-title><trans-title-group xml:lang="en"><trans-title>The state of the nucleo-nucleolar apparatus of the mature albino rat males cardiomyocytes exposed to intrauterine hypoxia and neonatal administration of non-opiate analogues of leu-enkephalin</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6199-4278</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гусев</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gusev</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гусев Илья Алексеевич.</p><p>680000, Хабаровск, ул. Муравьева-Амурского, 35</p></bio><bio xml:lang="en"><p>Ilia A. Gusev.</p><p>680000, Khabarovsk, Muravyova-Amurskogo st., 35</p></bio><email xlink:type="simple">gusilia99@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-9751-804X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фоменко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fomenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фоменко Артем Витальевич.</p><p>680000, Хабаровск, ул. Муравьева-Амурского, 35</p></bio><bio xml:lang="en"><p>Artem V. Fomenko.</p><p>680000, Khabarovsk, Muravyova-Amurskogo st., 35</p></bio><email xlink:type="simple">artem_fomenko98@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-4351-7188</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сорочинская</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sorochinskaya</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сорочинская Ольга Игоревна.</p><p>680000, Хабаровск, ул. Муравьева-Амурского, 35</p></bio><bio xml:lang="en"><p>Ol’ga I. Sorochinskaya.</p><p>680000, Khabarovsk, Muravyova-Amurskogo st., 35</p></bio><email xlink:type="simple">lelya200147@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сазонова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Sazonova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сазонова Елена Николаевна - д.м.н., проф.</p><p>680000, Хабаровск, ул. Муравьева-Амурского, 35; 680022, Хабаровск, ул. Воронежская, 49, корп. 1</p></bio><bio xml:lang="en"><p>Elena N. Sazonova - doctor of medical sciences, professor.</p><p>680000, Khabarovsk, Muravyova-Amurskogo st., 35; 680022, Khabarovsk, Voronezhskaya st., 49, bld. 1</p></bio><email xlink:type="simple">sazen@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Дальневосточный государственный медицинский университет Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Far Eastern State Medical University of Minzdrav of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Дальневосточный государственный медицинский университет Минздрава России; Хабаровский филиал Дальневосточного научного центра физиологии и патологии дыхания – НИИ охраны материнства и детства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Far Eastern State Medical University of Minzdrav of Russia; Khabarovsk branch of the Far Eastern Scientific Center for Physiology and Pathology of Respiration – Research Institute for the Protection of Motherhood and Childhood</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2025</year></pub-date><volume>44</volume><issue>6</issue><fpage>97</fpage><lpage>104</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гусев И.А., Фоменко А.В., Сорочинская О.И., Сазонова Е.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Гусев И.А., Фоменко А.В., Сорочинская О.И., Сазонова Е.Н.</copyright-holder><copyright-holder xml:lang="en">Gusev I.A., Fomenko A.V., Sorochinskaya O.I., Sazonova E.N.</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://sibmed.elpub.ru/jour/article/view/1835">https://sibmed.elpub.ru/jour/article/view/1835</self-uri><abstract><p>Внутриутробная гипоксия (ВУГ) изменяет постнатальное развитие сердца и вносит вклад в индивидуальную предрасположенность к сердечно-сосудистым заболеваниям, в том числе путем нарушения белок-синтетической функции кардиомиоцитов (КМЦ). Неопиатные аналоги лей-энкефалина, пептиды НАЛЭ (Phe–D-Ala–Gly–Phe–Leu–Arg) и G (Phe–D-Ala–Gly–Phe–Leu–Gly), являются цитопротекторами с широким спектром биологической активности, которые улучшают состояние нуклео-нуклеолярного аппарата КМЦ в неонатальном возрасте после ВУГ. Цель исследования – проанализировать состояние нуклео-нуклеолярного аппарата КМЦ у половозрелых белых крыс, подвергнутых ВУГ и неонатальному введению неопиатных аналогов лей-энкефалина. Материал и методы. Потомство самок белых крыс Вистар, подвергнутых гипобарическому воздействию (15–19 день гестации, рО2 = 65 мм рт. ст., экспозиция 4 ч), получало со вторых по шестые сутки жизни внутрибрюшинно пептиды НАЛЭ и G в дозе 100 мкг/кг, а также НАЛЭ в сочетании с блокатором NO-синтазы L-NAME (50 мг/кг), после чего выводилось из эксперимента в половозрелом возрасте (60 суток). Животные контрольной группы и группы сравнения получали эквиобъемное количество физиологического раствора натрия хлорида. Проанализированы карио- и нуклеолометрические параметры КМЦ, а также количество ядрышек при окраске срезов сердца методом AgNOR. Результаты и их обсуждение. ВУГ индуцировала достоверное снижение количества ядрышек в КМЦ обоих желудочков, а также привела к нарушению карио- и нуклеолометрических показателей КМЦ половозрелых животных. Введение пептида НАЛЭ в дозе 100 мкг/кг в неонатальном периоде корректировало постгипоксические изменения нуклео-нуклеолярного аппарата. Неонатальное введение неселективного блокатора NO-синтазы (L-NAME, 50 мг/кг) устраняло выявленные эффекты НАЛЭ. Коррекция отсроченных постгипоксических изменений, сходная с действием пептида НАЛЭ, наблюдалась при неонатальном введении его безаргининового аналога, пептида G. Заключение. Кардиопротективное действие НАЛЭ частично опосредовано через L-аргинин – потенциальный донор оксида азота. Неопиатные аналоги лей-энкефалина – пептиды НАЛЭ и G – могут рассматриваться в качестве перспективных кардиопротективных средств с отсроченной активностью, предотвращающих отдаленные кардиальные последствия ВУГ.</p></abstract><trans-abstract xml:lang="en"><p>Intrauterine hypoxia (IUH) changes the postnatal heart development and contributes to the individual susceptibility to cardiovascular diseases, also by impairment of protein-synthetic function of cardiomyocytes (CMC). Non-opiate analogues of leu-enkephalin, peptides NALE (Phe–D-Ala–Gly–Phe–Leu–Arg) and G (Phe–D-Ala–Gly–Phe–Leu–Gly), cytoprotectors with the wide spectrum of biological activity, improve the state of the CMC nucleo-nucleolar apparatus in neonatal age after IUH. The aim of the study was to analyze the parameters of CMC nucleo-nucleolar apparatus in mature albino rats, exposed to IUH and to the neonatal administration of peptides-analogues of leu-enkephalin. Material and methods. The offspring of Wistar rat females, subjected to hypobaric exposure (15–19 days of gestation, pO2 = 65 mm. Hg, duration – 4 hours), received from day 2 to day 6 of life daily intraperitoneal injections of NALE and G peptides (100 µg/kg), as well as NALE in combination with non-selective NO synthase blocker L-NAME (50 mg/kg), after that they were withdrawn from the experiment in mature age (60 days). The animals of control group and the comparison group received an equal volume of isotonic sodium chloride solution. The karyo- and nucleolometric parameters of CMC, and also the CMC nucleoli number were analyzed in heart sections, stained by using AgNOR method. Results and their discussion. IUH induced the significant decrease in nucleoli number of the CMC of both heart ventricles, and also led to the impairment of karyo- and nucleolometric parameters of the CMC in the mature offspring. Administration of NALE peptide in dose of 100 µg/kg in neonatal period corrected the posthypoxic changes of the CMC nucleonucleolar apparatus. Neonatal administration of non-selective NO-synthase blocker (L-NAME, 50 mg/kg) obviated the registered effects of NALE. The correction of delayed posthypoxic changes, similar to the effects of NALE, was observed after administration of its arginineless analogue– the G peptide. Conclusions. The cardioprotective effect of NALE is partially mediated by L-arginine – a potential donator of nitric oxide. Non-opiate analogues of leu-enkephalin – the NALE and G peptides, might be considered as perspective cardioprotective substances with the delayed activity, preventing the long-term consequences of the IUH.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кардиомиоциты</kwd><kwd>внутриутробная гипоксия</kwd><kwd>оксид азота</kwd><kwd>ядрышки</kwd><kwd>неопиатные аналоги лей-энкефалина</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cardiomyocytes</kwd><kwd>intrauterine hypoxia</kwd><kwd>nitric oxide</kwd><kwd>nucleoli</kwd><kwd>non-opiate analogues of leu-enkephalin</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания № 124022900081-9 по теме «Регуляторные олигопептиды как потенциальные корректоры изменений при типовых патологических процессах».</funding-statement><funding-statement xml:lang="en">The study was carried out within the framework of the state assignment № 124022900081-9 by the subject «The regulatory oligopeptides as correctors of changes during typical pathological processes».</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">Patterson A.J., Zhang L. 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