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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">kpccz</journal-id><journal-title-group><journal-title xml:lang="ru">Комплексные проблемы сердечно-сосудистых заболеваний</journal-title><trans-title-group xml:lang="en"><trans-title>Complex Issues of Cardiovascular Diseases</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2306-1278</issn><issn pub-type="epub">2587-9537</issn><publisher><publisher-name>Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17802/2306-1278-2025-14-2-110-126</article-id><article-id custom-type="elpub" pub-id-type="custom">kpccz-1669</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 ИССЛЕДОВАНИЯ. Патологическая физиология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL STUDIES. Pathological physiology</subject></subj-group></article-categories><title-group><article-title>СРАВНЕНИЕ ЭКСПРЕССИИ МОДИФИЦИРОВАННЫХ ФОРМ ЭНДОТЕЛИАЛЬНОЙ СИНТАЗЫ МОНООКСИДА АЗОТА У ГИПЕР- И НОРМОТЕНЗИВНЫХ КРЫС</article-title><trans-title-group xml:lang="en"><trans-title>COMPARISON OF MODIFIED ENDOTHELIAL NITRIC OXIDE SYNTHASE FORMS IN HYPERTENSIVE AND NORMOTENSIVE RATS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4124-2316</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богданов</surname><given-names>Лев Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Bogdanov</surname><given-names>Leo A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат биологических наук научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>PhD, Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">bogdanovleone@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/0009-0002-1834-6045</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кондратьев</surname><given-names>Егор Андреевич</given-names></name><name name-style="western" xml:lang="en"><surname>Kondratiev</surname><given-names>Egor A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">kondr6216@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/0000-0001-6840-1116</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кошелев</surname><given-names>Владислав Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Koshelev</surname><given-names>Vladislav A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">vladkoshelev80@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/0000-0002-5558-3229</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухамадияров</surname><given-names>Ринат Авхадиевич</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhamadiyarov</surname><given-names>Rinat A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат биологических наук старший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>PhD, Senior Researcher, Laboratory for Molecular, Translational, and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">rem2257@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/0000-0003-2810-3100</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каноныкина</surname><given-names>Анастасия Юрьевна</given-names></name><name name-style="western" xml:lang="en"><surname>Kanonykina</surname><given-names>Anastasia Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">koteyan@inbox.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/0000-0002-1867-6354</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазебная</surname><given-names>Анастасия Ивановна</given-names></name><name name-style="western" xml:lang="en"><surname>Lazebnaya</surname><given-names>Anastasia A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">anastasialazebnaa2@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/0009-0002-6293-6974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюрина</surname><given-names>Арина Евгеньевна</given-names></name><name name-style="western" xml:lang="en"><surname>Tyurina</surname><given-names>Arina E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины отдела экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Molecular, Translational and Digital Medicine, Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">arishenka.tyurina@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/0000-0001-8679-4857</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кутихин</surname><given-names>Антон Геннадьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Kutikhin</surname><given-names>Anton G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук заведующий отделом экспериментальной медицины федерального государственного бюджетного научного учреждения «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Российская Федерация</p></bio><bio xml:lang="en"><p>PhD, Head of the Department of Experimental Medicine, Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”, Kemerovo, Russian Federation</p></bio><email xlink:type="simple">antonkutikhin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний»<country>Россия</country></aff><aff xml:lang="en">Federal State Budgetary Institution “Research Institute for Complex Issues of Cardiovascular Diseases”<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>05</day><month>05</month><year>2025</year></pub-date><volume>14</volume><issue>2</issue><fpage>110</fpage><lpage>126</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Богданов Л.А., Кондратьев Е.А., Кошелев В.А., Мухамадияров Р.А., Каноныкина А.Ю., Лазебная А.И., Тюрина А.Е., Кутихин А.Г., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Богданов Л.А., Кондратьев Е.А., Кошелев В.А., Мухамадияров Р.А., Каноныкина А.Ю., Лазебная А.И., Тюрина А.Е., Кутихин А.Г.</copyright-holder><copyright-holder xml:lang="en">Bogdanov L.A., Kondratiev E.A., Koshelev V.A., Mukhamadiyarov R.A., Kanonykina A.Y., Lazebnaya A.A., Tyurina A.E., Kutikhin A.G.</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://www.nii-kpssz.com/jour/article/view/1669">https://www.nii-kpssz.com/jour/article/view/1669</self-uri><abstract><sec><title>Основные положения</title><p>Основные положения</p></sec><sec><title> </title><p> </p></sec><sec><title>Резюме</title><p>Резюме</p></sec><sec><title>Цель</title><p>Цель. Изучить экспрессию эндотелиальной синтазы монооксида азота (eNOS) и ее модифицированных форм в эндотелии интимы аорты и микрососудов периаортальной жировой ткани гипер- и нормотензивных крыс.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование были включены самцы гипертензивных крыс линии НИСАГ (n = 12) и нормотензивных крыс линии Wistar (n = 12) в возрасте 4 мес. После подготовки криосрезов нисходящей аорты проводили иммуногистохимическое окрашивание различными антителами к eNOS и фосфорилированным формам eNOS (Ser117, Thr495, Ser632, Ser1177). После оцифровки препаратов на слайд-сканере выполняли полуколичественный анализ интенсивности иммуногистохимического сигнала в эндотелии интимы аорты и микрососудов периаортальной жировой ткани в программе ImageJ. Статистический анализ проводили при помощи критерия Манна – Уитни (при сравнении экспрессии в эндотелии гипер- и нормотензивных крыс) и критерия Уилкоксона (при сравнении экспрессии в эндотелии интимы аорты и микрососудов периаортальной жировой ткани).</p></sec><sec><title>Результаты</title><p>Результаты. Эндотелий интимы аорты и периаортальной жировой ткани гипертензивных крыс НИСАГ характеризовался тенденцией повышения экспрессии общей фракции eNOS независимо от применяемого антитела (хотя паттерн окрашивания при использовании различных антител несколько отличался). В эндотелии интимы аорты гипертензивных крыс отмечено статистически значимое повышение экспрессии форм eNOS, фосфорилированных в позициях Ser632 и Ser1177 (активирующее фосфорилирование), а в эндотелии микрососудов периаортальной жировой ткани – статистически значимое повышение экспрессии общей фракции eNOS (при оценке одним из антител) и форм eNOS, фосфорилированных в позициях Ser117, Thr495 (ингибирующее фосфорилирование) и Ser632 (активирующее фосфорилирование). Экспрессия общей фракции eNOS и всех ее фосфорилированных форм в эндотелии микрососудов периаортальной жировой ткани была статистически значимо выше, чем в эндотелии интимы аорты.</p></sec><sec><title>Заключение</title><p>Заключение. В сравнении с нормотензивными крысами Wistar гипертензивные крысы НИСАГ характеризовались повышением экспрессии различных фосфорилированных форм eNOS в эндотелии интимы аорты (где преобладали формы, повышающие активность eNOS) и эндотелии микрососудов периаортальной жировой ткани (где преобладали формы, снижающие активность eNOS). В сравнении с эндотелием интимы аорты эндотелий микрососудов периаортальной жировой ткани демонстрировал повышенную экспрессию как общей фракции eNOS, так и ее фосфорилированных форм.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Highlights</title><p>Highlights</p></sec><sec><title> </title><p> </p></sec><sec><title>Abstract</title><p>Abstract</p></sec><sec><title>Aim</title><p>Aim. To study the expression of endothelial nitric oxide synthase (eNOS) and its modified forms in the aortic endothelial cells and perivascular endothelial cells in hypertensive and normotensive rats.</p></sec><sec><title>Methods</title><p>Methods. The study included 12 male hypertensive ISIAH rats and 12 male normotensive Wistar rats at the 4 months of age. Following the cryosectioning, we performed an immunohistochemical staining of descending aorta using different antibodies to total eNOS and to phosphorylated eNOS (Ser117, Thr495, Ser632, Ser1177). Next, we scanned the whole slide images and conducted a semi-quantitative analysis of immunohistochemical signal in the aortic endothelial cells and perivascular endothelial cells using ImageJ software. Statistical analysis was carried out by Mann–Whitney U-test (when comparing eNOS expression in the endothelium of hypertensive and normotensive rats) and Wilcoxon matched-pairs signed-rank test (when comparing eNOS expression in the aortic endothelial cells and perivascular endothelial cells).</p></sec><sec><title>Results</title><p>Results. Aortic endothelial cells and perivascular endothelial cells of hypertensive rats tended to the increase in total eNOS regardless of the antibody, although the staining pattern differed across the antibodies. Aortic endothelial cells of hypertensive rats had higher expression of eNOS phosphorylated at Ser632 and Ser1177 sites (activating phosphorylation) whereas perivascular endothelial cells displayed elevated levels of eNOS phosphorylated at Ser117 and Thr495 (inhibiting phosphorylation) and Ser632 (activating phosphorylation). Expression of total and phosphorylated eNOS in perivascular endothelial cells was significantly higher than in the aortic endothelial cells.</p></sec><sec><title>Conclusion</title><p>Conclusion. In comparison with normotensive Wistar rats, hypertensive ISIAH rats are characterised by an increased expression of activated eNOS in the aortic endothelial cells (Ser632 and Ser1177 phosphorylation) and by an elevated expression of inhibited eNOS (Ser117 and Thr395 phosphorylation) in the perivascular endothelial cells. Perivascular endothelial cells have a higher expression of total and phosphorylated eNOS than aortic endothelial cells.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Артериальная гипертензия</kwd><kwd>Эндотелиальные клетки</kwd><kwd>Дисфункция эндотелия</kwd><kwd>Гипертензивные крысы</kwd><kwd>Нормотензивные крысы</kwd><kwd>Эндотелиальная NO-синтаза</kwd><kwd>Фосфорилирование eNOS</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Arterial hypertension</kwd><kwd>Endothelial cells</kwd><kwd>Endothelial dysfunction</kwd><kwd>Hypertensive rats</kwd><kwd>Normotensive rats</kwd><kwd>Endothelial nitric oxide synthase</kwd><kwd>eNOS phosphorylation</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено при поддержке гранта Российского научного фонда № 24-75-10057 «Идентификация клеточных маркеров дисфункции эндотелия», https://rscf.ru/project/24-75-10057/.</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">Kutikhin AG, Shishkova DK, Velikanova EA, Sinitsky MY, Sinitskaya AV, Markova VE. 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