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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">Membrane and Cell Biology</journal-id><journal-title-group><journal-title xml:lang="en">Membrane and Cell Biology</journal-title><trans-title-group xml:lang="ru"><trans-title>Биологические мембраны</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0233-4755</issn><issn publication-format="electronic">3034-5219</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">362237</article-id><article-id pub-id-type="doi">10.7868/S3034521925060027</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">Functional Role of Piezo1 Channels in Smooth Muscle Cells of Rat Cerebral Arteries in Normal Conditions and in Chronic Carotid Artery Stenosis</article-title><trans-title-group xml:lang="ru"><trans-title>ФУНКЦИОНАЛЬНАЯ РОЛЬ КАНАЛОВ Piezo1 В ГЛАДКОМЫШЕЧНЫХ КЛЕТКАХ АРТЕРИЙ ГОЛОВНОГО МОЗГА КРЫСЫ В НОРМЕ И ПРИ ХРОНИЧЕСКОМ СТЕНОЗЕ СОННЫХ АРТЕРИЙ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gaynullina</surname><given-names>D. K</given-names></name><name xml:lang="ru"><surname>Гайнуллина</surname><given-names>Д. К</given-names></name></name-alternatives><email>dina.gaynullina@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Borzykh</surname><given-names>A. A</given-names></name><name xml:lang="ru"><surname>Борзых</surname><given-names>A. A</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pechkova</surname><given-names>M. G</given-names></name><name xml:lang="ru"><surname>Печкова</surname><given-names>M. Г</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogotskoy</surname><given-names>K. A</given-names></name><name xml:lang="ru"><surname>Богоцкой</surname><given-names>K. A</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tarasova</surname><given-names>O. S</given-names></name><name xml:lang="ru"><surname>Тарасова</surname><given-names>O. C</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">State Research Center of the Russian Federation – Institute of Medical and Biological Problems, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Государственный научный центр Российской Федерации – Институт медико-биологических проблем РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University,</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Lomonosov Moscow State University, Medical Research and Educational Institute</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова, Медицинский научно-образовательный институ</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2025</year></pub-date><volume>42</volume><issue>6</issue><issue-title xml:lang="en">VOL 42, NO6 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 42, №6 (2025)</issue-title><fpage>465</fpage><lpage>474</lpage><history><date date-type="received" iso-8601-date="2025-12-25"><day>25</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-12-25"/></permissions><self-uri xlink:href="https://journals.rcsi.science/0233-4755/article/view/362237">https://journals.rcsi.science/0233-4755/article/view/362237</self-uri><abstract xml:lang="en"><p>In arterial smooth muscle cells, Piezo1 channels participate in the regulation of vascular tone and remodeling in various diseases. They are non-selective cation channels, the activation of which can lead to depolarization of the smooth muscle cell membrane, the entry of Ca<sup>2+</sup> through voltage-gated channels and the development of contraction. This study tested the hypothesis that Piezo1 channels participate in the regulation of smooth muscle cell tone in small cerebral arteries and their functional contribution change in chronic stenosis of the carotid arteries. Rats obtained constrictor clips on both common carotid arteries (reduction in blood flow velocity by at least 70%). After 4 weeks, the middle cerebral artery (MCA) was isolated for wire myography (after removal of endothelium) and quantitative PCR. The basal tone of the MCA was lower in the Stenosis group than in the control, and contractile responses to thromboxane A<sub>2</sub> receptor agonist U46619 were not changed. Incubation with Dooku1 (Piezo1 blocker, 30 μM) resulted in a decrease in basal tone and contractile responses to U46619 in the MCA of control rats, but had no such effect in the MCA of the Stenosis group. The mRNA content of Piezo1 and L-type voltage-gated Ca<sup>2+</sup> channels (Ca<sub>v</sub>1.2) did not differ between the groups, whereas the mRNA content of T-type voltage-gated Ca<sup>2+</sup> channels (Ca<sub>v</sub>3.1) was reduced in the MCA of the Stenosis group compared to the control one. Thus, Piezo1 channels have a pro-contractile effect in the smooth muscle cells of rat cerebral arteries, and we have shown for the first time that such an effect decreases in chronic stenosis of the carotid arteries. The decrease in the pro-contractile effect of Piezo1 in the MCA of the Stenosis rats may be associated with the changes in not the Piezo1 channels themselves, but in the subsequent stages of signal transduction to the contractile apparatus of smooth muscle cells.</p></abstract><trans-abstract xml:lang="ru"><p>В гладкомышечных клетках артерий каналы Piezo1 принимают участие в регуляции сосудистого тонуса и ремоделировании при различных заболеваниях. Они представляют собой неселективные катионные каналы, активация которых может приводить к деполяризации мембраны гладкомышечных клеток, входу Ca<sup>2+</sup> через потенциал-управляемые каналы и развитию сокращения. Данная работа была направлена на проверку гипотезы, что каналы Piezo1 участвуют в регуляции тонуса гладкомышечных клеток мелких артерий мозга и их функциональный вклад может изменяться при хроническом стенозе сонных артерий. Крысам на обе общие сонные артерии надевали суживающие клипсы (снижение объемной скорости кровотока не менее чем на 70%). Через 4 недели изолировали среднюю мозговую артерию (СМА) для проведения исследований методами wire myography (после удаления эндотелия) и количественной ПЦР. Уровень базального тонуса СМА был ниже у крыс группы «Стеноз», чем в контроле, сократительные ответы при активации рецепторов тромбоксана А<sub>2</sub> веществом U46619 не были изменены. Инкубация с Dooku1 (блокатор Piezo1, 30 мкМ) приводила к уменьшению базального тонуса и сократительных ответов на U46619 в СМА контрольных крыс, но не оказывала такого влияния в СМА крыс группы «Стеноз». Содержание мРНК Piezo1 и потенциал-управляемых Ca<sup>2+</sup>-каналов L-типа (Ca<sub>v</sub>1.2) не различалось между группами, тогда как содержание мРНК потенциал-управляемых Ca<sup>2+</sup>-каналов T-типа (Ca<sub>v</sub>3.1) было уменьшенным в СМА группы «Стеноз» по сравнению с контролем. Таким образом, каналы Piezo1 обладают просократительным влиянием в гладкомышечных клетках артерий мозга крысы, и такое влияние уменьшается при хроническом стенозе сонных артерий. Снижение просократительного влияния Piezo1 в СМА крыс группы «Стеноз» может быть связано с развитием изменений на уровне не самих каналов Piezo1, а последующих этапов передачи сигнала к сократительному аппарату гладкомышечных клеток.</p></trans-abstract><kwd-group xml:lang="en"><kwd>middle cerebral artery</kwd><kwd>thromboxane A<sub>2</sub></kwd><kwd>myogenic tone</kwd><kwd>Piezo1</kwd><kwd>voltage-gated calcium channels</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>средняя мозговая артерия</kwd><kwd>тромбоксан А<sub>2</sub></kwd><kwd>миогенный тонус</kwd><kwd>Piezo1</kwd><kwd>потенциал-управляемые кальциевые каналы</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Российского научного фонда (проект № 23-15-00331).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Coste B., Mathur J., Schmidt M., Earley T.J., Ranade S., Petrus M.J., Dubin A.E., Patapoutian A. 2010. 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