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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="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">75728</article-id><article-id pub-id-type="doi">10.17816/KMJ2022-250</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Обзоры</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Possible pathophysiological mechanisms of cardiac troponin level elevations in blood serum and urine in arterial hypertension</article-title><trans-title-group xml:lang="ru"><trans-title>Возможные патофизиологические механизмы повышения уровней сердечных тропонинов в сыворотке крови и моче при артериальной гипертензии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2712-0227</contrib-id><contrib-id contrib-id-type="scopus">6506421183</contrib-id><contrib-id contrib-id-type="researcherid">https://publons.com/researcher/1773952/aleksey-chaulin/</contrib-id><contrib-id contrib-id-type="spin">1107-0875</contrib-id><name-alternatives><name xml:lang="en"><surname>Chaulin</surname><given-names>Akeksey M.</given-names></name><name xml:lang="ru"><surname>Чаулин</surname><given-names>Алексей Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>M.D.., PhD Stud., Assistant, Depart. of Histology and Embryology; doctor</p></bio><bio xml:lang="ru"><p>асп., асс., каф. гистологии и эмбриологии; врач</p></bio><email>alekseymichailovich22976@gmail.com</email><uri>https://www.researchgate.net/profile/Aleksey-Chaulin</uri><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Samara State Medical University</institution></aff><aff><institution xml:lang="ru">Самарский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Samara Regional Cardiology Dispensary</institution></aff><aff><institution xml:lang="ru">Самарский областной клинический кардиологический диспансер</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-04-12" publication-format="electronic"><day>12</day><month>04</month><year>2022</year></pub-date><volume>103</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>250</fpage><lpage>258</lpage><history><date date-type="received" iso-8601-date="2021-07-06"><day>06</day><month>07</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2022-02-02"><day>02</day><month>02</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Эко-Вектор</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-04-12"/></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/75728">https://kazanmedjournal.ru/kazanmedj/article/view/75728</self-uri><abstract xml:lang="en"><p>The review aimed to discuss and detail the main mechanisms of myocardial cell injury and increased concentrations of cardiac specific troponin isoforms (cTnI and cTnT) in blood serum and urine in hypertension. The search and analysis of foreign and domestic literature were carried out using the MedLine, EMBASE, Scopus and eLibrary databases to achieve this goal. According to recent experimental and clinical researches using high and ultra-sensitive methods for determining cTnI and cTnT, cardiomyocytes are extremely sensitive to many damaging factors in a number of physiological and pathological conditions. The serum concentrations of cTnI and cTnT can increase at the earliest stages of cardiovascular diseases (for example, in prehypertension, latent forms of coronary heart disease, arterial hypertension) and are important for predicting subsequent complications in the form of acute and life-threatening cardiovascular diseases (myocardial infarction, stroke, heart failure, and others). Moreover, troponin molecules can be detected not only in blood serum but also in non-invasively obtained biological fluids, including urine and oral fluid, which in the future can be used as new methods for the non-invasive diagnosis of many cardiovascular diseases. Although elevated levels of cTnI and cTnT in blood serum and urine in hypertension have a fairly high diagnostic and prognostic value, the pathophysiological mechanisms of cardiac troponins level elevations in human biological fluids in this pathological condition remain unclear.</p></abstract><trans-abstract xml:lang="ru"><p>Цель данного обзора заключается в подробном обсуждении основных механизмов повреждения клеток мио­карда и повышения концентраций кардиоспецифических изоформ тропонинов (cTnI и cTnT) в сыворотке крови и моче при артериальной гипертензии. Для достижения поставленной цели проведён поиск и анализ зарубежной и отечественной литературы с использованием баз данных MedLine, EMBASE, Scopus и eLibrary. Согласно результатам недавних экспериментальных и клинических исследований с использованием высоко- и ультрачувствительных методов определения cTnI и cTnT, кардиомиоциты чрезвычайно чувствительны ко многим повреждающим факторам при целом ряде физиологических и патологических состояний. Концентрации cTnI и cTnT в сыворотке крови могут повышаться на самых ранних этапах патогенеза сердечно-сосудистых заболеваний, например при предгипертензии, латентных формах ишемической болезни сердца, артериальной гипертензии, и имеют большое значение для прогнозирования последующих осложнений в виде острых и опасных для жизни сердечно-сосудистых заболеваний (инфаркта миокарда, инсульта, сердечной недостаточности и др.). Более того, молекулы тропонинов могут определяться не только в сыворотке крови, но и в неинвазивно получаемых биологических жидкостях, включая мочу и ротовую жидкость, что в перспективе можно использовать в качестве новых методов неинвазивной диагностики многих видов сердечно-сосудистой патологии. Хотя повышенные уровни cTnI и cTnT в сыворотке крови и моче при артериальной гипертензии имеют довольно высокую диагностическую и прогностическую ценность, неясными остаются патофизиологические механизмы повышения концентраций сердечных тропонинов в биологических жидкостях человека при данном патологическом состоянии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>review</kwd><kwd>troponin T</kwd><kwd>troponin I</kwd><kwd>highly sensitive immunoassays</kwd><kwd>pathophysiological mechanisms</kwd><kwd>prehypertension</kwd><kwd>arterial hypertension</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>обзор</kwd><kwd>тропонин Т</kwd><kwd>тропонин I</kwd><kwd>высокочувствительные иммуноанализы</kwd><kwd>патофизиологические механизмы</kwd><kwd>предгипертензия</kwd><kwd>артериальная гипертензия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Chaulin AM, Karslyan LS, Duplyakov DV. 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