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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">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">637176</article-id><article-id pub-id-type="doi">10.17816/KMJ637176</article-id><article-id pub-id-type="edn">CSRVQJ</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theoretical and clinical medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теоретическая и клиническая медицина</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">Diagnostic Potential of Biochemical Markers in Acute Mesenteric Ischemia: A Modern Approach</article-title><trans-title-group xml:lang="ru"><trans-title>Поиск современного подхода к диагностике острой мезентериальной ишемии с использованием биохимических маркеров</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6646-8595</contrib-id><contrib-id contrib-id-type="spin">9806-5369</contrib-id><name-alternatives><name xml:lang="en"><surname>Kochetkov</surname><given-names>Fedor D.</given-names></name><name xml:lang="ru"><surname>Кочетков</surname><given-names>Федор Дмитриевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant Lecturer, Depart. of Faculty Surgery surgeon, Depart. of Emergency Surgery</p></bio><bio xml:lang="ru"><p>ассистент, каф. факультетской хирургии, врач-хирург, отделение неотложной хирургии</p></bio><email>kochetkovf@bk.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1292-5452</contrib-id><contrib-id contrib-id-type="spin">6473-8662</contrib-id><name-alternatives><name xml:lang="en"><surname>Suchkov</surname><given-names>Igor A.</given-names></name><name xml:lang="ru"><surname>Сучков</surname><given-names>Игорь Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Depart. of Cardiovascular, X-ray Endovascular Surgery and Radiology</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, каф. сердечно-сосудистой, рентгенэндоваскулярной хирургии и лучевой диагностики</p></bio><email>suchkov_med@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1822-3021</contrib-id><contrib-id contrib-id-type="spin">4556-7922</contrib-id><name-alternatives><name xml:lang="en"><surname>Zaitsev</surname><given-names>Oleg V.</given-names></name><name xml:lang="ru"><surname>Зайцев</surname><given-names>Олег Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Depart. of Hospital Surgery</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, каф. госпитальной хирургии</p></bio><email>ozaitsev@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1531-6547</contrib-id><contrib-id contrib-id-type="spin">7210-8326</contrib-id><name-alternatives><name xml:lang="en"><surname>Samarina</surname><given-names>Darya A.</given-names></name><name xml:lang="ru"><surname>Самарина</surname><given-names>Дарья Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>6th year student, Faculty of Medicine</p></bio><bio xml:lang="ru"><p>студент VI курса, лечебный факультет</p></bio><email>daryhay.foreve@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-6875-2763</contrib-id><name-alternatives><name xml:lang="en"><surname>Antonov</surname><given-names>Vasily S.</given-names></name><name xml:lang="ru"><surname>Антонов</surname><given-names>Василий Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5th year student, Faculty of Medicine</p></bio><bio xml:lang="ru"><p>студент V курса, лечебный факультет</p></bio><email>nazcap88@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ryazan State Medical University</institution></aff><aff><institution xml:lang="ru">Рязанский государственный медицинский университет им. Акад. И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Regional Clinical Hospital Ryazan</institution></aff><aff><institution xml:lang="ru">Областная клиническая больница г. Рязань</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-05-07" publication-format="electronic"><day>07</day><month>05</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2025</year></pub-date><volume>106</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>375</fpage><lpage>381</lpage><history><date date-type="received" iso-8601-date="2024-10-17"><day>17</day><month>10</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-12-27"><day>27</day><month>12</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</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="2028-06-15"/></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/637176">https://kazanmedjournal.ru/kazanmedj/article/view/637176</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><italic>:</italic> Early and specific diagnosis of urgent abdominal conditions is prioritized in contemporary surgical practice because it facilitates minimally invasive interventions and improves postoperative outcomes.</p> <p><bold><italic>AIM:</italic></bold> To assess the diagnostic value, specificity, and sensitivity of selected biochemical markers and establish reference values for identifying acute mesenteric ischemia.</p> <p><bold><italic>MATERIAL AND METHODS:</italic></bold> The biochemical markers of acute mesenteric ischemia were analyzed in 40 patients admitted at the Surgical Department of Ryazan Regional Clinical Hospital between January and November 2023. Two patient groups were formed: the main group included 24 patients with acute reversible mesenteric ischemia, and the control group comprised 16 patients with atherosclerotic or embolic bowel gangrene. The following candidate markers were evaluated: diamine oxidase, tumor protein p53, and nitric oxide. A prospective study was conducted. Statistical analysis was performed using StatTech 4.2.7. Quantitative variables were assessed for distribution using the Shapiro–Wilk test. The two groups were compared based on quantitative variables using the Mann–Whitney U test. The diagnostic utility of the quantitative indicators of outcome prediction was evaluated using ROC curve analysis. The cut-off quantitative variable value was determined based on the maximum Youden index.</p> <p><bold><italic>RESULTS:</italic></bold> Tumor protein p53 levels ≥40.30 μmol/L, diamine oxidase ≥5.59 μmol/L, and nitric oxide ≥48.13 μmol/L were predictive of acute mesenteric ischemia before the onset of irreversible bowel wall damage. The sensitivity and specificity of tumor protein p53 were 83.3% and 100%, respectively, and 100% and 94.4% for diamine oxidase and 100% and 91.1% for nitric oxide.</p> <p><bold><italic>CONCLUSION:</italic></bold> Diamine oxidase, tumor protein p53, and nitric oxide are good biochemical markers for the early diagnosis of acute mesenteric ischemia.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность.</bold> В современной хирургии предпочтение отдаётся ранней специфической диагностике ургентных заболеваний органов брюшной полости, что даёт возможность проведения мини-инвазивных вмешательств и улучшает послеоперационные результаты.</p> <p><bold>Цель.</bold> Выявить диагностическую ценность, специфичность, чувствительность, а также определить референсные значения некоторых биохимических маркеров в развитии острой мезентериальной ишемии.</p> <p><bold>Материал и методы.</bold> Исследование маркеров острой мезентериальной ишемии проведено у 40 пациентов на базе хирургического отделения Областной клинической больницы города Рязани в период с января по ноябрь 2023 г. Были сформированы две группы пациентов: в основную группу вошли пациенты (n=24) с диагнозом «острая обратимая мезентериальная ишемия», в контрольную группу (n=16) вошли больные с диагнозом «атеросклеротическая/эмболическая гангрена кишечника». Использовали следующие предполагаемые маркеры: диаминоксидаза, опухолевый белок р53, оксид азота. Исследование проводили проспективно. Статистический анализ выполнили с использованием программы StatTech 4.2.7. Количественные показатели рассчитывали по распределению с помощью критерия Шапиро–Уилка. Сравнение обеих групп по количественному показателю выполняли с помощью U-критерия Манна–Уитни. Для оценки диагностической значимости количественных признаков при прогнозировании определённого исхода применяли метод анализа ROC-кривых. Разделяющее значение количественного признака в точке cut-off определяли по наивысшему значению индекса Юдена.</p> <p><bold>Результаты.</bold> В ходе исследования было установлено, что при значениях опухолевого белка p53 выше или равном 40,30 мкмоль/л, диаминооксидазы — выше или равном 5,59 мкмоль/л, оксида азота — выше или равном 48,13 мкмоль/л прогнозируется наличие острой мезентериальной ишемии до наступления необратимых изменений в стенке органа. Чувствительность и специфичность модели опухолевого белка p53 составили 83,3 и 100,0%, модели диаминооксидазы — 100,0 и 94,4%, модели оксида азота — 100,0 и 91,1%.</p> <p><bold>Заключение.</bold> Диаминоксидаза, опухолевый белок р53 и оксид азота являются биохимическими маркерами острой мезентериальной ишемии, помогающими своевременной постановке диагноза.</p></trans-abstract><kwd-group xml:lang="en"><kwd>acute mesenteric ischemia</kwd><kwd>citrulline</kwd><kwd>fatty acid-binding protein</kwd><kwd>diamine oxidase</kwd><kwd>nitric oxide</kwd><kwd>p53</kwd><kwd>bowel gangrene</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>острая мезентериальная ишемия</kwd><kwd>цитруллин</kwd><kwd>белок связывающий жирные кислоты</kwd><kwd>диаминоксидаза</kwd><kwd>оксид азота</kwd><kwd>p53</kwd><kwd>гангрена кишечника</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Ponomareva AD, Leiderman IN, Kasherininov IY. 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