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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">clinvest</journal-id><journal-title-group><journal-title xml:lang="ru">Качественная клиническая практика</journal-title><trans-title-group xml:lang="en"><trans-title>Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2588-0519</issn><issn pub-type="epub">2618-8473</issn><publisher><publisher-name>ООО «Издательство ОКИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/2588-0519-2024-1-86-90</article-id><article-id custom-type="edn" pub-id-type="custom">ZOJYWG</article-id><article-id custom-type="elpub" pub-id-type="custom">clinvest-699</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>ВНУТРЕННИЕ БОЛЕЗНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INTERNAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Циркадный маркер язвенной болезни двенадцатиперстной кишки</article-title><trans-title-group xml:lang="en"><trans-title>Circadian marker in duodenal ulcer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4950-8799</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Эседов</surname><given-names>Э. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Esedov</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эседов Эсед Мутагирович — д. м. н., профессор кафедры госпитальной терапии № 2.</p><p>Махачкала</p></bio><bio xml:lang="en"><p>Esed M. Esedov — PhD, Dr. Sci. (Med.), Professor, Department of Hospital Therapy No. 2.</p><p>Makhachkala</p></bio><email xlink:type="simple">esedov02.12.35@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/0000-0002-4590-2134</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мусаева</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Musaeva</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мусаева Луиза Надировна — ассистент кафедры госпитальной терапии № 2.</p><p>Махачкала</p></bio><bio xml:lang="en"><p>Luiza N. Musaeva — assistant, Department of Hospital Therapy No. 2.</p><p>Makhachkala</p></bio><email xlink:type="simple">lusy060592@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Дагестанский государственный медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBEI HE «Dagestan State Medical University» MOH Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>04</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>86</fpage><lpage>90</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Эседов Э.М., Мусаева Л.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Эседов Э.М., Мусаева Л.Н.</copyright-holder><copyright-holder xml:lang="en">Esedov E.M., Musaeva L.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://www.clinvest.ru/jour/article/view/699">https://www.clinvest.ru/jour/article/view/699</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: изучить содержание мелатонина в венозной крови, оценить сезонную изменчивость гормона у больных язвенной болезнью двенадцатиперстной кишки (ЯБДПК) и установить возможную взаимосвязь между изучаемыми показателями.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Обследовано 45 пациентов с различной клинической активностью ЯБДПК при обострении и в динамике лечения. Определение мелатонина в венозной крови проводили методом высокоэффективной жидкостной хроматографии c тандемной масс-спектрометрией. Для оценки состояния двенадцатиперстной кишки использовалась фиброгастродуоденоскопия гастродуоденальной зоны с использованием эндоскопов фирмы Exera (cIF160) и Olympus.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что в активной стадии ЯБДПК уровни гормона мелатонина снижены. С целью изучения возможного влияния световой освещённости на содержание мелатонина нами была изучена продукция этого индола в группах больных ЯБДПК в разные времена года. Выяснилось, что содержание мелатонина было достоверно ниже в группе пациентов с язвенной болезнью в зимне-весеннее время.</p></sec><sec><title>Заключение</title><p>Заключение. Проведённый регрессионный и корреляционный анализ выявил положительную умеренную зависимость показателя мелатонина от продолжительности светового дня в венозной крови. Клиническая ремиссия ЯБДПК через 2 месяца сопровождалась увеличением выработки мелатонина.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>The purpose</title><p>The purpose. To study the content of melatonin in venous blood, to assess the seasonal variability of the hormone in patients with duodenal ulcer (DU) and to establish a possible relationship between the studied parameters.</p></sec><sec><title>Material and methods</title><p>Material and methods. 45 patients with varying clinical activity of DU during exacerbation and during treatment were examined. Determination of melatonin in venous blood was carried out using high-performance liquid chromatography with tandem mass spectrometry. To assess the condition of the duodenum, fibrogastroduodenoscopy of the gastroduodenal zone we used Exera (cIF160) and Olympus endoscopes.</p></sec><sec><title>Results</title><p>Results. It has been established that in the active stage of DU the levels of the hormone melatonin are reduced. In order to study the possible effect of light illumination on melatonin content, we studied the production of this indole in groups of patients with DU at different times of the year. It turned out that the melatonin content was significantly lower in the group of patients with peptic ulcer disease in winter and spring.</p></sec><sec><title>Conclusion</title><p>Conclusion. The regression and correlation analysis carried out revealed a positive moderate dependence of the melatonin indicator on the duration of daylight hours in the venous blood. Clinical remission of DU after 2 months was accompanied by an increase in melatonin production.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>мелатонин</kwd><kwd>язвенная болезнь двенадцатиперстной кишки</kwd><kwd>венозная кровь</kwd><kwd>сезонная изменчивость</kwd><kwd>световой день</kwd><kwd>продукция индола</kwd></kwd-group><kwd-group xml:lang="en"><kwd>melatonin</kwd><kwd>duodenal ulcer</kwd><kwd>venous blood</kwd><kwd>seasonal variability</kwd><kwd>daylight hours</kwd><kwd>indole production</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ahluwalia A, Brzozowska IM, Hoa N, et al. Melatonin signaling in mitochondria extends beyond neurons and neuroprotection: Implications for angiogenesis and cardio/gastroprotection. 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