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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-176-4-24-30</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-1300</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>КЛИНИЧЕСКАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Аммиак — новая терапевтическая мишень при хронических заболеваниях печени</article-title><trans-title-group xml:lang="en"><trans-title>Ammonia — new therapeutic target for chronic liver diseases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2489-602X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермолова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermolova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доцент кафедры факультетской терапии </p><p>Scopus Author ID:57199607813Санкт-Петербург </p></bio><bio xml:lang="en"><p>Аss. Professor of Faculty Therapy Department</p><p>Scopus Author ID:57199607813 St.-Petersburg </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермолов</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermolov</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУВО «Северо-Западный государственный медицинский университет им. И. И. Мечникова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FGBOU “North-Western State Medical University named after I. I. Mechnikov”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>23</day><month>06</month><year>2020</year></pub-date><volume>174</volume><issue>4</issue><fpage>24</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ермолова Т.В., Ермолов С.Ю., Белова А.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Ермолова Т.В., Ермолов С.Ю., Белова А.А.</copyright-holder><copyright-holder xml:lang="en">Ermolova T.V., Ermolov S.Y., Belova A.A.</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.nogr.org/jour/article/view/1300">https://www.nogr.org/jour/article/view/1300</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: изучить значение гипераммониемии в развитии нарушений печеночной микроциркуляции у пациентов хронических заболеваний печени с начальной стадией фиброза печени и возможности ее коррекции.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы: мы обследовали 69 пациентов молодого возраста с хроническими гепатитами с начальной стадией фиброза 0–2 стадиипо METAVIR (26 пациентов с хроническим вирусным гепатитом С, 43 пациента с неалкогольным стеатогепатитом). Уровень аммиака определяли в периферической крови методом одноволновой рефлексионной фотометрии на анализаторе PocketChem BA, ArcRay (Япония), для  оценкинарушений печеночной микроциркуляции использовали метод полигепатографии (ПГГ). Активность звездчатых клеток печени(ЗКП) определялась по экспрессии гладкомышечного актина-альфа (SMA-alfa) в биоптате печени. В плане коррекции гипераммониемии и нарушений печеночной микроциркуляции в нашем исследовании использовали гепатопротектор с гипоаммониемическим действием Орнитин (L-орнитин-L-аспартат).</p></sec><sec><title>Результаты</title><p>Результаты: уровень аммиака у пациентов с вирусным гепатитом С(ХВГС) и неалкогольным стеатогепатитом (НАСГ) оказался достоверно выше, чем в группе контроля, при этом уровень гипераммониемии преобладал у пациентов с НАСГ, чем при ХВГС. Нарушения печеночной микроциркуляции выявлены у всех пациентов, при этом выявлены особенности данных нарушений в зависимости от этиологии ХЗП. Данные гемодинамические расстройства сопровождались признаками активации ЗКП (экспрессия SMA-alfa). Анализ эффективности орнитина показал значительное снижение аммиака в крови и улучшение показателей внутрипеченочного кровотока у пациентов с различными типами нарушений портопеченочной гемодинамики на фоне лечения.</p></sec><sec><title>Заключение</title><p>Заключение: у пациентов с ХВГС и НАСГ уже на начальных стадиях фиброза печени выявляется гипераммониемия (при НАСГ достоверно выше), активация ЗКП, что приводит к нарушению портопеченочной гемодинамики у данных пациентов. Применение гепатопротектора с гипоаммониемическим действием орнитина приводит к снижению уровня аммиака в крови и улучшению микроциркуляции печени, что позволяет расширить возможности патогенетического лечения ХЗП в плане замедления фиброгенеза.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective: to study some mechanisms of progression of chronic liver diseases in patients with initial stage of liver fi brosis and the possibility of their correction.</p></sec><sec><title>Materials and methods</title><p>Materials and methods: a total of 69 young patients with chronic liver diseases with initial stage 0–2 fi brosis (26 patients with chronic viral hepatitis C, 43 patients with nonalcoholic steatohepatitis) were examined. Ammonia levels were determined in peripheral blood by the method of single photometry reveals on the analyzer PocketChem BA, ArcRay (Japan), for the integral evaluation of intrahepatic blood fl ow disorders was used polyhepatography (PHG) is a non — invasive method.The intensity of the activity of the stellate cells of the liver (HSCs) was determined according to the expression of SMA-alpha in a liver biopsy sample. In terms of correction of hyperammoniemia and portohepatic hemodynamics disorders in our study used hepatoprotector with hypoammoniemic eff ect ornithine (L-ornithine-L-aspartate).</p></sec><sec><title>Results</title><p>Results: ammonia levels in HCV patients and NASH patients was signifi cantly higher than in the control group, the level of hyperammoniemia prevailed in patients with NASH than HCV patients. Portohepatic hemodynamics disorders were detected in all patients, while the peculiarities of these disorders, depending on the etiology of hepatitis. These hemodynamic disorders were accompanied by signs of activation of HSCs. In the liver tissue we revealed expression of SMA-alpha in HSCs, indicating that the signs of activation of these cells. Efficiencyanalysis of the eff ectiveness of Ornithine showed a signifi cant reduction of ammonia in the blood and improvement in intrahepatic blood fl ow in patients with diff erent types of portohepatic hemodynamics disorders on the background of treatment.</p></sec><sec><title>Conclusion</title><p>Conclusion: in HCV and NASH patients, already at the initial stage sofl iver fi brosis, hyperammoniemia was detected (with HCV it was signifi cantly higher), activation of HSCs, which leads to impaired portohepatic hemodynamics in these patients. The use of a hepatoprotector with the hypoammoniemic eff ect Ornithine leads to a decrease of blood ammonia and an improvement of hepatic microcirculation, which allows expanding the possibilities of the pathogenetic treatment of chronic hepatitis for decrease of fi brogenesis. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гипераммониемия</kwd><kwd>звездчатые клетки печени</kwd><kwd>внутрипеченочная микроциркуляция</kwd><kwd>орнитин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hyperammoniemia</kwd><kwd>hepatic stellate cells</kwd><kwd>intrahepatic microcirculation</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">Nencki, M., Pawlow, J.P., Zaleski, J. 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