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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-207-11-5-16</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-2184</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>ПЕРЕДОВАЯ СТАТЬЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LEADING ARTICLE</subject></subj-group></article-categories><title-group><article-title>Эффективность L-орнитин L-аспартата (LOLA) для коррекции когнитивных и гепатотропных расстройств в постковидном периоде: результаты многоцентрового проспективного наблюдательного исследования «Клиническое значение гипераммониемии у пациентов с постковидным синдромом (ЛИРА - COVID)»</article-title><trans-title-group xml:lang="en"><trans-title>Results of a multicenter prospective observational study “Clinical significance of hyperammonemia in patients with post-Covid syndrome (LIRA - COVID)”: efficacy of L-ornithine L-aspartate</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8736-5851</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазебник</surname><given-names>Л. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Lazebnik</surname><given-names>L. B.</given-names></name></name-alternatives><email xlink:type="simple">leonid.borisl@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8844-2465</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Туркина</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Turkina</surname><given-names>S. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2375-517X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мязин</surname><given-names>Р. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Myazin</surname><given-names>R. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1496-0689</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тарасова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarasova</surname><given-names>L. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><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><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9497-2916</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кожевникова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozhevnikova</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7069-2725</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абдулганиева</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Abdulganieva</surname><given-names>D. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-6"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный медико-стоматологический университет имени А. И. Евдокимова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Medicine and Density n. a. A. I. Evdokimov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение высшего образования «Волгоградский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Чувашский государственный университет имени И. Н. Ульянова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The Chuvashian State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Северо - Западный государственный медицинский университет им. И. И. Мечникова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North- Western state medical University named I. I. Mechnikov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Воронежский государственный медицинский университет им. Н. Н. Бурденко» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University named after N. N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Казанский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>23</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>11</issue><fpage>5</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лазебник Л.Б., Туркина С.В., Мязин Р.Г., Тарасова Л.В., Ермолова Т.В., Кожевникова С.А., Абдулганиева Д.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Лазебник Л.Б., Туркина С.В., Мязин Р.Г., Тарасова Л.В., Ермолова Т.В., Кожевникова С.А., Абдулганиева Д.И.</copyright-holder><copyright-holder xml:lang="en">Lazebnik L.B., Turkina S.V., Myazin R.G., Tarasova L.V., Ermolova T.V., Kozhevnikova S.A., Abdulganieva D.I.</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/2184">https://www.nogr.org/jour/article/view/2184</self-uri><abstract><p>У 10-65% пациентов с легкой или средней степенью тяжести COVID-19 может формироваться так называемый постковидный синдром (ПКС). Повреждение печени, нередко возникающие в ходе острого течения COVID-19, могут длительно сохраняться и приводить к формированию гипераммониемии (ГА), что в свою очередь может обуславливать появления печеночной энцефалопатии (ПЭ). Целью настоящего исследования явилось изучение проявления ГА при ПКС, а также возможность ее коррекции с использованием L-орнитин - L-аспартата (LOLA). В мультицентровое проспективное наблюдательное клиническое исследование вошли 83 пациента (средний возраст - 51,71 ± 12,82 лет) с ПКС, предъявлявшие жалобы на нарушение внимания и памяти, имевшие признаки астенического синдрома. У включенных пациентов регистрировалась ГИ, повышение уровня АЛТ и АСТ выше 2 норм. Всем пациентам исходно и на 4 неделе проводился физикальный осмотр, тест связи чисел, определение выраженности астении, измерение концентрации аммиака и уровней АЛТ, АСТ в крови. Для коррекции ГА в рамках исследования пациенты получали дополнительно препарат LOLA в дозе 3 г 3 раза в сутки в течение 4 недель. После окончания курса лечения LOLA уровень аммиака снизился в 81 случае (97,6% больных). Время выполнения теста связи чисел пациентами в начале исследования составляло 64,67 ± 24,95 сек, после проведенной терапии с применением LOLA - 49,43 ± 15,85 сек (p&lt;0.001). До лечения лишь у 6% пациентов не было ПЭ, 50,6% имели 1 стадию ПЭ и 30,1%-1-2 стадию (промежуточную) ПЭ, 2 стадия ПЭ - у 10,9%, 3 стадия ПЭ - у 2,4%. После лечения с применением LOLA структура распределения поменялась: 41% пациентов были без ПЭ, 36,1% - пациенты с 1 стадией ПЭ, 22,9% - с 1-2 (промежуточной) стадией ПЭ, 2 и 3 стадия ПЭ более не определялась (p&lt;0.001). Средний балл по результатам опроса уровня астении у пациентов до лечения составил 64,71 ± 19,18 балла, после лечения с применением LOLA - 46,27 ± 10,00 балла (p&lt;0.001). Уровень АЛТ до лечения составлял 95,75 ± 68,99 Ед/л, в ходе проводимой терапии с применением LOLA отмечено его снижение до 47,83 ± 38,21 Ед/л (p&lt;0.001). Показатель АСТ до лечения у пациентов в среднем составлял 78,51 ± 90,90 Ед/л, после лечения с применением LOLA - 40,10 ± 35,97 Ед/л (p&lt;0.001). Нежелательные явления зарегистрированы не были. У пациентов с ПКС при наличии ГИ отмечался повышенный уровень астении, признаки печеночной энцефалопатии и повреждения печени, на что указывали высокие значения печеночных трансаминаз. Назначение LOLA в дозе 3 г 3 раза в сутки в течение 4 недель привело к значимым улучшениям в объективном и субъективном состоянии пациентов.</p></abstract><trans-abstract xml:lang="en"><p>Epidemiological data suggests that approximately 10-65% of patients with mild to moderate COVID-19 have persistent symptoms already after an acute infection, which may last for six months or more. Previous clinical studies have shown that similar symptoms may also occur in the liver. Russian scientists have studied the phenomenon of hyperammonemia in the acute phase of COVID-19, but the problem of elevated blood ammonia levels in post - COVID syndrome has not been studied before. One possible option for the correction of hyperammonemia is the L-ornithine - L-aspartate (LOLA) preparation. The aim of the study was to investigate the manifestation of hyperammonemia in post - COVID syndrome and the possibility of its correction by using LOLA. Eighty-three patients (mean age 51.71 ± 12.82) with post-COVID syndrome, attention and memory impairment, chronic fatigue, hyperammonemia, 2-fold increase of alanine transaminase (ALT) and aspartate transaminase (AST) levels were included into multicenter, prospective observational study. L-ornithine-L-aspartate (LOLA) was given (3 g 3 times per day orally) for 4 weeks to correct hyperammonemia. Patients were accessed by the number connection test (NCT), fatigue evaluation test, measurement of ammonia and ALT, AST levels at baseline, and after 4 weeks. At week 4 the ammonia level was significantly decreased in 81 patients (97.6%). Time (sec) to complete the NCT was 49,43 ± 15,85 vs 64.67 ± 24.95 at baseline (p&lt;0.001). Before treatment, the majority of patients had stage 1 hepatic encephalopathy (HE) - 50.6% and stage 1-2 (intermediate) HE - 30.1%, stage 2 HE - 10.9%, stage 3 HE - 2.4%. After LOLA treatment, the distribution changed: 41% of patients had no HE, 36.1% had stage 1 of HE, 22.9% had stage 1-2 (intermediate) of HE, and stage 2 and 3 of HE was no longer defined. The mean score in fatigue evaluation test was 46,27 ± 10.0 vs 64,71 ± 19,18 at baseline (p&lt;0.001). ALT and AST levels were 47,83 ± 38,21 units/l vs 95,75 ± 68.99 units/l at baseline and 40,10 ± 35,97 units/l vs 78,51 ± 90,90 units/l at baseline respectively (p&lt;0.001). This study showed that the inclusion of LOLA in a dose of 3 g 3 times a day for 4 weeks was associated with significant improvement in the objective and subjective outcomes in patients with post-COVID syndrome.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>COVID-19</kwd><kwd>гипераммониемия</kwd><kwd>печеночная энцефалопатия</kwd><kwd>L-орнинитин - L-аспартат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>COVID-19</kwd><kwd>hyperammonemia</kwd><kwd>LOLA</kwd><kwd>liver encephalopathy</kwd><kwd>L-ornithine-L-aspartate</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">Khasanova D. R., Zhitkova S. V., Vaskayeva G. R. Postvoid syndrome: a review of knowledge on pathogenesis, neuropsychiatric manifestations and treatment perspectives. Neurology, neuropsychiatry, psychosomatics.2021;13(3):93-98. (In Russ) doi: 10.14412/2074-2711-2021-3-93-98.@@ Хасанова Д. Р., Житкова Ю. 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