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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">medalphabet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский алфавит</journal-title><trans-title-group xml:lang="en"><trans-title>Medical alphabet</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2078-5631</issn><issn pub-type="epub">2949-2807</issn><publisher><publisher-name>ООО «Альфмед»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33667/2078-5631-2021-33-35-37</article-id><article-id custom-type="elpub" pub-id-type="custom">medalphabet-2323</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>РЕВМАТОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RHEUMATOLOGY</subject></subj-group></article-categories><title-group><article-title>Изменение концентрации полиглутаматов метотрексата у пациентов с ревматоидным артритом в ходе лечения и после отмены (анализ двух случаев)</article-title><trans-title-group xml:lang="en"><trans-title>Changes in methotrexate polyglutamate concentration in patients with rheumatoid arthritis during treatment and after discontinuation (review of two cases)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0928-3911</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гриднева</surname><given-names>Г. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gridneva</surname><given-names>G. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гриднева Галина Игоревна, к. м. н., н. с. лаборатории изучения коморбидных инфекций и мониторинга безопасности лекарственной терапии</p><p>Москва</p></bio><bio xml:lang="en"><p>Gridneva Galina I., PhD Med, researcher, Laboratory for the Study of Comorbid Infections and Monitoring the Safety of Drug Therapy</p><p>Moscow</p></bio><email xlink:type="simple">gigridneva@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/0000-0002-1833-5357</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аронова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Aronova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аронова Евгения Сергеевна, к. м. н., н. с. лаборатории изучения коморбидных инфекций и мониторинга безопасности лекарственной терапии</p><p>Москва</p></bio><bio xml:lang="en"><p>Aronova Evgeniya S., PhD Med, researcher, Laboratory for the Study of Comorbid Infections and Monitoring the Safety of Drug Therapy</p><p>Moscow</p></bio><email xlink:type="simple">eugpozd@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/0000-0001-7501-9185</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самаркина</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Samarkina</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самаркина Елена Юрьевна, м. н. с. лаборатории иммунологии и молекулярной биологии ревматических заболеваний</p><p>Москва</p></bio><bio xml:lang="en"><p>Samarkina Elena Yu., junior researcher, Laboratory of Immunology and Molecular Biology of Rheumatic Diseases</p><p>Moscow</p></bio><email xlink:type="simple">samarkinale@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт ревматологии имени В. А. Насоновой»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V. A. Nasonova Research Institute of Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>13</day><month>12</month><year>2021</year></pub-date><volume>0</volume><issue>33</issue><issue-title>Ревматология в общей врачебной практике (2)</issue-title><fpage>35</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гриднева Г.И., Аронова Е.С., Самаркина Е.Ю., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Гриднева Г.И., Аронова Е.С., Самаркина Е.Ю.</copyright-holder><copyright-holder xml:lang="en">Gridneva G.I., Aronova E.S., Samarkina E.Y.</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.med-alphabet.com/jour/article/view/2323">https://www.med-alphabet.com/jour/article/view/2323</self-uri><abstract><sec><title>Введение</title><p>Введение. Динамика изменения концентрации полиглутаматов метотрексата (МТПГ) за последние 20 лет изучалась несколькими научными группами с использованием различных методов. По ряду причин результаты этих работ нельзя назвать однородными и уверенно проецировать на российскую популяцию больных ревматоидным артритом (РА). При этом терапевтический лекарственный мониторинг метотрексата (МТ) с четко определенными целевыми значениями метаболитов мог бы являться крайне полезным инструментом в рутинной клинической практике.</p></sec><sec><title>Цель исследования</title><p>Цель исследования. Охарактеризовать концентрацию МТПГ в динамике на фоне лечения и через 12 недель после отмены МТ.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Двое больных ранним РА прослежены через 4, 12, 24 недели после назначения МТ, а также через 12 недель после его отмены вследствие появившейся на фоне лечения тошноты. На каждом визите производился анализ на содержание МТПГ методом тандемной хромато-масс-спектрометрии.</p></sec><sec><title>Результаты</title><p>Результаты. На фоне лечения значительно преобладающим метаболитом являлись МТПГ с тремя и четырьмя остатками глутаминовой кислоты (так называемые длинноцепочечные), тогда как через 12 недель после отмены преимущественной фракцией являлся МТПГ 2.</p></sec><sec><title>Выводы</title><p>Выводы. Низкие значения МТПГ 3 и МТПГ 4 при высоких значениях МТПГ 2 могут свидетельствовать о недавнем начале лечения или об отмене МТ в пределах ближайших 3 месяцев. При возникновении субъективных нежелательных реакций (НР) целесообразно рассмотреть возможность переключения на лекарственный аналог другого производителя</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The dynamics of changes in the concentration of polyglutamates of methotrexate (MTPG) over the past 20 years has been studied by several scientifc groups using various methods. For a number of reasons, the results of these studies cannot be called uniform and cannot be confdently projected onto the Russian population of patients with rheumatoid arthritis (RA). At the same time, therapeutic drug monitoring of methotrexate (MT) with clearly defned target values of metabolites could be an extremely useful tool in routine clinical practice.</p></sec><sec><title>Purpose of the study</title><p>Purpose of the study. To characterize the concentration of MTPG in dynamics during treatment and 12 weeks after discontinuation of MT.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Two patients with early RA were traced 4, 12, 24 weeks after MT appointment, and also 12 weeks after its cancellation due to nausea that appeared during treatment. At each visit, an analysis was made for MTPG content by tandem gas chromatography-mass spectrometry.</p></sec><sec><title>Results</title><p>Results. Against the background of treatment, the signifcantly predominant metabolite was MTPG with three and gour residues of glutamic acid (the so-called long-chain), while 12 weeks after discontinuation, MTPG 2 was the predominant fraction.</p></sec><sec><title>Conclusions</title><p>Conclusions. Low values of MTPG 3 and MTPG 4 with high values of MTPG 2 may indicate a recent initiation of treatment or MTB cancellation within the next 3 months. In the event of subjective adverse reactions (ADRs), it is advisable to consider the possibility of switching to a drug analogue of another manufacturer.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>терапевтический лекарственный мониторинг</kwd><kwd>метотрексат</kwd><kwd>ревматоидный артрит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>therapeutic drug monitoring</kwd><kwd>methotrexate</kwd><kwd>rheumatoid arthritis</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">Насонов Е.Л. Фармакотерапия ревматоидного артрита: российские и международные рекомендации. Научно-практическая ревматология. 2016; 54 (5): 557–571. https://doi.org/10.14412/1995–4484–2016–557–571</mixed-citation><mixed-citation xml:lang="en">E.L. Nasonov Pharmacotherapy of rheumatoid arthritis: Russian and international recommendations. 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