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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">phkinetica</journal-id><journal-title-group><journal-title xml:lang="ru">Фармакокинетика и Фармакодинамика</journal-title><trans-title-group xml:lang="en"><trans-title>Pharmacokinetics and Pharmacodynamics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-7836</issn><issn pub-type="epub">2686-8830</issn><publisher><publisher-name>ООО «Издательство ОКИ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/2587-7836-2021-1-45-51</article-id><article-id custom-type="elpub" pub-id-type="custom">phkinetica-271</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>МЕТОДЫ ОПРЕДЕЛЕНИЯ ЛЕКАРСТВЕННЫХ СРЕДСТВ В БИОМАТЕРИАЛЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODS FOR DETERMINATION OF DRUGS IN BIOLOGICAL MATERIAL</subject></subj-group></article-categories><title-group><article-title>Разработка и валидация методики количественного определения метотрексата в транспортной среде методом ВЭЖХ-МC/МС</article-title><trans-title-group xml:lang="en"><trans-title>Development and validation of the method for the quantitative determination of methotrexate in a transport medium by HPLC-MS/MS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7829-2494</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мыльников</surname><given-names>П. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Mylnikov</surname><given-names>P. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мыльников Павел Юрьевич, ассистент кафедры фармакологии с курсом фармации факультета дополнительного профессионального образования</p><p>SPIN-код: 8503-3082</p><p>Рязань </p></bio><bio xml:lang="en"><p>Mylnikov Pavel Yu., assistant of the Department of Pharmacology with the course of Pharmacy of the Faculty of Additional Professional Education</p><p>SPIN code: 8503-3082</p><p>Ryazan </p></bio><email xlink:type="simple">dukeviperlr@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/0000-0001-5068-1201</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Транова</surname><given-names>Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Tranova</surname><given-names>Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Транова Юлия, очный аспирант кафедры фармакологии с курсом фармации факультета дополнительного профессионального образования </p><p>Рязань </p></bio><bio xml:lang="en"><p>Tranova Julia, full-time postgraduate student of the Department of Pharmacology with the course of Pharmacy of the Faculty of Additional Professional Education</p><p>Ryazan </p></bio><email xlink:type="simple">yulyatran@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/0000-0003-1688-0017</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щулькин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchulkin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щулькин Алексей Владимирович, д. м. н., профессор, доцент кафедры фармакологии с курсом фармации факультета дополнительного профессионального образования</p><p>SPIN-код: 2754-1702</p><p>Рязань </p></bio><bio xml:lang="en"><p>Shchulkin Alexey V., Dr. Sci. (Med.), Professor, associate Professor of the Department of Pharmacology with the course of Pharmacy of the Faculty of Additional Professional Education</p><p>SPIN code: 2754-1702</p><p>Ryazan </p></bio><email xlink:type="simple">alekseyshulkin@rambler.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/0000-0001-6887-4888</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якушева</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakusheva</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Якушева Елена Николаевна, д. м. н., профессор, зав. кафедрой фармакологии с курсом фармации факультета дополнительного профессионального образования</p><p>SPIN-код: 2865-3080</p><p>Рязань </p></bio><bio xml:lang="en"><p>Yakusheva Elena N., Dr. Sci. (Med.), Professor, Head of the Department of Pharmacology with the course of Pharmacy of the Faculty of Additional Professional Education</p><p>SPIN code: 2865-3080</p><p>Ryazan </p></bio><email xlink:type="simple">e.yakusheva@rzgmu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Рязанский государственный медицинский университет имени академика И.П. Павлова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBEI HE "I.P. Pavlov Ryazan State Medical University" of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2021</year></pub-date><volume>0</volume><issue>1</issue><fpage>45</fpage><lpage>51</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мыльников П.Ю., Транова Ю., Щулькин А.В., Якушева Е.Н., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Мыльников П.Ю., Транова Ю., Щулькин А.В., Якушева Е.Н.</copyright-holder><copyright-holder xml:lang="en">Mylnikov P.Y., Tranova Y., Shchulkin A.V., Yakusheva E.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.pharmacokinetica.ru/jour/article/view/271">https://www.pharmacokinetica.ru/jour/article/view/271</self-uri><abstract><p>Актуальность. BCRP – эффлюксный белок-транспортёр, играющий важную роль в фармакокинетике широкого спектра лекарственных веществ. Активность BCRP в опытах in vitro оценивается по транспорту субстратов белка-транспортёра (метотрексата и др.) через билипидную мембрану клеток, гиперэкспрессирующих BCRP, например, клетках линии Caco-2. Цель: разработать и валидировать методику количественного определения субстрата BCRP – метотрексата в транспортной среде клеток линии Caco-2 методом ВЭЖХ-МС/МС. Методы исследования. Работа выполнена на ВЭЖХ-хроматографе «Ultimate 3000» («ThermoFisher», США) с тандемным масс-селективным детектором TSQ Fortis («ThermoFisher», США). Условия хроматографического анализа были следующими: колонка UCT Selectra C18 4,6 mm ×100 mm 5um, 100A, предколонка Selectra C18 Guard Cartridges SLC-18GDC46-5UM, температура разделения – 35 °С, скорость потока – 0,3 мл/мин, объём вводимой пробы – 2 мкл, время анализа – 10 мин. Использовали градиентный режим элюирования: соотношение раствора 0,1 % муравьиной кислоты и ацетонитрила составило на 0 мин 75 и 25 %; 0,4 мин – 60 и 40 %; 6 мин – 20 и 80 %; 8 мин – 75 и 25 %. В данных условиях время удерживания метотрексата – 3,11 мин. Условия детектирования: метотрексат – положительный режим ионизации, 455,15 m/z → 308,125 m/z, энергия столкновения – 22,99 В, фрагментация источника – 5, давление CID-газа – 2 мТорр. Извлечение метотрексата из транспортной среды (раствор Хэнкса с 25 мМ Хепес и 1 % диметилсульфоксида) после инкубирования с клетками линии Сaco-2 в течение 3 ч осуществляли смесью метанол+вода в соотношении 1:1. Результаты. Разработанная методика была валидирована по следующим параметрам: селективность, линейность, точность, прецизионность, предел количественного определения, перенос пробы, стабильность образцов. Подтверждённый аналитический диапазон методики составил 60–10 000 нмоль/л в транспортной среде. Выводы: разработана и валидирована методика количественного определения метотрексата в транспортной среде клеток линии Caco-2 методом ВЭЖХ-МС/МС.</p></abstract><trans-abstract xml:lang="en"><p>Relevance. BCRP is an efflux transporter protein that plays an important role in the pharmacokinetics of a wide range of drugs. The BCRP activity in vitro experiments is assessed by the transport of transporter protein substrates (methotrexate, etc.) across the bilipid membrane of cells overexpressingBCRP, for example, Caco-2 cells. The aim is to develop and validate a method for the quantitative determination of the BCRP substrate, methotrexate, in the transport medium of Caco-2 cells by HPLC-MS/MS. Methods. The work was performed on an Ultimate 3000 HPLC chromatograph (ThermoFisher, USA) with a TSQ Fortis tandem mass-selective detector (ThermoFisher, USA). The conditions of chromatographic analysis were as follows: column UCT Selectra C18 4.6 mm * 100 mm 5um, 100A, Selectra C18 Guard Cartridges SLC-18GDC46-5UM, separation temperature 35 °С, flow rate 0.3 ml/min, injected sample volume - 2 μl, analysis time - 10 min. Used a gradient elution: the ratio of the solution of 0.1 % formic acid and acetonitrile was at 0 min 75 and 25 %; 0.4 min 60 and 40 %; 6 minutes 20 and 80 %; 8 minutes 75 and 25 %. Under these conditions, the retention time of methotrexate is 3.11 minutes. Detection conditions: methotrexate - positive ionization mode, 455.15 m / z → 308.125 m / z, collision energy 22.99 V, source fragmentation 5, CID gas pressure 2 mTorr. The extraction of methotrexate from the transport medium (Hanks solution with 25 mM Hepes and 1% dimethyl sulfoxide) after incubation with Caco-2 cells for 3 h was carried out with a mixture of methanol + water in a ratio of 1: 1. Results. The developed method was validated according to the following parameters: selectivity, linearity, accuracy, precision, limit of quantitative determination, sample transfer, sample stability. The confirmed analytical range of the method was 60 -10,000 nmol / L in the transport medium. Conclusions: a method for the quantitative determination of methotrexate in the transport medium of Caco-2 cells by HPLC-MS / MS was developed and validated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метотрексат</kwd><kwd>ВЭЖХ-МС/МС</kwd><kwd>клетки линии Caco-2</kwd><kwd>BCRP</kwd></kwd-group><kwd-group xml:lang="en"><kwd>methotrexate</kwd><kwd>HPLC-MS/MS</kwd><kwd>Caco-2 cells</kwd><kwd>BCRP</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">Doyle LA, Yang W, Abruzzo LV, Krogmann T, Gao Y, Rishi AK, Ross DD. A multidrug resistance transporter from human MCF-7 breast cancer cells. 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