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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">pharmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Разработка и регистрация лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Drug development &amp; registration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2305-2066</issn><issn pub-type="epub">2658-5049</issn><publisher><publisher-name>LLC «CPHA»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33380/2305-2066-2021-10-2-112-118</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-946</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>ДОКЛИНИЧЕСКИЕ И КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRECLINICAL AND CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Разработка методики одновременного определения прегнанового стероида с гестагенной активностью гестобутаноила и двух его метаболитов в сыворотке крови крыс</article-title><trans-title-group xml:lang="en"><trans-title>Development of Simultaneous Determination Method of a Pregnan Steroid with Gestagenic Activity – Gestobutanoil and Two its Metabolites in Rat Serum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2622-0434</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Степанова Елена Сергеевна</p><p>117198, г. Москва, ул. Миклухо-Маклая, д. 6</p></bio><bio xml:lang="en"><p>Elena S. Stepanova</p><p>6, Mikluho-Maklaya str., Moscow, 117198</p></bio><email xlink:type="simple">stepanova_25@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макаренкова</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarenkova</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Миклухо-Маклая, д. 6</p></bio><bio xml:lang="en"><p>Lyubov M. Makarenkova</p><p>6, Mikluho-Maklaya str., Moscow, 117198</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7625-9110</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горяинов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Goryainov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Миклухо-Маклая, д. 6</p></bio><bio xml:lang="en"><p>Sergey V. Goryainov</p><p>6, Mikluho-Maklaya str., Moscow, 117198</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4998-9991</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотчева</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotcheva</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117997, Россия, г. Москва, ул. Островитянова, д. 1</p></bio><bio xml:lang="en"><p>Tatiana A. Fedotcheva</p><p>1, Ostrovityanova str., Moscow, 117997</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8887-4420</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шимановский</surname><given-names>Н. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Shimanovsky</surname><given-names>N. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117997, Россия, г. Москва, ул. Островитянова, д. 1</p></bio><bio xml:lang="en"><p>Nikolay L. Shimanovsky</p><p>1, Ostrovityanova str., Moscow, 117997</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Российский университет дружбы народов» (Российский университет дружбы народов, РУДН)</institution></aff><aff xml:lang="en"><institution>Peoples Friendship University of Russia (RUDN University)</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Российский национальный исследовательский медицинский университет имени Н. И. Пирогова» Министерства здравоохранения Российской Федерации (ФГАОУ ВО РНИМУ им. Н. И. Пирогова МЗ РФ)</institution></aff><aff xml:lang="en"><institution>Pirogov Russian National Research Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>05</month><year>2021</year></pub-date><volume>10</volume><issue>2</issue><fpage>112</fpage><lpage>118</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Степанова Е.С., Макаренкова Л.М., Горяинов С.В., Федотчева Т.А., Шимановский Н.Л., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Степанова Е.С., Макаренкова Л.М., Горяинов С.В., Федотчева Т.А., Шимановский Н.Л.</copyright-holder><copyright-holder xml:lang="en">Stepanova E.S., Makarenkova L.M., Goryainov S.V., Fedotcheva T.A., Shimanovsky N.L.</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.pharmjournal.ru/jour/article/view/946">https://www.pharmjournal.ru/jour/article/view/946</self-uri><abstract><p>Введение. Гестобутаноил – синтетический прегнановый стероид с гестагенной активностью имеет два метаболита (АМОЛ и мегестрола ацетат), обладающих собственной фармакологической активностью. Из этого следует необходимость детального изучения кинетики метаболитов. Рационально объединить исследование фармакокинетики гестобутаноила и его метаболитов: АМОЛа и мегестрола ацетата. Одновременное определение нескольких аналитов в сыворотке крови экспериментальных животных (крыс) возможно осуществить при помощи современных аналитических методов хромато-масс-спектрометрии.Цель. Разработать аналитическую методику одновременного определения гестобутаноила и двух его метаболитов в биологической матрице (сыворотке крови крыс).Материалы и методы. Для определения гестобутаноила и двух его метаболитов в биологической матрице использовали следующие методы: ГХ-МС, ВЭЖХ-ESI-МС, ВЭЖХ-ESI-МС с дериватизацией аналитов, ВЭЖХ-APCI-МС.Результаты и обсуждение. При работе с ГХ-МС хроматографические пики гестобутаноила, АМОЛа и мегестрола ацетата сильно размывались и накладывались друг на друга, что, по-видимому, обусловлено термолабильностью веществ. От метода ГХ-МС отказались в пользу ВЭЖХ. Аналиты разделялись при помощи ВЭЖХ в градиентном режиме элюирования на колонке С18. Ионизация ESI не давала типичных протонированных ионов гестобутаноила и АМОЛа, а интенсивные сигналы их катионизированных ионов и ионов-фрагментов, которые наблюдались в спектрах АМОЛа и гестобутаноила, не могли обеспечить воспроизводимость спектров, поскольку условия их образования не подходят для рутинного анализа. Дериватизация аналитов с образованием оксимов и замещенных гидразонов не давала ожидаемых продуктов реакции для работы в ВЭЖХ-ESI-МС. APCI позволила убрать интенсивные катионизированные ионы из спектров гестобутаноила и АМОЛа и увеличить надежность метода. Методика ВЭЖХ-APCI-МС воспроизвелась на модельной сыворотке крови крыс.Заключение. Разработана ВЭЖХ-МС-методика одновременного определения гестобутаноила, мегестрола ацетата и АМОЛа. Методика апробирована на модельной сыворотке крови крыс, содержащей все три аналита.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. Gestobutanoil is a synthetic pregnane steroid with gestagenic activity. Gestobutanoil has two pharmacologically active metabolites (AMOL and megestrol acetate). This implies the need for a detailed study of the kinetics of metabolites. It is rational to combine the study of the pharmacokinetics of gestobutanoil and its metabolites (AMOL and megestrol acetate). The simultaneous determination of several analytes in the rats’ serum can be carried out using chromatography-mass-spectrometry.Aim. Development of an analytical method for the simultaneous determination of gestobutanoil and two its metabolites in a biomatrix (rat serum).Materials and methods. The following methods were used to determine gestobutanoyl and two its metabolites in a biological matrix: GC-MS, HPLCESI-MS, HPLC-ESI-MS with derivatization, HPLC-APCI-MS.Results and discussion. When working with GC-MS, the chromatographic peaks of gestobutanoyl, AMOL, and megestrol acetate were strongly blurred and superimposed on each other, which is apparently due to the thermolability of the substances. The GC-MS method was abandoned in favor of HPLC. Analytes were separated by HPLC gradient elution on a C18 column. ESI ionization did not give typical protonated ions of gestobutanoyl and AMOL, and the intense signals of their cationized ions and fragment ions, which were observed in the spectra of AMOL and gestobutanoyl, could not ensure the reproducibility of the spectra, since the conditions of their formation are not suitable for routine analysis. Derivatization of analytes to form oximes and substituted hydrazones did not give the expected reaction products for HPLC-ESI-MS. APCI made it possible to remove intense cationized ions from the spectra of gestobutanoyl and AMOL and to increase the reliability of the method. The HPLCAPCI-MS technique was reproduced on model rat blood serum.Conclusion. An HPLC-MS method was developed for the simultaneous determination of gestobutanoyl, megestrol acetate, and AMOL. The technique was tested on a model rat blood serum containing all three analytes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>прегнановые стероиды</kwd><kwd>гестагены</kwd><kwd>гестобутаноил</kwd><kwd>АМОЛ</kwd><kwd>мегестрол ацетат</kwd><kwd>ВЭЖХ-МС</kwd><kwd>химическая ионизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>progestins</kwd><kwd>gestagens</kwd><kwd>gestobutanoil</kwd><kwd>AMOL</kwd><kwd>megestrol acetate</kwd><kwd>HPLC-MS</kwd><kwd>chemical ionization</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РФФИ №19-015-00195.</funding-statement><funding-statement xml:lang="en">This work was supported by the RFBR grant No. 19-015-00195</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Fülöp I., Vari C.-E., Miklos A., Imre S. 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