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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">10.33380/2305-2066-2025-14-2-2055</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-2098</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>ФАРМАЦЕВТИЧЕСКАЯ ТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACEUTICAL TECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Влияние на высвобождение размера частиц твердых дисперсных систем при проведении теста «Растворение»</article-title><trans-title-group xml:lang="en"><trans-title>Effect of particle size on release of solid dispersed particles during the "Dissolution" test</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1852-7615</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Золотов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>109316, г. Москва, Волгоградский проспект, д. 42, корп. 24</p></bio><bio xml:lang="en"><p>42/24, Volgogradsky prospekt, Moscow, 109316</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/0000-0002-1603-143X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Panov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119571, г. Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>86, prospekt Vernadskogo, Moscow, 119571</p></bio><email xlink:type="simple">panov@mirea.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Общество с ограниченной ответственностью «АМЕДАРТ»</institution></aff><aff xml:lang="en"><institution>Limited Liability Company "AMEDART"</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «МИРЭА – Российский технологический университет» (РТУ МИРЭА)</institution></aff><aff xml:lang="en"><institution>MIREA – Russian Technological University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>06</month><year>2025</year></pub-date><volume>14</volume><issue>2</issue><fpage>149</fpage><lpage>155</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Золотов С.А., Панов А.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Золотов С.А., Панов А.В.</copyright-holder><copyright-holder xml:lang="en">Zolotov S.A., Panov A.V.</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/2098">https://www.pharmjournal.ru/jour/article/view/2098</self-uri><abstract><sec><title>Введение</title><p>Введение. Применение метода твердых дисперсных систем для увеличения растворимости липофильных активных фармацевтических субстанций является промышленно применимым при использовании разных технологий, но в литературных источниках недостаточно отражено влияние размера частиц на растворение данных систем в зависимости от метода.</p></sec><sec><title>Цель</title><p>Цель. Изучение влияния размера частиц аморфных твердых дисперсных систем «дарунавир – водорастворимый полимер», полученных методами удаления растворителя и экструзии горячего расплава, на растворение дарунавира в биологическом интервале рН 1,2; 4,5 и 6,8.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Аморфные твердые дисперсные системы получены двумя способами: удалением растворителя и экструзией горячего расплава. Аморфность определена методами рентгеновской порошковой дифракции и электронной микроскопией. Эффективность дисперсных систем сравнивали по результатам теста «Растворение» порошков, механически измельченных до одинакового размера частиц, в биологическом интервале рН. Концентрация дарунавира в растворе определена с помощью высокоэффективной жидкостной хроматографии с детектированием на диодной матрице.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Наилучший результат показала твердая дисперсная система на основе полимера Eudragit® E PO с размером частиц D90 менее 10 мкм. Увеличение концентрации дарунавира относительно кристаллической формы, соответствующей дарунавира этанолату, составило в средах растворения с рН 1,2; 4,5 и 6,8 соответственно 324, 2485 и 740 %.</p></sec><sec><title>Заключение</title><p>Заключение. Способы получения твердых дисперсных систем, такие как удаление растворителя и экструзия горячего расплава, при одинаковом размере частиц не оказывают влияние на концентрацию АФС дарунавира в растворе в биологическом интервале рН при проведении теста «Растворение».</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The use of the solid disperse systems method to increase the solubility of lipophilic active pharmaceutical ingredients is industrially applicable using different technologies, but the influence of particle size on the dissolution of these systems, depending on the method, is not sufficiently reflected in the literature.</p></sec><sec><title>Aim</title><p>Aim. To study the influence of the particle size of amorphous solid disperse systems "darunavir-water-soluble polymer" obtained by solvent removal and hot melt extrusion on the dissolution of Darunavir in the biological pH range of 1.2; 4.5 and 6.8.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Amorphous solid disperse systems were obtained in two ways: solvent removal and hot melt extrusion. Amorphism was determined by X-ray powder diffraction and electron microscopy. The efficiency of disperse systems was compared based on the results of the "Dissolution" test of powders mechanically ground to the same particle size in the biological pH range. The concentration of Darunavir in solution was determined using high-performance liquid chromatography with diode array detection.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. The best result was shown by a solid dispersion system based on the Eudragit® E PO polymer with a particle size D90 of less than 10 μm. The increase in the concentration of Darunavir relative to the crystalline form corresponding to Darunavir ethanolate was 324, 2485, and 740%, respectively, in dissolution media with pH 1.2; 4.5, and 6.8.</p></sec><sec><title>Conclusions</title><p>Conclusions. Methods for obtaining solid dispersion systems, such as solvent removal and hot melt extrusion with the same particle size, do not affect the concentration of the Darunavir API in solution in the biological pH range during the Dissolution test.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дарунавир</kwd><kwd>твердые дисперсии</kwd><kwd>тест «Растворение»</kwd><kwd>аморфность</kwd><kwd>микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>darunavir</kwd><kwd>solid dispersions</kwd><kwd>Dissolution test</kwd><kwd>amorphousness</kwd><kwd>microscopy</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">Lobo S. Is there enough focus on lipophilicity in drug discovery? Expert Opinion on Drug Discovery. 2020;15(3):261–263. DOI: 10.1080/17460441.2020.1691995.</mixed-citation><mixed-citation xml:lang="en">Lobo S. 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