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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">10.33380/2305-2066-2024-13-1-1538</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-1735</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>Исследование динамики высвобождения дифлунизала из полимерной матрицы</article-title><trans-title-group xml:lang="en"><trans-title>Study of the Dynamics of Diflunisal Release from a Polymer Matrix</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3806-6585</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлова</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mihajlova</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, ул. Профессора Попова, д. 14, лит. А;</p><p>197101, г. Санкт-Петербург, Кронверкский пр., д. 49, лит. А</p></bio><bio xml:lang="en"><p>14A, Prof. Popova str., Saint-Petersburg, 197022;</p><p>49A, Kronverksky prospekt, Saint-Petersburg, 197101</p></bio><email xlink:type="simple">mikhaylova@scamt-itmo.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/0009-0002-5230-8106</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адамова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Adamova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, ул. Профессора Попова, д. 14, лит. А;</p><p>199034, г. Санкт-Петербург, Университетская наб., д. 7–9</p></bio><bio xml:lang="en"><p>14A, Prof. Popova str., Saint-Petersburg, 197022;</p><p>7–9, Universitetskaya naberezhnaya, Saint-Petersburg, 199034</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/0000-0002-2573-6036</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Генералова</surname><given-names>Ю. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Generalova</surname><given-names>Yu. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, ул. Профессора Попова, д. 14, лит. А; 197101, г. Санкт-Петербург, Кронверкский пр., д. 49, лит. А</p></bio><bio xml:lang="en"><p>14A, Prof. Popova str., Saint-Petersburg, 197022;</p><p>49A, Kronverksky prospekt, Saint-Petersburg, 197101</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/0000-0001-9949-5709</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Снетков</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Snetkov</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197101, г. Санкт-Петербург, Кронверкский пр., д. 49, лит. А;</p><p>191036, г. Санкт-Петербург, Лиговский пр., д. 2–4</p></bio><bio xml:lang="en"><p>49A, Kronverksky prospekt, Saint-Petersburg, 197101;</p><p>2–4, Ligovsky ave., Saint-Petersburg, 191036</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0122-0251</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозкина</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozkina</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197101, г. Санкт-Петербург, Кронверкский пр., д. 49, лит. А;</p><p>191036, г. Санкт-Петербург, Лиговский пр., д. 2–4</p></bio><bio xml:lang="en"><p>49A, Kronverksky prospekt, Saint-Petersburg, 197101;</p><p>2–4, Ligovsky ave., Saint-Petersburg, 191036</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский государственный химико-фармацевтический университет» Министерства здравоохранения Российской Федерации (ФГБОУ ВО СПХФУ Минздрава России); Федеральное государственное автономное образовательное учреждение высшего образования «Национальный исследовательский университет ИТМО»<country>Россия</country></aff><aff xml:lang="en">Saint-Petersburg State Chemical and Pharmaceutical University; ITMO University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский государственный химико-фармацевтический университет» Министерства здравоохранения Российской Федерации (ФГБОУ ВО СПХФУ Минздрава России); Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский государственный университет» (СПбГУ)<country>Россия</country></aff><aff xml:lang="en">Saint-Petersburg State Chemical and Pharmaceutical University; Saint Petersburg State University, SPbU<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Федеральное государственное автономное образовательное учреждение высшего образования «Национальный исследовательский университет ИТМО»; Федеральное государственное бюджетное учреждение «Санкт-Петербургский научно-исследовательский институт фтизиопульмонологии» Министерства здравоохранения Российской Федерации (ФГБУ «СПб НИИФ» Минздрава России)<country>Россия</country></aff><aff xml:lang="en">ITMO University; Saint-Petersburg State Research Institute of Phthisiopulmonology of the Ministry of Healthcare of the Russian Federation<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>29</day><month>01</month><year>2024</year></pub-date><volume>13</volume><issue>1</issue><fpage>75</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Михайлова П.А., Адамова А.А., Генералова Ю.Э., Снетков П.П., Морозкина С.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Михайлова П.А., Адамова А.А., Генералова Ю.Э., Снетков П.П., Морозкина С.Н.</copyright-holder><copyright-holder xml:lang="en">Mihajlova P.A., Adamova A.A., Generalova Y.E., Snetkov P.P., Morozkina S.N.</copyright-holder><license 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/1735">https://www.pharmjournal.ru/jour/article/view/1735</self-uri><abstract><sec><title>Введение</title><p>Введение. Клинически доказана эффективность дифлунизала при лечении амилоидоза сердца. В настоящее время в мире зарегистрированы только таблетированные формы дифлунизала, однако длительное применение НПВП приводит к характерным побочным эффектам. Поэтому сейчас активно разрабатываются системы доставки дифлунизала (в том числе формы для наружного применения), позволяющие уменьшить побочные эффекты, улучшить его биодоступность.</p></sec><sec><title>Цель</title><p>Цель. Изучение динамики высвобождения действующего вещества дифлунизала из полимерной матрицы гиалуроновой кислоты.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Объектами исследования являются гели дифлунизала в гиалуроновой кислоте с концентрацией основного вещества 0,093, 0,14, 0,19 и 0,25 %. Количественное определение проводили методом обращенно-фазовой ВЭЖХ с использованием хроматографической колонки Prontosil С18,120-5, 75 × 2 мм, термостатируемой при 40 °С. Элюент: фосфатный буферный раствор с рН 3,0 и ацетонитрил (30 : 70), скорость потока 0,1 мл/мин. Детектировали элюаты на длинах волн 230, 270, 310 нм.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Разработана методика определения дифлунизала в матрице гиалуроновой кислоты методом ВЭЖХ. Высвобождение действующего вещества из матриц проводили в среде фосфатного буферного раствора с рН 7,6. Исследуемая система доставки значительно увеличивает растворимость дифлунизала в водном растворе по сравнению с растворением субстанции. Степень высвобождения для всех образцов превышает 90 % через 3 часа после начала эксперимента, при этом большая часть действующего вещества высвобождается в течение часа.</p></sec><sec><title>Заключение</title><p>Заключение. Полученные данные позволяют утверждать, что профиль высвобождения характерен для биодеградируемых матриц и диффузионно-контролируемых систем доставки. Достигнута полнота извлечения дифлунизала из ГК при использовании в качестве среды растворения ФБР с рН 7,6.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The effectiveness of diflunisal in the treatment of cardiac amyloidosis has been clinically proven. Currently, only tablet forms of diflunisal are registered in the world, however, long-term use of NSAIDs leads to characteristic side effects. Therefore, delivery systems for diflunisal (including a form for external use) are now being actively developed to reduce side effects and improve its bioavailability.</p></sec><sec><title>Aim</title><p>Aim. Research of the dynamics of release of the active substance diflunisal from the polymer matrix of hyaluronic acid.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The objects of the study are diflunisal gels in hyaluronic acid with a concentration of the main substance of 0.093, 0.14, 0.19 and 0.25 %. Quantitative determination was carried out by reverse-phase HPLC using a Prontosil C18, 120-5, 75 × 2 mm chromatographic column, thermostatically controlled at 40 °C. Eluent: phosphate buffer solution (PBS) with pH 3.0 and acetonitrile (30 : 70), flow rate 0.1 ml/min. Eluates were detected at wavelengths of 230, 270, 310 nm.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. During the work, a method (HPLC) was selected and a method for determining diflunisal in a HA matrix was developed. The delivery system under study significantly increases the solubility of diflunisal in an aqueous solution compared to the dissolution of the substance. The release of the active substance from the matrices was carried out in a phosphate buffer solution with pH 7.6. The release rate for all samples exceeded 90 % after 3 hours after the start of the experiment, with most of the active substance released within an hour.</p></sec><sec><title>Conclusion</title><p>Conclusion. The data obtained suggest that the release profile is characteristic of biodegradable matrices and diffusion-controlled delivery systems. Complete extraction of diflunisal from HA was achieved using PBS with pH 7.6 as a dissolution medium.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэффективная жидкостная хроматография</kwd><kwd>дифлунизал</kwd><kwd>гиалуроновая кислота</kwd><kwd>полимерная матрица</kwd><kwd>высвобождение</kwd><kwd>система доставки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>high performance liquid chromatography</kwd><kwd>diflunisal</kwd><kwd>hyaluronic acid</kwd><kwd>polymer matrix</kwd><kwd>release</kwd><kwd>delivery system</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена за счет гранта Российского научного фонда (проект № 21-74-20093). Ссылка на информацию о проекте: https://rscf.ru/en/project/21-74-20093/</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The work was completed by the grant of the Russian Science Foundation (project № 21-74-20093). Link to project information: https://rscf.ru/en/project/21-74-20093/</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">Kopishinskaia S. V. Transthyretin familial amyloid polyneuropathy. Journal of Neurology and Psychiatry of S. S. Korsakov. 2018;118(10):82–89. (In Russ.) DOI: 10.17116/jnevro201811810182.</mixed-citation><mixed-citation xml:lang="en">Kopishinskaia S. V. Transthyretin familial amyloid polyneuropathy. Journal of Neurology and Psychiatry of S. S. Korsakov. 2018;118(10):82–89. (In Russ.) 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