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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">10.33380/2305-2066-2025-14-4-2077</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-2192</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>Изучение вопросов поддержания стабильности термочувствительных систем на основе полоксамеров при автоклавировании</article-title><trans-title-group xml:lang="en"><trans-title>Study of the issues of maintaining stability of poloxamer-based systems during autoclaving</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8695-0346</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бахрушина</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakhrushina</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119991, г. Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>8/2, Trubetskaya str., Mosсow, 119991</p></bio><email xlink:type="simple">bakhrushina_e_o@staff.sechenov.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/0009-0009-5123-066X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Афонина</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Afonina</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119991, г. Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>8/2, Trubetskaya str., Mosсow, 119991</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/0000-0003-2174-7157</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пыжов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pyzhov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119991, г. Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>8/2, Trubetskaya str., Mosсow, 119991</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/0000-0002-2866-0049</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михел</surname><given-names>И. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhel</surname><given-names>I. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119991, г. Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>8/2, Trubetskaya str., Mosсow, 119991</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Первый Московский государственный медицинский университет имени И. М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I. M. Sechenov First MSMU of the Ministry of Health of the Russian Federation (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>03</day><month>12</month><year>2025</year></pub-date><volume>14</volume><issue>4</issue><fpage>60</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бахрушина Е.О., Афонина А.М., Пыжов В.С., Михел И.Б., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Бахрушина Е.О., Афонина А.М., Пыжов В.С., Михел И.Б.</copyright-holder><copyright-holder xml:lang="en">Bakhrushina E.O., Afonina A.M., Pyzhov V.S., Mikhel I.B.</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/2192">https://www.pharmjournal.ru/jour/article/view/2192</self-uri><abstract><sec><title>Введение</title><p>Введение. Парентеральные и офтальмологические in-situ-системы должны быть стерильными. Выбор метода стерилизации – ключевой этап в разработке стерильных стимулочувствительных систем, так как неподходящий метод может привести к разрушению гелеобразующего полимера и активной субстанции и потере активности. К сожалению, стабильность термочувствительных систем на основе полоксамеров при стерилизации, а также способы их стабилизации с помощью протективных агентов изучены недостаточно.</p></sec><sec><title>Цель</title><p>Цель. Целью исследования было изучение стабильности систем на основе полоксамеров при автоклавировании, а также поиск и разработка методов их защиты от негативных последствий стерилизации.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В эксперименте использовали полоксамеры Kolliphor® P 407, Kolliphor® P 188, Kolliphor® P 338, Kollisolv® P 124 компании BASF (США), эмуксол-268, проксанол-168, предоставленные компанией АО «НИОПИК» (Россия). В качестве протективных агентов были выбраны динатриевая соль этилендиаминтетрауксусной кислоты (ЭДТА) (ООО ПКФ «ХимАвангард», Россия) и ксилит (ООО «Компания «Сладкий мир», Россия). Образцы автоклавировали при температуре 121 °C в течение 20 мин. Оценка стабильности проводилась по показателям: внешний вид, рН, кинематическая вязкость и температура фазового перехода.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Автоклавирование различных комбинаций полоксамеров оказало незначительное влияние на параметры стабильности составов. Добавление ЭДТА в высоких концентрациях приводило к увеличению вязкости, а также снижению рН и гелеобразующей способности составов. После стерилизации во всех образцах с ЭДТА наблюдалось образование осадка геля, однако в течение 5 дней исходный внешний вид составов восстанавливался. Остальные параметры оставались стабильными после автоклавирования. Добавление ксилита оказывало незначительное влияние на исходные показатели полоксамеров, и после стерилизации составы сохраняли стабильность.</p></sec><sec><title>Заключение</title><p>Заключение. Результаты проведенных экспериментов показали, что автоклавирование – подходящий метод для стерилизации систем на основе различных комбинаций полоксамеров. Следует избегать добавления ЭДТА, особенно в высоких концентрациях, из-за негативного влияния на ключевые параметры in-situ-систем и риска образования осадка при автоклавировании. Ксилит не нарушает стабильность полоксамеров при стерилизации. В то же время необходимы дальнейшие исследования для оценки потенциала ЭДТА и ксилита в качестве протективных агентов для стабилизации других стимулочувствительных систем.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Parenteral and ophthalmic in situ systems must be sterile. The selection of sterilization method is a key step in the development of sterile stimuli-sensitive systems, as an inappropriate method can lead to the degradation of the gel-forming polymer and the API, resulting in a loss of activity. Unfortunately, the stability of poloxamer-based thermosensitive systems during sterilization, as well as methods for their stabilization using protective agents, remains insufficiently studied.</p></sec><sec><title>Aim</title><p>Aim. The aim of the study was to investigate the stability of poloxamer-based systems during autoclaving and to develop methods for protecting them from the adverse effects of sterilization.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Poloxamers used in the experiment included Kolliphor® P 407, Kolliphor® P 188, Kolliphor® P 338, and Kollisolv® P 124 (BASF, USA), as well as Emuxol-268 and Proxanol-168, provided by JSC "NIOPIK" (Russia). Disodium salt of ethylenediaminetetraacetic acid (EDTA) (LLC PCF "KhimAvangard", Russia) and xylitol ("Sladkiy Mir" LTD, Russia) were selected as protective agents. The samples were autoclaved at 121 °C for 20 minutes. Stability was evaluated based on the following parameters: appearance, pH, kinematic viscosity, and sol-gel transition temperature.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. Autoclaving of various combinations of poloxamers had a negligible effect on the stability parameters of the formulations. The addition of EDTA at high concentrations led to an increase in viscosity, as well as a decrease in pH and gel-forming ability of the formulations. After sterilization, gel precipitation was observed in all samples containing EDTA, but the original appearance of the formulations was restored within 5 days. The other parameters remained stable after autoclaving. The addition of xylitol had a negligible effect on the initial properties of the poloxamers, and the formulations retained stability after sterilization.</p></sec><sec><title>Conclusion</title><p>Conclusion. The results of the experiments showed that autoclaving is a suitable method for sterilization of systems based on various combinations of poloxamers. The addition of EDTA, especially at high concentrations, should be avoided due to its negative impact on the key parameters of in situ systems and the risk of gel precipitation during autoclaving. Xylitol does not affect the stability of poloxamers during sterilization. However, further research is needed to evaluate the potential of EDTA and xylitol as protective agents for the stabilization of other stimuli-sensitive systems.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>полоксамер</kwd><kwd>автоклавирование</kwd><kwd>in-situ-системы</kwd><kwd>стерилизация</kwd><kwd>ЭДТА</kwd><kwd>ксилит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>poloxamer</kwd><kwd>autoclaving</kwd><kwd>in situ systems</kwd><kwd>sterilization</kwd><kwd>EDTA</kwd><kwd>xylitol</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">Kolawole O. M., Cook M. T. In situ gelling drug delivery systems for topical drug delivery. European Journal of Pharmaceutics and Biopharmaceutics. 2023;184:36–49. DOI: 10.1016/j.ejpb.2023.01.007.</mixed-citation><mixed-citation xml:lang="en">Kolawole O. M., Cook M. T. In situ gelling drug delivery systems for topical drug delivery. 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