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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">vguit</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Воронежского государственного университета инженерных технологий</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Voronezh State University of Engineering Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-910X</issn><issn pub-type="epub">2310-1202</issn><publisher><publisher-name>VSUET</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20914/2310-1202-2023-4-70-75</article-id><article-id custom-type="elpub" pub-id-type="custom">vguit-3375</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>Пищевая  биотехнология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Food biotechnology</subject></subj-group></article-categories><title-group><article-title>Изучение высвобождения рилпивирина из in situ формирующихся полимерных имплантатов в буферном растворе и в гелевом фантоме, имитирующем мышечную ткань</article-title><trans-title-group xml:lang="en"><trans-title>In vitro release studies of rilpivirine from in situ forming polymeric implants in buffer solution and in a gel phantom of muscle tissue</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5400-0853</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ульянова</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ulianova</surname><given-names>Y. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., ассистент, кафедра химии и технологии биомедицинских препаратов, Миусская площадь 9, г. Москва, 125047, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), assistant, chemistry and technology of biomedical preparations department, Miusskaya square 9, Moscow, 125047, Russia</p></bio><email xlink:type="simple">ulianova.i.v@muctr.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/0000-0003-3966-3066</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермоленко</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermolenko</surname><given-names>Y. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., доцент, кафедра химии и технологии биомедицинских препаратов, Миусская площадь 9, г. Москва, 125047, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), associate professor, chemistry and technology of biomedical preparations department, Miusskaya square 9, Moscow, 125047, Russia</p></bio><email xlink:type="simple">uve2007@ya.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/0000-0003-4195-2609</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ванчугова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vanchugova</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., ведущий научный сотрудник, лаборатория химии полиэлектролитов и медико-биологических полимеров, Ленинский пр. 29, г. Москва, 119991, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), leading researcher, laboratory of chemistry of polyelectrolytes and biomedical polymers, Leninsky prospect 29, Moscow, 119991, Russia</p></bio><email xlink:type="simple">vanchugowa.lyudmila@ya.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2230-6177</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Митюков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mityukov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., младший научный сотрудник, лаборатория реологии полимеров, Ленинский пр. 29, г. Москва, 119991, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), junior researcher, laboratory of polymer rheology, Leninsky prospect 29, Moscow, 119991, Russia</p></bio><email xlink:type="simple">antmtk@ips.ac.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1113-6715</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гельперина</surname><given-names>С. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Gelperina</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор, кафедра химии и технологии биомедицинских препаратов, Миусская площадь 9, г. Москва, 125047, Россия</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chem.), professor, chemistry and technology of biomedical preparations department, Miusskaya square 9, Moscow, 125047, Russia</p></bio><email xlink:type="simple">svetlana.gelperina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский химико-технологический университет им. Д.И. Менделеева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>D. Mendeleev University of Chemical Technology of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт нефтехимического синтеза им. А.В. Топчиева Российской академии наук</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>15</day><month>01</month><year>2024</year></pub-date><volume>85</volume><issue>4</issue><fpage>70</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ульянова Ю.В., Ермоленко Ю.В., Ванчугова Л.В., Митюков А.В., Гельперина С.Э., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ульянова Ю.В., Ермоленко Ю.В., Ванчугова Л.В., Митюков А.В., Гельперина С.Э.</copyright-holder><copyright-holder xml:lang="en">Ulianova Y.V., Ermolenko Y.V., Vanchugova L.V., Mityukov A.V., Gelperina S.E.</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.vestnik-vsuet.ru/vguit/article/view/3375">https://www.vestnik-vsuet.ru/vguit/article/view/3375</self-uri><abstract><p>Разработка in situ формирующихся имплантатов на основе сополимеров молочной и гликолевой кислот (СМГК) является одним из наиболее перспективных подходов при создании инъекционных лекарственных форм длительного действия. При этом, для оценки скорости высвобождения лекарственного вещества из таких депо-форм требуются методы, которые способны наиболее точно моделировать условия in vivo. Гелевые фантомы, имитирующие эластичные свойства мышечной ткани, могут стать многообещающей альтернативой традиционным методам изучения высвобождения, использующим в качестве среды физиологически значимые буферные растворы. Так, целью исследования был выбор оптимального состава гидрогеля, подходящего для использования в качестве фантома, и оценка влияния фантомной матрицы на скорость высвобождения рилпивирина, используемого в качестве модельного вещества, из СМГК in situ имплантатов. По результатам исследования установлено, что для получения тканевого фантома и формирования в нем имплантата лучше всего подходил 1 % агарозный гель. Также было показано, что профиль высвобождения рилпивирина из in situ формирующихся имплантатов зависел от того, каким образом был сформирован имплантат (в геле или свободно в буфере). В случае формирования имплантата в гидрогелевом фантоме структура имплантата была менее пористой и сохраняла форму в течение 28 дней инкубации при 37 °С. В течение этого периода имплантат, сформированный в агарозном геле, высвобождал значительно меньшее количество рилпивирина по сравнению с имплантатом, сформированным без геля (11 % против 80 % рилпивирина).</p></abstract><trans-abstract xml:lang="en"><p>Development of in situ forming implants (ISFI) based on PLGA polymers is one of the most promising approaches to long-acting injectables. Evaluation of the drug release rate from such depot formulations requires methods that most closely simulate in vivo conditions. Gel phantoms mimic the elastic properties of muscle tissue and appear to be a promising replacement for conventional methods using physiologically relevant buffer solutions. Accordingly, the aim of the study was to select the optimal composition for the gel phantom formation and evaluate the effect of the phantom matrix on the release rate of rilpivirin used as a model drug from the PLGA ISFI. According to the results of the study, a 1% agarose gel was the best suited for a tissue phantom preparation and implant formation. It was also shown that the release profile of rilpivirin from the ISFI matrix depended on how the implant was formed (in a gel or freely in buffer). In the case of a phantom, the structure of the implant was less porous and retained its shape for 28 days of incubation at 37 °C. During this period, the ISFI formed in an agarose gel released considerably less rilpivirin compared to the ISFI formed without gel (11% vs 80%).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>in situ формирующиеся имплантаты</kwd><kwd>сополимер молочной и гликолевой кислот</kwd><kwd>высвобождение лекарственного вещества</kwd><kwd>агарозный гель</kwd><kwd>полиакриламидный гель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ISFI</kwd><kwd>PLGA</kwd><kwd>Drug release</kwd><kwd>Agarose gel</kwd><kwd>Polyacrylamide gels</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">Ibrahim T.M., El-Megrab N.A., El-Nahas H.M. Optimization of injectable PLGA in-situ forming implants of anti-psychotic risperidone via Box-Behnken Design. Journal of Drug Delivery Science and Technology. 2020. vol. 58. pp. 101803.</mixed-citation><mixed-citation xml:lang="en">Ibrahim T.M., El-Megrab N.A., El-Nahas H.M. Optimization of injectable PLGA in-situ forming implants of anti-psychotic risperidone via Box-Behnken Design. Journal of Drug Delivery Science and Technology. 2020. vol. 58. pp. 101803.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Ibrahim T.M., El-Megrab N.A., El-Nahas H.M. An overview of PLGA in-situ forming implants based on solvent exchange technique: effect of formulation components and characterization. Pharmaceutical Development and Technology. 2021. vol. 26. no. 7. pp. 709-728.</mixed-citation><mixed-citation xml:lang="en">Ibrahim T.M., El-Megrab N.A., El-Nahas H.M. An overview of PLGA in-situ forming implants based on solvent exchange technique: effect of formulation components and characterization. Pharmaceutical Development and Technology. 2021. vol. 26. no. 7. pp. 709-728.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Muddineti O. S., Omri A. Current trends in PLGA based long-acting injectable products: The industry perspective. Expert Opinion on Drug Delivery. 2022. vol. 19. no. 5. pp. 559-576.</mixed-citation><mixed-citation xml:lang="en">Muddineti O. S., Omri A. Current trends in PLGA based long-acting injectable products: The industry perspective. Expert Opinion on Drug Delivery. 2022. vol. 19. no. 5. pp. 559-576.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Pandya A., Vora L., Umeyor C., Surve D. et al. Polymeric in situ forming depots for long-acting drug delivery systems. Advanced Drug Delivery Reviews. 2023. P. 115003. doi: 10.1016/j.addr.2023.115003</mixed-citation><mixed-citation xml:lang="en">Pandya A., Vora L., Umeyor C., Surve D. et al. Polymeric in situ forming depots for long-acting drug delivery systems. Advanced Drug Delivery Reviews. 2023. P. 115003. doi: 10.1016/j.addr.2023.115003</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Wang X., Burgess D.J. Drug release from in situ forming implants and advances in release testing. Advanced Drug Delivery Reviews. 2021. vol. 178. pp. 113912. doi: 10.1016/j.addr.2021.113912</mixed-citation><mixed-citation xml:lang="en">Wang X., Burgess D.J. Drug release from in situ forming implants and advances in release testing. Advanced Drug Delivery Reviews. 2021. vol. 178. pp. 113912. doi: 10.1016/j.addr.2021.113912</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Kožák J., Rabišková M., Lamprecht A. In-vitro drug release testing of parenteral formulations via an agarose gel envelope to closer mimic tissue firmness. International Journal of Pharmaceutics. 2021. vol. 594. pp. 120142. doi: 10.1016/j.ijpharm.2020.120142</mixed-citation><mixed-citation xml:lang="en">Kožák J., Rabišková M., Lamprecht A. In-vitro drug release testing of parenteral formulations via an agarose gel envelope to closer mimic tissue firmness. International Journal of Pharmaceutics. 2021. vol. 594. pp. 120142. doi: 10.1016/j.ijpharm.2020.120142</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Patel R.B., Solorio L., Wu H., Krupka T. et al. Effect of injection site on in situ implant formation and drug release in vivo. Journal of controlled release. 2010. vol. 147. №. 3. pp. 350-358. doi: 10.1016/j.jconrel.2010.08.020</mixed-citation><mixed-citation xml:lang="en">Patel R.B., Solorio L., Wu H., Krupka T. et al. Effect of injection site on in situ implant formation and drug release in vivo. Journal of controlled release. 2010. vol. 147. №. 3. pp. 350-358. doi: 10.1016/j.jconrel.2010.08.020</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Sun Y., Jensen H., Petersen N.J., Larsen S.W. et al. Concomitant monitoring of implant formation and drug release of in situ forming poly (lactide-co-glycolide acid) implants in a hydrogel matrix mimicking the subcutis using UV–vis imaging. Journal of pharmaceutical and biomedical analysis. 2018. vol. 150. pp. 95-106. doi: 10.1016/j.jpba.2017.11.065</mixed-citation><mixed-citation xml:lang="en">Sun Y., Jensen H., Petersen N.J., Larsen S.W. et al. Concomitant monitoring of implant formation and drug release of in situ forming poly (lactide-co-glycolide acid) implants in a hydrogel matrix mimicking the subcutis using UV–vis imaging. Journal of pharmaceutical and biomedical analysis. 2018. vol. 150. pp. 95-106. doi: 10.1016/j.jpba.2017.11.065</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Klose D., Azaroual N., Siepmann F., Vermeersch G. et al. Towards more realistic in vitro release measurement techniques for biodegradable microparticles. Pharmaceutical research. 2009. vol. 26. pp. 691-699.</mixed-citation><mixed-citation xml:lang="en">Klose D., Azaroual N., Siepmann F., Vermeersch G. et al. Towards more realistic in vitro release measurement techniques for biodegradable microparticles. Pharmaceutical research. 2009. vol. 26. pp. 691-699.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Mathur A.B., Collinsworth A.M., Reichert W.M., Kraus W.E. et al. Endothelial, cardiac muscle and skeletal muscle exhibit different viscous and elastic properties as determined by atomic force microscopy. Journal of biomechanics. 2001. vol. 34. no. 12. pp. 1545-1553. doi: 10.1016/S0021-9290(01)00149-X</mixed-citation><mixed-citation xml:lang="en">Mathur A.B., Collinsworth A.M., Reichert W.M., Kraus W.E. et al. Endothelial, cardiac muscle and skeletal muscle exhibit different viscous and elastic properties as determined by atomic force microscopy. Journal of biomechanics. 2001. vol. 34. no. 12. pp. 1545-1553. doi: 10.1016/S0021-9290(01)00149-X</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Lozinsky V.I. Cryogels on the basis of natural and synthetic polymers: preparation, properties and application. Russian Chemical Reviews. 2002. vol. 71. no. 6. pp. 489-511. doi: 10.1070/RC2002v071n06ABEH000720</mixed-citation><mixed-citation xml:lang="en">Lozinsky V.I. Cryogels on the basis of natural and synthetic polymers: preparation, properties and application. Russian Chemical Reviews. 2002. vol. 71. no. 6. pp. 489-511. doi: 10.1070/RC2002v071n06ABEH000720</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Solorio L., Babin B.M., Patel R.B., Mach J. et al. Noninvasive characterization of in situ forming implants using diagnostic ultrasound. Journal of Controlled Release. 2010. vol. 143. no. 2. pp. 183-190. doi: 10.1016/j.jconrel.2010.01.001</mixed-citation><mixed-citation xml:lang="en">Solorio L., Babin B.M., Patel R.B., Mach J. et al. Noninvasive characterization of in situ forming implants using diagnostic ultrasound. Journal of Controlled Release. 2010. vol. 143. no. 2. pp. 183-190. doi: 10.1016/j.jconrel.2010.01.001</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Kumskova N., Ermolenko Y., Osipova N., Semyonkin A. et al. How subtle differences in polymer molecular weight affect doxorubicin-loaded PLGA nanoparticles degradation and drug release. Journal of microencapsulation. 2020. vol. 37. no. 3. pp. 283-295.</mixed-citation><mixed-citation xml:lang="en">Kumskova N., Ermolenko Y., Osipova N., Semyonkin A. et al. How subtle differences in polymer molecular weight affect doxorubicin-loaded PLGA nanoparticles degradation and drug release. Journal of microencapsulation. 2020. vol. 37. no. 3. pp. 283-295.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Ye F., Larsen S.W., Yaghmur A., Jensen H. et al. Drug release into hydrogel-based subcutaneous surrogates studied by UV imaging. Journal of pharmaceutical and biomedical analysis. 2012. vol. 71. pp. 27-34. doi: 10.1016/j.jpba.2012.07.024</mixed-citation><mixed-citation xml:lang="en">Ye F., Larsen S.W., Yaghmur A., Jensen H. et al. Drug release into hydrogel-based subcutaneous surrogates studied by UV imaging. Journal of pharmaceutical and biomedical analysis. 2012. vol. 71. pp. 27-34. doi: 10.1016/j.jpba.2012.07.024</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Li Z., Mu H., Larsen S.W., Jensen H. et al. An in vitro gel-based system for characterizing and predicting the long-term performance of PLGA in situ forming implants. International Journal of Pharmaceutics. 2021. vol. 609. pp. 121183. doi: 10.1016/j.ijpharm.2021.121183</mixed-citation><mixed-citation xml:lang="en">Li Z., Mu H., Larsen S.W., Jensen H. et al. An in vitro gel-based system for characterizing and predicting the long-term performance of PLGA in situ forming implants. International Journal of Pharmaceutics. 2021. vol. 609. pp. 121183. doi: 10.1016/j.ijpharm.2021.121183</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Bassand C., Verin J., Lamatsch M., Siepmann F., et al. How agarose gels surrounding PLGA implants limit swelling and slow down drug release. Journal of Controlled Release. 2022. vol. 343. pp. 255-266. doi: 10.1016/j.jconrel.2022.01.028</mixed-citation><mixed-citation xml:lang="en">Bassand C., Verin J., Lamatsch M., Siepmann F., et al. How agarose gels surrounding PLGA implants limit swelling and slow down drug release. Journal of Controlled Release. 2022. vol. 343. pp. 255-266. doi: 10.1016/j.jconrel.2022.01.028</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Lefol L.A., Bawuah P., Zeitler J.A., Verin J. et al. Drug release from PLGA microparticles can be slowed down by a surrounding hydrogel. International Journal of Pharmaceutics: X. 2023. vol. 6. pp. 100220. doi: 10.1016/j.ijpx.2023.100220</mixed-citation><mixed-citation xml:lang="en">Lefol L.A., Bawuah P., Zeitler J.A., Verin J. et al. Drug release from PLGA microparticles can be slowed down by a surrounding hydrogel. International Journal of Pharmaceutics: X. 2023. vol. 6. pp. 100220. doi: 10.1016/j.ijpx.2023.100220</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Larsen C., Larsen S.W., Jensen H., Yaghmur A. et al. Role of in vitro release models in formulation development and quality control of parenteral depots. Expert opinion on drug delivery. 2009. vol. 6. №. 12. pp. 1283-1295. doi: 10.1517/17425240903307431</mixed-citation><mixed-citation xml:lang="en">Larsen C., Larsen S.W., Jensen H., Yaghmur A. et al. Role of in vitro release models in formulation development and quality control of parenteral depots. Expert opinion on drug delivery. 2009. vol. 6. №. 12. pp. 1283-1295. doi: 10.1517/17425240903307431</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Ulianova Y., Ermolenko Y., Tkachenko S., Trukhan V. et al. Tuning the release rate of rilpivirine from PLGA-based in situ forming implants. Polymer Bulletin. 2023. vol. 80. no. 10. pp. 11401-11420.</mixed-citation><mixed-citation xml:lang="en">Ulianova Y., Ermolenko Y., Tkachenko S., Trukhan V. et al. Tuning the release rate of rilpivirine from PLGA-based in situ forming implants. Polymer Bulletin. 2023. vol. 80. no. 10. pp. 11401-11420.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Hopkins K.A., Vike N., Li X., Kennedy J.et al. Noninvasive characterization of in situ forming implant diffusivity using diffusion-weighted MRI. Journal of Controlled Release. 2019. vol. 309. pp. 289-301. doi: 10.1016/j.jconrel.2019.07.019</mixed-citation><mixed-citation xml:lang="en">Hopkins K.A., Vike N., Li X., Kennedy J.et al. Noninvasive characterization of in situ forming implant diffusivity using diffusion-weighted MRI. Journal of Controlled Release. 2019. vol. 309. pp. 289-301. doi: 10.1016/j.jconrel.2019.07.019</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
