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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">2381</article-id><article-id pub-id-type="doi">10.17750/KMJ2016-142</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>To the 40th anniversary of Pharmaceutical Faculty of Kazan State Medical University</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>К 40-летию фармацевтического факультета Казанского государственного медицинского университета</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Intermacromolecular interactions with Eudragit® copolymers as a new principle of the microparticulate oral drug delivery systems development</article-title><trans-title-group xml:lang="ru"><trans-title>Межмакромолекулярные взаимодействия с участием сополимеров Eudragit® как новый принцип создания микропартикулярных пероральных систем доставки лекарств</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Moustafine</surname><given-names>R I</given-names></name><name xml:lang="ru"><surname>Мустафин</surname><given-names>Руслан Ибрагимович</given-names></name></name-alternatives><email>mustaf@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kazan State Medical University</institution></aff><aff><institution xml:lang="ru">Казанский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2016-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2016</year></pub-date><volume>97</volume><issue>1</issue><issue-title xml:lang="en">VOL 97, NO1 (2016)</issue-title><issue-title xml:lang="ru">ТОМ 97, №1 (2016)</issue-title><fpage>142</fpage><lpage>147</lpage><history><date date-type="received" iso-8601-date="2016-03-28"><day>28</day><month>03</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2016, Moustafine R.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Мустафин Р.И.</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Moustafine R.I.</copyright-holder><copyright-holder xml:lang="ru">Мустафин Р.И.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/2381">https://kazanmedjournal.ru/kazanmedj/article/view/2381</self-uri><abstract xml:lang="en"><p>The main trends of combining the chemically complementary types of (meth)acrylic copolymers of pharmaceutical-grade - Eudragit® in oral microparticulate systems with modified release (spheres, granules, capsules, etc.) - and the technological methods used in their manufacture, including various types of coating (single-layer, multi-layered, combined) are considered. It is noted that the processes that control the drugs release are based on pH-dependent intermacromolecular interaction of reactive groups between a pair of opposite charged Eudragit® copolymers both inside of spherical micro-matrix and inside the multilayer and combined coatings, allowing regulating both the degree and time of active pharmaceutical ingredients (API) release from pharmaceutical form. Using this principle allows to develop time-sensitive and pH-sensitive systems with a targeted API delivery to predetermined parts of the gastrointestinal tract, preferably to the colon, which is not only the optimal zone for absorption of many API, but also often requires treatment of inflammatory diseases of different origin. Analysis of these processes is of key importance to a better understanding of the mechanisms underlying the API transport from considered systems types, methods of their correction, modification of macromolecular parameters (such as the copolymer units charge density, the stoichiometry of the produced composition, the hydrophilic and hydrophobic fragments ratio in the polycomplexes structure affecting the swelling and resulting permeability of the system), as well as perspectives of (meth)acrylate polycomplexes use as a new class of carriers in the design of modern self-regulating, depending on the gastrointestinal tract physiological fluids pH, microparticulate oral API delivery systems.</p></abstract><trans-abstract xml:lang="ru"><p>Рассмотрены основные тенденции комбинирования химически комплементарных типов (мет)акриловых сополимеров фармацевтического назначения - Eudragit® в пероральных микропартикулярных системах с модифицированным высвобождением (сферы, гранулы, капсулы и др.) - и технологических приёмов, используемых при их получении, включая покрытие различными типами оболочек (однослойными, многослойными, комбинированными). Отмечено, что в основе процессов, контролирующих высвобождение лекарственных веществ (ЛВ), лежит рН-зависимое межмакромолекулярное взаимодействие реакционно-способных групп между парой противоположно заряжённых сополимеров Eudragit® как внутри сферических микроматриц, так и внутри многослойных и комбинированных покрытий, позволяющих регулировать как степень, так и время выхода ЛВ из лекарственных форм. Использование данного принципа позволяет разрабатывать время-чувствительные и рН-чувствительные системы с целенаправленной доставкой ЛВ в заданные отделы желудочно-кишечного тракта, преимущественно в толстый отдел кишечника, не только являющийся оптимальной зоной всасывания многих ЛВ, но и наиболее часто нуждающийся в лечении воспалительных заболеваний различного генеза. Анализ этих процессов имеет ключевое значение для расширения представлений о механизмах, лежащих в основе транспорта ЛВ из рассматриваемых типов систем, способах их коррекции, изменении макромолекулярных параметров (таких, как плотность заряда сополимерных звеньев, стехиометрия образующихся составов, соотношение гидрофильных и гидрофобных фрагментов в структуре поликомплексов, влияющих на набухаемость и результирующую проницаемость системы), а также перспективности использования самих (мет)акрилатных поликомплексов как нового класса носителей при конструировании современных саморегулирующихся в зависимости от значения рН физиологических сред желудочно-кишечного тракта микропартикулярных пероральных систем доставки лекарственных веществ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Eudragit® copolymers</kwd><kwd>microparticulate oral delivery system</kwd><kwd>(meth)acrylate polycomplexes</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сополимеры Eudragit®</kwd><kwd>пероральные микропартикулярные системы доставки</kwd><kwd>(мет)акрилатные поликомплексы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Adeyeye M.C., Mwangi E., Katondo B. et al. 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