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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">transplantologiya</journal-id><journal-title-group><journal-title xml:lang="ru">Трансплантология</journal-title><trans-title-group xml:lang="en"><trans-title>Transplantologiya. The Russian Journal of Transplantation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-0506</issn><issn pub-type="epub">2542-0909</issn><publisher><publisher-name>IPO Association of Transplantologists</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23873/2074-0506-2023-15-1-34-45</article-id><article-id custom-type="elpub" pub-id-type="custom">transplantologiya-743</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>ПРОБЛЕМНЫЕ АСПЕКТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROBLEMATIC ASPECTS</subject></subj-group></article-categories><title-group><article-title>Модификация поливиниловым спиртом эпоксиобработанного ксеноперикарда повышает его резистентность к кальцификации in vitro</article-title><trans-title-group xml:lang="en"><trans-title>Polyvinyl alcohol improves resistance of epoxy-treated bovine pericardium to calcification in vitro</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6099-0315</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костюнин</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostyunin</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Евгеньевич Костюнин, канд. биол. наук, научный сотрудник лаборатории новых биоматериалов </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Alexander E. Kostyunin - Cand. Sci. (Biol.), Researcher of the Laboratory of New Biomaterials</p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">rhabdophis_tigrina@mail.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/0000-0002-4405-8904</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Резвова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rezvova</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Александровна Резвова - младший научный сотрудник лаборатории новых биоматериалов  </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Maria A. Rezvova - Junior Researcher of the Laboratory of New Biomaterials</p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">rezvovamaria@mail.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/0000-0003-4890-0393</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Глушкова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Glushkova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Владимировна Глушкова - канд. биол. наук, старший научный сотрудник лаборатории новых биоматериалов </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Tatyana V. Glushkova - Cand. Sci. (Biol.), Senior Researcher of the Laboratory of New Biomaterials </p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">bio.tvg@mail.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/0000-0002-1518-3888</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишкова</surname><given-names>Д. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishkova</surname><given-names>D. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья Кирилловна Шишкова - канд. биол. наук, научный сотрудник лаборатории молекулярной, трансляционной и цифровой медицины </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Daria K. Shishkova - Cand. Sci. (Biol.), Researcher of the Laboratory of Molecular, Translational and Digital Medicine </p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">shishkovadk@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8679-4857</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кутихин</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kutikhin</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антон Геннадьевич Кутихин - канд. мед. наук, заведующий лабораторией молекулярной, трансляционной и цифровой медицины </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Anton G. Kutikhin - Cand. Sci. (Med.), Head of the Laboratory of Molecular, Translational and Digital Medicine </p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">antonkutikhin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0033-9376</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акентьева</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Akentieva</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Николаевна Акентьева - младший научный сотрудник лаборатории новых биоматериалов </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Tatyana N. Akentieva - Junior Researcher of the Laboratory of New Biomaterials </p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">t.akentyeva@mail.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/0000-0001-7477-3979</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овчаренко</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovcharenko</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Андреевич Овчаренко - канд. техн. наук, заведующий лабораторией новых биоматериалов </p><p> 650002, Россия, Кемерово, Сосновый б-р, д. 6 </p></bio><bio xml:lang="en"><p>Evgeny A. Ovcharenko - Cand. Sci. (Tech.), Head of the Laboratory of New Biomaterials</p><p> 6 Sosnovy Blvd., Kemerovo 650002 Russia </p></bio><email xlink:type="simple">ov.eugene@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБНУ «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний»<country>Россия</country></aff><aff xml:lang="en">Research Institute for Complex Issues of Cardiovascular Diseases<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>18</day><month>03</month><year>2023</year></pub-date><volume>15</volume><issue>1</issue><fpage>34</fpage><lpage>45</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Костюнин А.Е., Резвова М.А., Глушкова Т.В., Шишкова Д.К., Кутихин А.Г., Акентьева Т.Н., Овчаренко Е.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Костюнин А.Е., Резвова М.А., Глушкова Т.В., Шишкова Д.К., Кутихин А.Г., Акентьева Т.Н., Овчаренко Е.А.</copyright-holder><copyright-holder xml:lang="en">Kostyunin A.E., Rezvova M.A., Glushkova T.V., Shishkova D.K., Kutikhin A.G., Akentieva T.N., Ovcharenko E.A.</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.jtransplantologiya.ru/jour/article/view/743">https://www.jtransplantologiya.ru/jour/article/view/743</self-uri><abstract><p>Актуальность. До половины имплантируемых реципиентам биологических протезов клапанов сердца подвержены развитию дисфункций через 15 лет функционирования. Основной причиной несостоятельности биологических протезов является структурная дегенерация, обусловленная кальцификацией створчатого аппарата. Таким образом, особую актуальность для увеличения долговечности биологических протезов приобретает защита биоматериала от кальцификации.Цель. Разработать модификацию биоматериала поливиниловым спиртом для повышения резистентности биологических протезов к кальцификации.Материал и методы. Фрагменты эпоксиобработанного бычьего перикарда инкубировали в водных растворах с разной концентрацией (5, 10, 12 и 15%) поливинилового спирта и подвергали криообработке для формирования геля. Поверхность модифицированного поливиниловым спиртом биоматериала изучали методом сканирующей электронной микроскопии, внутреннюю структуру – посредством флуоресцентной микроскопии и методом сканирующей электронной микроскопии. Механические свойства модифицированного поливиниловым спиртом ксеноперикарда оценивали одноосным растяжением. Для оценки гемосовместимых свойств определяли степень гемолиза, агрегации и адгезии тромбоцитов после контакта донорской крови с образцами. Резистентность модифицированного поливиниловым спиртом биоматериала к кальцификации оценивали путем инкубации образцов в насыщенном ионами кальция (10 ммоль) и фосфат-ионами растворе в течение 3 и 6 недель с последующим количественным определением содержания кальция в биоткани спектрофотометрическим методом. В качестве группы контроля при проведении вышеперечисленных тестов использовали немодифицированный эпоксиобработанный бычий перикард.Результаты. При модификации эпоксиобработанного ксеноперикарда поливиниловым спиртом получен композитный материал, представляющий собой матрицу коллагеновых волокон, заполненную гелем. Оптимальный результат, подразумевающий полное закрытие гелем пор на поверхности ксеноперикарда и равномерное заполнение межфибриллярного пространства в его толще, достигнут при использовании 12% раствора поливинилового спирта. Модификация не ухудшила механические и гемосовместимые свойства эпоксиобработанного ксеноперикарда. После 3 и 6 недель инкубации в насыщенном кальцием растворе модифицированные поливиниловым спиртом образцы содержали соответственно в 5 и 3 раза меньше кальция по сравнению с образцами в контрольной группе.Выводы.Предложенный способ обработки ксеноперикарда поливиниловым спиртом повышает его устойчивость к кальцификации и может быть взят за основу при разработке новой модификации биологического компонента биологических протезов.</p></abstract><trans-abstract xml:lang="en"><p>Background. Around half of bioprosthetic heart valves become dysfunctional 15 years postimplantation because of structural valve deterioration notable for the degradation and calcification of the prosthetic tissue. Protection of bioprosthetic heart valves from structural valve deterioration requires innovative materials, science approaches including enveloping of the bioprosthetic heart valves into the polymer sheath.Aim. To develop a polyvinyl alcohol sheath for improving resistance of bioprosthetic heart valves to calcification.Material and methods. Bovine pericardium fixed with ethylene glycol diglycidyl ether was incubated with distinct concentrations of polyvinyl alcohol (5, 10, 12, or 15%) with the following freezing and thawing to perform cryotropic gelation. Surface and structure of unmodified and polyvinyl alcohol-modified bovine pericardium have been investigated by fluorescence microscopy and scanning electron microscopy, whilst tensile testing was carried out by uniaxial tension test. Haemocompatibility was assessed through the measurements of haemolysis and platelet aggregation/adhesion upon the contact of donor blood with the samples. Resistance to calcification was tested by incubation of the samples in calcium and phosphate supersaturated (10 µmol/L) cell culture medium for 3 and 6 weeks with the following tissue lysis and colorimetric measurement of Ca2+ ions.Results. Using cryotropic gelation, we obtained a polyvinyl alcohol-coated and filled bovine pericardium matrix. Out of all polyvinyl alcohol concentrations, 12% polyvinyl alcohol solution sealed pores and hollows within the bovine pericardium (what was not achieved using 5% or 10% polyvinyl alcohol solutions) and demonstrated the best processability as compared to 15% polyvinyl alcohol solution. Cryotropic gelation did not deteriorate durability, elasticity, or haemocompatibility of bovine pericardium. After 3 and 6 weeks of the incubation in calcium-supersaturated solution, polyvinyl alcoholmodified bovine pericardium contained 5- and 3-fold reduced amount of calcium compared to unmodified bovine pericardium.Conclusions. Enveloping of bovine pericardium into polyvinyl alcohol increases its calcification resistance, retains its tensile properties and haemocompatibility, and can be considered as a promising approach for the modification of bovine pericardium during the manufacturing of bioprosthetic heart valves.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биопротезы клапанов сердца</kwd><kwd>бычий перикард</kwd><kwd>криотропное гелеобразование</kwd><kwd>поливиниловый спирт</kwd><kwd>кальцификация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bioprosthetic heart valves</kwd><kwd>bovine pericardium</kwd><kwd>cryotropic gelation</kwd><kwd>polyvinyl alcohol</kwd><kwd>calcification</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при финансовой поддержке гранта Российского научного фонда (грант № 21-75-10107)</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The study was funded by the Russian Science Foundation (project No. 21-75-10107)</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">Coffey S, Roberts-Thomson R, Brown A, Carapetis J, Chen M, EnriquezSarano M, et al. 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