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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">sibmed</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский научный медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Сибирский научный медицинский журнал</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-2512</issn><issn pub-type="epub">2410-2520</issn><publisher><publisher-name>ИЦиГ СО РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/SSMJ20250313</article-id><article-id custom-type="elpub" pub-id-type="custom">sibmed-2246</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>МЕДИКО-БИОЛОГИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOMEDICINE</subject></subj-group></article-categories><title-group><article-title>Ферментная деградация коллагена как фактор, усиливающий кальцификацию эпоксиобработанных биопротезов клапанов сердца: данные моделирования in vitro</article-title><trans-title-group xml:lang="en"><trans-title>Enzymatic degradation of collagen as a factor enhancing calcification of epoxy-treated bioprosthetic heart valves: in vitro modeling data</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, к. б. н.</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Alexandr E. Kostyunin, candidate of biological sciences</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</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/0000-0003-4890-0393</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, к. б. н.</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Tatyana V. Glushkova, candidate of biological sciences</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</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/0000-0002-0033-9376</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>Akentyeva</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Николаевна Акентьева</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Tatyana N. Akentyeva</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</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/0009-0004-1138-9653</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисова</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisova</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Николаевна Борисова, </p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Natalya N. Borisova</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</p></bio><email xlink:type="simple">brsvnn99@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/0000-0003-3211-1250</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клышников</surname><given-names>К. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Klyshnikov</surname><given-names>K. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кирилл Юрьевич Клышников, к. м. н.</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Kirill Yu. Klyshnikov, candidate of medical sciences</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</p></bio><email xlink:type="simple">klyshnikovk@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/0000-0003-2404-2873</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Онищенко</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Onishchenko</surname><given-names>P. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Павел Сергеевич Онищенко</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Pavel S. Onishchenko</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</p></bio><email xlink:type="simple">onis.pavel@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/0009-0008-8957-5041</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клюева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Klyueva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Александровна Клюева</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Anastasia A. Klyueva</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</p></bio><email xlink:type="simple">kaiketsu@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, к. т. н.</p><p>650002; б-р им. Академика Л.С. Барбараша, стр. 6; Кемерово</p></bio><bio xml:lang="en"><p>Evgeniy A. Ovcharenko, candidate of technical sciences</p><p>650002; Academician Barbarash blvd., 6; Kemerovo</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"><institution>НИИ комплексных проблем сердечно-сосудистых заболеваний</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute for Complex Issues of Cardiovascular Diseases</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2025</year></pub-date><volume>45</volume><issue>3</issue><fpage>120</fpage><lpage>126</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Костюнин А.Е., Глушкова Т.В., Акентьева Т.Н., Борисова Н.Н., Клышников К.Ю., Онищенко П.С., Клюева А.А., Овчаренко Е.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Костюнин А.Е., Глушкова Т.В., Акентьева Т.Н., Борисова Н.Н., Клышников К.Ю., Онищенко П.С., Клюева А.А., Овчаренко Е.А.</copyright-holder><copyright-holder xml:lang="en">Kostyunin A.E., Glushkova T.V., Akentyeva T.N., Borisova N.N., Klyshnikov K.Y., Onishchenko P.S., Klyueva A.A., Ovcharenko E.A.</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://sibmed.elpub.ru/jour/article/view/2246">https://sibmed.elpub.ru/jour/article/view/2246</self-uri><abstract><p>   Цель исследования – оценить в эксперименте in vitro влияние ферментной деградации коллагена на последующую кальцификацию эпоксиобработанного бычьего перикарда, используемого в производстве биопротезов клапанов сердца.</p><sec><title>   Материал и методы</title><p>   Материал и методы. Материалом для исследования стали лоскуты эпоксиобработанного бычьего перикарда, фрагменты которых инкубировали в растворе бактериальной коллагеназы. Степень деградации образцов после обработки ферментом анализировали по потере массы и изменению механических свойств. Также образцы после протеолиза помещали в кальцинирующий раствор на три недели, далее определяя содержание в них кальция спектрофотометрическим методом. Контролем в экспериментах были фрагменты эпоксиобработанного перикарда, не подвергавшиеся воздействию коллагеназы.</p><p>   Результаты и их обсуждение. В среднем потеря массы фрагментов эпоксиобработанного перикарда при 24-часовой инкубации в коллагеназе составила около 8 %, что сопоставимо с указанными в литературе значениями для перикарда, стабилизированного глутаровым альдегидом. Также обработка ферментом привела к снижению предела прочности изучаемого материала (14,15 [13,08–16,58; 11,4–22,43] МПа (медиана [25-й процентиль – 75-й процентиль; минимум – максимум]) в контроле и 10,67 [7,37–11,6; 6,39–11,95] МПа в экспериментальной группе, p = 0,0003) и усилению его кальцификации в 1,6 раза (8,61 [6,58–9,81; 4,78–14,53] мг кальция/г ткани в контроле и 13,41 [10,58–17,27; 7,76–28,41] мг кальция/г ткани в экспериментальной группе, p = 0,0001).</p></sec><sec><title>   Заключение</title><p>   Заключение. Ферментная деградация коллагена в эпоксиобработанном бычьем перикарде способствует усилению его кальцификации in vitro. Полученные данные предполагают, что накопление коллагенолитических ферментов в створках ксеноперикардиальных биопротезов клапанов сердца является важным механизмом их структурной дегенерации.</p></sec></abstract><trans-abstract xml:lang="en"><p>   Aim of the study was to assess in vitro the impact of enzymatic degradation of collagen on the subsequent calcification of the epoxy-treated bovine pericardium used in the production of bioprosthetic heart valves.</p><sec><title>   Material and methods</title><p>   Material and methods. The study involved epoxy-treated bovine pericardium patches, samples of which were incubated with bacterial collagenase solution. The degree of degradation of the samples after enzyme treatment was analyzed by mass loss and changes in mechanical properties. The samples were also subjected to proteolysis, and then placed in a calcification solution for 3 weeks. The calcium content was evaluated by spectrophotometry. The control group included epoxy-treated bovine pericardium patches that were not incubated with bacterial collagenase solution.</p><p>   Results and discussion. On average, the mass loss of studied samples was equal to 8 % during 24-hour incubation in collagenase, which is comparable to the values for glutaraldehyde-treated pericardium according to the literature data. Moreover, the enzyme treatment led to a decrease in the tensile strength of the studied material (14.15 [13.08–16.58; 11.4–22.43] MPa (median [25th percentile – 75th percentile; minimum – maximum]) in control group vs. 10.67 [7.37–11.6; 6.39–11.95] MPa in the study group, p = 0.0003) and increase in its calcification by 1.6 times (8.61 [6.58–9.81; 4.78–14.53] mg of calcium/g of tissue in the control group vs. 13.41 [10.58–17.27; 7.76–28.41] mg of calcium/g of tissue in the study group, p = 0.0001).</p></sec><sec><title>   Conclusions</title><p>   Conclusions. The enzymatic degradation of collagen in the epoxy-treated bovine pericardium enhances its calcification in vitro. The data obtained suggest that the accumulation of collagenolytic enzymes in the leaflets of xenopericardial bioprosthetic heart valves is an important mechanism of structural degeneration.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>биопротезы клапанов сердца</kwd><kwd>структурная дегенерация клапана</kwd><kwd>протеолиз</kwd><kwd>кальцификация</kwd><kwd>бактериальная коллагеназа</kwd><kwd>моделирование in vitro</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bioprosthetic heart valves</kwd><kwd>structural valve degeneration</kwd><kwd>proteolysis</kwd><kwd>calcification</kwd><kwd>bacterial collagenase</kwd><kwd>in vitro modeling</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках фундаментальной темы ФГБНУ НИИ комплексных проблем сердечно-сосудистых заболеваний № 0419-2022-0001 «Молекулярные, клеточные и биомеханические механизмы патогенеза сердечно-сосудистых заболеваний в разработке новых методов лечения заболеваний сердечно-сосудистой системы на основе персонифицированной фармакотерапии, внедрения малоинвазивных медицинских изделий, биоматериалов и тканеинженерных имплантатов»</funding-statement><funding-statement xml:lang="en">The research was funded by the Complex Program of Basic Research under the SB of RAS within the Basic Research Topic of Research Institute for Complex Issues of Cardiovascular Diseases No. 0419-2022-0001 “Discovering molecular, cellular and biomechanical mechanisms of cardiovascular diseases to develop novel approaches for their treatment, including personalized pharmacotherapy, minimally invasive surgery, composite biomaterials, and tissue-engineered cardiovascular implants”</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">Barbarash L., Rutkovskaya N., Barbarash O., Odarenko Y., Stasev A., Uchasova E. 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