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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/SSMJ20250520</article-id><article-id custom-type="elpub" pub-id-type="custom">sibmed-2452</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>Влияние фитокомплекса, состоящего из рисовой шелухи, зеленого чая и облепихи, на костную ткань при остеопорозе у крыс</article-title><trans-title-group xml:lang="en"><trans-title>Effect of phytocomplex consisting of rice husk, green tea and sea buckthorn on bone tissue in osteoporosis model in rats</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8226-8996</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Слажнева</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Slazhneva</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Слажнева Наталья Александровна</p><p>630060, г. Новосибирск, ул. Арбузова, 6</p></bio><bio xml:lang="en"><p>Natalya A. Slazhneva</p><p>630060, Novosibirsk, Arbuzova st., 6</p></bio><email xlink:type="simple">sitnikovanat9@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/0000-0002-3443-0821</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашковская</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashkovskaya</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пашковская Оксана Александровна</p><p>630055, г. Новосибирск, ул. Речкуновская, 15</p></bio><bio xml:lang="en"><p>Oksana A. Pashkovskaya</p><p>630055, Novosibirsk, Reshkunovskaya st., 15</p></bio><email xlink:type="simple">oxana.pashkovskaya@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9684-7190</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шигаев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shigaev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шигаев Вадим Витальевич</p><p>630055, г. Новосибирск, ул. Речкуновская, 15</p></bio><bio xml:lang="en"><p>Vadim V. Shigaev</p><p>630055, Novosibirsk, Reshkunovskaya st., 15</p></bio><email xlink:type="simple">shigaev_v@meshalkin.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/0000-0002-8443-656X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бондаренко</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bondarenko</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бондаренко Наталья Анатольевна, к.б.н.</p><p>630060, г. Новосибирск, ул. Арбузова, 6</p></bio><bio xml:lang="en"><p>Natalya A. Bondarenko, сandidate of biological sciences</p><p>630060, Novosibirsk, Arbuzova st., 6</p></bio><email xlink:type="simple">bond802888@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НИИ клинической и экспериментальной лимфологии – филиал ФИЦ Институт цитологии и генетики СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Clinical and Experimental Lymphology – Branch of the Federal Research Center Institute of Cytology and Genetics SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр им. академика Е.Н. Мешалкина Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Meshalkin National Medical Research Center of Minzdrav of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>04</day><month>11</month><year>2025</year></pub-date><volume>45</volume><issue>5</issue><fpage>228</fpage><lpage>236</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Слажнева Н.А., Пашковская О.А., Шигаев В.В., Бондаренко Н.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Слажнева Н.А., Пашковская О.А., Шигаев В.В., Бондаренко Н.А.</copyright-holder><copyright-holder xml:lang="en">Slazhneva N.A., Pashkovskaya O.A., Shigaev V.V., Bondarenko N.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/2452">https://sibmed.elpub.ru/jour/article/view/2452</self-uri><abstract><p>Остеопороз развивается в связи с нарушением баланса между процессами формирования и разрушения костной ткани. Цель исследования – изучить влияние фитокомплекса с комбинированным составом из смеси рисовой шелухи, зеленого чая и облепихового жмыха на костную ткань в модели остеопороза у крыс.</p><sec><title>Материал и методы</title><p>Материал и методы. С помощью жидкостной хроматографии и масс-спектрометрии определяли в фитокомплексе из рисовой шелухи, зеленого чая и облепихи содержание активных веществ: катехинов и флавоноидов. У самок крыс линии Вистар (n = 32) в возрасте 3 месяцев путем овариэктомии моделировали остеопороз, животным в течение четырех недель вводили фитокомплекс, референтный препарат или физиологический раствор. Плотность костной ткани исследовали с помощью компьютерной томографии бедренной кости. Гистологическую оценку костной ткани проводили путем окрашивания срезов по Ван Гизону.</p><p>Результаты и их обсуждение. Установлено, что фитокомплекс содержит L-эпикатехин, кемпферол и изорамнетин. У животных после овариэктомии развивается остеопороз по признакам компьютерной томографии. После введения фитокомплекса и референтного препарата у животных с остеопорозом плотность кости значимо увеличилась по сравнению с группой введения физиологического раствора (989 и 1018 HU соответственно). У животных, получавших фитокомплекс, наблюдалась менее интенсивная окраска коллагеновых волокон, чем в контроле, однако возникали зоны с вновь синтезированными волокнами коллагена вокруг гаверсовых каналов и в наружных областях костных трабекул.</p></sec><sec><title>Заключение</title><p>Заключение. При пероральном применении в течение четырех недель фитокомплекс с комбинированным составом из смеси рисовой шелухи, зеленого чая и облепихового жмыха приводит к увеличению плотности и образованию коллагеновых волокон костной ткани при остеопорозе у крыс. Данный фитокомплекс можно считать перспективным для поддержания костной ткани при остеопорозе.</p></sec></abstract><trans-abstract xml:lang="en"><p>Osteoporosis develops due to an imbalance between the processes of bone tissue formation and destruction. The aim of the study was to investigate the effect of a phytocomplex with a combined composition of a mixture of rice husk, green tea and sea buckthorn cake on bone tissue in a model of osteoporosis in rats.</p><sec><title>Material and methods</title><p>Material and methods. Liquid chromatography and mass-spectrometry were used to determine the content of active compounds (katechins and flavonoids) of phytocomplex with rice husk, green tea and sea buckthorn. The study was conducted on female Wistar rats (n = 32) at the age of 3 months. Osteoporosis was induced by ovariectomy. Phytocomplex, reference drug or a saline solution was administered to the animals for 4 weeks. Bone density was studied using computed tomography of the femur. Histological evaluation of bone tissue was performed by Van Gieson staining.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. It was discovered that the phytocomplex contains L-epicatechin, kempferol and isoramnetin. Animals undergoing ovariectomy develop osteoporosis as demonstrated by computed tomography. After administration of the phytocomplex and the reference drug to animals with simulated osteoporosis, bone density was significantly higher compared to the saline injection group (989 and 1018 HU, respectively). In animals receiving the phytocomplex, less intense coloration of collagen fibers than in the control, but areas with newly synthesized collagen fibers appeared around the Haversian canals and in the outer areas of bone trabeculae.</p></sec><sec><title>Conclusions</title><p>Conclusions. When administered orally for 4 weeks, the phytocomplex with a combined composition of a mixture of rice husk, green tea and sea buckthorn cake leads to an increase in bone density and promotes the formation of collagen fibers in bone tissue in osteoporosis in rats. This phytocomplex can be considered promising for maintaining bone tissue in osteoporosis.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>остеопороз</kwd><kwd>фитоэкстракт</kwd><kwd>зеленый чай</kwd><kwd>облепиха</kwd><kwd>L-эпикатехин</kwd><kwd>плотность кости</kwd></kwd-group><kwd-group xml:lang="en"><kwd>osteoporosis</kwd><kwd>phytoextract</kwd><kwd>green tea</kwd><kwd>sea buckthorn</kwd><kwd>L-epicatechin</kwd><kwd>bone density</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по теме государственного задания № FWNR-2024-0005.</funding-statement><funding-statement xml:lang="en">The work was carried out on the subject of the state assignment no. 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