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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">microcirculation</journal-id><journal-title-group><journal-title xml:lang="ru">Регионарное кровообращение и микроциркуляция</journal-title><trans-title-group xml:lang="en"><trans-title>Regional blood circulation and microcirculation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-6655</issn><issn pub-type="epub">2712-9756</issn><publisher><publisher-name>Academician I.P. Pavlov First St. Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/1682-6655-2023-22-3-78-85</article-id><article-id custom-type="elpub" pub-id-type="custom">microcirculation-1219</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>ОРИГИНАЛЬНЫЕ СТАТЬИ (ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES (EXPERIMENTAL INVESTIGATIONS)</subject></subj-group></article-categories><title-group><article-title>Влияние геля, содержащего микрокапсулы наночастиц cеребра, загруженные метронидазолом, на состояние микроциркуляторного русла десны у животных с экспериментальным пародонтитом</article-title><trans-title-group xml:lang="en"><trans-title>Effects of the gel containing microcapsules with silver nanoparticles loaded with metronidazole on the state of the gingival microcirculation in animals with experimental periodontitis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савкина</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Savkina</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савкина Ангелина Альбертовна – младший научный сотрудник Центральной научно-исследовательской лаборатории</p><p>410012, г. Саратов, ул. Большая Казачья, д. 112</p></bio><bio xml:lang="en"><p>Savkina Angelina A. – Junior Researcher, Central Research Laboratory</p><p>112, Bolshaya Kazachya str., Saratov, 410012</p></bio><email xlink:type="simple">sawkina.ange@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ленгерт</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lengert</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ленгерт Екатерина Владимировна – младший  научный сотрудник Центральной научно-исследовательской лаборатории</p><p>410012, г. Саратов, ул. Большая Казачья, д. 112</p></bio><bio xml:lang="en"><p>Lengert Ekaterina V. – Junior Researcher, Central Research Laboratory </p><p>112, Bolshaya Kazachya str., Saratov, 410012</p></bio><email xlink:type="simple">lengertkatrin@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермаков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermakov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ермаков Алексей Вадимович – младший научный сотрудник Центральной научно-исследовательской лаборатории</p><p>410012, г. Саратов, ул. Большая Казачья, д. 112</p></bio><bio xml:lang="en"><p>Ermakov Alexey V. – Junior Researcher, Central Research Laboratory</p><p>112, Bolshaya Kazachya str., Saratov, 410012</p><p> </p></bio><email xlink:type="simple">oualeksej@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Степанова Татьяна Вячеславовна – младший научный сотрудник Центральной научно-исследовательской лаборатории </p><p>410012, г. Саратов, ул. Большая Казачья, д. 112</p></bio><bio xml:lang="en"><p>Stepanova Tat’yana V. – Junior Researcher, Central Research Laboratory</p><p>112, Bolshaya Kazachya str., Saratov, 410012</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванов Алексей Николаевич – д-р мед. наук, доцент, зав. отделением лабораторной диагностики научно-исследовательского института травматологии, ортопедии и нейрохирургии, заведующий Центральной научно-исследовательской лабораторией, заведующий кафедрой нормальной физиологии им. И. А. Чуевского</p><p>410012, г. Саратов, ул. Большая Казачья, д. 112</p></bio><bio xml:lang="en"><p>Ivanov Alexey N. – Doctor of Medical Sciences, Associate Professor, Head, Department of Laboratory Diagnostics, Research Institute of Traumatology, Orthopedics and Neurosurgery; Head, Central Scientific Research Laboratory; Head, Department of Normal Physiology</p><p>112, Bolshaya Kazachya str., Saratov, 410012</p></bio><email xlink:type="simple">lex558452@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное  учреждение высшего образования «Саратовский государственный медицинский университет имени В. И. Разумовского» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Razumovsky Saratov State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>16</day><month>10</month><year>2023</year></pub-date><volume>22</volume><issue>3</issue><fpage>78</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савкина А.А., Ленгерт Е.В., Ермаков А.В., Степанова Т.В., Иванов А.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Савкина А.А., Ленгерт Е.В., Ермаков А.В., Степанова Т.В., Иванов А.Н.</copyright-holder><copyright-holder xml:lang="en">Savkina A.A., Lengert E.V., Ermakov A.V., Stepanova T.V., Ivanov A.N.</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.microcirc.ru/jour/article/view/1219">https://www.microcirc.ru/jour/article/view/1219</self-uri><abstract><p>Введение. Микроциркуляторные нарушения сопровождают все стадии развития воспалительных заболеваний пародонта, поэтому их коррекция является важной задачей комплексной терапии пародонтита. Учитывая значимость антибиотикотерапии в лечении воспалительных заболеваний полости рта, научный и практический интерес представляет изучение возможностей использования системы для адресной доставки антибактериальных препаратов, а также ее влияние на микроциркуляторное русло тканей пародонтального комплекса. Цель – изучить влияние геля, содержащего альгинатные микрокапсулы с наночастицами серебра (AgNP), загруженные метронидазолом, на состояние микроциркуляторного русла десны у животных с экспериментальным пародонтитом. Материалы и методы. Исследования проводились на 40 белых крысах. Дизайн эксперимента предполагал деление всех животных на несколько групп: контрольная – крысы с интактной десной; группа сравнения – животные с экспериментальным пародонтитом; группа «плацебо» – крысы, которым на фоне экспериментального пародонтита наносили на десны гель, содержащий микрокапсулы с AgNP без активных компонентов; опытная группа – животные с экспериментальным пародонтитом, которым проводили аппликации геля, содержащего микрокапсулы AgNP, загруженные метронидазолом. Пародонтит моделировали лигатурным методом путем вшивания в десну полифиламентной  нерассасывающейся нити в области резцов нижней челюсти. Состояние микрососудистого русла во всех представленных группах оценивали после удаления лигатуры на 21-й день эксперимента методом лазерной допплеровской флоуметрии. Результаты. При экспериментальном пародонтите у белых крыс на 3-й неделе возникают выраженные микроциркуляторные нарушения, проявляющиеся увеличением перфузионного показателя на 37 %, а также амплитуд эндотелиальных,нейрогенных, миогенных, дыхательных и сердечных колебаний перфузии по сравнению с интактным контролем. Гель, содержащий только микрокапсулы с AgNP, у крыс с пародонтитом снижает перфузионный показатель на 23,9 %, не оказывая влияния на нарушенные параметры активной и пассивной модуляции кровотока десен. Загрузка в микрокапсулы с AgNP метронидазола повышает эффективность применения геля в коррекции перфузионного показателя на 6,7 %, амплитуд миогенных и дыхательных колебаний на 26,8 % и 19,8 % по сравнению с аналогом без активных компонентов. Выводы. Гель, содержащий микрокапсулы с AgNP и метронидазолом, по сравнению с аналогом без активных компонентов, эффективнее восстанавливает перфузию десен, снижая амплитуды миогенных и дыхательных колебаний.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. Microcirculatory disorders accompany all stages of inflammatory periodontal diseases and their correction is one of the challenges in periodontitis complex therapy. Considering the significance of antibiotic therapy in the treatment of oral cavity inflammatory diseases, the scientific and practical interest lies in studying the possibilities of using a system for targeted delivery of antibacterial agents, as well as its influence on the periodontal tissues microcirculation.The aim of the study is to investigate the effect of a gel containing alginate microcapsules with silver nanoparticles (AgNP) loaded with metronidazole on the state of the gum’s microcirculation in animals with experimental periodontitis. Materials and methods. The study was conducted on 40 white rats. The experimental design involved dividing all animals into several groups: the control group included rats with intact gums; the comparison group were animals with experimental periodontitis; the placebo group were rats with experimental periodontitis treated with a gel containing microcapsules with AgNP but without active components; the experimental group included animals with periodontitis which received applications of the gel containing AgNP microcapsules loaded with  metronidazole. Periodontitis was modeled by the ligature method by suturing a multifilament non-absorbable thread in the gum area of the lower jaw incisors. The state of periodontal microcirculation in all presented groups was assessed on the 21st day of the experiment after the ligature removal, using laser Doppler flowmetry. Results. In experimental periodontitis in white rats, the pronounced microcirculatory disorders occur on the 3rd week, manifested by an increase in the perfusion index by 37% as well as an increase in amplitudes of endothelial, neurogenic, myogenic, respiratory, and cardiac perfusion fluctuations compared to the intact control. The gel containing only AgNP microcapsules in rats with periodontitis reduces the perfusion index by 23.9%, without influence on the impaired parameters of active and passive modulation of gingival blood flow. Loading metronidazole into microcapsules with AgNP increases the effectiveness of the gel in the correction of the perfusion index by 6.7% of the amplitudes of myogenic and respiratory fluctuations by 26.8% and 19.8% compared to the analogue without active components. Conclusion. The gel containing microcapsules with AgNP and metronidazole is more effective in restoring gingival perfusion, reducing the amplitudes of myogenic and respiratory oscillations, compared to the analog without active components.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>микроциркуляция</kwd><kwd>метронидазол</kwd><kwd>пародонтит</kwd><kwd>наночастицы серебра</kwd></kwd-group><kwd-group xml:lang="en"><kwd>microcirculation</kwd><kwd>metronidazole</kwd><kwd>periodontitis</kwd><kwd>silver nanoparticles</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания ФГБОУ ВО «Саратовский государственный медицинский университет им. В. И. Разумовского» Минздрава России «Разработка и патогенетическое обоснование применения системы пролонгированного www.microcirc.ru 22 (3) / 2023 Regional blood circulation and microcirculation 83 ОРИГИНАЛЬНЫЕ СТАТЬИ (экспериментальные исследования) / ORIGINAL ARTICLES (experimental investigations) высвобождения антибактериальных и противовоспалительных веществ для коррекции микроциркуляторных нарушений при экспериментальном пародонтите».</funding-statement><funding-statement xml:lang="en">The study was performed in the framework of the state assignment of the «Saratov State Medical University named after V. I. Razumovsky» Ministry of Health of Russia «Development and pathogenetic substantiation of the use of a system of prolonged release of antibacterial and anti-inflammatory substances for the correction of microcirculatory disorders in experimental periodontitis».</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">Larvin H, Kang J, Aggarwal VR, Pavitt S, Wu J. Risk of incident cardiovascular disease in people with periodontal disease: A systematic review and meta-analysis // Clin Exp Dent Res. 2021;7(1):109–122. Doi: 10.1002/cre2.336.</mixed-citation><mixed-citation xml:lang="en">Larvin H, Kang J, Aggarwal VR, Pavitt S, Wu J. Risk of incident cardiovascular disease in people with periodontal disease: A systematic review and meta-analysis // Clin Exp Dent Res. 2021;7(1):109–122. 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