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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">zabmedvestnik</journal-id><journal-title-group><journal-title xml:lang="ru">Забайкальский медицинский вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Transbaikalian Medical Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">1998-6173</issn><publisher><publisher-name>Читинская государственная медицинская академия</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52485/19986173_2023_1_74</article-id><article-id custom-type="elpub" pub-id-type="custom">zabmedvestnik-127</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 ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Морфологические и иммунологические изменения тканей при экспериментальном пародонтите у крыс</article-title><trans-title-group xml:lang="en"><trans-title>Morphological and immunological changes in tissues during experimental parodontitis in rats</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>Фефелов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fefelov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>672027; ул. Угданская, 8; Чита</p></bio><bio xml:lang="en"><p>672027; 8 Ugdanskaya str.; Chita</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>Баясхаланова</surname><given-names>Ц. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Bayaskhalanova</surname><given-names>Ts. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>672000; ул. Горького, 39а; Чита</p></bio><bio xml:lang="en"><p>672000; 39 А Gorky str.; Chita</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Терешков</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Tereshkov</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>672000; ул. Горького, 39а; Чита</p></bio><bio xml:lang="en"><p>672000; 39 А Gorky str.; Chita</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фефелова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fefelova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>672000; ул. Горького, 39а; Чита</p></bio><bio xml:lang="en"><p>672000; 39 А Gorky str.; Chita</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цыбиков</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsybikov</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>672000; ул. Горького, 39а; Чита</p></bio><bio xml:lang="en"><p>672000; 39 А Gorky str.; Chita</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГАУЗ «Краевая стоматологическая поликлиника»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Regional Dental Clinic</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Читинская государственная медицинская академия» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Chita State Medical Academy</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>03</day><month>08</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>74</fpage><lpage>81</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Фефелов А.А., Баясхаланова Ц.Б., Терешков П.П., Фефелова Е.В., Цыбиков Н.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Фефелов А.А., Баясхаланова Ц.Б., Терешков П.П., Фефелова Е.В., Цыбиков Н.Н.</copyright-holder><copyright-holder xml:lang="en">Fefelov A.A., Bayaskhalanova T.B., Tereshkov P.P., Fefelova E.V., Tsybikov N.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.zabmedvestnik.ru/jour/article/view/127">https://www.zabmedvestnik.ru/jour/article/view/127</self-uri><abstract><sec><title>   Цель исследования</title><p>   Цель исследования: оценить морфологические и иммуногистохимические параметры пародонта крысы в модели экспериментального пародонтита.</p><p>   Материалы и методы исследования. Экспериментальный пародонтит формировали у самцов крыс породы Wistar в возрасте 18–20 недель и весом 200–300 г. Пародонтит моделировали путем отслойки десны концом копьевидного скальпеля (№ 11) в сочетании с инъекциями 10 % раствора этилового спирта с 0,25 % раствором новокаином в течении 7 дней. Воспалительный процесс оценивался морфологическими и гистологическими методами. В сыворотке крови и гомогенате тканей пародонта определяли уровень цитокинов с помощью системы мультиплексного анализа (США). Гистологические срезы делали на уровне резцов обеих челюстей, окрашивали гематоксилин-эозином и иммуногистохимически кроличьими моноклональными антителами (SP7). Статистическая обработка данных проводилась с использованием однофакторного дисперсионного анализа Крускал-Уолисса. Достоверность различий между группами (р) оценивали при помощи попарных сравнений Двасса-Стила-Кричлоу-Флигнера.</p><p>   Результаты исследования. На седьмые сутки эксперимента десна приобрела цианотичный оттенок, наблюдался её значительный отек. Гистологически зафиксировано наличие пародонтального кармана, инфильтрация тканей лейкоцитами, макрофагами, фибробластами, утолщение слоя эпителия десны, разрушение периодонта и резорбция костных балок альвеол. Отмечался рост уровня цитокинов у крыс, в большей степени в сыворотке крови. Наиболее выраженный приростзарегистрирован у TNFα и IFN γ, а минимальное увеличение отмечалось со стороны IL 6. Выявлено, что число макрофагов и B-лимфоцитов увеличилось одинаково в 8,5 раз (р = 0,000001), количество Т- лимфоцитов возросло в 5,5 раз (р = 0,000001).</p></sec><sec><title>   Заключение</title><p>   Заключение. В модели хронического пародонтита нами показано, что наблюдается активация всех звеньев иммунной системы, с преобладанием гуморального звена иммунной системы, проявляющаяся возрастанием уровней цитокинов как в сыворотке крови, так и тканях и увеличением числа иммунокомпетентных клеток в тканях пародонта.</p></sec></abstract><trans-abstract xml:lang="en"><p>   The purpose of the study: to evaluate the morphological and immunohistochemical parameters of the rat periodontium in the model of experimental periodontitis.</p><sec><title>   Materials and methods</title><p>   Materials and methods. Experimental periodontitis was formed in male Wistar rats aged 18–20 weeks and weighing 200–300 g. Periodontitis was modeled by detaching the gums with the end of a spear-shaped scalpel (No. 11) in combination with injections of 10 % ethanol solution with 0.25 % novocaine solution in within 7 days. The inflammatory process was assessed morphologically and histologically. In blood serum and homogenate of periodontal tissues, the level of cytokines was determined using a multiplex analysis system (USA). Histological sections were made at the level of the incisors of both jaws, stained with hematoxylin-eosin and immunohistochemically with rabbit monoclonal antibodies (SP7). Statistical data processing was carried out using one-way Kruskal-Walliss analysis of variance. Significance of differences between groups (p) was assessed using pairwise comparisons of Dwass-Steele-Critchlow-Fligner.</p></sec><sec><title>   Research results</title><p>   Research results. On the seventh day of the experiment, the gum acquired a cyanotic hue, its significant edema was observed. Histologically, the presence of a periodontal pocket, infiltration of tissues with leukocytes, macrophages, fibroblasts, thickening of the gingival epithelium, destruction of the periodontium and resorption of the bone beams of the alveoli were recorded. There was an increase in the concentrations of cytokines in rats, to a greater extent in the blood serum. The most pronounced increase was in TNFα and IFN γ, the minimum increase was observed in IL 6. It was found that the number of macrophages and B-lymphocytes increased equally by 8.5 times (p = 0.000001), the number of T-lymphocytes increased by 5.5 times (p = 0.000001).</p></sec><sec><title>   Conclusion</title><p>   Conclusion. In the model of chronic periodontitis, we have shown that there is activation of all parts of the immune system, with a predominance of the humoral part of the immune system, manifested by an increase in the levels of cytokines both in blood serum and tissues and an increase in the number of immunocompetent cells in periodontal tissues.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>экспериментальный пародонтит</kwd><kwd>цитокины</kwd><kwd>иммуногистохимия</kwd><kwd>ответ иммунной системы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>experimental periodontitis</kwd><kwd>cytokines</kwd><kwd>immunohistochemistry</kwd><kwd>immune response</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование не имело финансовой поддержки</funding-statement><funding-statement xml:lang="en">The study had no financial support</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">Richards D. 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