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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Morphology</journal-id><journal-title-group><journal-title xml:lang="en">Morphology</journal-title><trans-title-group xml:lang="ru"><trans-title>Морфология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1026-3543</issn><issn publication-format="electronic">2949-2556</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">398783</article-id><article-id pub-id-type="doi">10.17816/morph.398783</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">MORPHOLOGICAL AND IMMUNOHISTOCHEMICAL CHARACTERISTICS OF THE THYMUS DURING CHEMICAL CARCINOGENESIS INDUCED BY 1,2-DIMETHYLHYDRAZINE ADMINISTRATION</article-title><trans-title-group xml:lang="ru"><trans-title>МОРФОЛОГИЧЕСКАЯ И ИММУНОГИСТОХИМИЧЕСКАЯ ХАРАКТЕРИСТИКА ТИМУСА ПРИ ХИМИЧЕСКОМ КАНЦЕРОГЕНЕЗЕ, ВЫЗВАННОМ ВВЕДЕНИЕМ 1,2-ДИМЕТИЛГИДРАЗИНА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Struchko</surname><given-names>G. Yu.</given-names></name><name xml:lang="ru"><surname>Стручко</surname><given-names>Глеб Юрьевич</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра нормальной и топографической анатомии с оперативной хирургией</p></bio><email>glebstr@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Merkulova</surname><given-names>L. M.</given-names></name><name xml:lang="ru"><surname>Меркулова</surname><given-names>Лариса Михайловна</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра нормальной и топографической анатомии с оперативной хирургией</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Moskvichyov</surname><given-names>Ye. V.</given-names></name><name xml:lang="ru"><surname>Москвичев</surname><given-names>Евгений Васильевич</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра нормальной и топографической анатомии с оперативной хирургией</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">I. N. Ulyanov Chuvash State University</institution></aff><aff><institution xml:lang="ru">Чувашский государственный университет им. И. Н. Ульянова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2014-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2014</year></pub-date><volume>146</volume><issue>5</issue><issue-title xml:lang="en">VOL 146, NO5 (2014)</issue-title><issue-title xml:lang="ru">ТОМ 146, №5 (2014)</issue-title><fpage>35</fpage><lpage>39</lpage><history><date date-type="received" iso-8601-date="2023-05-09"><day>09</day><month>05</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2014, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2014, Эко-Вектор</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://j-morphology.com/1026-3543/article/view/398783">https://j-morphology.com/1026-3543/article/view/398783</self-uri><abstract xml:lang="en"><p>The aim of the study was to examine the histological and immunohistochemical characteristics of the thymus 5 months after the intraperitoneal administration of the carcinogen (1,2-dimethylhydrazine in the dose of 20 mg/kg once a week for 2 weeks). The study was conducted on 50 outbred albino male rats. Paraffin sections of the thymus were stained with hematoxylin-eosin and were processed by an immunohistochemical method using antibodies against CD3, CD30, CD68, synaptophysin, S-100 protein, p53, bcl-2, Ki-67, as well as against IgM and IgG. It was found that carcinogen administration resulted in the increased number of thymic cells expressing bcl-2, S-100 and Ki-67, active T-lymphocytes and thymopoietic microenvironment cells, as well as in the change of the correlation between medullary and cortical CD3 +-thymocytes with a predominance of the latter. Thus, the malignant tumor, developing in the colon, on the one hand, inhibits the supply of the precursors of thymopoiesis to the thymus, while on the other - enhances the proliferation and differentiation of thymocytes into mature forms</p></abstract><trans-abstract xml:lang="ru"><p>Цель исследования - изучение гистологической и иммуногистохимической характеристики тимуса через 5 мес после внутрибрюшинного введения канцерогена (1,2-диметилгидразина в дозе 20 мг/кг 1 раз в неделю в течение 2 нед). Исследования проведены на 50 белых нелинейных крысах-самцах. Парафиновые срезы тимуса окрашивали гематоксилином - эозином и обрабатывали иммуногистохимическим методом с использованием антител к CD3, CD30, CD68, синаптофизину, белкам S-100, p53, bcl-2, Ki-67, а также к IgM и IgG. Установлено, что введение канцерогена приводит к увеличению в тимусе числа клеток, экспрессирующих bcl-2, S-100 и Ki-67, активных Т-лимфоцитов и клеток тимопоэтического микроокружения, изменению соотношения между CD3 +-тимоцитами мозгового и коркового вещества с преобладанием последних. Таким образом, развивающаяся в толстой кишке опухоль, с одной стороны, угнетает поступление предшественников тимопоэза в тимус, с другой - усиливает пролиферацию и дифференцировку тимоцитов в зрелые формы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thymus</kwd><kwd>involution</kwd><kwd>apoptosis. carcinogenesis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>тимус</kwd><kwd>инволюция</kwd><kwd>апоптоз</kwd><kwd>канцерогенез</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Барышников А. Ю. Взаимодействие опухоли и иммунной системы. 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