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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">anatomy</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал анатомии и гистопатологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Anatomy and Histopathology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2225-7357</issn><publisher><publisher-name>N.N. Burdenko Voronezh State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18499/2225-7357-2025-14-2-53-62</article-id><article-id custom-type="elpub" pub-id-type="custom">anatomy-2102</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 PAPERS</subject></subj-group></article-categories><title-group><article-title>Постнатальное развитие поясничного парааортального параганглия</article-title><trans-title-group xml:lang="en"><trans-title>Postnatal Development of the Lumbar Para-Aortic Paraganglion</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4907-7757</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кемоклидзе</surname><given-names>К. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kemoklidze</surname><given-names>K. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кемоклидзе Константин Гербертович – канд. биол. наук, доцент, доцент кафедры гистологии, цитологии и эмбриологии</p><p>ул. Революционная, 5, Ярославль, 150000</p></bio><bio xml:lang="en"><p>Konstantin G. Kemoklidze – Cand. Sci. (Biol.), Associate Professor at the Department of Histology, Cytology, and Embryology</p><p>ul. Revolyutsionnaya, 5, Yaroslavl, 150000</p></bio><email xlink:type="simple">K_G_K@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ярославский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Yaroslavl State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>22</day><month>07</month><year>2025</year></pub-date><volume>14</volume><issue>2</issue><fpage>53</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кемоклидзе К.Г., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кемоклидзе К.Г.</copyright-holder><copyright-holder xml:lang="en">Kemoklidze K.G.</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://anatomy.elpub.ru/jour/article/view/2102">https://anatomy.elpub.ru/jour/article/view/2102</self-uri><abstract><p>К настоящему времени накопился ряд противоречивых данных, касающихся не только сроков и характера, но и самого факта возрастной инволюции самого крупного из вненадпочечниковых хромаффинных параганглиев – поясничного парааортального параганглия (ППП, орган Цукер- кандля). Цель исследования – изучить особенности возрастных преобразований ППП в постнатальном онтогенезе. Материал и методы. Гистологическими и гистохимическими методами на полных серийных срезах изучены органные комплексы области залегания ППП крыс в основные периоды постнатального онтогенеза (0–1, 7–8, 14, 21 суток, 1, 3, 6–8, 14 месяцев и 2 года). Результаты. У всех новорожденных животных присутствует хорошо развитый ППП, содержащий массивы хромаффинных клеток с умеренной хромаффинной реакцией и разнородные группы малодифференцированных клеток. С конца 1-й постнатальной недели размеры и количество хромаффиноцитов в ППП уменьшаются (по ряду признаков путем аутофагии), а присутствие нервных клеток увеличивается. Это ведет к превращению ППП в смешанный хромаффино-нервный, затем в типичный нервный узел. К 1-му месяцу хромаффиноциты в области ППП полностью исчезают. Начиная с 3 месяцев в нервных узлах этой области вторично появляются группы хромаффиноцитов с интенсивной хромаффинной реакцией, и далее их количество и размеры растут до глубокой старости. Мы связываем причины возрастной инволюции ППП с активизацией в тот же период созревания мозгового вещества надпочечника, а вторичное появление и гипертрофию хромаффинноцитов в области ППП – с усилением стрессовых воздействий при взрослении и ослаблением функции сердечно-сосудистой системы при старении. Оба фактора вызывают подъем уровня глюкокортикоидов, являющихся стимуляторами пролиферации вненадпочечниковой хромаффинной ткани. Заключение. ППП крыс с 1-й по 4-ю постнатальную неделю демонстрируют выраженную возрастную инволюцию, сопровождаемую замещением хромаффинной ткани нервной. После завершения возрастной инволюции ППП в нервных узлах этой области вторично появляются скопления хромаффиноцитов, прогрессирующие по мере взросления и старения организма.</p></abstract><trans-abstract xml:lang="en"><p>So far, a number of contradictory data have accumulated regarding not only the timing and characteristics, but also the very fact of age-related involution of the largest of the extra-adrenal chromaffin paraganglia – the lumbar para-aortic paraganglion (LPP, organ of Zuckerkandl). The aim is to investigate the features of age-related transformations of the LPP in postnatal ontogenesis. Material and methods. Using histological and histochemical methods on complete serial sections, the organ complexes of the area of location of the LPP of rats in the main periods of postnatal ontogenesis (0–1, 7–8, 14, 21 days, 1, 3, 6–8, 14 months and 2 years). Results. All newborn animals have a well-developed LPP, which contains arrays of chromaffin cells with a moderate chromaffin reaction and heterogeneous groups of slightly differentiated cells. The size and number of chromaffin cells in the LPP decrease (according to a number of signs via autophagy) while the presence of nerve cells increases from the end of the 1st postnatal week. This leads to the transformation of the LPP into a mixed chromaffin-nerve ganglion, then into a typical nerve ganglion. Chromaffin cells in the LPP area completely disappear by the 1st month. Groups of chromaffin cells with intense chromaffin reaction reappear in the LPP area nerve ganglia starting from 3 months, then their number and size increase until old age. We associate the causes of age-related LPP involution with the activation of adrenal medulla maturation during the same period and the secondary appearance and hypertrophy of chromaffin cells in the LPP area with increased stress effects during maturation and weakening of the cardiovascular system during aging. Both factors cause an increase in the level of glucocorticoids which are stimulators of the proliferation of extra-adrenal chromaffin tissue. Conclusion. The rat LPP demonstrate a pronounced age-related involution, accompanied by the replacement of chromaffin tissue by nervous tissue from the 1st to the 4th postnatal weeks. After the completion of age-related involution of the LPP, clusters of chromaffin cells appear for the second time in the nerve ganglia of this area, progressing as growing up and ages.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>параганглий</kwd><kwd>орган Цукеркандля</kwd><kwd>возрастная инволюция</kwd><kwd>хромаффинная ткань</kwd><kwd>хромаффиноциты</kwd><kwd>аутофагия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>paraganglia</kwd><kwd>organ of Zuckerkandl</kwd><kwd>age-related involution</kwd><kwd>chromaffin cells</kwd><kwd>autophagy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Бондаренко Н.С., Муртазина А.Р., Дильмухаметова Л.К. Иконописцева М.А., Волина Е.В., Угрюмов М.В. Секреторная активность мозга и периферических органов: спонтанное и стимулированное выделение норадреналина в онтогенезе крыс. 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