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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="other" 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">399482</article-id><article-id pub-id-type="doi">10.17816/morph.399482</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">CONTRACTION OF THE INJURED NEURONAL PROCESSES</article-title><trans-title-group xml:lang="ru"><trans-title>СОКРАЩЕНИЕ ТРАВМИРОВАННЫХ ОТРОСТКОВ НЕРВНЫХ КЛЕТОК</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vasyagina</surname><given-names>N Yu</given-names></name><name xml:lang="ru"><surname>Васягина</surname><given-names>Н Ю</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лаборатория функциональной морфологии и физиологии нейрона (зав. - проф. О.С. Сотников); Институт физиологии им. И.П. Павлова РАН</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sotnikov</surname><given-names>O S</given-names></name><name xml:lang="ru"><surname>Сотников</surname><given-names>О С</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лаборатория функциональной морфологии и физиологии нейрона (зав. - проф. О.С. Сотников); Институт физиологии им. И.П. Павлова РАН</p></bio><email>sotnikov@kolt.infran.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gendina</surname><given-names>E A</given-names></name><name xml:lang="ru"><surname>Гендина</surname><given-names>Е А</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лаборатория функциональной морфологии и физиологии нейрона (зав. - проф. О.С. Сотников); Институт физиологии им. И.П. Павлова РАН</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Vasyagina</surname><given-names>N Yu</given-names></name><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name><surname>Sotnikov</surname><given-names>O S</given-names></name><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name><surname>Gendina</surname><given-names>Ye A</given-names></name><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">Институт физиологии им. И.П. Павлова РАН</institution></aff></aff-alternatives><aff id="aff2"><institution></institution></aff><pub-date date-type="pub" iso-8601-date="2011-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2011</year></pub-date><volume>139</volume><issue>2</issue><issue-title xml:lang="en">NO2 (2011)</issue-title><issue-title xml:lang="ru">№2 (2011)</issue-title><fpage>31</fpage><lpage>35</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 ©; 2011, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2011, Эко-Вектор</copyright-statement><copyright-year>2011</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/399482">https://j-morphology.com/1026-3543/article/view/399482</self-uri><abstract xml:lang="en"><p>The investigation was performed on the isolated living neurons of a mollusk (Lymnaea stagnalis). The purpose of this study was to examine the contractile activity of the injured neuronal processes. Retraction of latter in Ringer's solution was found in 90% of the cases. The specific club-shaped structure (retraction bulb) served as a marker of contraction. The speed of process contraction fluctuated in different neurons from 0.03 to 9 μm/ min. As a result of usual linear contraction, the process diameter was increased on the average by 35%, while the cell body volume was increased on the average by 30%. The three forms of contractile activity were distinguished: linear contraction, isometric contraction (reduction of a process thickness with no change in its length) and mixed form of contraction. It is suggested that the mechanism of retraction takes part in the formation of diastasis after nerve sectioning and injury of the brain conducting pathways. Diastasis in the nerve is formed not only due to the elastic properties of its fibrous sheath and glia, but also as a result of nerve fiber retraction.</p></abstract><trans-abstract xml:lang="ru"><p>Исследования проводили на живых изолированных нейронах моллюска (Lymnaea stagnalis). Целью исследования было изучение сократительной активности травмированных отростков нейронов. Ретракция последних в растворе Рингера была обнаружена в 90% случаев. Маркером сокращения служило характерное булавовидное образование, колба ретракции. Скорость сокращения отростков колебалась у разных нейронов от 0,03 до 9 мкм/мин. Увеличение диаметра отростка при обычном линейном сокращении происходило в среднем на 35%, а увеличение объёма тела клетки - в среднем на 30%. Были выделены 3 формы сократительной активности: линейное сокращение, изометрическое сокращение (уменьшение толщины отростка при неизмененной его длине) и смешанная форма сокращения. Высказано предположение, что механизм ретракции участвует в формировании диастаза при перерезке нервов и при повреждении проводящих путей мозга. Диастаз нерва формируется не только за счёт эластических свойств его соединительнотканных оболочек и глии, но и за счёт ретракции нервных волокон.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Limnaea stagnalis</kwd><kwd>isolated living neurons</kwd><kwd>cell processes</kwd><kwd>retraction</kwd><kwd>Limnaea stagnalis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>изолированные живые нейроны</kwd><kwd>отростки</kwd><kwd>ретракция</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Сотников О.С. Статика и структурная кинетика живых асинаптических дендритов. СПб., Наука, 2008.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Сотников О.С., Васягина Н.Ю., Рыбакова Г.И. и Чепур С.В. 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