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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">nefr</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology (Saint-Petersburg)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-6274</issn><issn pub-type="epub">2541-9439</issn><publisher><publisher-name>Pavlov First Saint-Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36485/1561-6274-2020-24-4-87-92</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-1863</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 INVESTIGATION</subject></subj-group></article-categories><title-group><article-title>Экспериментальная нефрэктомия: почки и состояние мозговой микроциркуляции</article-title><trans-title-group xml:lang="en"><trans-title>5/6 nephrectomy: renal tissue regeneration and condition of brain microcirculation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7483-1080</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколова</surname><given-names>И. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolova</surname><given-names>I. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколова Ирина Борисовна, канд. биол. наук, лаборатория физиологии сердечно-сосудистой и лимфатической систем, старший научный сотрудник</p><p>199034, Санкт-Петербург, наб. Макарова, д. 6</p><p>Тел.: +7(812)707-15-53 </p></bio><bio xml:lang="en"><p>Irina B. Sokolova, PhD, senior researcher, Laboratory of physiology of cardiovascular and lymphatic systems</p><p>199034, St. Petersburg, Makarova Emb., 6</p><p>Phone: +7(812)707-15-53</p></bio><email xlink:type="simple">SokolovaIB@infran.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0188-5173</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>Г. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>G. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванова Галина Тажимовна, канд. биол. наук, лаборатория физиологии сердечно-сосудистой и лимфатической систем, старший научный сотрудник</p><p>199034, Санкт-Петербург, наб. Макарова, д. 6. Институт физиологии им. И. П. Павлова РАН</p><p>Тел.: +7(812)328-07-01 (доб. 119) </p></bio><bio xml:lang="en"><p>Galina T. Ivanova, PhD, senior researcher, Laboratory of physiology of cardiovascular and lymphatic systems</p><p>199034, St. Petersburg, Makarova Emb., 6</p><p>Phone: +7(812)328-07-01 (ext. 119)</p></bio><email xlink:type="simple">tazhim@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физиологии им. И.П. Павлова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.P. Pavlov Institute of Physiology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>26</day><month>06</month><year>2020</year></pub-date><volume>24</volume><issue>4</issue><fpage>87</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Соколова И.Б., Иванова Г.Т., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Соколова И.Б., Иванова Г.Т.</copyright-holder><copyright-holder xml:lang="en">Sokolova I.B., Ivanova G.T.</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://journal.nephrolog.ru/jour/article/view/1863">https://journal.nephrolog.ru/jour/article/view/1863</self-uri><abstract><p>ЦЕЛЬ ИССЛЕДОВАНИЯ: выяснить, достаточен ли уровень регенерации почечной ткани после нефрэктомии 5/6 массы почек для предотвращения патологического ухудшения микроциркуляции в коре головного мозга.  МАТЕРИАЛЫ И МЕТОДЫ. Методом прижизненной микроскопии исследовали плотность микрососудистой сети пиальной оболочки коры головного мозга у крыс Вистар через 4 мес после удаления 5/6 массы почечной ткани. Одновременно методом лазерной допплеровской флоуметрии в ткани коры измеряли уровень перфузии и насыщения кислородом (SO2). Для оценки степени регенерации почки после резекции проводили морфологическое исследование тканей почек при окраске препаратов гематоксилином–эозином и по Массону.  РЕЗУЛЬТАТЫ. Показано, что через 4 мес после нефрэктомии в пиальной оболочке плотность микрососудистой сети снижалась в среднем в 1,3 раза по сравнению с ложнооперированными животными, а количество артериальных сосудов – в 1,5 раза. Статистически значимо снижался уровень тканевой перфузии (в среднем на 20%) и SO2 (в среднем с 95 до 91%). На морфологических препаратах отсутствовали признаки истиной регенерации; выявили гипертрофию клубочков, развитие фиброза, деформацию сосудов и тубулярных структур.  ЗАКЛЮЧЕНИЕ. Регенерации почки через 4 мес после удаления 5/6 массы почечной ткани недостаточна для нормализации ее функции и, следовательно, не предотвращает нарушения мозгового кровообращения. В коре головного мозга крыс после 5/6 нефрэктомии наблюдаются значительные нарушения микроциркуляции: уменьшение плотности микрососудистой сети, снижение скорости мозгового кровотока и тканевой сатурации кислородом, что является признаками формирования лакунарных инсультов.</p></abstract><trans-abstract xml:lang="en"><p>THE AIM. To find out if the level of regeneration of renal tissue after nephrectomy 5/6 kidney mass is sufficient to prevent pathological deterioration of microcirculation in the cerebral cortex.  MATERIAL AND METHODS. The method of intravital microscopy was used to study the density of the microvascular network of the pial sheath of the cerebral cortex in Wistar rats 4 months after the removal of 5/6 of the renal tissue mass. At the same time, the level of perfusion and oxygen saturation (SO2) were measured in the cortical tissue using laser Doppler flowmetry. To assess the degree of kidney regeneration after resection, a morphological study of kidney tissue was carried out when staining with hematoxylin-eosin and Masson.  RESULTS. It was shown that 4 months after nephrectomy in the pial membrane, the density of the microvascular network decreased by an average of 1.3 times compared with falsely operated animals, and the number of arterial vessels by 1.5 times. The level of tissue perfusion (on average by 20%) and SO2 (on average from 95 to 91%) decreased statistically significantly. On morphological preparations, there were no signs of true regeneration; revealed glomerular hypertrophy, the development of fibrosis, deformation of blood vessels, and tubular structures.  CONCLUSION. Renal regeneration 4 months after nephrectomy 5/6 kidney mass is insufficient to normalize its function, and therefore does not prevent the cerebrovascular accident. Significant microcirculation disorders are observed in rat cerebral cortex: a decrease in the density of the microvascular network, a decrease in the rate of cerebral blood flow and tissue oxygen saturation, which are signs of the formation of lacunar strokes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нефрэктомия</kwd><kwd>регенерация</kwd><kwd>микроциркуляция</kwd><kwd>плотность микрососудистой сети</kwd><kwd>тканевая перфузия</kwd><kwd>тканевое насыщение кислородом</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nephrectomy</kwd><kwd>regeneration</kwd><kwd>microcirculation</kwd><kwd>microvascular network density</kwd><kwd>tissue perfusion</kwd><kwd>tissue oxygen saturation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РФФИ (№ 19-015-00047).</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">Клинические рекомендации по диагностике и лечению рака почки. 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