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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">Molekulyarnaya Meditsina (Molecular medicine)</journal-id><journal-title-group><journal-title xml:lang="en">Molekulyarnaya Meditsina (Molecular medicine)</journal-title><trans-title-group xml:lang="ru"><trans-title>Молекулярная медицина</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-2918</issn><issn publication-format="electronic">2499-9490</issn><publisher><publisher-name xml:lang="en">Russkiy Vrach Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">113583</article-id><article-id pub-id-type="doi">10.29296/24999490-2022-02-08</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">Decrease in ANG and VEGF mRNA levels during progressive angiogenesis of the liver venous system of Wistar rats in experimental cirrhosis</article-title><trans-title-group xml:lang="ru"><trans-title>Взаимное снижение уровня мРНК ANG и VEGF при прогрессирующем ангиогенезе венозной системы печени крыс Wistar в экспериментальном циррозе</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lebedeva</surname><given-names>Elena Ivanovna</given-names></name><name xml:lang="ru"><surname>Лебедева</surname><given-names>Елена Ивановна</given-names></name></name-alternatives><bio xml:lang="en"><p>Associate Professor of the Department of Histology, Cytology and Embryology; Associate Professor, PhD</p></bio><bio xml:lang="ru"><p>доцент кафедры гистологии, цитологии и эмбриологии; Доцент, кандидат биологических наук</p></bio><email>lebedeva.ya-elenale2013@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shchastny</surname><given-names>Anatoly Tadeushevich</given-names></name><name xml:lang="ru"><surname>Щастный</surname><given-names>Анатолий Тадеушевич</given-names></name></name-alternatives><bio xml:lang="en"><p>rector, Head of the Chair of Hospital Surgery with the course of the Faculty for Advanced Training &amp; Retraining; Doctor of Medical Sciences, professor.</p></bio><bio xml:lang="ru"><p>Профессор, доктор медицинских наук.</p></bio><email>admin@vsmu.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Babenko</surname><given-names>Andrey Sergeevich</given-names></name><name xml:lang="ru"><surname>Бабенко</surname><given-names>Андрей Сергеевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Associate Professor of the Department of Bioorganic chemistry; PhD.</p></bio><bio xml:lang="ru"><p>доцент кафедры биоорганической химии; Кандидат химических наук</p></bio><email>labmdbt@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Vitebsk State Order of Peoples’ Friendship Medical University</institution></aff><aff><institution xml:lang="ru">Витебский государственный ордена Дружбы народов медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Belarussian State Medical University</institution></aff><aff><institution xml:lang="ru">Белорусский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-02-15" publication-format="electronic"><day>15</day><month>02</month><year>2022</year></pub-date><volume>20</volume><issue>2</issue><issue-title xml:lang="en">VOL 20, NO2 (2022)</issue-title><issue-title xml:lang="ru">ТОМ 20, №2 (2022)</issue-title><fpage>53</fpage><lpage>62</lpage><history><date date-type="received" iso-8601-date="2022-11-18"><day>18</day><month>11</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Russkiy Vrach Publishing House</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, ИД "Русский врач"</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Russkiy Vrach Publishing House</copyright-holder><copyright-holder xml:lang="ru">ИД "Русский врач"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2027-02-15"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/1728-2918/article/view/113583">https://journals.eco-vector.com/1728-2918/article/view/113583</self-uri><abstract xml:lang="en"><p>Introduction. Currently, understanding the molecular mechanisms of pathological angiogenesis remains a fundamental problem in hepatology. The aim of this work was to find a relationship between the level of mRNA expression of the ang, vegf genes and angiogenesis in the liver of Wistar rats in experimental cirrhosis. Methods. The experiment used 117 sexually mature male Wistar rats weighing from 190-210g. Liver cirrhosis in animals was induced with a solution of thioacetamide, which was introduced into the stomach using a probe at a dose of 200 mg/kg of animal body weight 2 times a week. The dynamics of the process was studied at nine time points (over 17 weeks). The level of mRNA expression of the ang and vegf genes in the liver was studied by real-time polymerase chain reaction. To obtain overview histological preparations, liver sections were stained with hematoxylin and eosin, and to identify connective tissue - by the Mallory method. Microscopic analysis was performed using an OLYMPUS BX51 microscope and ImageScope Color and cellSens Standard image analysis programs. The degree offlbrosis was assessed using the Ishak K.G. Conclusion. A statistically significant relationship was established between the level of expression of the total mRNA of target genes, angiogenesis of the venous system, and fibrogenesis. No pronounced morphological changes were observed on the part of the liver arterial system throughout the experiment; arterial angiogenesis was not identified. Probably, the spliced forms of mRNA of the ang and vegf genes estimated by us are more important factors in the pathological angiogenesis of the venous system. Significant correlations were found between target genes r=0.65-0.84 (splice variants that were investigated). The joint study of genes with respect to each other is a necessary additional parameter when conducting basic and preclinical research.</p></abstract><trans-abstract xml:lang="ru"><p>Введение. В настоящее время понимание молекулярных механизмов патологического ангиогенеза остается фундаментальной проблемой в гепатологии. Цель работы состояла в поиске связи между уровнем экспрессии мРНК генов ang, vegf и ангиогенезом в печени крыс Wistar в экспериментальном циррозе. Материал и методы. В эксперименте использовали 117половозрелых крыс-самцов Wistar массой тела от 190-210 г. Цирроз печени у животных индуцировали раствором тиоацетамида, который вводили в желудок с помощью зонда в дозе 200 мг/кг массы тела животного 2 раза в неделю. Динамику процесса изучали в девяти временных точках (в течение 17 нед). Методом полимеразной цепной реакции в режиме реального времени в печени исследовали уровень экспрессии мРНК генов ang и vegf. Для получения обзорных гистологических препаратов срезы печени окрашивали гематоксилином и эозином, а для выявления соединительной ткани - методом Маллори. Микроскопический анализ проводили с использованием микроскопа OLYMPUS BX51 и программ анализа изображений ImageScope Color и cellSens Standard. Степень фиброза оценивали с использованием полуколичественной шкалы Ishak K.G. Заключение. Установлена статистически значимая зависимость между уровнем экспрессии суммарной мРНК генов-мишеней, ангиогенезом венозной системы и фиброгенезом. Со стороны артериальной системы печени на протяжении всего эксперимента выраженных морфологических изменений не отмечено, т.е. артериальный ангиогенез не выявлен. Вероятно, сплайс формы мРНК генов ang и vegf изученные в рамках данного исследования являются более важными факторами при патологическом ангиогенезе венозной системы. Между генами-мишенями выявлены значимые корреляционные связи r=0,65-0,84 (сплайс варианты, которые были исследованы). Совместное относительно друг друга изучение генов является необходимым дополнительным параметром при проведении фундаментальных и доклинических исследований.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rats</kwd><kwd>liver cirrhosis</kwd><kwd>ang and vegf genes</kwd><kwd>stages of fibrosis</kwd><kwd>angiogenesis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>крысы</kwd><kwd>цирроз печени</kwd><kwd>гены ang и vegf</kwd><kwd>стадии фиброза</kwd><kwd>ангиогенез</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lafoz E., Ruart M., Anton A., Oncins A., Hernanadez-Gea V. The endothelium as a driver of liver fibrosis and regeneration. Cells. 2020; 9 (4): 929. https://doi.org/10.3390/cells9040929.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Yang X., Wang Z., Kai J., Wang F., Jia Y., Wang S., Tan S., Shen X., Chen A., Shao J., Zhang F., Zhang Z., Zheng S. 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