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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">10.24884/1561-6274-2007-11-1-92-99</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-759</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>РОЛЬ  РЕНИН-АНГИОТЕНЗИНОВОЙ  СИСТЕМЫ  И  ЦИКЛА  ОКСИДА  АЗОТА  В  ПАТОГЕНЕЗЕ  ГИПЕРТИРЕОИДНОЙ  ПОЧКИ</article-title><trans-title-group xml:lang="en"><trans-title>ROLE OF THE  RENIN-ANGIOTENSINE SYSTEM AND  NITROGEN  OXIDE  CYCLE  IN  PATHOGENESIS OF  HYPERTHYROID  KIDNEY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Запорожан</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaporozhan</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра общей и клинической патофизиологии</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Доломатов</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Dolomatov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра общей и клинической патофизиологии</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Одесский государственный медицинский университет</institution><country>Ukraine</country></aff><pub-date pub-type="collection"><year>2007</year></pub-date><pub-date pub-type="epub"><day>10</day><month>01</month><year>2007</year></pub-date><volume>11</volume><issue>1</issue><fpage>92</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Запорожан В.Н., Доломатов С.И., 2007</copyright-statement><copyright-year>2007</copyright-year><copyright-holder xml:lang="ru">Запорожан В.Н., Доломатов С.И.</copyright-holder><copyright-holder xml:lang="en">Zaporozhan V.N., Dolomatov S.I.</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/759">https://journal.nephrolog.ru/jour/article/view/759</self-uri><abstract><p>ЦЕЛЬ ИССЛЕДОВАНИЯ. Изучение роли ренин-ангиотензиновой системы и цикла оксида азота в патогенезе гипертиреоидной почки на раннем временном отрезке моделирования экспериментального гипертиреоза у белых крыс, вызванного введением тироксина. МАТЕРИАЛ И МЕТОДЫ. Тироксин (Т4) по 50 мкг/100 г м.т. вводили внутрижелудочно на 1% крахмальном геле однократно или на протяжении 5 и 7 сут. Кроме того, на фоне однократного введения Т4 вводили раствор аскорбиновой кислоты (0,2 мг/100 г м.т.) за 30 мин до водной нагрузки или в течение 24 ч с момента введения Т4 выпаивали раствором каптоприла (50 мг/л). После 5-сут. введения Т4 крыс также выпаивали раствором лозартана (10 мг/л) в течение 24 ч с момента последнего введения Т4. Крысам, получавших Т4 в течение 7 сут., назначали L-аргинин по 2 мг/100 г м.т. в сут., или выпаивали раствором (20 мг/л) нитрита натрия. Крысам контрольной группы животных в течение 7 сут. внутрижелудочно вводили гель, не содержащий Т4. Деятельность почек изучали через 24 ч после завершения введения Т4 в условиях 5% водной нагрузки. РЕЗУЛЬТАТЫ. Установлено, что блокаторы РАС повышают величину клиренса креатинина после однократного и продолжительного введения крысам Т4, однако снижение выделения почками крыс эндогенных нитратов и белка, а также предотвращение ретенции эндогенных нитритов регистрируется только при назначении животным лозартана через 5 сут. после введения Т4. Продолжительное введение крысам Т4 сопровождается ослаблением ренальных эффектов NO и переключением аргинин-зависимого пути синтеза NO на нитрит-редуктазный, о чем свидетельствует повышение уровня эндогенных нитритов в плазме крови крыс, продолжительно получавших Т4, отсутствие выраженного корригирующего нефротропного эффекта экзогенного аргинина у гипертиреоидных животных и нарастание клиренса креатинина под влиянием экзогенного нитрита натрия в группе гипертиреоидных животных. ЗАКЛЮЧЕНИЕ. Полученные результаты свидетельствуют о существенной роли ренин-ангиотензиновой системы и цикла оксида азота в патогенезе развития «гипертиреоидной почки».</p></abstract><trans-abstract xml:lang="en"><p>THE AIM of the investigation was to study the role of renin-angiotensine system (RAS) and nitrogen oxide cycle in pathogenesis of hyperthyroid kidney at an early time period of modeling experimental hyperthyroidism in albino rats caused by administration of thyroxin. MATERIAL AND METHODS. Thyroxin (T4) in dose 50 mkg/100 g of body mass was administered into the stomach in 1% starch gel once or during 5 and 7 days. In addition, against the background of a single administration of T4 a solution of ascorbic acid (0.2 mg/100 g b.m.) was given 30 min before water load, or during 24 h from the moment of administration of T4 the rats were given to drink a solution of Captopril (50 mg/l). After 5 days of administration of T4 the rats were also given to drink a solution of Lozartan (10 mg/l) during 24 h from the moment of the last administration of T4. The rats given T4 during 7 days were given L-arginine in dose 2 mg/100 g b.m. a day, or given to drink a solution of sodium nitrite (20 mg/l). The control group rats were given gel not containing T4 administered into the stomach during 7 days. The functioning of the kidneys was studied within 24 h after discontinuation of giving T4 under conditions of 5% water load. RESULTS. It was established that RAS blockers increased the value of creatinin clearance after a single and continuous administration of T4 to rats, but decreased excretion by the rats’ kidneys of endogenous nitrates and protein as well as prevention of endogenous nitrites retention was registered only when the animals were given Lozartan in 5 days after administration of T4. Continuous administration of T4 to rats was followed by weaker effects of NO and redirection of the arginine-dependent way of NO synthesis to the nitrite-reductase one, which is shown by increased level of endogenous nitrites in blood plasma of the rats continuously given T4, the absence of a pronounced correcting nephrotropic effect of exogenous arginin in hyperthyroid animals and growth of creatinin clearance under the influence of exogenous sodium nitrite in the group of hyperthyroid animals. CONCLUSION. The results obtained show a substantial role of RAS and nitrogen oxide cycle in pathogenesis of the development of “hyperthyroid kidney”.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ренин-ангиотензиновая система</kwd><kwd>оксид азота</kwd><kwd>тироксин</kwd><kwd>почки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>renin-angiotensine system</kwd><kwd>nitrogen oxide</kwd><kwd>thyroxin</kwd><kwd>kidneys</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">Kobori H, Ichihara A, Miyashita Y et al. Mechanism of hyperthyroidism-induced renal hypertrophy in rats. J Endocrinol 1998; 159(1): 9-14</mixed-citation><mixed-citation xml:lang="en">Kobori H, Ichihara A, Miyashita Y et al. Mechanism of hyperthyroidism-induced renal hypertrophy in rats. 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