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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">10.24884/1561-6274-2018-22-6-70-76</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-1630</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>БЕЛОК KLOTHO, ФАКТОР РОСТА ФИБРОБЛАСТОВ 23 И ПОЧЕЧНАЯ ЭКСКРЕЦИЯ КАЛЬЦИЯ НА НАЧАЛЬНЫХ СТАДИЯХ ЭКСПЕРИМЕНТАЛЬНОЙ ХРОНИЧЕСКОЙ БОЛЕЗНИ ПОЧЕК</article-title><trans-title-group xml:lang="en"><trans-title>KLOTHO PROTEIN, FIBROBLAST GROWTH FACTOR 23 AND RENAL CALCIUM EXCRETION IN INITIAL STAGES OF EXPERIMENTAL CHRONIC KIDNEY DISEASE</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>Богданова</surname><given-names>E. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogdanova</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Богданова Евдокия Олеговна, лаборатория биохимического гомеостаза.</p><p>Тел.: (812) 338-69-31.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Bogdanova Evdokia.</p><p>Phone (812) 338-69-31.</p></bio><email xlink:type="simple">evdokia.bogdanova@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Галкина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Galkina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Галкина Ольга Владимировна, канд. биол. наук, лаборатория биохимического гомеостаза.</p><p>Тел.: (812) 338-69-31.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Olga V. Galkina PhD, head.</p><p>Phone (812) 338-69-31.</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>Зубина</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zubina</surname><given-names>I. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Зубина Ирина Михайловна, канд. биол. наук, лаборатория биохимического гомеостаза.</p><p>Тел.: (812) 338-69-31.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Irina M. Zubina PhD.</p><p>Phone (812) 338-69-31.</p></bio><email xlink:type="simple">zubina@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Береснева</surname><given-names>О. H.</given-names></name><name name-style="western" xml:lang="en"><surname>Beresneva</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Береснева Ольга Николаевна, канд. биол. наук, лаборатория клинической физиологии почки.</p><p>Тел.: (812) 338-69-31.</p><p> </p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Olga N. Beresneva PhD, Laboratory of Kidney Clinical Physiology.</p><p>Phone (812) 338-69-31.</p></bio><email xlink:type="simple">beresnevaolga@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>199034, Санкт-Петербург, наб. Макарова, д. 6.</p><p>Иванова Галина Тажимовна, канд. биол. наук.</p><p>Тел.: (812) 328-11-01.</p></bio><bio xml:lang="en"><p>199034, Санкт-Петербург, наб. Макарова, д. 6.</p><p>Galina T. Ivanova PhD.</p><p>Phone (812) 328-11-01.</p></bio><email xlink:type="simple">pavlov.institute@infran.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парастаева</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Parastaeva</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Парастаева Марина Магрезовна, канд. биол. наук, лаборатория клинической физиологии почки.</p><p>Тел.: (812) 338-69-01.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Marina M. Parastaeva PhD, Laboratory of Kidney Clinical Physiology.</p><p>Phone (812) 338-69-01.</p></bio><email xlink:type="simple">beresnevaolga@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каюков</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kayukov</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Проф. Каюков Иван Глебович, д-р мед. наук, лаборатория клинической физиологии почки.</p><p>Тел.: (812) 338-69-01.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Prof. Ivan G. Kayukov, MD, PhD, DSc, Laboratory of Kidney Clinical Physiology, head.</p><p>Phone (812) 338-69-01.</p></bio><email xlink:type="simple">kvaka55@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Добронравов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobronravov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, Россия, Санкт-Петербург, ул. Л. Толстого, д. 17, корп. 54.</p><p>Проф. Добронравов Владимир Александрович, д-р мед. наук, заместитель директора.</p><p>Тел.: (812) 338-69-01.</p></bio><bio xml:lang="en"><p>197022 Russia, St. Petersburg, L. Tolstoy st., 17, build. 54.</p><p>Prof. Vladimir A. Dobronravov, MD, PhD, DSc, Vice Director.</p><p>Phone (812) 338-69-01.</p></bio><email xlink:type="simple">dobronravov@nephrolog.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт нефрологии Научно-клинического исследовательского центра Первого Санкт-Петербургского медицинского университета им. акад. И.П. Павлова.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Nephrology Pavlov First Saint Petersburg State Medical University.</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Лаборатория физиологии сердечно-сосудистой и лимфатической системы&#13;
Института физиологии им. И.П. Павлова РАН.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Laboratory of cardiovascular and lymphatic systems physiology Pavlov Institute of Physiology RAS.</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>23</day><month>12</month><year>2018</year></pub-date><volume>22</volume><issue>6</issue><fpage>70</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Богданова E.О., Галкина О.В., Зубина И.М., Береснева О.H., Иванова Г.Т., Парастаева М.М., Каюков И.Г., Добронравов В.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Богданова E.О., Галкина О.В., Зубина И.М., Береснева О.H., Иванова Г.Т., Парастаева М.М., Каюков И.Г., Добронравов В.А.</copyright-holder><copyright-holder xml:lang="en">Bogdanova E., Galkina O.V., Zubina I.M., Beresneva O.N., Ivanova G.T., Parastaeva M.M., Kayukov I.G., Dobronravov V.A.</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/1630">https://journal.nephrolog.ru/jour/article/view/1630</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. Фактор роста фибробластов 23 (FGF23) и его ко-рецептор Klotho могут быть связаны с изменениями кальциевого обмена при хронической болезни почек (ХБП) благодаря способности регулировать внутриклеточный транспорт Ca за счет модуляции катионных каналов TRPV5/ TRPV6.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ: установить, связаны ли Klotho и FGF23 с ренальной экскрецией Са на начальных стадиях экспериментальной ХБП.</p></sec><sec><title>МАТЕРИАЛ И МЕТОДЫ</title><p>МАТЕРИАЛ И МЕТОДЫ. Для моделирования ХБП у крыс линии SHR выполняли резекцию 3/4 или 5/6 почек. Определяли концентрации интактных FGF23 и PTH в сыворотке крови методом ИФА и экспрессию белка Klotho в почке методом ИГХ, а также рассчитывали экскретируемую фракцию (FECa) и абсолютную экскрецию (UCa24) Ca с мочой.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Концентрация креатинина в сыворотке крови, его клиренс и выраженность интерстициального фиброза у экспериментальных моделей соответствовали начальным стадиям хронического повреждения почек. UCa24 и FECa были выше, экспрессия Klotho ниже в группах с более выраженной дисфункцией почек без достоверных различий в уровнях FGF23 и РТН. При множественном регрессионном анализе FECa и UCa24 не были ассоциированы с FGF23, Klotho и РТН.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Ренальная экскреция Са в условиях начальных стадий экспериментальной дисфункции почек не зависит от Klotho и FGF23.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. It is suggested that fibroblast growth factor 23 (FGF23) and its co-receptor Klotho are probably associatedwith changes in calcium metabolism in chronic kidney disease (CKD) due to ability to regulate intracellular Ca transport bymodulating the cationic channels TRPV5 and TRPV6.</p><p>THE AIM is to investigate the association between Klotho, FGF23 and renal excretion of Ca in the initial stages of experimental CKD.</p></sec><sec><title>MATERIAL AND METHODS</title><p>MATERIAL AND METHODS. The experimental models of chronic kidney injury were resection of the renal tissue in spontaneously hypertensive rats (SHR). Serum concentrations of intact FGF23 and PTH were determined by ELISA, renal Klotho protein expression by IHC. The indices of Ca excretion were calculated.</p></sec><sec><title>RESULTS</title><p>RESULTS. Serum creatinine concentration, creatinine clearance and the severity of interstitial fibrosis in experimental models corresponded to the initial stages of chronic kidney disease. UCa24 and FECa were higher, Klotho protein expression was lower in groups with more severe renal dysfunction, without significant differences in FGF23 and PTH levels. Multiple regression analysis showed that FECa and UCa24 were not associated with FGF23, Klotho, and PTH.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION. Renal excretion of Ca in initial stages of experimental kidney damage is not associated with Klotho and FGF23 levels.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>белок Klotho</kwd><kwd>фактор роста фибробластов 23</kwd><kwd>ренальная экскреция кальция</kwd><kwd>гипертензия</kwd><kwd>хроническая болезнь почек</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Klotho protein</kwd><kwd>fibroblast growth factor 23</kwd><kwd>renal excretion of calcium</kwd><kwd>hypertension</kwd><kwd>chronic kidney disease</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">Kuro-o M, Matsumura Y, Aizawa H et al. Mutation of the mouse klotho gene leads to a syndrome resembling ageing. Nature 1997;390:45–51. Doi: 10.1038/36285</mixed-citation><mixed-citation xml:lang="en">Kuro-o M, Matsumura Y, Aizawa H et al. Mutation of the mouse klotho gene leads to a syndrome resembling ageing. 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