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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">problendo</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Эндокринологии</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Endocrinology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0375-9660</issn><issn pub-type="epub">2308-1430</issn><publisher><publisher-name>Endocrinology Research Centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14341/probl13235</article-id><article-id custom-type="elpub" pub-id-type="custom">problendo-13235</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>Клиническая эндокринология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Clinical endocrinology</subject></subj-group></article-categories><title-group><article-title>Синдром переустановки осмостата — когда гипонатриемия становится «нормой»: аспекты диагностики, описание клинического случая</article-title><trans-title-group xml:lang="en"><trans-title>Reset osmostat syndrome — when hyponatremia become «a normal»: diagnostics, case report</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4480-1902</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Астафьева</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Astafyeva</surname><given-names>L. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Астафьева Людмила Игоревна, д.м.н.</p><p>SPIN-код: 4209-4723</p><p>Москва</p></bio><bio xml:lang="en"><p>Ludmila I. Astafyeva, MD, PhD</p><p>SPIN-код: 4209-4723</p><p>Moscow</p></bio><email xlink:type="simple">imandzhieva@nsi.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/0000-0003-2211-4298</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бадмаева</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Badmaeva</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бадмаева Инна Николаевна</p><p>SPIN-код: 4859-1181</p><p>Москва, 125047, ул. 4-я Тверская-Ямская, д. 16</p></bio><bio xml:lang="en"><p>Inna N. Badmaeva</p><p>SPIN-код: 4859-1181</p><p>16, 4th Tverskaya-Yamskaya street, Moscow 125047</p></bio><email xlink:type="simple">inna_mandzhieva@mail.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/0000-0002-7440-4687</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клочкова</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Klochkova</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клочкова Ирина Сергеевна</p><p>SPIN-код: 8313-0190</p><p>Москва</p></bio><bio xml:lang="en"><p>Irina S. Klochkova</p><p>SPIN-код: 8313-0190</p><p>Moscow</p></bio><email xlink:type="simple">IKlochkova@nsi.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/0000-0003-2733-5874</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сиднева</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Sidneva</surname><given-names>Yu. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сиднева Юлия Геннадьевна, к.м.н.</p><p>SPIN-код: 5128-9059</p><p>Москва</p></bio><bio xml:lang="en"><p>Yuliya G. Sidneva, PhD</p><p>SPIN-код: 5128-9059</p><p>Moscow</p></bio><email xlink:type="simple">ysidneva@nsi.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3777-5662</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарипов</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharipov</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шарипов Олег Ильдарович, к.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Oleg I. Sharipov, PhD</p><p>Moscow</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>Гаджиева</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gadjieva</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гаджиева Ольга Александровна, к.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Olga A. Gadjieva, PhD</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5559-2678</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баширян</surname><given-names>Б. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bashiryan</surname><given-names>B. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баширян Борис Аванесович</p><p>Москва</p></bio><bio xml:lang="en"><p>Boris A. Bashiryan</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9333-9473</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калинин</surname><given-names>П. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalinin</surname><given-names>P. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калинин Павел Львович, д.м.н.</p><p>SPIN-код: 1775-7421</p><p>Москва</p></bio><bio xml:lang="en"><p>Pavel L. Kalinin, MD, PhD</p><p>SPIN-код: 1775-7421</p><p>Moscow</p></bio><email xlink:type="simple">PKalinin@nsi.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/0000-0003-2595-5877</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лубнин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Lubnin</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лубнин Андрей Юрьевич, д.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Andrey Y. Lubnin</p><p>Moscow</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>Коновалов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Konovalov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коновалов Александр Николаевич, д.м.н., проф., академик РАН</p><p>Москва</p></bio><bio xml:lang="en"><p>Aleksandr N. Konovalov</p><p>Moscow</p></bio><email xlink:type="simple">imandzhieva@nsi.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр нейрохирургии имени академика Н.Н. Бурденко</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Burdenko Neurosurgery Center</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр нейрохирургии имени академика Н.Н. Бурденко; Научно-исследовательский институт неотложной детской хирургии и травматологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Burdenko Neurosurgery Center; Clinical and Research Institute of Emergency Pediatric Surgery and Trauma</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>11</day><month>11</month><year>2023</year></pub-date><volume>69</volume><issue>5</issue><fpage>65</fpage><lpage>72</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Астафьева Л.И., Бадмаева И.Н., Клочкова И.С., Сиднева Ю.Г., Шарипов О.И., Гаджиева О.А., Баширян Б.А., Калинин П.Л., Лубнин А.Ю., Коновалов А.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Астафьева Л.И., Бадмаева И.Н., Клочкова И.С., Сиднева Ю.Г., Шарипов О.И., Гаджиева О.А., Баширян Б.А., Калинин П.Л., Лубнин А.Ю., Коновалов А.Н.</copyright-holder><copyright-holder xml:lang="en">Astafyeva L.I., Badmaeva I.N., Klochkova I.S., Sidneva Y.G., Sharipov O.I., Gadjieva O.A., Bashiryan B.A., Kalinin P.L., Lubnin A.Y., Konovalov A.N.</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://www.probl-endojournals.ru/jour/article/view/13235">https://www.probl-endojournals.ru/jour/article/view/13235</self-uri><abstract><p>Синдром переустановки осмостата (СПО) характеризуется изменением нормального порога осмоляльности плазмы (уменьшением или повышением), что приводит к развитию хронической диснатриемии (гипо- или гипернатриемии). Мы описали клинический случай развития СПО, сопровождающегося хронической гипонатриемией, у пациентки с хордоидной глиомой III желудочка. Известно, что у пациентки ранее выявлялась гипонатриемия (131–134 ммоль/л). В ходе обследования были исключены гипотиреоз и гипокортицизм. Подтверждена сохранная фильтрационная функция почек (расчетная скорость клубочковой фильтрации CKD-EPI 91,7 мл/мин/1,73 м2). Для исключения нарушения концентрационной функции почек исследованы осмоляльность и уровень натрия мочи. Также были использованы расчетные формулы натрийуреза, которые показали отсутствие повышенной почечной экскреции натрия. В первые 3 сут после удаления опухоли третьего желудочка (хордоидная глиома, WHO Grade II) уровень натрия снизился до 119 ммоль/л; неоднократные инфузии гипертонического 3% раствора натрия хлорида в объеме 200–300 мл, глюко- и минералокортикоидная терапия не дали значимого эффекта, повышая показатели натрия плазмы на 2–3 ммоль/л с возвращением к исходному уровню в течение 6–8 ч. Гипопитуитарные нарушения после операции не развились. При дальнейшем наблюдении в течение 6 мес после операции уровень натрия сохранялся в пределах 126–129 ммоль/л. Проба с водной нагрузкой позволила исключить классический синдром неадекватной секреции антидиуретического гормона и подтвердила диагноз СПО. Учитывая отсутствие клинических симптомов, связанных с гипонатриемией, медикаментозной коррекции не потребовалось, пациентке рекомендовано дальнейшее амбулаторное наблюдение.</p></abstract><trans-abstract xml:lang="en"><p>Reset osmostat syndrome (ROS) is characterized by a change of normal plasma osmolality threshold (decrease or increase), which leads to chronic dysnatremia (hypo- or hypernatremia). We have described a clinical case of ROS and chronic hyponatremia in a patient with chordoid glioma of the III ventricle. It is known that the patient had previously been diagnosed with hyponatremia (131–134 mmol/l). She has not hypothyroidism and hypocorticism. There is normal filtration function of the kidneys was (CKD-EPI 91.7 ml/mi/1,73m2). Urine osmolality and sodium level were studied to exclude of concentration kidney function disorder. During first three days after removal of the tumor of the third ventricle (chordoid glioma, WHO Grade II), the sodium level decreased to 119 mmol/l. Repeated infusions of 200–300 ml hypertonic 3% sodium chloride solution, gluco- and mineralocorticoid therapy was ineffective, increasing plasma sodium levels by 2–3 mmol/l with the return to the initial level during 6–8 hours. Hypopituitary disorders did not develop after surgery. With further observation, the sodium level remained within 126–129 mmol/l for 6 months after surgery. The water load test make exclude the classic syndrome of inappropriate secretion of antidiuretic hormone, and confirmed the diagnosis of RSO. Because of absence of clinical symptoms associated with hyponatremia, no medical correction was required, patient was recommended to clinical follow-up.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сброс осмостата</kwd><kwd>гипонатриемия</kwd><kwd>гипернатриемия</kwd><kwd>осмоляльность</kwd><kwd>натрий</kwd><kwd>синдром неадекватной секреции антидиуретического гормона</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reset osmostat</kwd><kwd>hyponatremia</kwd><kwd>hypernatremia</kwd><kwd>osmolality</kwd><kwd>sodium</kwd><kwd>syndrome of innapropriate secretion of antidiuretic hormone</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по инициативе авторов без привлечения финансирования</funding-statement></funding-group></article-meta></front><back><ref-list><ref id="cit1"><mixed-citation publication-type="commun" publication-format="web"><name><surname>Peng Goh</surname> <given-names>K.</given-names></name> <article-title>Water and sodium balance 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