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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">nid</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология и диализ</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology and Dialysis</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1680-4422</issn><issn pub-type="epub">2618-9801</issn><publisher><publisher-name>Российское диализное общество</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.28996/2618-9801-2022-1-62-71</article-id><article-id custom-type="elpub" pub-id-type="custom">nid-57</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Фенотипическая гетерогенность синдрома Барттера</article-title><trans-title-group xml:lang="en"><trans-title>Phenotypical heterogeneity of Bartter syndrome</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>Вашурина</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vashurina</surname><given-names>T. V.</given-names></name></name-alternatives><email xlink:type="simple">tvv-09@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>Зробок</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zrobok</surname><given-names>O. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Ананьин</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ananin</surname><given-names>P. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Пушков</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pushkov</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Милованова</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Komarova</surname><given-names>O. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Комарова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Timofeeva</surname><given-names>A. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Тимофеева</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Milovanova</surname><given-names>A. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Дмитриенко</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitrienko</surname><given-names>S. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Ряпосова</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryaposova</surname><given-names>A. B.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Агаронян</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Aharonyan</surname><given-names>H. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Савостьянов</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savostyanov</surname><given-names>K. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Фисенко</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Fisenko</surname><given-names>A. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Цыгин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsygin</surname><given-names>A. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАУ «Национальный медицинский исследовательский центр здоровья детей» Министерства Здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Autonomous Institution ”National Medical Research Center for Children’s Health” of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>21</day><month>06</month><year>2024</year></pub-date><volume>24</volume><issue>1</issue><fpage>62</fpage><lpage>71</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вашурина Т.В., Зробок О.И., Ананьин П.В., Пушков А.А., Милованова А.М., Комарова О.В., Тимофеева А.Г., Дмитриенко С.В., Ряпосова А.Б., Агаронян А.Г., Савостьянов К.В., Фисенко А.П., Цыгин А.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Вашурина Т.В., Зробок О.И., Ананьин П.В., Пушков А.А., Милованова А.М., Комарова О.В., Тимофеева А.Г., Дмитриенко С.В., Ряпосова А.Б., Агаронян А.Г., Савостьянов К.В., Фисенко А.П., Цыгин А.Н.</copyright-holder><copyright-holder xml:lang="en">Vashurina T.V., Zrobok O.I., Ananin P.V., Pushkov A.A., Komarova O.V., Timofeeva A.G., Milovanova A.M., Dmitrienko S.V., Ryaposova A.B., Aharonyan H.G., Savostyanov K.V., Fisenko A.P., Tsygin 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://journal.nephro.ru/jour/article/view/57">https://journal.nephro.ru/jour/article/view/57</self-uri><abstract><p>Обоснование: синдром Барттера (гипокалиемический гипохлоремический метаболический алкалоз), является крайне редкой аутосомно-рецессивной сольтеряющей тубулопатией, обусловленной дефектом реабсорбции натрия и хлоридов в толстом восходящем колене петли Генле и дистальных извитых канальцах. В последнее время стало очевидным, что клиническая классификация синдрома Барттера не всегда соответствует клиническим симптомам, связанным с его генспецифическим типом. Так, наиболее распространенный 3 генетический тип выявляет фенотипическое разнообразие с клиническим течением не только классического, но и антенатального/неонатального синдрома Барттера или Гительман-подобного синдрома. Цель исследования: изучить фенотипическую и генотипическую изменчивость синдрома Барттера, а также взаимосвязь фенотипа и генотипа болезни с эффективностью терапии и исходами у детей. Материалы и методы: группу пациентов составили 7 детей (медиана возраста дебюта болезни 0,1 года, медиана постановки диагноза 3,0 года) от неродственных браков с клинически установленным синдромом Барттера. Артериальная гипертензия и снижение слуха отсутствовали у всех пациентов, вошедших в исследование. Результаты: путем молекулярно-генетического анализа у 5 (72%) из 7 пациентов был диагностирован синдром Барттера, тип 3 (причинные варианты в гене CLCNKB), у 1 (14%) - тип 2 (причинные варианты в гене KCNJ1), ещё у 1 ребенка исследование не завершено. Синдром Барттера, тип 3 был представлен у 3 (60%) из 5 детей - классическим, у 2 (40%) из 5 - антенатальным вариантом. Связи между типом мутации и фенотипом в группе пациентов с 3 генетическим типом не установлено, возможно, вследствие её малочисленности. Два пациента с 3 типом синдрома Барттера и миссенс-мутациями в гене CLCNKB показали прогрессию до хронической болезни почек 4 стадии спустя 6 лет и 15,5 лет от дебюта болезни. Постоянную терапию индометацином получали 3 ребенка, калия хлоридом - 7 пациентов. У всех детей достигнута стойкая компенсация водно-электролитных нарушений, кислотно-щелочного баланса. Заключение: синдром Барттера 3 типа, представленный мутациями в гене CLCNKB, является превалирующим генетическим типом и выявляет большую фенотипическую гетерогенность, которая обосновывает необходимость молекулярно-генетического исследования пациентов, в том числе с уже подтвержденным клиническим диагнозом.</p></abstract><trans-abstract xml:lang="en"><p>Background: Bartter's syndrome (hypokalemic hypochloremic metabolic alkalosis) is a very rare autosomal recessive salt-losing tubulopathy caused by a defect in sodium and chloride reabsorption in the thick ascending limb of Henle's loop and distal convoluted tubules. Recently, it has become apparent that the clinical classification of Bartter's syndrome does not always match to the clinical symptoms associated with its gene-specific type. So, the most common genetic type 3 reveals phenotypic variety with a clinical course of not only classical, but also antenatal / neonatal Bartter's syndrome or Gitelman-like syndrome. The aim of our study was to investigate the phenotypic and genotypic variability of Bartter's syndrome, as well as the relationship of the phenotype and genotype with the efficacy of therapy and outcomes in children. Materials and methods: the group of 7 children (median age of disease onset 0.1 years, median diagnosis 3.0 years) from unrelated marriages with clinically established Bartter syndrome. Arterial hypertension and hearing loss were absent in all patients included in the study. Results: 5 (72%) of 7 patients were diagnosed with Bartter syndrome type 3 (causative variants in the CLCNKB gene) using molecular genetic analysis, 1 (14%) - type 2 (causative variants in the KCNJ1 gene), and for one child a study not completed. Correlations between the type of mutations and the phenotype were not revealed in the group of patients with genetic type 3, possibly due to a small number of patients. Two patients with type 3 Bartter's syndrome and missense mutations in the CLCNKB gene showed progression to stage 4 chronic kidney disease, 6 years later and 15.5 years after the onset of the disease. Continuous therapy with indomethacin was received by 3 children, potassium chloride - 7 patients. All children achieved stable compensation of water-electrolyte disturbances, acid-base balance. Conclusion: Bartter's syndrome type 3, represented by mutations in the CLCNKB gene, is the prevailing genetic variant and reveals a great phenotypic heterogeneity, which confirm the need for molecular genetic study of patients, including those with an already confirmed clinical diagnosis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>cиндром Барттера тип 3</kwd><kwd>cиндром Барттера тип 2</kwd><kwd>ген CLCNKB</kwd><kwd>ген KCNJ1</kwd><kwd>нестероидные противовоспалительные агенты</kwd><kwd>дети</kwd><kwd>Bartter syndrome type 3</kwd><kwd>Bartter syndrome type 2</kwd><kwd>CLCNKB gene</kwd><kwd>KCNJ1 gene</kwd><kwd>non-steroidal anti-inflammatory drugs</kwd><kwd>children</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">Seyberth H.W. An improved terminology and classification of Bartter-like syndromes. Nat. Clin. Pract. 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