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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">pediatricjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Архив педиатрии и детской хирургии</journal-title><trans-title-group xml:lang="en"><trans-title>Archives of Pediatrics and Pediatric Surgery</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-4664</issn><issn pub-type="epub">3033-6783</issn><publisher><publisher-name>НИКИ детства Минздрава Московской области</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/2949-4664-apps-2-2-47-54</article-id><article-id custom-type="elpub" pub-id-type="custom">pediatricjournal-82</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>НЕОНАТОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>NEONATOLOGY</subject></subj-group></article-categories><title-group><article-title>Эндокринопатия вследствие дефицита пропротеинковертазы 1/3: демонстрация клинического случая с проявлениями в виде первичной энтеропатии (мальабсорбтивной осмолярной диареи), несахарного диабета, вторичного гипотиреоза</article-title><trans-title-group xml:lang="en"><trans-title>Endocrinopathy due to proproteinkovertase 1/3 deficiency: primary enteropathy, diabetes insipidus, secondary hypothyroidism</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3804-7691</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белоусова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belousova</surname><given-names>T. V.</given-names></name></name-alternatives><email xlink:type="simple">belousovatv03@yandex.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/0000-0001-9707-0491</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гринберг</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Grinberg</surname><given-names>I. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0003-4154-2431</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрюшина</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Andryushina</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-6201-0507</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новосельцева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Novoseltseva</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7199-2161</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никулина</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikulina</surname><given-names>A. B.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский государственный медицинский университет» Министерства здравоохранения Российской Федерации; Государственное Бюджетное Учреждение Здравоохранения Новосибирской Области «Государственная Новосибирская областная клиническая больница»<country>Россия</country></aff><aff xml:lang="en">Novosibirsk State Medical University; State Novosibirsk Regional Clinical Hospital<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Государственное Бюджетное Учреждение Здравоохранения Новосибирской Области «Государственная Новосибирская областная клиническая больница»<country>Россия</country></aff><aff xml:lang="en">State Novosibirsk Regional Clinical Hospital<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский государственный медицинский университет» Министерства здравоохранения Российской Федерации<country>Россия</country></aff><aff xml:lang="en">Novosibirsk State Medical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>15</day><month>09</month><year>2024</year></pub-date><volume>2</volume><issue>2</issue><fpage>47</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Белоусова Т.В., Гринберг И.Г., Андрюшина И.В., Новосельцева А.А., Никулина А.Б., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Белоусова Т.В., Гринберг И.Г., Андрюшина И.В., Новосельцева А.А., Никулина А.Б.</copyright-holder><copyright-holder xml:lang="en">Belousova T.V., Grinberg I.G., Andryushina I.V., Novoseltseva A.A., Nikulina A.B.</copyright-holder><license 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.nikid.ru/jour/article/view/82">https://journal.nikid.ru/jour/article/view/82</self-uri><abstract><p>Дефицит пропротеинконвертазы 1/3 (PC1/3) - аутосомно-рецессивное заболевание, вызываемое редкими мутациями вгене пропротеинконвертазы субтилизин/кексин 1-го типа (proprotein convertase subtilisin / kexin type 1 (PCSK 1)), ассоциированное стяжелой мальабсорбтивной диареей, ожирением инекоторыми эндокринными аномалиями. Пропротеинконвертаза 1/3 представляет собой кальций-зависимую сериновую эндопротеазу, участвующую впротеолитическом процессинге различных прогормонов (пептидных гормонов вэнтероэндокринных клетках, которые необходимы для усвоения питательных веществ, атакже экспрессируется вдугообразных ипаравентрикулярных ядрах гипоталамуса, вбета-клетках поджелудочной железы) вих биоактивные формы. Дебют заболевания внеонатальном периоде жизни характеризуется клиникой тяжелой мальабсорбционной диареи, сопровождается задержкой вразвитии, требует длительного парентерального питания. По мере прогрессирования заболевания развиваются дополнительные эндокринные нарушения, включая такие, как несахарный диабет, дефицит гормона роста, первичный гипогонадизм, надпочечниковую недостаточность, гипотиреоз иожирение. Мы провели проспективное наблюдение пациента сподтвержденным впроцессе динамического наблюдения генетическим заболеванием вследствие дефицита пропротеинконвертазы 1/3. Пациентка находилась на обследовании илечении вГБУЗ НСО «ГНКОБ» г.Новосибирска втечение 11 месяцев, сповторными (3-х кратными) госпитализациями. Цель: продемонстрировать особенности дебюта итечения заболевания, атакже сложности на пути верификации клинического диагноза ультраредкого генетического заболевания из категории эндокринопатий, сложности медицинского сопровождения итерапии. Особенностью данного случая является то обстоятельство, что выявленная мутация вгене ранее не была зарегистрирована вконтрольных Российских выборках генетической мутации дефицита пропротеинконвертазы 1/3, атакже ранее не описанный вариант нуклеотидной последовательности в4 экзоне гена PCSK1 вгетерозиготном состоянии ине зарегистрирован вконтрольных выборках gnomAD иRUSeq. Дефицит пропротеинконвертазы 1/3 - заболевание, которое является мультидисциплинарной проблемой, так как этиопатогенетическая терапия до сих пор не разработана. Заболевание имеет хронический характер течения спостоянными рецидивами кишечного синдрома, сложно управляется симптоматическими средствами лечения ипо мере прогрессирования имеет высокий риск развития дополнительных эндокринопатий илетального исхода. Все вышеизложенное подчеркивает необходимость ранней постановки диагноза иподбора рациональной как заместительной, так исопроводительной терапии, позволяющих сохранять жизнь пациентов.</p></abstract><trans-abstract xml:lang="en"><p>Proprotein convertase 1/3 (PC1/3) deficiency is an autosomal recessive disease caused by rare mutations in the proprotein convertase subtilisin/kexin type 1 (PCSK 1)gene, associated with severe malabsorptive diarrhea, obesity and some endocrine abnormalities. Proprotein convertase 1/3 is acalcium-dependent serine endoprotease involved in the proteolytic processing of various prohormones (peptide hormones in enteroendocrine cells that are necessary for the absorption of nutrients and is also expressed in the arcuate and paraventricular nuclei of the hypothalamus, in the beta cells of the pancreas) in their bioactive forms. The onset of the disease in the neonatal period of life is characterized by aclinical picture of severe malabsorption diarrhea, accompanied by developmental delays, and requires long-term parenteral nutrition. As the disease progresses, additional endocrine abnormalities develop, including diabetes insipidus, growth hormone deficiency, primary hypogonadism, adrenal insufficiency, hypothyroidism, and obesity. We conducted aprospective observation of apatient with agenetic disease due to proprotein convertase 1/3 deficiency confirmed during follow-up. The patient was examined and treated at the State Novosibirsk Regional Clinical Hospital in Novosibirsk for 11 months, with repeated (3-fold) hospitalizations. Purpose: to demonstrate the features of the onset and course of the disease, as well as the difficulties in verifying the clinical diagnosis of an ultra-rare genetic disease from the category of endocrinopathies, the complexity of medical support and therapy. Apeculiarity of this case is the fact that the identified mutation in the gene was not previously registered in control Russian samples of the genetic mutation of proprotein convertase 1/3 deficiency, as well as apreviously undescribed variant of the nucleotide sequence in exon 4 of the PCSK1 gene in aheterozygous state and was not registered in control samples gnomAD and RUSeq. Proprotein convertase 1/3 deficiency is adisease that is amultidisciplinary problem, since etiopathogenetic therapy has not yet been developed. The disease has achronic course with constant relapses of intestinal syndrome, is difficult to manage with symptomatic treatments and, as it progresses, has ahigh risk of developing additional endocrinopathies and death. All of the above emphasizes the need for early diagnosis and selection of rational replacement and accompanying therapy to save the lives of patients.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дефицит пропротеинконвертазы 1/3</kwd><kwd>эндокринопатия</kwd><kwd>кишечный синдром</kwd><kwd>первичная энтеропатия</kwd><kwd>мальабсорбционная диарея</kwd><kwd>неонатальный период</kwd></kwd-group><kwd-group xml:lang="en"><kwd>proprotein convertase 1/3 deficiency</kwd><kwd>endocrinopathy</kwd><kwd>intestinal syndrome</kwd><kwd>primary enteropathy</kwd><kwd>malabsorption diarrhea</kwd><kwd>theneonatal period</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">Duggan C.P., Jaksic T. Pediatric Intestinal Failure. N Engl J Med. 2017 Aug 17;377(7):666-675. doi: 10.1056/NEJMra1602650.</mixed-citation><mixed-citation xml:lang="en">Duggan C.P., Jaksic T. 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