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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/probl12360</article-id><article-id custom-type="elpub" pub-id-type="custom">problendo-12360</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>Детская эндокринология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Pediatric Endocrinology</subject></subj-group></article-categories><title-group><article-title>Анализ композиционного состава тела, основного обмена и частоты метаболических нарушений у подростков с синдромом Клайнфельтера</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of body composition, resting metabolic rate and frequency of metabolic disorders in adolescents with Klinefelter syndrome</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4900-6652</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Беспалюк</surname><given-names>Дарья Алексеевна</given-names></name><name name-style="western" xml:lang="en"><surname>Bespalyuk</surname><given-names>Daria A.</given-names></name></name-alternatives><bio xml:lang="en"><p>MD</p></bio><email xlink:type="simple">dariabespalyuk@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9834-727X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Окороков</surname><given-names>Павел Леонидович</given-names></name><name name-style="western" xml:lang="en"><surname>Okorokov</surname><given-names>Pavel L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н.</p></bio><bio xml:lang="en"><p>MD, PhD</p></bio><email xlink:type="simple">pokorokov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4915-1267</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чугунов</surname><given-names>Игорь Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Chugunov</surname><given-names>Igor S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н.</p></bio><bio xml:lang="en"><p>MD, PhD</p></bio><email xlink:type="simple">chugunovigor@gmail.com</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 эндокринологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Endocrinology Research Centre</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>08</month><year>2020</year></pub-date><volume>66</volume><issue>2</issue><fpage>71</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Беспалюк Д.А., Окороков П.Л., Чугунов И.С., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Беспалюк Д.А., Окороков П.Л., Чугунов И.С.</copyright-holder><copyright-holder xml:lang="en">Bespalyuk D.A., Okorokov P.L., Chugunov I.S.</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/12360">https://www.probl-endojournals.ru/jour/article/view/12360</self-uri><abstract><sec><title>ОБОСНОВАНИЕ</title><p>ОБОСНОВАНИЕ. Синдром Клайнфельтера (СК) – распространенное генетическое заболевание, характеризующееся гипергонадотропным гипогонадизмом. Высокий риск развития метаболических нарушений у пациентов с СК может объясняться наличием андрогенного дефицита, что приводит к снижению количества тощей массы и увеличению содержания жировой ткани в организме. Скорость основного обмена (ОО) определяется количеством тощей массы, а его снижение может способствовать набору веса и прогрессированию метаболических нарушений при СК.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Анализ композиционного состава тела, оценка ОО и метаболического профиля у подростков с СК.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. В исследование были включены 28 подростков с СК, сопоставимых по возрасту и стадии полового развития. Все пациенты были разделены на две группы в зависимости от наличия клинико-лабораторных признаков гипогонадизма. Пациентам были проведены оценка метаболического профиля, биоимпедансометрия для анализа композиционного состава тела и непрямая респираторная калориметрия для оценки ОО.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. У 20 (71,4%) подростков определились нормальные показатели композиционного состава тела, избыток жировой массы – у 6 (21,4%) пациентов, дефицит жировой массы – в 7,2% случаев. Среди 6 пациентов с избытком жировой массы у трех отмечалось ожирение или избыточная масса тела, остальные имели нормальный SDS индекса массы тела (ИМТ). У 64,3% подростков выявлены нормальные показатели энергообмена в покое, у 6 (21,4%) – снижение скорости ОО, у 4 (14,3%) – повышение скорости ОО. При сравнительном анализе групп пациентов не выявлено статистически значимых различий по показателю ОО с поправкой на тощую массу (ОО/ТМ) (р=0,36). Инсулинорезистентность выявлена у 11 пациентов (39,3%), частота дислипидемии составила 3,6%. По уровням гликемии натощак и показателям липидного профиля исследуемые группы значимо не различались.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. У большинства подростков с СК определяются нормальные показатели композиционного состава тела и основного обмена, а также низкая частота метаболических нарушений, независимо от уровня общего тестостерона в крови. У части пациентов с нормальным SDS ИМТ выявляется избыток жировой массы. Отсутствие взаимосвязи уровня тестостерона с интенсивностью ОО может свидетельствовать о незначительном влиянии андрогенного дефицита на энергообмен в покое у подростков с СК.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>BACKGROUND</title><p>BACKGROUND: Kleinfelter syndrome (KS) is a common genetic disease characterized by hypergonadotropic hypogonadism. The high risk of developing of metabolic disorders in patients with KS is be explained by the presence of androgen deficiency, which leads to a decrease in the amount of lean soft mass and an increase of the adipose tissue content. The basal metabolic rate (BMR) is determined by the amount of lean soft mass, and its reduction can contribute to weight gain and the progression of metabolic disorders in KS.</p></sec><sec><title>AIM</title><p>AIM: Body composition, assessment of basal metabolism and metabolic profile in adolescents with KS.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: The study included 28 adolescents with KS, comparable in age and stage of sexual maturation. All patients were divided into two groups depending on the presence of clinical laboratory signs of hypogonadism. Patients passed through the evaluation of metabolic profile, bioelectrical impedance analysis for the body composition and chamber-based indirect calorimetry for the evaluation of BMR.</p></sec><sec><title>RESULTS</title><p>RESULTS: Normal indicants of body composition were determined in 20 (71.4%) adolescents, excess of adipose mass – in 6 (21.4%) patients, and deficit of adipose mass – in 7.2% of cases. Among 6 patients with excess of adipose mass, three were obese or overweight, while the rest had normal SDS body mass index (BMI). 64.3% of adolescents showed normal indicants of energy exchange at rest, 6 (21.4%) – a decrease of BMR, 4 (14.3%) - an increase of BMR. A comparative analysis of patient groups did not reveal statistically significant differences in BMR adjusted to a lean soft mass (OO/TM) (p=0.36). Insulin resistance was detected in 11 patients (39.3%), and the incidence of dyslipidemia was 3.6%. The groups did not significantly differ in terms of glycemia levels in the fasted state and lipid profile indicants.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION: Most adolescents with KS have normal indicants of body composition and basal metabolism, as well as a low frequency of metabolic disorders, regardless of the level of total testosterone in blood. In some patients with normal SDS BMI, excess of adipose mass is detected. The lack of correlation between the level of testosterone and the intensity of BMR may indicate a slight effect of androgen deficiency on energy exchange at rest in adolescents with KS.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром Клайнфельтера</kwd><kwd>основной обмен</kwd><kwd>композиционный состав тела</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Kleinfelter syndrome</kwd><kwd>basal metabolism</kwd><kwd>body composition</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Фонд поддержки и развития филантропии «КАФ» в рамках благотворительной программы «Альфа-Эндо».</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Salzano A, D’Assante R, Heaney LM, et al. Klinefelter syndrome, insulin resistance, metabolic syndrome, and diabetes: review of literature and clinical perspective. 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