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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">ppharm</journal-id><journal-title-group><journal-title xml:lang="ru">Педиатрическая фармакология</journal-title><trans-title-group xml:lang="en"><trans-title>Pediatric pharmacology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1727-5776</issn><issn pub-type="epub">2500-3089</issn><publisher><publisher-name>Издательство «ПедиатрЪ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15690/pf.v22i6.2994</article-id><article-id custom-type="elpub" pub-id-type="custom">ppharm-2729</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>ОРИГИНАЛЬНАЯ  СТАТЬЯ</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>Диагностическая значимость человеческого богатого лейцином альфа-2-гликопротеина в сыворотке крови как неинвазивного биомаркера тяжести воспалительных заболеваний кишечника у детей</article-title><trans-title-group xml:lang="en"><trans-title>Alpha-2 Glycoprotein in Serum as Noninvasive Biomarker of Inflammatory Bowel Diseases Severity in Children</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3697-4283</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сурков</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Surkov</surname><given-names>Andrey N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сурков Андрей Николаевич - заведующий отделением, врач-гастроэнтеролог отделения гастроэнтерологии с дневным стационаром Стационара для детей, заведующий отделом научных основ детской гастроэнтерологии, гепатологии и метаболических нарушений НИИ педиатрии и охраны здоровья детей НКЦ №2 ФГБНУ «РНЦХ им. акад. Б.В. Петровского», профессор кафедры факультетской педиатрии Института материнства и детства Российского национального исследовательского медицинского университета им. Н.И. Пирогова (Пироговский Университет).</p><p>117593, Москва, Литовский бул., д. 1А, тел.: +7 (916) 656-31-27</p></bio><bio xml:lang="en"><p>MD, PhD.</p><p>1А, Litovskij boulevard, Moscow, 117593</p></bio><email xlink:type="simple">surkov@gastrockb.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/0000-0001-8311-9506</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордеева</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeeva</surname><given-names>Olga B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гордеева Ольга Борисовна – к.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>MD, PhD.</p><p>Moscow</p></bio><email xlink:type="simple">obr@yandex.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>Краснова</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasnova</surname><given-names>Olga E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Краснова Ольга Евгеньевна</p><p>Иваново</p></bio><bio xml:lang="en"><p>MD.</p><p>Ivanovo</p></bio><email xlink:type="simple">o-e-k@mail.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/0009-0008-0449-2053</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фатуллаев</surname><given-names>С. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Fatullaev</surname><given-names>Sadig T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фатуллаев Садиг Талех оглы</p><p>Москва</p></bio><bio xml:lang="en"><p>MD.</p><p>Moscow</p></bio><email xlink:type="simple">dr.sadig@gastrockb.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/0009-0005-8188-9589</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Изотова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Izotova</surname><given-names>Natalya A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Изотова Наталья Александровна</p><p>Москва</p></bio><bio xml:lang="en"><p>MD.</p><p>Moscow</p></bio><email xlink:type="simple">izotova@gastrockb.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/0000-0001-5549-857X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бессонов</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Bessonov</surname><given-names>Evgeniy E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бессонов Евгений Евгеньевич</p><p>Москва</p></bio><bio xml:lang="en"><p>MD.</p><p>Moscow</p></bio><email xlink:type="simple">bessonov@gastrockb.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/0009-0004-0583-8010</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джгаркава</surname><given-names>И.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzharkava</surname><given-names>Irine</given-names></name></name-alternatives><bio xml:lang="ru"><p>Джгаркава Ирине</p><p>Москва</p></bio><bio xml:lang="en"><p>MD.</p><p>Moscow</p></bio><email xlink:type="simple">irinedzharkava@yandex.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/0000-0001-8116-598X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Доброток</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobrotok</surname><given-names>Albina V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доброток Альбина Витальевна</p><p>Москва</p></bio><bio xml:lang="en"><p>MD.</p><p>Moscow</p></bio><email xlink:type="simple">dobrotokav@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-3355-4823</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гусейнова</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Guseynova</surname><given-names>Albina D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гусейнова Альбина Джейхуновна – студентка.</p><p>Москва</p></bio><bio xml:lang="en"><p>Student.</p><p>Moscow</p></bio><email xlink:type="simple">goosealbina@yandex.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-2758-6729</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Руднева</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudneva</surname><given-names>Mariya S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Руднева Мария Сергеевна – студентка.</p><p>Москва</p></bio><bio xml:lang="en"><p>Student.</p><p>Moscow</p></bio><email xlink:type="simple">mashaa.rudneva@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-8349-4286</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильяшенко</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Il’yashenko</surname><given-names>Elizaveta N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильяшенко Елизавета Никитична - студентка.</p><p>Москва</p></bio><bio xml:lang="en"><p>Student.</p><p>Moscow</p></bio><email xlink:type="simple">liza.ilyashenko.02@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2209-7531</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Намазова-Баранова</surname><given-names>Л. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Namazova-Baranova</surname><given-names>Leyla S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Намазова-Баранова Лейла Сеймуровна - д.м.н., профессор, академик РАН.</p><p>Москва, Шэньчжэнь</p></bio><bio xml:lang="en"><p>MD, PhD, Professor, Academician of the RAS.</p><p>Moscow, Shenzhen</p></bio><email xlink:type="simple">leyla.s.namazova@gmail.com</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НИИ педиатрии и охраны здоровья детей НКЦ №2 ФГБНУ «РНЦХ им. акад. Б.В. Петровского»; Российский национальный исследовательский медицинский университет им. Н.И. Пирогова (Пироговский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pediatrics and Child Health Research Institute in Petrovsky National Research Centre of Surgery; Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Ивановская областная клиническая больница</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ivanovo Regional Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НИИ педиатрии и охраны здоровья детей НКЦ №2 ФГБНУ «РНЦХ им. акад. Б.В. Петровского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pediatrics and Child Health Research Institute in Petrovsky National Research Centre of Surgery</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Российский национальный исследовательский медицинский университет им. Н.И. Пирогова (Пироговский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>НИИ педиатрии и охраны здоровья детей НКЦ №2 ФГБНУ «РНЦХ им. акад. Б.В. Петровского»; Российский национальный исследовательский медицинский университет им. Н.И. Пирогова (Пироговский Университет); Университет МГУ-ППИ в Шэньчжэне</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pediatrics and Child Health Research Institute in Petrovsky National Research Centre of Surgery; Pirogov Russian National Research Medical University; Shenzhen MSU-BIT University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2026</year></pub-date><volume>22</volume><issue>6</issue><fpage>672</fpage><lpage>678</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сурков А.Н., Гордеева О.Б., Краснова О.Е., Фатуллаев С.Т., Изотова Н.А., Бессонов Е.Е., Джгаркава И., Доброток А.В., Гусейнова А.Д., Руднева М.С., Ильяшенко Е.Н., Намазова-Баранова Л.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Сурков А.Н., Гордеева О.Б., Краснова О.Е., Фатуллаев С.Т., Изотова Н.А., Бессонов Е.Е., Джгаркава И., Доброток А.В., Гусейнова А.Д., Руднева М.С., Ильяшенко Е.Н., Намазова-Баранова Л.С.</copyright-holder><copyright-holder xml:lang="en">Surkov A.N., Gordeeva O.B., Krasnova O.E., Fatullaev S.T., Izotova N.A., Bessonov E.E., Dzharkava I., Dobrotok A.V., Guseynova A.D., Rudneva M.S., Il’yashenko E.N., Namazova-Baranova L.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.pedpharma.ru/jour/article/view/2729">https://www.pedpharma.ru/jour/article/view/2729</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Оценка диагностической значимости человеческого богатого лейцином альфа-2гликопротеина (leucine-rich alpha-2 glycoprotein; LRG) для неинвазивной диагностики активности воспалительных заболеваний кишечника (ВЗК) у детей.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование были включены 60 пациентов с ВЗК (болезнь Крона — 33 и язвенный колит — 27), находившихся на обследовании в 2023–2025 гг. Средний возраст — 9,7 ± 4,9 года. Уровень LRG в сыворотке крови определяли методом твердофазного иммуноферментного анализа (ИФА), «сэндвич»-метод, набор «AssayPro», США. Активность заболевания оценивали с помощью специальных педиатрических индексов PUCAI и PCDAI. Дополнительно анализировали иммунологические маркеры: anti-Saccharomyces cerevisiae antibodies (ASCA), IgG, IgM, IgA, а также стандартные клинико-лабораторные показатели. Данные представлены в виде медианы и нижнего и верхнего квартилей (Q1; Q3). Для сравнения трех и более групп использовали критерий Краскела – Уоллиса, а апостериорные сравнения проводили с помощью критерия Данна с поправкой Холма. Сравнение двух групп выполняли с применением U-критерия Манна – Уитни. Корреляционную связь между переменными оценивали по коэффициенту ранговой корреляции Спирмена (ρ); статистически значимыми считали различия при p &lt; 0,05.</p></sec><sec><title>Результаты</title><p>Результаты. Уровень LRG в сыворотке крови был статистически значимо выше у пациентов с высокой активностью воспаления по сравнению с легкой и умеренной активностью ВЗК по шкалам PUCAI (p = 0,038) и PCDAI (p = 0,021). Наиболее выраженные различия выявлены при стратификации по степени клинической активности заболевания. Также обнаружены статистически значимые положительные корреляции между концентрацией LRG в крови и индексами активности PUCAI (ρ = 0,556, p = 0,021) и PCDAI (ρ = 0,902, p = 0,001), а также с сывороточным уровнем ASCA (ρ = 0,314, p = 0,039).</p></sec><sec><title>Выводы</title><p>Выводы. Сывороточный уровень LRG, очевидно, является информативным лабораторным маркером активности ВЗК у детей и может быть рекомендован для внедрения в комплексную лабораторную диагностику и мониторинг эффективности терапии наряду с общепринятыми индексами и иммунологическими показателями.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective. The aim of the study is to evaluate diagnostic significance of human leucine-rich alpha-2 glycoprotein (LRG) for noninvasive diagnosis of inflammatory bowel disease (IBD) activity in children.</p></sec><sec><title>Methods</title><p>Methods. The study included 60 patients with IBD (Crohn’s disease — 33, ulcerative colitis — 27) who were examined in 2023–2025. The average age was 9.7 ± 4.9 years. Serum LRG levels were measured via enzyme-linked immunosorbent assay (ELISA), “sandwich method”, AssayPro kit, USA. Disease activity was evaluated with specific pediatric indices PUCAI and PCDAI. We have additionally analyzed several immunological markers (anti-Saccharomyces cerevisiae antibodies (ASCA), IgG, IgM, IgA), as well as standard clinical and laboratory parameters. All the data is presented as median, lower, and upper quartiles (Q1; Q3). We have used Kruskall – Wallis test for comparison of three or more groups, Dunn test with Holm correction for post hoc comparisons, Mann – Whitney U test for comparison of the two groups. The correlation between variables was estimated via Spearman’s rank correlation coefficient (ρ); differences at p &lt; 0.05 were considered statistically significant.</p></sec><sec><title>Results</title><p>Results. Serum LRG levels were statistically significantly higher in patients with high inflammatory activity compared to mild to moderate IBD activity according to PUCAI (p = 0.038) and PCDAI (p = 0.021) scales. The most profound differences were revealed when stratified by the degree of disease clinical activity. Statistically significant positive correlations were also mentioned between serum LRG levels and PUCAI (ρ = 0.556, p = 0.021) and PCDAI (ρ = 0.902, p = 0.001) activity indices, as well as with serum ASCA levels (ρ = 0.314, p = 0.039).</p></sec><sec><title>Conclusion</title><p>Conclusion. Serum LRG level is obviously an informative laboratory marker of IBD activity in children and can be recommended for implementation in comprehensive laboratory diagnostics and monitoring of therapy efficacy along with generally accepted indices and immunological indicators.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>болезнь Крона</kwd><kwd>язвенный колит</kwd><kwd>богатый лейцином альфа-2-гликопротеин</kwd><kwd>биомаркер</kwd><kwd>воспалительные заболевания кишечника</kwd><kwd>mucosal healing</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>Crohn’s disease</kwd><kwd>ulcerative colitis</kwd><kwd>Leucine-rich alpha-2 glycoprotein</kwd><kwd>biomarker</kwd><kwd>inflammatory bowel diseases</kwd><kwd>mucosal healing</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Отсутствует</funding-statement><funding-statement xml:lang="en">Not specified</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">Хавкин А.И., Налетов А.В., Марченко Н.А. 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