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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-238-6-32-38</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-3190</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>Парацеллюлярная и трансмембранная проницаемость тонкой кишки у новорождённых детей</article-title><trans-title-group xml:lang="en"><trans-title>Paracellular and transmembrane permeability of the small intestine in newborns</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1062-7280</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бавыкина</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bavykina</surname><given-names>I. A.</given-names></name></name-alternatives><email xlink:type="simple">i-bavikina@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/0009-0009-5232-0704</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бердников</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Berdnikov</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6251-2579</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кубышкина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kubyshkina</surname><given-names>A. 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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3896-3297</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Звягин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zvyagin</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1228-443X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бельмер</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belmer</surname><given-names>S. V.</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/0000-0001-7308-7280</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хавкин</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Khavkin</surname><given-names>A. I.</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/0000-0002-2620-9836</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баранников</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Barannikov</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-2449-691X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бердникова</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Berdnikova</surname><given-names>K. A.</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>Федеральное государственное бюджетное образовательное учреждение высшего образования «Воронежский государственный медицинский университет им. Н.Н. Бурденко» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University named after N.N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования Российский национальный исследовательский медицинский университет имени Н.И. Пирогова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.I. Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ МО «Научно-исследовательский клинический институт детства» Министерства здравоохранения Московской области; Федеральное государственное автономное образовательное учреждение высшего образования «Белгородский государственный исследовательский университет» Министерства науки и высшего образования Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Clinical Institute of Childhood, Ministry of Health of the Moscow Region; Belgorod State Research University. Ministry of Science and Higher Education of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>22</day><month>01</month><year>2026</year></pub-date><volume>0</volume><issue>6</issue><fpage>32</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бавыкина И.А., Бердников А.А., Кубышкина А.В., Звягин А.А., Бельмер С.В., Хавкин А.И., Баранников С.В., Бердникова К.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Бавыкина И.А., Бердников А.А., Кубышкина А.В., Звягин А.А., Бельмер С.В., Хавкин А.И., Баранников С.В., Бердникова К.А.</copyright-holder><copyright-holder xml:lang="en">Bavykina I.A., Berdnikov A.A., Kubyshkina A.V., Zvyagin A.A., Belmer S.V., Khavkin A.I., Barannikov S.V., Berdnikova K.A.</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.nogr.org/jour/article/view/3190">https://www.nogr.org/jour/article/view/3190</self-uri><abstract><p>С целью уточнения механизмов кишечной проницаемости у новорожденных (гестационный возраст - 33-41 неделя (Me 38,0 [36,0-39,0]) в возрасте до 10 суток определена концентрация Claudin-2 и I-FABP у 115 детей. Первую группу (n=80) составили доношенные (Me 39,0 [38,0; 40,0] нед.); во вторую включены 35 недоношенных младенцев (Me 35,0 [34,5; 36,0] нед.). Методом ИФА определены концентрации Claudin-2 и I-FABP в сыворотке крови, проведена оценка базовых показателей нутритивного статуса. Статистический анализ выполнен с использованием программы StatTech v. 4.3.2 (Россия). Для проверки распределения на нормальность использованы критерии Колмогорова-Смирнова (n≥50) и Шапиро-Уилка (n≤50), для сравнения независимых групп по количественному признаку использованы методы непараметрической статистики, коррекционный анализ выполнен по Спирмену. Различия считались статистически значимыми при p&lt;0,05. В результате исследования установлено, что концентрация Claudin-2 в общей когорте обследованных детей составила Ме 3,434 нг/мл [1,198-7,866], уровень I-FABP в выборке составил Ме 1,134 нг/мл [0,854-1,846]. Маркеры прямо связаны между собой (rs=0,44, p&lt;0,001). Выявлено, что уровень Claudin-2 у недоношенных выше, чем у доношенных детей (Me 8,124 нг/мл [6,448-13,676] VS Me 1,508 нг/мл [1,004-4,33]) (p&lt;0,001). Отмечается обратная корреляционная связь между значением Claudin-2 и гестационным возрастом (rs= -0,507, p&lt;0,001), массой (rs= -0,335, р&lt;0,001) и длиной тела (rs= -0,277, р=0,003), окружностью головы (rs= -0,316, р&lt;0,001). Концентрация I-FABP в сыворотке крови в 1 группе составила Me 1,13 нг/мл [0,796-1,911], во 2 - Me 1,134 нг/мл [1,05-1,614], (р=0,440) и не имела связи с гестационным возрастом (rs= -0,176, p=0,059), массой тела (rs= -0,015, р=0,874), длиной тела (rs=0,072, р=0,448) и окружностью головы (rs=0,023, р=0,805). Не выявлено взаимосвязи характера вскармливания, антибактериальной терапии и Claudin-2 и I-FABP в сыворотке крови (р&gt;0,05).</p></abstract><trans-abstract xml:lang="en"><p>In order to determine the concentration of Claudin-2 and I-FABP to clarify the mechanisms of intestinal permeability in newborns, 115 patients (gestational age - 33-41 weeks (Me 38.0 [36.0-39.0]) aged up to 10 days were examined. The first group (n=80) consisted of full-term infants (Me 39.0 [38.0; 40.0] weeks); the second included 35 premature infants (Me 35.0 [34.5; 36.0] weeks). The ELISA method was used to determine the concentrations of Claudin-2 and I-FABP, as well as to assess the basic indicators of nutritional status. The statistical analysis was performed using the StatTech v. 4.3.2 program (Russia). The Kolmogorov-Smirnov (n≥50) and Shapiro-Wilk (n≤50) criteria, the Mann-Whitney U-test and the Kraskel-Wallis criterion, and the Spearman rank correlation coefficient were used. The differences were considered statistically significant at p&lt;0.05. As a result of the study, it was found that the concentration of Claudin-2 in the total cohort of examined children was Iu 3,434 ng/ml [1,198-7,866], the level of I-FABP in the sample was Iu 1,134 ng/ml [0.854-1,846]. The markers had a direct relationship (rs=0.44, p&lt;0.001). It was found that the level of Claudin-2 in premature infants is higher than in full-term infants (Me 8,124 ng/ml [6,448-13,676] VS Me 1,508 ng/ml [1,004-4.33]) (p&lt;0.001). There is an inverse correlation between the Claudin-2 value and gestational age (rs= -0.507, p&lt;0.001), weight (rs= -0.335, p&lt;0.001) and body length (rs= -0.277, p=0.003), head circumference (rs= -0.316, p&lt;0.001). The concentration of I-FABP in the blood serum in children of group 1 was Me 1.13 ng/ml [0.796-1.911], in premature infants - Me 1.134 ng/ml [1.05-1.614]. This indicator did not differ in patients in the study groups (p=0.440) and had no relation to gestational age (rs= -0.176, p=0.059), body weight (rs= -0.015, p=0.874), body length (rs=0.072, p=0.448) and head circumference (rs=0.023, p=0.805). There was no correlation between the nature of breastfeeding, antibacterial therapy, and Claudin-2 and I-FABP in blood serum (p&gt;0.05).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>интестинальный белок</kwd><kwd>связывающий жирные кислоты</kwd><kwd>клаудин 2</kwd><kwd>кишечная проницаемость</kwd><kwd>гестационный возраст</kwd><kwd>недоношенные дети</kwd><kwd>новорождённые</kwd></kwd-group><kwd-group xml:lang="en"><kwd>intestinal fatty acid binding protein</kwd><kwd>claudin 2</kwd><kwd>intestinal permeability</kwd><kwd>gestational age</kwd><kwd>premature infants</kwd><kwd>newborns</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">Andreev D.N. The role of intestinal mucosal permeability disorders in the genesis of functional diseases of the gastrointestinal tract. Consilium Medicum. 2019; 21 (8): 29-34. (in Russ.) doi: 10.26442/20751753.2019.8.190539.@@ Андреев Д.Н. 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