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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">perinatology</journal-id><journal-title-group><journal-title xml:lang="ru">Российский вестник перинатологии и педиатрии</journal-title><trans-title-group xml:lang="en"><trans-title>Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1027-4065</issn><issn pub-type="epub">2500-2228</issn><publisher><publisher-name>Ltd. “The National Academy of Pediatric Science and Innovation”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21508/1027-4065-2026-71-2-44-49</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-2378</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>Фекальный кальпротектин и циркулирующий белок плотных контактов у детей с гастроинтестинальной формой пищевой аллергии</article-title><trans-title-group xml:lang="en"><trans-title>Faecal calprotectin and circulating tight junction protein in children with gastrointestinal food allergy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2106-2572</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Приходченко</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Prikhodchenko</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Приходченко Нелли Григорьевна — д.м.н., профессор института педиатрии </p><p>690002, г. Владивосток, пр-кт Острякова, дом 2 </p></bio><bio xml:lang="en"><p>690002, Vladivostok </p></bio><email xlink:type="simple">prikhodchenko_n@mail.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/0000-0003-2668-8483</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шуматова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shumatova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шуматова Татьяна Александровна — д.м.н., профессор, директор института педиатрии</p><p>690002, г. Владивосток, пр-кт Острякова, дом 2 </p></bio><bio xml:lang="en"><p>690002, Vladivostok </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4852-6103</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коваленко</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalenko</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коваленко Дарья Вадимовна — ассистент института педиатрии  </p><p>690002, г. Владивосток, пр-кт Острякова, дом 2 </p></bio><bio xml:lang="en"><p>690002, Vladivostok </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0748-5819</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зернова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zernova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зернова Екатерина Сергеевна — к.м.н., доцент института педиатрии </p><p>690002, г. Владивосток, пр-кт Острякова, дом 2 </p></bio><bio xml:lang="en"><p>690002, Vladivostok </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тихоокеанский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pacific state medical university</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>25</day><month>04</month><year>2026</year></pub-date><volume>71</volume><issue>2</issue><fpage>44</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><copyright-holder xml:lang="en">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><license xlink:href="https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.ped-perinatology.ru/jour/article/view/2378">https://www.ped-perinatology.ru/jour/article/view/2378</self-uri><abstract><p>Синдром повышенной эпителиальной проницаемости играет важную роль в развитии аллергических заболеваний, а белки плотных контактов, такие как циркулирующий ZO-1, могут служить биомаркерами нарушения кишечного барьера.</p><sec><title>Цель</title><p>Цель. Изучить сывороточный уровень ZO-1 как маркера состояния эпителиальной проницаемости и фекального кальпротектина как индикатора повреждения кишечного барьера у детей при пищевой аллергии.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Обследовано 27 детей с аллергией к белкам коровьего молока (I группа) и 20 здоровых детей (II группа). Уровень ZO-1 в сыворотке крови и кальпротектина в образцах кала определяли методом иммуноферментного анализа (ELISA). Статистическая обработка полученного материала проводилась с помощью непараметрического теста Манна– Уитни, корреляционного анализа Спирмена, ROC-анализа.</p></sec><sec><title>Результаты</title><p>Результаты. Тяжесть гастроинтестинальных проявлений оценивали по разработанной шкале, включающей плач, срыгивания, стул и другие клинические проявления. В I группе тяжесть гастроинтестинальных проявлений составила 13 баллов (Me=13, Q1-Q3:7–18), в контрольной — 3 балла (Me=3, Q1-Q3:1–4,5). Уровень сывороточного ZO-1 у детей с аллергией к белкам коровьего молока был ниже (Me=0,007 нг/мл, Q1-Q3:0–0,031), чем в контрольной группе (Me=0,033 нг/мл, Q1-Q3:0,027–0,135; p&lt;0,05). Фекальный кальпротектиктин также имел значимые отличия: 286 мкг/г (I группа) против 87 мкг/г (контроль; p&lt;0,001). Выявлена обратная корреляция между ZO-1 и фекальным кальпротектином (r=−0,675; p&lt;0,01), а также между ZO-1 и тяжестью гастроинтестинальных проявлений (r=−0,605; p&lt;0,05).</p></sec><sec><title>Заключение</title><p>Заключение. Снижение сывороточного уровня ZO-1 и повышение фекального кальпротектина у детей с аллергией к белкам коровьего молока подтверждают повреждение кишечного барьера. Сывороточный уровень ZO-1 может служить маркером состоятельности кишечного эпителия, а комбинация ZO-1 с фекальным кальпротектином повышает диагностическую ценность в прогнозировании прогрессирования аллергии и риска атопического марша.</p></sec></abstract><trans-abstract xml:lang="en"><p>Recent studies have confirmed that increased intestinal permeability syndrome plays a key role in the pathogenesis of allergic diseases, while peripheral tight junction proteins like ZO-1 may serve as potential biomarkers for assessing gut barrier integrity.</p><sec><title>The aim of the study</title><p>The aim of the study. To evaluate serum ZO-1 levels as a marker of epithelial barrier dysfunction in children with gut barrier impairment and food allergy.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 27 children with cow’s milk protein allergy (CMPA, Group I) aged 1 month to 3 years and 20 healthy controls (Group II). Serum ZO-1 and fecal calprotectin (FC) were measured by ELIZA. Statistical analysis used MannWhitney U test, Spearman’s correlation, and ROC analysis.</p></sec><sec><title>Results</title><p>Results. Gastrointestinal symptom severity (GSS) was scored based n crying, regurgitation, stool, etc. Group I showed significantly higher GSS (Ме=13, Q1-Q3:7–18) versus controls (Ме=3, Q1-Q3:1–4,5). Serum ZO-1 levels were significantly lower in CMPA patients (Ме=0,007 ng/mL, Q1-Q3:0–0,031) compared to controls (Ме=0,033 ng/mL, Q1-Q3:0,027–0,135; p&lt;0,05). FC levels also differed significantly: 286 μg/g (Group I) vs 87 μg/g (controls; p&lt;0,001). Inverse correlations were found between ZO-1 and FC (r=-0,675; p&lt;0,01) and between ZO-1 and GSS (r=-0,605; p&lt;0.05).</p></sec><sec><title>Conclusion</title><p>Conclusion. Decreased ZO-1 levels and elevated fecal calprotectin confirm intestinal barrier damage in CMPA patients. ZO-1 serves as a reliable marker of barrier integrity, while its combination with FC enhances diagnostic value for predicting allergy progression and atopic march risk.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>фекальный кальпротектин</kwd><kwd>циркулирующие белки плотных контактов ZO-1</kwd><kwd>пищевая аллергия</kwd><kwd>кишечный барьер</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>intestinal barrier</kwd><kwd>fecal calprotectin</kwd><kwd>circulating tight junction proteins</kwd><kwd>ZO-1</kwd><kwd>food allergy</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">Meyer R., Fox A.T., Chebar Lozinsky A., Michaelis L.J., Shah N. Non-IgE-mediated gastrointestinal allergies-Do they have a place in a new model of the Allergic March. Pediatr Allergy Immunol. 2019; 30(2): 149–158. 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