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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Immunology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Immunology</journal-title><trans-title-group xml:lang="ru"><trans-title>Russian Journal of Immunology</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1028-7221</issn><issn publication-format="electronic">2782-7291</issn><publisher><publisher-name xml:lang="en">Russian Society of Immunology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">899</article-id><article-id pub-id-type="doi">10.31857/S102872210002415-1</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Spontaneous and stimulated CD25 expression on T-lymphocytes and the amount of regulatory T-cells in children with chronic hepatitis C</article-title><trans-title-group xml:lang="ru"><trans-title>Спонтанная и стимулированная экспрессия СD25 Т-лимфоцитами и количество регуляторных Т-клеток у детей с хроническим гепатитом С</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pashnina</surname><given-names>I. .</given-names></name><name xml:lang="ru"><surname>Пашнина</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Regional Children’s Clinical Hospital № 1</institution></aff><aff><institution xml:lang="ru">Областная детская клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Immunology and Physiology, Urals Branch of the Russian Acad. Sci.</institution></aff><aff><institution xml:lang="ru">Институт иммунологии и физиологии РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2018</year></pub-date><volume>21</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>385</fpage><lpage>390</lpage><history><date date-type="received" iso-8601-date="2020-10-22"><day>22</day><month>10</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Pashnina I...</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Пашнина И.А.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Pashnina I...</copyright-holder><copyright-holder xml:lang="ru">Пашнина И.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://rusimmun.ru/jour/article/view/899">https://rusimmun.ru/jour/article/view/899</self-uri><abstract xml:lang="en"><p>Children of 6–17 years old with viral chronic hepatitis C (n=24) and conditionally healthy controls of corresponding age (n=32) were examined. The amount of CD3+CD25+, CD4+CD25+ и CD8+CD25+ and regulatory T-cells (Treg, CD3+CD4+CD25+CD127low/neg) were investigated by fl ow cytometry. In children with chronic hepatitis C the number of phytohemagglutinin-stimulated CD3+CD25+, CD4+CD25+ and Treg was decreased, the amount of CD8+CD25+ in conditions of stimulation by antibodies to CD3 and combined stimulation by antibodies to CD3 and CD28 was too decreased.</p></abstract><trans-abstract xml:lang="ru"><p>Обследованы дети 6–17 лет с хроническим вирусным гепатитом С (n=24), а также условно здоро- вые дети соответствующего возраста (контрольная группа, n=32). Методом проточной цитометрии исследовано количество CD3+CD25+, CD4+CD25+ и CD8+CD25+, регуляторных Т-клеток (Treg, CD3+CD4+CD25+CD127low/neg) в периферической крови и при инкубации с различными стимуляторами. У детей с хроническим гепатитом С по сравнению с контролем выявлено снижение количества CD3+CD25+, CD4+CD25+ и Treg при стимуляции фитогемагглютинином, а также CD8+CD25+ – при стимуляции антителами к CD3 и сочетанной стимуляции антителами к CD3 и CD28.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>hepatitis C</kwd><kwd>lymphocytes</kwd><kwd>fl ow cytometry</kwd><kwd>Treg</kwd><kwd>гепатит С</kwd><kwd>лимфоциты</kwd><kwd>Treg</kwd><kwd>проточная цитометрия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Akhtar F., Rehman S. A. Public Health Analysis on Gaps in Disease Monitoring and Opportunities for Improved Care for the Management of Hepatitis B and C. Cureus. 2018, 16;10 (1): e2077.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Chacha S. G. F., Rodrigues J. P. V., Araujo R. C., Pereira L. R. L., Villanova M. G., Souza F. F., de Carvalho Santana R., de Lourdes Candolo Martinelli A. 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