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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">10.21508/1027-4065-2024-69-6-73-78</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-2093</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>Дифференцированный подход к назначению противорецидивной терапии  на основании оценки уровня липокалина-2</article-title><trans-title-group xml:lang="en"><trans-title>A differentiated approach to prescribing anti-relapse therapy based on assessment  of lipocalin-2 levels</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2892-4665</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Еремеева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Eremeeva</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Еремеева Алина Владимировна — д.м.н., проф. кафедры педиатрии и детских инфекционных болезней Клинического института детского здоровья им. Н.Ф. Филатова</p><p>119991 Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">alinaeremeeva@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>Длин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dlin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России (Сеченовский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ОСП «Научно-исследовательский клинический институт педиатрии и детской хирургии им. академика Ю.Е. Вельтищева» (Институт Вельтищева) ФГАОУ ВО РНИМУ им. Н.И. Пирогова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Veltischev Research and Clinical Institute for Pediatrics and Pediatric Surgery of the Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>01</month><year>2025</year></pub-date><volume>69</volume><issue>6</issue><fpage>73</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2024</copyright-statement><copyright-year>2024</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/2093">https://www.ped-perinatology.ru/jour/article/view/2093</self-uri><abstract><p>В настоящее время отсутствуют общепринятые рекомендации по необходимости применения и подбора индивидуальной частоты противорецидивной терапии у детей с хроническим вторичным пиелонефритом.</p><sec><title>Цель исследования</title><p>Цель исследования. Оценка диагностической значимости мочевого уровня липокалина-2, ассоциированного с нейтрофильной желатиназой NGAL с пересчетом на уровень креатинина мочи (NGAL/Cr), для прогнозирования частоты рецидивов хронического вторичного пиелонефрита у детей.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследовании принимали участие 158 детей с хроническим вторичным пиелонефритом в возрасте от 2 до 14 лет, в том числе 130 (82,3%) девочек и 28 (17,7%) мальчиков. Дети были распределены по группам в зависимости от наличия и схемы противорецидивной терапии (фуразидин и/или фитопрепарат BNO 1045). Данная статья является продолжением работы, представленной авторами в предыдущих публикациях от 2019, 2020 и 2023 гг.</p></sec><sec><title>Результаты</title><p>Результаты. Мочевой уровень NGAL/Cr более 12 нг/мг до начала антибактериальной терапии у пациентов с рецидивом хронического пиелонефрита позволяет прогнозировать развитие рецидива заболевания и обосновывает назначение противорецидивной терапии. Включение в противорецидивную терапию фитопрепарата BNO 1045 в течение 1 мес после двухнедельного курса фуразидина позволяет увеличить длительность безрецидивного периода (с 13 до 16 мес) и снизить риск в 1,9 раза рецидива хронического пиелонефрита при частоте курсов противорецидивной терапии 1 раз в 12 мес. Применение данной схемы противорецидивной терапии каждые 6 мес позволяет увеличить медиану длительности безрецидивного периода до 22 мес и более чем в 4 раза снизить риск развития рецидива.</p></sec><sec><title>Заключение</title><p>Заключение. Выявлена прогностическая ценность исследования мочевого уровня NGAL/Cr доначала антибактериальной терапии, что позволяет прогнозировать риск рецидива хронического пиелонефрита. Полученные результаты указывают на необходимость проведения противорецидивной терапии пациентам с хроническим вторичным пиелонефритом. Оптимальные результаты по увеличению периода ремиссии получены при проведении комбинированной терапии фуразидин + фитопрепарат BNO 1045.</p></sec></abstract><trans-abstract xml:lang="en"><p>Currently, there are no standardized guidelines on the need for and frequency of anti-relapse therapy in children with chronic secondary pyelonephritis.</p><sec><title>Purpose</title><p>Purpose. To assess the diagnostic value of urinary neutrophil gelatinase-associated lipocalin (NGAL) measured as a ratio to urinary creatinine (NGAL/Cr), in predicting recurrence rates of chronic secondary pyelonephritis in children.</p></sec><sec><title>Material and methods</title><p>Material and methods. The study included 158 children aged 2 to 14 years with chronic secondary pyelonephritis, comprising 130 girls (82.3%) and 28 boys (17.7%). Children were divided into groups based on the presence and scheme of anti-relapse therapy (furazidine and/or phytopreparation BNO 1045). This article continues the authors’ research previously published in 2019, 2020, and 2023.</p></sec><sec><title>Results</title><p>Results. A pre-treatment urinary NGAL/Cr level above 12 ng/mg in patients with recurrent secondary pyelonephritis allowed prediction of disease recurrence and supported the need for anti-relapse therapy. Adding the phytopreparation BNO 1045 to anti-relapse therapy for one month following a two-week furazidine course extended the relapse-free period from 13 to 16 months and reduced the recurrence risk by 1.9 times with therapy administered annually. Implementing this anti-relapse therapy every six months increased the median relapse-free period to 22 months, reducing recurrence risk by over fourfold.</p></sec><sec><title>Conclusion</title><p>Conclusion. The study demonstrates the predictive value of urinary NGAL/Cr levels before the initiation of antibacterial therapy, allowing assessment of relapse risk in secondary pyelonephritis. The findings support the necessity of anti-relapse therapy in children with chronic secondary pyelonephritis. Optimal remission extension was achieved with a combination therapy of furazidine and phytopreparation BNO 1045.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>пиелонефрит</kwd><kwd>противорецидивная терапия</kwd><kwd>NGAL</kwd><kwd>фитопрепарат BNO 1045</kwd><kwd>фуразидин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>pyelonephritis</kwd><kwd>anti-relapse therapy</kwd><kwd>NGAL</kwd><kwd>phytopreparation BNO 1045</kwd><kwd>furazidine</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">Инфекция мочевой системы у детей: руководство для врачей. 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