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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">nmp</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал им. Н.В. Склифосовского «Неотложная медицинская помощь»</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Sklifosovsky Journal "Emergency Medical Care"</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-9022</issn><issn pub-type="epub">2541-8017</issn><publisher><publisher-name>“N.V. Sklifosovsky Research Institute for Emergency Medicine”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23934/2223-9022-2020-9-4-593-597</article-id><article-id custom-type="elpub" pub-id-type="custom">nmp-1008</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>Характеристические кривые и критерий критической разницы в оценке информативности маркеров почечного повреждения при литотрипсии</article-title><trans-title-group xml:lang="en"><trans-title>Characteristic Curves and Criterion of Critical Difference in Assessing the Informativeness of Markers of Renal Damage in Lithotripsy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8124-3933</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исхакова</surname><given-names>Р. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Iskhakova</surname><given-names>R. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Исхакова Римма Сагдулловна, врач клинической лабораторной диагностики</p><p>Российская Федерация, 450005, Уфа, пр. Октября, д. 73, корп. 1</p></bio><bio xml:lang="en"><p>Rimma S. Iskhakova Clinical Laboratory Diagnostics Physician</p><p>73 b. 1 Oktyabrya Ave., Ufa 450005, Russian Federation</p></bio><email xlink:type="simple">pummasag@rambler.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/0000-0003-0996-6189</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гильманов</surname><given-names>А. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Gilmanov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гильманов Александр Жанович доктор медицинских наук, профессор, заведующий кафедрой лабораторной диагностики ИДПО</p><p>Российская Федерация, 450008, Уфа, ул. Ленина, 3</p></bio><bio xml:lang="en"><p>Aleksandr G. Gilmanov Doctor of Medical Sciences, Professor, Head of the Department of Laboratory Diagnostics</p><p>3 Lenina St., Ufa 450008, Russian Federation</p></bio><email xlink:type="simple">alex_gilm@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Медицинский центр «Семья»<country>Россия</country></aff><aff xml:lang="en">Medical Center “Family”<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">ФГБОУ ВО «Башкирский государственный медицинский университет» МЗ РФ<country>Россия</country></aff><aff xml:lang="en">Bashkir State Medical University of the Ministry of Health of the Russian Federation<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2021</year></pub-date><volume>9</volume><issue>4</issue><fpage>593</fpage><lpage>597</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Исхакова Р.С., Гильманов А.Ж., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Исхакова Р.С., Гильманов А.Ж.</copyright-holder><copyright-holder xml:lang="en">Iskhakova R.S., Gilmanov A.G.</copyright-holder><license 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.jnmp.ru/jour/article/view/1008">https://www.jnmp.ru/jour/article/view/1008</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Определение диагностической значимости лабораторных биомаркеров повреждения почечной ткани при дистанционной нефролитотрипсии у пациентов с уролитиазом.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. На базе отделения урологии Республиканской клинической больницы (Уфа) обследованы 35 пациентов с мочекаменной болезнью, которым были проведены сеансы дистанционной удар- но-волновой литотрипсии. У больных определяли лабораторные показатели: количество эритроцитов, лейкоцитов в крови, уровень липокалина и микроальбумина в моче, а также β2-микроглобулина и цистатина С в сыворотке крови. В группу контроля вошли 14 здоровых доноров. Для определения диагностической эффективности биомаркеров почечной травмы были построены характеристические кривые, сдвиги уровня липокалина интерпретировались с учетом данных о значении критерия критической разницы.</p></sec><sec><title>Результаты</title><p>Результаты. При исследовании мочевого уровня липокалина у пациентов с мочекаменной болезнью установлено, что разница в концентрации биомаркера у них и здоровых лиц статистически незначима (0,68 пг/мл против 0,4 пг/мл). После первого сеанса дистанционной литотрипсии отмечается уве- личение мочевой экскреции липокалина в 5 раз, после второго — дополнительно в 1,6 раза, а после третьего — еще в 1,7 раза (различия статистически значимы). Для анализа прогностической эффективности маркеров почечной травмы выполнено построение характеристических кривых. Площадь под ROC-кривой для липокалина варьировала от 0,77 до 0,80 в зависимости от числа сеансов, что свидетельствует о высокой диагностической эффективности этого биомаркера. Определение критерия критической разницы (RCV) показало, что возрастание уровня липокалина в моче после первого сеанса литотрипсии более чем в 2,1 раза является статистически значимым. Концентрацию указанного биомаркера в моче, превышающую 4,5 пг/мл, 6 пг/мл и 10 пг/мл после первого, второго и третьего сеансов литотрипсии соответственно можно рассматривать как основание для изменения тактики лечения (отсрочивание повторной процедуры) или выполнения литотрипсии другим способом.</p></sec><sec><title>Вывод</title><p>Вывод. Мочевой липокалин, ассоциированный с желатиназой нейтрофилов, является информативным биомаркером травмы почек при оценке осложнений, связанных с процедурой литотрипсии.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim of study</title><p>Aim of study. Determination of the diagnostic significance of laboratory biomarkers of renal tissue damage in remote nephrolithotripsy in patients with urolithiasis.</p></sec><sec><title>Material and methods</title><p>Material and methods. On the basis of the urology department of the Republican Clinical Hospital (Ufa), 35 patients with urolithiasis were examined, who underwent remote shock wave lithotripsy sessions. The laboratory parameters were determined in patients: the number of erythrocytes, leukocytes in the blood, the level of lipocalin and microalbumin in the urine, as well as alpha2-microglobulin and cystatin C in the blood serum. The control group included 14 healthy donors. To determine the diagnostic efficacy of biomarkers of renal injury, characteristic curves were plotted, and lipocalin level shifts were interpreted taking into account the data on the critical difference criterion value.</p></sec><sec><title>Results</title><p>Results. When studying the urinary level of lipocalin in patients with urolithiasis, it was found that the difference in the concentration of the biomarker in them and in healthy individuals is statistically insignificant (0.68 pg/ml versus 0.4 pg/ml). After the first session of extracorporeal lithotripsy, an increase in urinary excretion of lipocalin by 5 times is noted, after the second - by an additional 1.6 times, and after the third - by another 1.7 times (the differences are statistically significant). To analyze the prognostic efficiency of markers of renal injury, characteristic curves were plotted. The area under the ROC curve for lipocalin varied from 0.77 to 0.80 depending on the number of sessions, which indicates a high diagnostic efficiency of this biomarker. The determination of the criterion of critical difference (CCD) showed that an increase in the level of lipocalin in the urine after the first session of lithotripsy more than 2.1 times is statistically significant. The concentration of the specified biomarker in urine exceeding 4.5 pg/ml, 6 pg/ml and 10 pg/ml after the first, second and third sessions of lithotripsy, respectively, can be considered as a basis for changing treatment tactics (delaying the second procedure) or performing lithotripsy in another way.</p></sec><sec><title>Conclusion</title><p>Conclusion. Urinary lipocalin, associated with neutrophil gelatinase, is an informative biomarker of renal injury in the assessment of complications associated with the lithotripsy procedure.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>повреждение почек</kwd><kwd>биомаркеры</kwd><kwd>дистанционная литотрипсия</kwd><kwd>NGAL</kwd><kwd>ROC</kwd><kwd>RCV</kwd></kwd-group><kwd-group xml:lang="en"><kwd>kidney damage</kwd><kwd>biomarkers</kwd><kwd>extracorporeal lithotripsy</kwd><kwd>NGAL</kwd><kwd>ROC</kwd><kwd>RCV</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">De Geus HRH, Ronco C, Haase M,Jacob L, Lewington A, Vincent JL. The cardiac surgery-associated neutrophil gelatinase-associated lipocalin (CSA-NGAL) score: a potential tool to monitor acute tubular damage. J Thorac Cardiovasc Surg. 2016;151(6):1476–1481. 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