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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">gastro-j</journal-id><journal-title-group><journal-title xml:lang="ru">Российский журнал гастроэнтерологии, гепатологии, колопроктологии</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Gastroenterology, Hepatology, Coloproctology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1382-4376</issn><issn pub-type="epub">2658-6673</issn><publisher><publisher-name>«Gastro» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22416/1382-4376-2020-30-5-18-25</article-id><article-id custom-type="elpub" pub-id-type="custom">gastro-j-495</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 ИССЛЕДОВАНИЯ</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>Использование зависимости «доза - эффект» для подбора оптимальных доз системных кортикостероидов в лечении воспалительных заболеваний кишечника</article-title><trans-title-group xml:lang="en"><trans-title>Using Dose-Effect Relationship for Optimising Systemic Corticosteroid Dosage in Treatment of Inflammatory Bowel Diseases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1475-6584</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексеева</surname><given-names>О. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseeva</surname><given-names>O. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексеева Ольга Поликарповна - доктор медицинских наук, профессор кафедры госпитальной терапии и общеврачебной практики им. В.Г. Вогралика</p><p>603005, г. Нижний Новгород, пл. Минина и Пожарского, д. 10/1</p></bio><bio xml:lang="en"><p>Olga P. Alekseeva - Dr. Sci. (Med.), Prof., Chair of HospitalTherapy and General Practice named after V.G. Vogralik</p><p>603005, Nizhny Novgorod, Minina i Pozharskogo sq., 10/1</p></bio><email xlink:type="simple">al_op@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/0000-0001-7038-3578</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Криштопенко</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krishtopenko</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Криштопенко Сергей Владимирович - доктор медицинских наук, врач-гастроэнтеролог</p><p>603093, г. Нижний Новгород, ул. Родионова, д. 190</p></bio><bio xml:lang="en"><p>Sergey V. Krishtopenko - Dr. Sci. (Med.), Gastroenterologist</p><p>603093, Nizhny Novgorod, Rodionova str., 190</p></bio><email xlink:type="simple">kr_sv@mail.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/0000-0001-5161-6436</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексеева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseeva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексеева Анастасия Алексеевна - студентка 6-го курса</p><p>Нижний Новгород</p></bio><bio xml:lang="en"><p>Anastasia A. Alekseeva - Graduate Student (6th year)</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">anastasyalekseeva1998@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Приволжский исследовательский медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ «Нижегородская областная клиническая больница им. Н.А. Семашко» Министерства здравоохранения Нижегородской области</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nizhny Novgorod Regional Clinical Hospital named after N.A. Semashko</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБОУ ВО «Приволжский исследовательский медицинский университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2020</year></pub-date><volume>30</volume><issue>5</issue><fpage>18</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алексеева О.П., Криштопенко С.В., Алексеева А.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Алексеева О.П., Криштопенко С.В., Алексеева А.А.</copyright-holder><copyright-holder xml:lang="en">Alekseeva O.P., Krishtopenko S.V., Alekseeva A.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.gastro-j.ru/jour/article/view/495">https://www.gastro-j.ru/jour/article/view/495</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Определение оптимальных доз кортикостероидов (КС) (преднизолона) для индукции ремиссии у больных язвенным колитом (ЯК) и болезнью Крона (БК) на основе построения зависимости «доза - эффект» при проведении первого и повторного курсов терапии.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование включены 86 больных с активным заболеванием средней и тяжелой степени (61 — с ЯК, 25 — с БК) в возрасте от 18 до 65 лет. Для индукции ремиссии в качестве первого курса терапии всем пациентам назначали преднизолон в начальной дозе от 30 до 60 мг/сутки с последующим снижением. 28 пациентам из этой группы в дальнейшем был назначен преднизолон в качестве повторного курса. Эффект терапии оценивали предварительно через две недели и окончательно на момент полной отмены преднизолона с использованием общепринятых критериев оценки клинического ответа и ремиссии. Построение зависимости «доза - эффект» для преднизолона проводилось по оригинальной методике, смысл которой заключается в адекватном статистическом преобразовании исходных клинических данных, получаемых в виде количественного выражения реально примененной совокупности доз и зарегистрированных альтернативных ответов, установленных по критериям конечной точки, в наглядный график функции эффективности, по которой возможно проведение аналитических оценок. Оценка среднего значения в каждой точке определялась на основе метода ядерной оценки регрессии. Доверительные интервалы средних и достоверность различий вычислялись на основе t-критерия Стьюдента.</p></sec><sec><title>Результаты</title><p>Результаты. Построена зависимость «доза — эффект» на момент окончания первого курса лечения преднизолоном в виде графика, на котором прослеживается начальная точка выхода функции эффективности на плато, статистически отражающая уровень насыщения признака, а клинически - величину максимально возможного эффекта препарата, получившая название оптимальной клинически эффективной дозы (ОКЭД). Для первого индукционного курса преднизолона определена ОКЭД со статистическими параметрами 50,70 ± 0,65 (49,41÷51,98) мг (p = 0,05). Максимальный вероятностный эффект на этой дозе получен в диапазоне 82,21 ± 8,23 (66,08÷98,33) % (p = 0,05). ОКЭД для повторного курса лечения преднизолоном составила 51,43 ± 1,55 (48,24÷54,61) мг (p = 0,05) с вероятностью эффекта 40,02 ± 12,86 (13,59÷66,45) % (p = 0,05).</p></sec><sec><title>Заключение</title><p>Заключение. У больных ЯК и БК средней и тяжелой степени при проведении первого индукционного курса КС (преднизолоном) определена ОКЭД = 50,70 ± 0,65 мг в сутки, назначенная на момент начала лечения. Максимальный эффект на этой дозе зафиксирован на уровне 82 %. Соответственно, 18 % пациентов не ответили на лечение преднизолоном. При проведении повторного курса КС ОКЭД составила те же 51,43 ± 1,55 мг в сутки, но эффект лечения оказался на 42 % ниже, чем при первом курсе, и в абсолютном выражении не превысил 40 %, что свидетельствует о недостаточном эффекте проведения повторных курсов терапии КС у данной категории больных.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim</title><p>Aim. Estimation of an optimal corticosteroid (CS, prednisone) dosage for the remission induction in patients with ulcerative colitis (UC) and Crohn’s disease (CD) based on the construction of a dose-effect relationship during the first and second courses of therapy.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 86 patients with moderate to severe active disease (61 with UC and 25 with CD) aged 18 to 65 years. To induce remission, all patients had the first course of prednisone at a starting dose of 30 to 60 mg/day, with a subsequent reduction. Prednisone was continued in a repeat course in 28 patients. The effect was evaluated past two weeks and at a time of complete withdrawal of prednisone using the generally accepted clinical response and remission criteria. The dose-effect relationship for prednisone was constructed using an original method. The method realises an adequate statistical transformation of primary clinical data in form of a quantitative expression of factual doses and registered alternative responses established with endpoint criteria into a visual efficacy function graph suitable for downstream analyses. The mean at each point was estimated with the regression kernel scoring method. The mean confidence intervals and significance values were estimated with the Student’s t-test.</p></sec><sec><title>Results</title><p>Results. The dose-effect relationship constructed upon completion of the first prednisone course is a graph showing the plateau point of the efficacy function as a statistical measure of character saturation and a clinical measure of the highest expected drug effect. This graph is referred to as the optimal clinically effective dose (OCED). The first induction prednisone course had the OCED estimates of 50.70 ± 0.65 (49.41÷51.98) mg (p = 0.05). A highest expected effect for this dose was obtained in the interval of 82.21 ± 8.23 (66.08÷98.33)% (p = 0.05). The repeat prednisone course had OCED values of 51.43 ± 1.55 (48.24÷54.61) mg (p = 0.05), with the expected effect of 40.02 ± 12.86 (13.59÷66.45)% (p = 0.05).</p></sec><sec><title>Conclusion</title><p>Conclusion. In medium to severe UC and CD patients, the first induction prednisone course had OCED estimates of 50.70 ± 0.65 mg/day prescribed at the onset of therapy. The highest effect at this dose was 82%, and 18% of the patients did not respond to the prednisone treatment, accordingly. The repeat CS treatment had the same OCED values of 51.43 ± 1.55 mg/day, but a 42% lower expected effect compared to the first course. The effect did not exceed 40% suggesting its inadequacy in repeat CS treatments in this category of patients.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>язвенный колит</kwd><kwd>болезнь Крона</kwd><kwd>системные кортикостероиды</kwd><kwd>функция эффективности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ulcerative colitis</kwd><kwd>Crohn’s disease</kwd><kwd>systemic corticosteroids</kwd><kwd>efficacy function</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">Truelove S.C., Witts L.J. Cortisone in ulcerative colitis; final report on a therapeutic trial. Br Med J. 1955;2(4947):1041–8. DOI: 10.1136/bmj.2.4947.1041</mixed-citation><mixed-citation xml:lang="en">Truelove S.C., Witts L.J. Cortisone in ulcerative colitis; final report on a therapeutic trial. Br Med J. 1955;2(4947):1041–8. 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