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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">rsp</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-практическая ревматология</journal-title><trans-title-group xml:lang="en"><trans-title>Rheumatology Science and Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1995-4484</issn><issn pub-type="epub">1995-4492</issn><publisher><publisher-name>IMA-PRESS, LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/1995-4484-2019-149-153</article-id><article-id custom-type="elpub" pub-id-type="custom">rsp-2697</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 RESEARCH</subject></subj-group></article-categories><title-group><article-title>Аллельные полиморфизмы гена тимидилатсинтазы и их гаплотипы как предикторы ответа на метотрексат у больных ревматоидным артритом</article-title><trans-title-group xml:lang="en"><trans-title>Allelic polymorphisms of thymidylate synthase gene and their haplotypes as predictors of the therapeutic response to methotrexate in patients with rheumatoid arthritis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Девальд</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Devald</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454092, Челябинск, ул. Воровского, 64;</p></bio><bio xml:lang="en"><p>64, Vorovskogo Str., Chelyabinsk, 454092;</p></bio><email xlink:type="simple">inessa.devald@gmail.com</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>Ходус</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khodus</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454001, Челябинск, ул. Братьев Кашириных, 129</p></bio><bio xml:lang="en"><p>129, Brat’ev Kashirinykh Str., Chelyabinsk, 454001</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хромова</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khromova</surname><given-names>E. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454001, Челябинск, ул. Братьев Кашириных, 129</p></bio><bio xml:lang="en"><p>129, Brat’ev Kashirinykh Str., Chelyabinsk, 454001</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Несмеянова</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesmeyanova</surname><given-names>O. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454076, Челябинск, ул. Воровского, 70</p></bio><bio xml:lang="en"><p>70, Vorovskogo Str., Chelyabinsk, 454076  </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурмистрова</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Burmistrova</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454001, Челябинск, ул. Братьев Кашириных, 129</p></bio><bio xml:lang="en"><p>129, Brat’ev Kashirinykh Str., Chelyabinsk, 454001</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Южно-Уральский государственный медицинский университет» Минздрава России; ФГБОУ ВО «Челябинский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South-Ural State Medical University, Ministry of Health of Russia; Chelyabinsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Челябинский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Chelyabinsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ «Челябинская областная клиническая больница»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Chelyabinsk Regional Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>14</day><month>05</month><year>2019</year></pub-date><volume>57</volume><issue>2</issue><fpage>149</fpage><lpage>153</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Девальд И.В., Ходус Е.А., Хромова Е.Б., Несмеянова О.Б., Бурмистрова А.Л., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Девальд И.В., Ходус Е.А., Хромова Е.Б., Несмеянова О.Б., Бурмистрова А.Л.</copyright-holder><copyright-holder xml:lang="en">Devald I.V., Khodus E.A., Khromova E.B., Nesmeyanova O.B., Burmistrova A.L.</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://rsp.mediar-press.net/rsp/article/view/2697">https://rsp.mediar-press.net/rsp/article/view/2697</self-uri><abstract><p>Основным компонентом стратегии «Лечение до достижения цели» (Treat to target) у больных ревматоидным артритом (РА) признан антагонист фолиевой кислоты метотрексат (МТ). К сожалению, не у всех больных РА терапия МТ одинаково эффективна, часть из них резистентны к проводимому лечению, что ведет к неуклонному прогрессированию деструктивных изменений в суставах, снижению качества жизни и инвалидизации пациентов.</p><p>Цель исследования заключается в поиске генетических предикторов терапевтической эффективности и резистентности к МТ среди однонуклеотидных полимофизмов (single nucleotide polymorphism – SNP) генов фолатного цикла, в частности полиморфизмов гена тимидилатсинтазы TSER 2R/3R и TS 6bp del/ins и их гаплотипов.</p><sec><title>Материал и методы</title><p>Материал и методы. В исследование включено 85 больных с достоверным диагнозом РА, которым в качестве базисного противовоспалительного препарата «первой линии» был назначен МТ в дозе от 10 до 17,5 мг/нед. Оценка терапевтического ответа проводилась через 6 мес непрерывного лечения по динамике индекса DAS28, на основании чего выделены группы «ответивших» и «не ответивших» на МТ. Генетическое типирование SNP TSER 2R/3R и TS 6bp del/ins выполнено методом полимеразной цепной реакции в режиме реального времени.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. У больных РА с разной терапевтической эффективностью МТ обнаружены статистически значимые различия в частоте встречаемости аллелей и генотипов полиморфных вариантов гена тимидилатсинтазы. Так, у больных, резистентных к МТ, достоверно преобладала частота встречаемости гомозиготного генотипа TS 6bp ins/ins (OШ 4,3; 95% ДИ 1,58–11,7; р=0,003), тогда как у пациентов с эффективностью проводимого лечения достоверно преобладала частота встречаемости аллеля TS 6bp del (OШ 0,48; 95% ДИ 0,23–1,0; р=0,049), генотипов TSER 2R/3R (OШ 0,32; 95% ДИ 0,12–0,88; p=0,042) и TS 6bp del/ins (OШ 0,23; 95% ДИ 0,08–0,65; p=0,008). Статистически значимых различий в частоте встречаемости гаплотипов гена тимидилатсинтазы у больных РА с разной терапевтической эффективностью МТ нами не установлено, однако обнаружена тенденция к превалированию частоты гаплотипа TS 3R-6bp del (OШ 0,39; 95% ДИ 0,24–1,09; p=0,081) у «ответивших» на проводимое лечение.</p></sec><sec><title>Заключение</title><p>Заключение. Полученные результаты могут свидетельствовать о наличии взаимосвязи однонуклеотидных полиморфизмов гена тимидилатсинтазы с формированием терапевтического ответа на МТ у больных РА.</p></sec></abstract><trans-abstract xml:lang="en"><p>Methotrexate (MT) is recognized as the main component of the treat to target strategy in patients with rheumatoid arthritis (RA). Unfortunately, MT therapy is not equally effective in all patients with RA, some of them are resistant to such treatment, and have steady progression of destructive changes of the joints, reducing quality of life and leading to disability.</p><sec><title>Objective</title><p>Objective: examination of genetic predictors of therapeutic efficacy and resistance to MT among single-nucleotide polymorphisms (SNP) of folate cycle genes, in particular polymorphisms of the thymidylate synthase gene TSER 2R/3R and TS 6bp del/ins and their haplotypes.</p></sec><sec><title>Subjects and methods</title><p>Subjects and methods. The study included 85 patients with RA, who were prescribed MT at a dose of 10 to 17.5 mg/week as a the «first line» disease-modifying antirheumatic drug. The therapeutic response was evaluated with DAS28 after 6 months of continuous treatment. According to the results of this assessment groups of «respondents» and «non-respondents» to MT were identified. Genetic typing of SNP TSER 2R/3R and TS 6bp del/ins was performed by real-time polymerase chain reaction.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. In RA patients with different efficacy of MT, statistically significant differences in the frequency of alleles and genotypes of polymorphic variants of the gene thymidylate synthase were revealed. Thus, in patients resistant to MT homozygous genotype TS 6bp ins/ins frequency was significantly increased (OR 4,3; 95% CI of 1.58 to 11.7; p=0.003), whereas response to the treatment was associated with occurrence of TS 6bp allele del (HR OF 0.48; 95% CI of 0.23 to 1.0; p=0.049), of TSER 2R/3R (OR 0,32; 95% CI 0,12–0,88; p=0.042) and TS 6bp del/ins (OR 0.23; 95% CI 0.08–0.65; p=0.008) genotypes. We have not established statistically significant differences in the frequency of occurrence of haplotypes of the thymidylate synthase gene in RA patients with different therapeutic efficacy of MT, but we found a tendency to increase of the haplotype TS 3R-6bp del (OR 0.39; 95% CI 0.24–1.09; p=0.081) frequency in the «respondents» to the treatment.</p></sec><sec><title>Conclusion</title><p>Conclusion. Our results may indicate the relationship of the thymidylate synthase gene single nucleotide polymorphisms with therapeutic response to MT in patients with RA.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>метотрексат</kwd><kwd>терапевтический ответ</kwd><kwd>однонуклеотидный полиморфизм</kwd><kwd>тимидилатсинтаза</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>methotrexate</kwd><kwd>therapeutic response</kwd><kwd>single nucleotide polymorphism</kwd><kwd>thymidylate synthase</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">Насонов ЕЛ. Проблемы иммунопатологии ревматоидного артрита: эволюция болезни. Научно-практическая ревматология. 2017;55(3):277-94. doi: 10.14412/1995-4484-2017-277-294</mixed-citation><mixed-citation xml:lang="en">Nasonov EL. 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