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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">Almanac of Clinical Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Almanac of Clinical Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Альманах клинической медицины</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-0505</issn><issn publication-format="electronic">2587-9294</issn><publisher><publisher-name xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1199</article-id><article-id pub-id-type="doi">10.18786/2072-0505-2019-47-072</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>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">Functional polymorphism of the serotonin reuptake transporter SLC6A4 gene in various clinical variants of irritable bowel syndrome</article-title><trans-title-group xml:lang="ru"><trans-title>Функциональный полиморфизм транспортера обратного захвата серотонина гена SLC6A4 при различных клинических вариантах синдрома раздраженного кишечника</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pushkina</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Пушкина</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Anna V. Pushkina – </bold>Assistant, Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015</italic></p></bio><bio xml:lang="ru"><p><bold>Пушкина Анна Васильевна – </bold>ассистент кафедры пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6011-0998</contrib-id><name-alternatives><name xml:lang="en"><surname>Avalueva</surname><given-names>A. B.</given-names></name><name xml:lang="ru"><surname>Авалуева</surname><given-names>Е. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Elena B. Avalueva – </bold>MD, PhD, Professor, Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss</p><p><italic>47–24 Piskarevsky prospekt, Saint Petersburg, 195067</italic></p></bio><bio xml:lang="ru"><p><bold>Авалуева Елена Борисовна – </bold>доктор медицинских наук, профессор кафедры пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса</p><p><italic>195067, г. Санкт-Петербург, Пискаревский пр-т, 47–24</italic></p></bio><email>avalueva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6151-2021</contrib-id><name-alternatives><name xml:lang="en"><surname>Bakulin</surname><given-names>I. G.</given-names></name><name xml:lang="ru"><surname>Бакулин</surname><given-names>И. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Igor G. Bakulin – </bold>MD, PhD, Professor, Head of the Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015</italic></p></bio><bio xml:lang="ru"><p><bold>Бакулин Игорь Геннадьевич – </bold>доктор медицинских наук, профессор, заведующий кафедрой пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Topanova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Топанова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Aleksandra A. Topanova – </bold>MD, PhD, Deputy Director of the Institute of Medical Education</p><p><italic>2A Akkuratova ul., Saint Petersburg, 197341</italic></p></bio><bio xml:lang="ru"><p><bold>Топанова Александра Александровна – </bold>кандидат медицинских наук, заместитель директора Института медицинского образования по воспитательной и социальной работе</p><p><italic>197341, г. Санкт-Петербург, ул. Аккуратова, 2А</italic></p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Murzina</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Мурзина</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Alla A. Murzina – </bold>Research Fellow, Central Research Laboratory</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015</italic></p></bio><bio xml:lang="ru"><p><bold>Мурзина Алла Александровна – </bold>научный сотрудник Центральной научно-исследовательской лаборатории</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0331-0963</contrib-id><name-alternatives><name xml:lang="en"><surname>Sitkin</surname><given-names>S. I.</given-names></name><name xml:lang="ru"><surname>Ситкин</surname><given-names>С. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Stanislav I. Sitkin – </bold>Dr. med., PhD, Associate Professor, Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss North-Western State Medical University named after I.I. Mechnikov; Head of Epigenetics and Metagenomics Research Group, Institute of Perinatology and Pediatrics Almazov National Medical Research Centre; Leading Research Fellow, Laboratory of Microbiology State Research Institute of Highly Pure Biopreparations</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015, </italic></p><p><italic>2A Akkuratova ul., Saint Petersburg, 197341, </italic></p><p><italic>7 Pudozhskaya ul., Saint Petersburg, 197110</italic></p></bio><bio xml:lang="ru"><p><bold>Ситкин Станислав Игоревич – </bold>Dr. med., кандидат медицинских наук, доцент кафедры пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса ФГБОУ ВО «Северо-Западный государственный медицинский университет имени И.И. Мечникова» Минздрава России; заведующий научно-исследовательской группой эпигенетики и метагеномики Института перинатологии и педиатрии ФГБУ «Национальный медицинский исследовательский центр им. В.А. Алмазова» Минздрава России; ведущий научный сотрудник лаборатории микробиологии ФГУП «Государственный научно-исследовательский институт особо чистых биопрепаратов» ФМБА России</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41, </italic></p><p><italic>197341, г. Санкт-Петербург, ул. Аккуратова, 2А, </italic></p><p><italic>197110, г. Санкт-Петербург, ул. Пудожская, 7</italic></p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lapinsky</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Лапинский</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Igor V. Lapinsky – </bold>Assistant, Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015</italic></p></bio><bio xml:lang="ru"><p><bold>Лапинский Игорь Вадимович – </bold>ассистент кафедры пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Skazyvaeva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Сказываева</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Ekaterina V. Skazyvaeva – </bold>MD, PhD, Associate Professor, Chair of Propaedeutics of Internal Diseases, Gastroenterology and Dietetics named after S.M. Ryss</p><p><italic>41 Kirochnaya ul., Saint Petersburg, 191015</italic></p></bio><bio xml:lang="ru"><p><bold>Сказываева Екатерина Васильевна – </bold>кандидат медицинских наук, доцент кафедры пропедевтики внутренних болезней, гастроэнтерологии и диетологии имени С.М. Рысса</p><p><italic>191015, г. Санкт-Петербург, ул. Кирочная, 41</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">North-Western State Medical University named after I.I. Mechnikov</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Северо-Западный государственный медицинский университет имени И.И. Мечникова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Almazov National Medical Research Centre</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр им. В.А. Алмазова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">State Research Institute of Highly Pure Biopreparations</institution></aff><aff><institution xml:lang="ru">ФГУП «Государственный научно-исследовательский институт особо чистых биопрепаратов» ФМБА России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-22" publication-format="electronic"><day>22</day><month>12</month><year>2019</year></pub-date><volume>47</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>496</fpage><lpage>504</lpage><history><date date-type="received" iso-8601-date="2019-12-21"><day>21</day><month>12</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-12-21"><day>21</day><month>12</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Pushkina A.V., Avalueva A.B., Bakulin I.G., Topanova A.A., Murzina A.A., Sitkin S.I., Lapinsky I.V., Skazyvaeva E.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Пушкина А.В., Авалуева Е.Б., Бакулин И.Г., Топанова А.А., Мурзина А.А., Ситкин С.И., Лапинский И.В., Сказываева Е.В.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Pushkina A.V., Avalueva A.B., Bakulin I.G., Topanova A.A., Murzina A.A., Sitkin S.I., Lapinsky I.V., Skazyvaeva E.V.</copyright-holder><copyright-holder xml:lang="ru">Пушкина А.В., Авалуева Е.Б., Бакулин И.Г., Топанова А.А., Мурзина А.А., Ситкин С.И., Лапинский И.В., Сказываева Е.В.</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://almclinmed.ru/jour/article/view/1199">https://almclinmed.ru/jour/article/view/1199</self-uri><abstract xml:lang="en"><p><bold>Rationale: </bold>Irritable bowel syndrome (IBS) is a multifactorial disease, the genetic aspect of which is being actively studied.</p><p><bold>Aim: </bold>To investigate functional polymorphism of the serotonin reuptake transporter (<italic>SERT</italic>) <italic>SLC6A4 </italic>gene of various clinical variants of IBS.</p><p><bold>Materials and methods: </bold>We performed a cross-sectional single center study in 79 Caucasian patients with IBS (according to the Rome criteria IV). The patients were divided into two groups: group 1, IBS with diarrhea (IBS-D, n = 45) and group 2, IBS with constipation (IBS-C, n = 34). The control group included 59 Caucasian patients with gastrointestinal disorders without IBS. Polymorphism <italic>5-HTTLPR </italic>of the <italic>SLC6A4 </italic>gene was assessed in all subjects. In group 1 patients, blood serotonin levels were measured and psychological tests were performed, including Spielberger's State / Trait Anxiety Inventory, quality of life by SF36 and GSRS, Asthenia scale, VAS scores for pain intensity.</p><p><bold>Results: </bold>Thirty-five of 45 (77.8%) patients with IBS-D carried the mutant <italic>S </italic>allele, which was significantly more frequent than in the IBS-C group (p = 0.002) and in the control group (p = 0.005). There were no statistically significant differences (p = 0.54) in the frequency of detection of the homozygous <italic>LL </italic>genotype (normal allele) and the heteroand homozygous mutant alleles (<italic>SL </italic>and <italic>SS</italic>) genotype between the IBS-C and control patients. In the IBS-D group, a gender difference for the mutant <italic>SS </italic>allele of <italic>5-HTTLPR </italic>was found, with significantly higher frequency in female patients (p = 0.0147). No significant gender differences in the genotype distribution between the patients with IBS-C and the control group were found. There were also no differences in blood serotonin levels in the IBS patients with various <italic>5-HTTLPR </italic>types (p = 0.086); they were all in the reference range. However, there was a trend towards lower serotonin levels in the <italic>LL </italic>genotype carriers compared to those with the <italic>SS</italic>/<italic>SL </italic>polymorphisms. The Gastroenterological inventory <italic>GSRS </italic>demonstrated significantly higher total score for the constipation syndrome in the patients with homozygous <italic>LL 5-HTTLPR </italic>polymorphism, compared to that in the patients with the <italic>SS</italic>/<italic>SL </italic>genotype (p = 0.013).</p><p><bold>Conclusion: </bold>The results may be related to lower expression of the <italic>SLC6A4 </italic>gene in the carriers of the mutant allele in the <italic>5-HTTLPR </italic>promoter and subsequent decreased rate of serotonin uptake, with resulting stimulation of the gastrointestinal tract. The <italic>SERT </italic>polymorphism of the <italic>SLC6A4 </italic>gene is worth further investigation as a potential candidate gene in the IBS pathophysiology.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность. </bold>Синдром раздраженного кишечника (СРК) относится к многофакторным заболеваниям, генетический аспект которых находится в фокусе внимания исследователей.</p><p><bold>Цель – </bold>изучить функциональный полиморфизм транспортера обратного захвата серотонина гена <italic>SLC6A4 </italic>при разных формах СРК.</p><p><bold>Материал и методы. </bold>Проведено поперечное (одномоментное) одноцентровое исследование. Основную группу составили 79 пациентов европеоидной расы с диагнозом СРК (установлен в соответствии с Римскими критериями IV пересмотра), которых распределили на 2 подгруппы: СРК с преобладанием диареи (СРК-Д, n = 45) и СРК с преобладанием запоров (СРК-З, n = 34). В контрольную группу вошли 59 пациентов европеоидной расы гастроэнтерологического профиля без СРК. Всем включенным в исследование пациентам проводился генетический анализ с целью оценки полиморфизма <italic>5-HTTLPR </italic>гена <italic>SLC6A4</italic>. В основной группе также определяли уровень содержания серотонина в крови, проводили психологическое тестирование с оценкой реактивной и личностной тревожности с использованием опросника Спилбергера – Ханина, оценивали качество жизни с помощью опросников SF-36 и GSRS, выраженность астении с помощью шкалы астенического состояния, интенсивность боли по визуальной аналоговой шкале.</p><p><bold>Результаты. </bold>У пациентов с СРК-Д частота носительства мутантного аллеля <italic>S </italic>составила 77,8% (35 пациентов из 45), что оказалось статистически значимо выше, чем в группе СРК-З (р = 0,002) и в контрольной группе (р = 0,005). Между группой пациентов с СРК-З и контролем не получено статистически значимых различий (р = 0,54) в частоте обнаружения гомозиготного генотипа по нормальному аллелю (<italic>LL</italic>) и гетерои гомозиготного генотипа с мутантным аллелем (<italic>SL </italic>и <italic>SS</italic>). В группе СРК-Д выявлено гендерное различие: гомозиготный генотип по мутантному аллелю (<italic>SS</italic>) <italic>5-HTTLPR </italic>статистически значимо чаще определялся у женщин (p = 0,0147); у пациентов c СРК-З и контрольной группы статистически значимых гендерных различий в распределении генотипа не было. Уровень серотонина в крови пациентов с СРК в зависимости от генотипа <italic>5-HTTLPR </italic>не различался (p = 0,086) и был в пределах референсных значений, однако следует отметить тенденцию к снижению уровня серотонина у носителей <italic>LL </italic>по сравнению с носителями полиморфизмов <italic>SS</italic>/<italic>SL</italic>. Анализ гастроэнтерологического опросника GSRS показал статистически значимое (p = 0,013) повышение суммарного балла констипационного синдрома у пациентов с гомозиготным <italic>LL </italic>полиморфизмом <italic>5-HTTLPR </italic>по сравнению с генотипом <italic>SS</italic>/<italic>SL</italic>.</p><p><bold>Заключение. </bold>Выявленные особенности могут быть обусловлены сниженной экспрессией гена <italic>SLC6A4 </italic>у носителей мутантного аллеля в промоторе <italic>5-HTTLPR </italic>и как результат – замедленной скоростью поглощения серотонина, который оказывает стимулирующее влияние на желудочно-кишечный тракт. Полиморфизм транспортера обратного захвата серотонина гена <italic>SLC6A4 </italic>заслуживает дальнейшего изучения как потенциальный ген-кандидат в патофизиологии СРК.</p></trans-abstract><kwd-group xml:lang="en"><kwd>irritable bowel syndrome</kwd><kwd>serotonin</kwd><kwd>serotonin reuptake transporter</kwd><kwd>polymorphism</kwd><kwd>genotype</kwd><kwd>alleles</kwd><kwd>5-HTTLPR</kwd><kwd>SLC6A4</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>синдром раздраженного кишечника</kwd><kwd>серотонин</kwd><kwd>транспортер обратного захвата серотонина</kwd><kwd>полиморфизм</kwd><kwd>генотип</kwd><kwd>аллели</kwd><kwd>SERT</kwd><kwd>5-HTTLPR</kwd><kwd>SLC6A4</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Lovell RM, Ford AC. Global prevalence of and risk factors for irritable bowel syndrome: a meta-analysis. 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