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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">cfpd</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень физиологии и патологии дыхания</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin Physiology and Pathology of Respiration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-5029</issn><publisher><publisher-name>Дальневосточный научный центр физиологии и патологии дыхания</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36604/1998-5029-2024-92-40-46</article-id><article-id custom-type="elpub" pub-id-type="custom">cfpd-1167</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>Оценка степени повреждения ДНК в лейкоцитах больных хронической обструктивной болезнью легких</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of the degree of DNA damage in leukocytes of patients with chronic obstructive pulmonary disease</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>Гассан</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gassan</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дина Анатольевна Гассан, канд. мед. наук, научный сотрудник, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Dina A. Gassan, PhD (Med.), Staff Scientist, Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">dani-shi@mail.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>Наумов</surname><given-names>Д. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumov</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Денис Евгеньевич Наумов, канд. мед. наук, зав. лабораторией, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Denis E. Naumov, PhD (Med.), Head of Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">denn1985@bk.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>Сугайло</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sugaylo</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ивана Юрьевна Сугайло, канд. мед. наук, младший научный сотрудник, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Ivana Yu. Sugaylo, PhD (Med.), Junior Staff Scientist, Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">ivanka_888@mail.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>Котова</surname><given-names>О. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kotova</surname><given-names>O. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Олеся Олеговна Котова, канд. мед. наук, младший научный сотрудник, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Olesya O. Kotova, PhD (Med.), Junior Staff Scientist, Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">foxy_voxy_on@mail.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>Горчакова</surname><given-names>Я. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorchakova</surname><given-names>Y. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яна Геннадьевна Горчакова, лаборант-исследователь, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Yana G. Gorchakova, Research Laboratory Assistant, Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">yana.janet.gorchakova@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>Шелудько</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Sheludko</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елизавета Григорьевна Шелудько, канд. мед. наук, научный сотрудник, лаборатория молекулярных и трансляционных исследований</p><p>675000, г. Благовещенск, ул. Калинина, 22</p></bio><bio xml:lang="en"><p>Elizaveta G. Sheludko, PhD (Med.), Staff Scientist, Laboratory of Molecular and Translational Research</p><p>22 Kalinina Str., Blagoveshchensk, 675000</p></bio><email xlink:type="simple">liza.sheludko@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение «Дальневосточный научный центр физиологии и патологии дыхания»<country>Россия</country></aff><aff xml:lang="en">Far Eastern Scientific Center of Physiology and Pathology of Respiration<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>06</month><year>2024</year></pub-date><volume>0</volume><issue>92</issue><fpage>40</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гассан Д.А., Наумов Д.Е., Сугайло И.Ю., Котова О.О., Горчакова Я.Г., Шелудько Е.Г., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Гассан Д.А., Наумов Д.Е., Сугайло И.Ю., Котова О.О., Горчакова Я.Г., Шелудько Е.Г.</copyright-holder><copyright-holder xml:lang="en">Gassan D.A., Naumov D.E., Sugaylo I.Y., Kotova O.O., Gorchakova Y.G., Sheludko E.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://cfpd.elpub.ru/jour/article/view/1167">https://cfpd.elpub.ru/jour/article/view/1167</self-uri><abstract><sec><title>Введение</title><p>Введение. Окислительный стресс играет ключевую роль в патогенезе ХОБЛ. Сигаретный дым индуцирует окислительный стресс, в результате которого происходит повреждение ДНК в клетках. Каналы с транзиторным рецепторным потенциалом (TRP) способны опосредовать эффекты сигаретного дыма и активных форм кислорода.</p></sec><sec><title>Цель</title><p>Цель. Изучение уровня фосфорилирования гистонов H2AX, указывающего на повреждение ДНК, в лейкоцитах больных ХОБЛ и установление взаимосвязи экспрессии каналов TRPV1 и TRPV4 с выявленными особенностями.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование было включено 47 больных ХОБЛ разной степени тяжести и 25 лиц контрольной группы. Всем исследуемым была проведена спирометрия для оценки вентиляционной функции легких. Фосфорилирование гистонов H2AX и экспрессию TRPV1/TRPV4 на лейкоцитах определяли методом проточной цитометрии. Для поиска взаимосвязи между количественными переменными использовали коэффициент ранговой корреляции Спирмена (ρ).</p></sec><sec><title>Результаты</title><p>Результаты. Лимфоциты больных ХОБЛ характеризовались более высоким уровнем γH2AX (%), чем лимфоциты лиц контрольной группы (p=0,04). Лимфоциты здоровых курильщиков также демонстрировали большую степень повреждения ДНК по сравнению с не курившими лицами (p=0,02). Значимые отличия отмечались при сравнении экспрессии γH2AX (%) между больными ХОБЛ и здоровыми не курившими лицами в лимфоцитах (p=0,001) и моноцитах (p=0,04). Курение более 20 пачка-лет сопровождалось более высокой экспрессией γH2AX (%) в лимфоцитах (p=0,04) больных ХОБЛ. Экспрессия TRPV1 и γH2AX (%) демонстрировала достоверные корреляции на гранулоцитах (ρ=0,76, p&lt;0,001), лимфоцитах (ρ=0,34, p=0,03) и моноцитах (ρ=0,55, p&lt;0,001).</p></sec><sec><title>Заключение</title><p>Заключение. Больные ХОБЛ отличаются от лиц контрольной группы более выраженным повреждением ДНК, преимущественно проявляющимся в лимфоцитах. Курение является фактором, негативно влияющим на формирование разрывов ДНК. Экспрессия TRPV1, вероятно, играет роль в окислительном повреждении ДНК в лейкоцитах больных ХОБЛ за счет увеличения продукции активных форм кислорода.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Oxidative stress plays a key role in the pathogenesis of COPD. Cigarette smoke induces oxidative stress, which causes DNA damage in cells. Transient receptor potential (TRP) channels are capable of mediating the effects of tobacco smoke and reactive oxygen species.</p></sec><sec><title>Aim</title><p>Aim. Studying the level of H2AX histones phosphorylation (γH2AX) indicating DNA damage in leukocytes of COPD patients and establishing its relationship with TRPV1 and </p></sec><sec><title>TRPV4 expression</title><p>TRPV4 expression.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 47 patients with COPD of varying severity and 25 controls. All subjects underwent spirometry to assess lung function. Histone H2AX phosphorylation and TRPV1/TRPV4 expression on leukocytes were determined by flow cytometry. Spearman's rank correlation coefficient (ρ) was used to search for relationships between quantitative variables.</p></sec><sec><title>Results</title><p>Results. Lymphocytes of COPD patients were characterized by higher level of γH2AX (%) than lymphocytes from the controls (p=0.04). Lymphocytes of smokers also showed a greater degree of DNA damage as compared to healthy non-smokers (p=0.02). Significant differences were observed when comparing γH2AX expression (%) between COPD patients and healthy non-smokers in lymphocytes (p=0.001) and monocytes (p=0.04). Smoking more than 20 pack-years was associated with higher γH2AX (%) in lymphocytes (p=0.04) of COPD patients. Expression of TRPV1 and γH2AX (%) showed significant correlations on granulocytes (ρ=0.76, p&lt;0.001), lymphocytes (ρ=0.34, p=0.03) and monocytes (ρ=0.55, p&lt;0.001).</p></sec><sec><title>Conclusion</title><p>Conclusion. COPD patients differ from the control group by more pronounced DNA damage, which is most evident in lymphocytes. Smoking is a factor that negatively affects the formation of DNA breaks. TRPV1 expression may play a role in oxidative DNA damage in leukocytes by increasing the production of reactive oxygen species.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>повреждение ДНК</kwd><kwd>H2AX</kwd><kwd>TRP каналы</kwd><kwd>ХОБЛ</kwd><kwd>курение</kwd><kwd>лейкоциты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>DNA damage</kwd><kwd>H2AX</kwd><kwd>TRP channels</kwd><kwd>COPD</kwd><kwd>smoking</kwd><kwd>leukocytes</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено в рамках программы фундаментальных исследований Министерства науки и высшего образования РФ (FGWF-2022-0005)</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This study was supported by the Ministry of Science and Higher Education of the Russian Federation under the Program for Basic Research (FGWF-2022-0005)</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">MacNee W., Tuder R.M. 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