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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">pulmo</journal-id><journal-title-group><journal-title xml:lang="ru">Пульмонология</journal-title><trans-title-group xml:lang="en"><trans-title>PULMONOLOGIYA</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-0189</issn><issn pub-type="epub">2541-9617</issn><publisher><publisher-name>Scientific and Practical Journal “PULMONOLOGIYA” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18093/0869-0189-2024-34-6-810-821</article-id><article-id custom-type="elpub" pub-id-type="custom">pulmo-4424</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 STUDIES</subject></subj-group></article-categories><title-group><article-title>Анализ связи липополисахарида с другими маркерами воспаления и клинико-функциональными характеристиками пациентов с хронической обструктивной болезнью легких вне обострения</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the relationship between the serum lipopolysaccharide level and other inflammation markers, clinical and functional characteristics of patients with COPD without exacerbation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6208-3038</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнова</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnova</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнова Марина Игоревна – к. м. н., руководитель лаборатории профилактики хронических болезней органов дыхания.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Marina I. Smirnova - Candidate of Medicine, Head of Laboratory for Prevention of Chronic Respiratory Diseases.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">smirnova.m.i@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/0000-0001-9267-4931</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Антипушина</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Antipushina</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антипушина Диана Николаевна – к. м. н., старший научный сотрудник лаборатории профилактики хронических болезней органов дыхания.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Diana N. Antipushina - Candidate of Medicine, Senior Researcher, Laboratory for Prevention of Chronic Respiratory Diseases.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">dantipushina@gnicpm.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/0000-0001-8498-7030</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курехян</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurekhyan</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курехян Армине Сарибековна – научный сотрудник лаборатории профилактики хронических болезней органов дыхания.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Armine S. Kurekhyan - Researcher, Laboratory of Prevention of Chronic Respiratory Diseases.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">arminesar@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/0000-0002-6108-3538</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гуманова</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Gumanova</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гуманова Надежда Георгиевна – к. б. н., ведущий научный сотрудник Центра координации фундаментальной научной деятельности.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Nadezhda G. Gumanova - Candidate of Biology, Leading Researcher, Center for Coordination of Fundamental Scientific Activity.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">ngumanova@gnicpm.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/0000-0001-5187-6190</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кошеляевская</surname><given-names>Я. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Koshelyaevskaya</surname><given-names>Ya. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кошеляевская Яна Николаевна – программист лаборатории применения амбулаторных диагностических методов в профилактике хронических неинфекционных заболеваний.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Yana N. Koshelyaevskaya - Programmer, Laboratory for the use of Outpatient Diagnostic Methods in the Prevention of Chronic Non-Communicable Diseases.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">ykoshelyaevskaya@gnicpm.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8665-9129</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Метельская</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Metelskaya</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Метельская Виктория Алексеевна – д. б. н., профессор, главный научный сотрудник лаборатории изучения биохимических маркеров риска хронических неинфекционных заболеваний имени Н.В. Перовой отдела фундаментальных и прикладных аспектов ожирения НМИЦТПМ; профессор кафедры клинической лабораторной диагностики с курсом лабораторной иммунологии РМАНПО.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; 123995, Москва, ул. Баррикадная, 2, стр. 1; тел.: (499) 553-68-14</p></bio><bio xml:lang="en"><p>Victoria A. Metelskaya - Doctor of Biology, Professor, Chief Researcher, Laboratory for the Study of Biochemical Markers of Chronic Non-Communicable Disease Risk named after N.V. Perova, Department of Fundamental and Applied Aspects of Obesity, Federal State Budgetary INMRC for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian Federation; Professor, Department of Clinical Laboratory Diagnostics with a course in laboratory immunology, RMA CPE.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; ul. Barrikadnaya 2/1, Moscow, 123995; tel.: (499) 553-68-14</p></bio><email xlink:type="simple">vmetelskaya@gnicpm.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3124-5655</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богданова</surname><given-names>Н. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogdanova</surname><given-names>N. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Богданова Наталья Леонидовна – младший научный сотрудник Центра координации фундаментальной научной деятельности.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Natalya L. Bogdanova - Junior Researcher, Center for Coordination of Fundamental Scientific Activity.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">nlbogdanova@gnicpm.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/0000-0001-6985-7131</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Покровская</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pokrovskaya</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Покровская Мария Сергеевна – ведущий научный сотрудник, руководитель лаборатории “Банк биологического материала”.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Maria S. Pokrovskaya - Leading Researcher, Head of the Laboratory “Bank of Biological Material”.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">mpokrovskaya@gnicpm.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0003-2681</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Литинская</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Litinskaya</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Литинская Ольга Анатольевна – к. м. н., заведующая клинико-диагностической лабораторией.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Olga A. Litinskaya - Candidate of Medicine, Head of the Clinical Diagnostic Laboratory.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">olitinskaya@gnicpm.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/0000-0003-2062-1536</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Концевая</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kontsevaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Концевая Анна Васильевна – д. м. н., доцент, заместитель директора по научной и аналитической работе.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Anna V. Kontsevaya - Doctor of Medicine, Associate Professor, Deputy Director for Research and Analytical Work.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">akontsevaya@gnicpm.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/0000-0002-4453-8430</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Драпкина</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Drapkina</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Драпкина Оксана Михайловна – д. м. н., профессор, академик Российской академии наук, директор.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (499) 553-68-99</p></bio><bio xml:lang="en"><p>Oksana M. Drapkina - Doctor of Medicine, Professor, Academician of Russian Academy of Sciences, Director.</p><p>Petroverigskiy per. 10, build. 3, Moscow, 101990; tel.: (499) 553-68-99</p></bio><email xlink:type="simple">odrapkina@gnicpm.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/0000-0001-9495-0266</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макаров</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Макаров Валентин Владимирович – к. б. н., заместитель директора Института синтетической биологии и генной инженерии по научно-экспериментальной работе.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (495) 540-61-71</p></bio><bio xml:lang="en"><p>Valentin V. Makarov - Candidate of Biology, Deputy Director, Institute of Synthetic Biology and Genetic Engineering for Scientific and Experimental Work.</p><p>Ul. Pogodinskaya 10/1, Moscow, 119121; tel.: (495) 540-61-71</p></bio><email xlink:type="simple">makarov@cspfmba.ru</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7942-8004</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юдин</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Yudin</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юдин Сергей Михайлович – д. м. н., профессор, генеральный директор.</p><p>101990, Москва, Петроверигский пер., 10, стр. 3; тел.: (495) 540-61-71</p></bio><bio xml:lang="en"><p>Sergey M. Yudin - Doctor of Medicine, Professor, General Director.</p><p>Ul. Pogodinskaya 10/1, Moscow, 119121; tel.: (495) 540-61-71</p></bio><email xlink:type="simple">yudin@cspmz.ru</email><xref ref-type="aff" rid="aff-7"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution «National Medical Research Center for Therapy and Preventive Medicine» of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>programmer of Ambulatory Diagnostic Methods Laboratory, Federal State Budgetary Institution «National Medical Research Center for Therapy and Preventive Medicine» of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации; Федеральное государственное бюджетное образовательное учреждение дополнительного профессионального образования «Российская медицинская академия непрерывного профессионального образования» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian Federation; Russian Federal Academy of Continued Medical Education, Healthcare Ministry of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution " Federal State Institution «National Medical Research Center for Therapy and Preventive Medicine» of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Центр стратегического планирования и управления медико-биологическими рисками здоровью» Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution “Center for Strategic Planning and Management of Medical and Biological Health Risks” Federal Medical and Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Центр стратегического планирования и управления медико-биологическими рисками здоровью» Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>11</day><month>12</month><year>2024</year></pub-date><volume>34</volume><issue>6</issue><fpage>810</fpage><lpage>821</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнова М.И., Антипушина Д.Н., Курехян А.С., Гуманова Н.Г., Кошеляевская Я.Н., Метельская В.А., Богданова Н.Л., Покровская М.С., Литинская О.А., Концевая А.В., Драпкина О.М., Макаров В.В., Юдин С.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Смирнова М.И., Антипушина Д.Н., Курехян А.С., Гуманова Н.Г., Кошеляевская Я.Н., Метельская В.А., Богданова Н.Л., Покровская М.С., Литинская О.А., Концевая А.В., Драпкина О.М., Макаров В.В., Юдин С.М.</copyright-holder><copyright-holder xml:lang="en">Smirnova M.I., Antipushina D.N., Kurekhyan A.S., Gumanova N.G., Koshelyaevskaya Y.N., Metelskaya V.A., Bogdanova N.L., Pokrovskaya M.S., Litinskaya O.A., Kontsevaya A.V., Drapkina O.M., Makarov V.V., Yudin S.M.</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://journal.pulmonology.ru/pulm/article/view/4424">https://journal.pulmonology.ru/pulm/article/view/4424</self-uri><abstract><p>Липополисахарид (ЛПС) грамотрицательных бактерий рассматривается как фактор патогенеза многих болезней. Также известна его роль как индуктора обострений хронической обструктивной болезни легких (ХОБЛ), однако при стабильной ХОБЛ он изучен недостаточно.</p><p>Целью исследования явилась оценка связи уровня ЛПС сыворотки крови с маркерами воспаления, клиническими и функциональными характеристиками пациентов с ХОБЛ вне периода обострения.</p><sec><title>Материалы и методы</title><p>Материалы и методы. В пилотное исследование из базы данных Федерального государственного бюджетного учреждения «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации включены больные ХОБЛ (n = 29) без обострений в течение ≥ 3 мес., при которых требовались антибактериальная терапия или назначение системных глюкокортикостероидов, а также пациенты без болезней органов дыхания (n = 27), сопоставимые по возрасту (63,9 ± 6,3 года) и полу (69 % – мужчины). Различия считались статистически значимыми при р &lt; 0,05, при р ≥ 0,05–0,075 они рассматривались как тенденция (изменение переменных в одном направлении, требующее дальнейшего изучения).</p></sec><sec><title>Результаты</title><p>Результаты. В группе ХОБЛ отмечена тенденция к снижению уровней ЛПС (p = 0,062), уровни триметиламиноксида и С-реактивного белка были значимо выше, чем в группе контроля (p &lt; 0,05); уровни фибриногена и лейкоцитов не различались. Выявлены прямая корреляционная связь в группе ХОБЛ между уровнем ЛПС и качеством жизни по оценочному тесту ХОБЛ (COPD Assessment Test™ – CAT) (r = 0,43; p = 0,019), обратная корреляция с показателями спирометрии (p &lt; 0,05) и тенденции к взаимосвязи уровня ЛПС с возрастом (r = –0,34; p = 0,075), индексом массы тела (r = 0,34; p = 0,072), окружностью талии (r = 0,35; p = 0,064) и статусом курения (r = 0,35; p = 0,061). Подобных связей в группе контроля не отмечено. Связи с обострениями ХОБЛ при проспективном наблюдении (12 мес.) также не выявлено.</p></sec><sec><title>Заключение</title><p>Заключение. Уровень ЛПС имеет тенденцию к различию между пациентами со стабильной ХОБЛ и без ХОБЛ, коррелирует с выраженностью симптомов и нарушений функции внешнего дыхания у больных ХОБЛ. Целесообразно проведение более крупных исследований в этой области.</p></sec></abstract><trans-abstract xml:lang="en"><p>Lipopolysaccharide (LPS) from gram-negative bacteria is considered a pathogenetic factor of many diseases. It is also known to include exacerbations of chronic obstructive pulmonary disease (COPD), but this effect has been little studied in stable COPD.</p><p>The aim of the study was to evaluate the relationship between serum LPS levels and inflammatory markers, clinical and functional characteristics of COPD without exacerbation.</p><sec><title>Methods</title><p>Methods. The pilot study included 29 patients with COPD who did not have any exacerbations requiring antibacterial therapy or systemic steroids for 3 or more months and 27 patients without respiratory diseases, matched by age and gender (63.9 ± 6.3 years, 69% men). All patient data were taken from the database of National Medical Research Center for Therapy and Preventive Medicine. The differences were considered statistically significant at p &lt; 0.05; and a trend (change of variables in one direction requiring further investigation) at p ≥ 0.05 – 0.075.</p></sec><sec><title>Results</title><p>Results. The COPD group showed a tendency towards a lower LPS level (p = 0.062). The levels of TMAO and CRP were significantly lower in the control group (p &lt; 0.05), and the fibrinogen and leukocyte levels did not differ. In the COPD group, a direct correlation was found between the LPS level and quality of life according to the CAT (COPD Assessment Test™) (r = 0.43; p = 0.019), an inverse correlation with the spirometry parameters (p &lt; 0.05), and a trend towards an association between LPS and age (r = –0.34; p = 0.075), body mass index (r = 0.34; p = 0.072), waist circumference (r = 0.35; p = 0.064), and smoking status (r = 0.35; p = 0.061). No such relationships were seen in the control group. No relationship with exacerbations of COPD was found during the prospective follow-up (12 months).</p></sec><sec><title>Conclusion</title><p>Conclusion. The level of LPS tends to differ between patients with stable COPD and patients without COPD, and correlates with severity of symptoms and lung function impairment in COPD patients. Further larger studies in this area are advisable.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>липополисахарид</kwd><kwd>хроническая обструктивная болезнь легких (ХОБЛ)</kwd><kwd>обострение ХОБЛ</kwd><kwd>С-реактивный белок</kwd><kwd>фибриноген</kwd><kwd>триметиламиноксид</kwd><kwd>объем форсированного выдоха за 1-ю секунду</kwd><kwd>форсированная жизненная емкость легких</kwd><kwd>CAT (COPD Assessment Test™) – оценочный тест по ХОБЛ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lipopolysaccharide</kwd><kwd>chronic obstructive pulmonary disease (COPD)</kwd><kwd>exacerbation of COPD</kwd><kwd>C-reactive protein</kwd><kwd>fibrinogen</kwd><kwd>trimethylamine oxide</kwd><kwd>forced expiratory volume in 1 second</kwd><kwd>forced vital capacity</kwd><kwd>CAT (COPD Assessment Test™)</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках исполнения договоров № 0373100122120000020 от 15.05.20 и № 0373100122121000005 от 05.04.21 между Федеральным государственным бюджетным учреждением «Национальный медицинский исследовательский центр терапии и профилактической медицины» Министерства здравоохранения Российской Федерации и Федеральным государственным бюджетным учреждением «Центр стратегического планирования и управления медико-биологическими рисками здоровью» Федерального медико-биологического агентства при поддержке Федерального медико-биологического агентства в рамках Государственного задания № 388-00154-22-00</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the contracts No.0373100122120000020 dated 15.05.20 and No.0373100122121000005 dated 05.04.21 between the Federal State Budgetary Institution National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian Federation and Federal State Budgetary Institution “Center for Strategic Planning and Management of Medical and Biological Health Risks” Federal Medical and Biological Agency within the framework of the State Assignment No.388-00154-22-00. Ethical review. The research protocols were approved by the Independent Ethics Committee of the Federal State Budgetary Institution National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian Federation (Protocol No.03-08/20 dated 28.04.20)</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">Verhaar B.J.H., Prodan A., Nieuwdorp M, Muller M. Gut microbiota in hypertension and atherosclerosis: a review. Nutrients. 2020; 12 (10): 2982. DOI: 10.3390/nu12102982.</mixed-citation><mixed-citation xml:lang="en">Verhaar B.J.H., Prodan A., Nieuwdorp M, Muller M. Gut microbiota in hypertension and atherosclerosis: a review. Nutrients. 2020; 12 (10): 2982. 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