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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-ATC-2862</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2862</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Антитела к циклическому цитруллинированному пептиду и ангиопоэтиноподобный белок 4-го типа как маркеры иммунного воспаления и остеопоротических процессов у больных ревматоидным артритом</article-title><trans-title-group xml:lang="en"><trans-title>Antibodies to cyclic citrullinated peptide and angiopoietin-like protein type 4 as markers of immune inflammation and osteoporotic processes in rheumatoid arthritis patients</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8881-8258</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Османова</surname><given-names>Г. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Osmanova</surname><given-names>G. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ассистент кафедры госпитальной терапии ФГБОУ ВО «ВолгГМУ» МЗ РФ; младший научный сотрудник, ФГБНУ «НИИ КиЭР им. А.Б. Зборовского».</p><p>Волгоград</p></bio><bio xml:lang="en"><p>Assistant Professor, Department of Hospital Therapy, Volgograd State Medical University; Junior Research Associate, А. Zborovsky Research Institute of Clinical and Experimental Rheumatology.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@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/0000-0002-4500-7172</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александров</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александров Владислав Андреевич – ассистент кафедры госпитальной терапии ФГБОУ ВО «ВолгГМУ» МЗ РФ; младший научный сотрудник, ФГБНУ «НИИ КиЭР им. А.Б. Зборовского».</p><p>400138, Волгоград, ул. им. Землячки, 76</p><p>Тел.: 8 (8442) 78-90-98, (905) 061-12-23</p></bio><bio xml:lang="en"><p>Vladislav A. Aleksandrov - Assistant Professor, Department of Hospital Therapy, Volgograd State Medical University; Junior Research Associate, А. Zborovsky Research Institute of Clinical and Experimental Rheumatology.</p><p>76 Zemlyachka St Volgograd 400138</p><p>Phone: +7 (8442) 78-90-98, (905) 061-12-23</p></bio><email xlink:type="simple">imlab@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/0000-0002-0686-4067</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., доцент, профессор кафедры клинической лабораторной диагностики ФГБОУ ВО «ВолгГМУ» МЗ РФ; заведующий лабораторией функциональных методов исследования, ультразвуковой диагностики и восстановительной терапии ФГБНУ «НИИ КиЭР им. А.Б. Зборовского».</p><p>Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Department of Clinical Laboratory Diagnostics, Volgograd State Medical University; Head, Laboratory of Functional Research Methods, Ultrasound Diagnostics and Rehabilitation Therapy, А. Zborovsky Research Institute of Clinical and Experimental Rheumatology.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@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/0000-0002-0438-8554</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шилова</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shilova</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., доцент, заведующая кафедрой госпитальной терапии.</p><p>Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Associate Professor, Head, Department of Hospital Therapy, Volgograd State Medical University.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@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/0000-0002-2642-3402</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черкесова</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherkesova</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.м.н., доцент кафедры госпитальной терапии.</p><p>Волгоград</p></bio><bio xml:lang="en"><p>PhD (Medicine), Associate Professor, Department of Hospital Therapy, Volgograd State Medical University.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@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/0000-0002-8124-4239</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александрова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.м.н., старший научный сотрудник.</p><p>Волгоград</p></bio><bio xml:lang="en"><p>PhD (Medicine), Senior Research Associate, А. Zborovsky Research Institute of Clinical and Experimental Rheumatology.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@mail.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/0000-0003-3898-7667</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зборовская</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zborovskaya</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., профессор, директор ФГБНУ «НИИ КиЭР им. А.Б. Зборовского».</p><p>Волгоград</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Director, А. Zborovsky Research Institute of Clinical and Experimental Rheumatology.</p><p>Volgograd</p></bio><email xlink:type="simple">imlab@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 «Волгоградский государственный медицинский университет» Министерства здравоохранения РФ; ФГБНУ «Научно-исследовательский институт клинической и экспериментальной ревматологии имени А.Б. Зборовского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University; А. Zborovsky Research Institute of Clinical and Experimental Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Волгоградский государственный медицинский университет» Министерства здравоохранения РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт клинической и экспериментальной ревматологии имени А.Б. Зборовского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>А. Zborovsky Research Institute of Clinical and Experimental Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>08</day><month>06</month><year>2023</year></pub-date><volume>26</volume><issue>2</issue><fpage>393</fpage><lpage>400</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Османова Г.Я., Александров В.А., Александров А.В., Шилова Л.Н., Черкесова Е.Г., Александрова Н.В., Зборовская И.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Османова Г.Я., Александров В.А., Александров А.В., Шилова Л.Н., Черкесова Е.Г., Александрова Н.В., Зборовская И.А.</copyright-holder><copyright-holder xml:lang="en">Osmanova G.Y., Aleksandrov V.A., Aleksandrov A.V., Shilova L.N., Cherkesova E.G., Aleksandrova N.V., Zborovskaya I.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.mimmun.ru/mimmun/article/view/2862">https://www.mimmun.ru/mimmun/article/view/2862</self-uri><abstract><p>Низкоэнергетические переломы при ревматоидном артрите (РА) чаще встречаются у пациентов с высокой активностью и большой длительностью заболевания, а также с высокими титрами антицитруллинированных антител (ACPA). При воспалительных артритах также отмечено повышение экспрессии ангиопоэтиноподобного белка 4-го типа (ANGPTL4) в костной ткани. Целью исследования был анализ влияния ACPA и ANGPTL4 на системную минеральную плотность кости у пациентов с установленным РA. Антитела к ACPA и содержание ANGPTL4 были протестированы в сыворотке крови 96 больных РА (женщин 91,7%) с помощью иммуноферментного метода. Минеральную плотность поясничных позвонков (BMDL1–L4), шейки бедра и бедренной кости в целом (BMDtotal) измеряли методом двухэнергетической рентгеновской абсорбциометрии (DXA). В исследуемой группе ACPA и ANGPTL4 были положительными у 61,5% и 41,7% пациентов соответственно. ACPA отрицательно коррелировал с BMDtotal, а ANGPTL4 – с BMDL1-L4 (р &lt; 0,05). Разделение пациентов на группы с низкой (n = 34) и высокой (n = 62) активностью по DAS28 продемонстрировало значимое повышение ACPA с ростом активности РА (р = 0,042). Показатели ACPA и ANGPTL4 также были значительно выше в группе больных РА с остеопорозом (ОП) (n = 45) по сравнению с таковыми в группе РА без ОП (n = 51) (р = 0,002 и р = 0,028 соответственно). В общей группе больных РА возраст, индекс массы тела (ИМТ), длительность и активность заболевания не оказывали значимого влияние на ACPA. Но в группе больных РА с ОП зависимость между АСРА и DAS28 стала достоверной (b = 0,31, р = 0,039). Для ANGPTL4 в общей группе больных РА из всех представленных переменных значимой была только длительность заболевания (b = 0,31, р = 0,039). В регрессионной модели показатель BMDtotal в равной степени зависел от возраста пациентов (b = -0,28), ИМТ (b = 0,25) и уровня ACPA (b = -0,26). Поиск связи BMDL1-L4 с различными характеристиками РА продемонстрировал сильное влияние только ANGPTL4 (b = -0,74; R2 = 0,57). Обнаруженная зависимость ANGPTL4 и снижения BMD именно в губчатом слое кости позволяет выделить группу пациентов РА с высоким содержанием ANGPTL4 в качестве группы риска именно по переломам позвоночника, и рассмотреть ANGPTL4 в качестве потенциальной мишени для лечения остеопоротических нарушений.</p></abstract><trans-abstract xml:lang="en"><p>Low-energy fractures in rheumatoid arthritis (RA) are more common in patients with high activity and long duration of disease, and with high titers of anti-citrullinated antibodies (ACPA). Increased expression of angiopoietin-like protein type 4 (ANGPTL4) in bone tissue has also been noted in inflammatory arthritis. The purpose of the present study was to analyze the effect of ACPA and ANGPTL4 on systemic bone mineral density in RA patients. Antibodies to ACPA and ANGPTL4 content were detected in blood serum of 96 RA patients (women, 91.7%) by enzyme immunoassay. Mineral density of the lumbar vertebrae (BMDL1-L4), hip neck, and entire femur (BMDtotal) was measured by dual-energy X-ray absorptiometry (DXA). In study group, the ACPA and ANGPTL4 tests were positive in 61.5% and 41.7% of patients, respectively. Negative correlations were shown between ACPA and BMDtotal, and of ANGPTL4 with BMDL1-L4 (p &lt; 0.05). Separation of the patients into groups with low (n = 34) and high (n = 62) DAS28 activity demonstrated a significant increase in ACPA with increasing RA activity (p = 0.042). ACPA and ANGPTL4 scores were also significantly higher in the group of 45 RA patients with osteoporosis (OP) compared to the RA group without OP (n = 51) showing significant difference at p = 0.002 and p = 0.028, respectively. Patients’ age, body mass index (BMI), duration and activity of the disease had no significant effect on ACPA in the general group of RA patients. However, the correlation between ACPA and DAS28 proved to be significant in the group of RA patients with OP (b = 0.31, p = 0.039). Among all presented variables, the disease duration was the only significant factor for ANGPTL4 in the total group of RA patients (b = 0.31, p = 0.039). In the regression model, BMDtotal showed similar correlations with patients’ age (b = -0.28), BMI (b = 0.25), and ACPA level (b = -0.26). A search for association between BMDL1-L4 and various RA characteristics demonstrated a strong correlation with ANGPTL4 only (b = -0.74; R2 = 0.57). The revealed correlation between ANGPTL4 and decreased BMD specifically in the spongy layer of bone allows us to identify the RA patients with high ANGPTL4 levels as a risk group specifically for spinal fractures thus considering ANGPTL4 as a potential target for treatment of osteoporotic disorders.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>ангиопоэтин-подобный белок 4-го типа</kwd><kwd>антитела против циклического цитруллинового пептида</kwd><kwd>минеральная плотность кости</kwd><kwd>остеопороз</kwd><kwd>низкотравматичные переломы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>angiopoietin-like protein type 4</kwd><kwd>anti-citrullinated protein antibodies</kwd><kwd>bone mineral density</kwd><kwd>osteoporosis</kwd><kwd>fragility fractures</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to the staff of the Volgograd Center for Diagnostics and Treatment of Osteoporosis (chief Polyakova Yu.V.) for their help in collecting clinical materials, as well as to the staff of the Department of Clinical Laboratory Diagnostics of Volgograd Medical University (chief Zavodovsky B.V.) for methodical assistance in conducting laboratory tests.</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">Abdelhafiz D., Baker T., Glascow D.A., Abdelhafiz A. 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