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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">porozendo</journal-id><journal-title-group><journal-title xml:lang="ru">Остеопороз и остеопатии</journal-title><trans-title-group xml:lang="en"><trans-title>Osteoporosis and Bone Diseases</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2680</issn><issn pub-type="epub">2311-0716</issn><publisher><publisher-name>Endocrinology Research Centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14341/osteo13167</article-id><article-id custom-type="elpub" pub-id-type="custom">porozendo-13167</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>CLINICAL GUIDELINES</subject></subj-group></article-categories><title-group><article-title>Иммунологические и гуморальные факторы при ревматоидном артрите: связь с минеральной плотностью костной ткани</article-title><trans-title-group xml:lang="en"><trans-title>Immunological and humoral factors in rheumatoid arthritis: the association with bone mineral density</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2809-0197</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Добровольская</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobrovolskaya</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Добровольская Ольга Валерьевна, к.м.н., научный сотрудник лаборатории остеопороза</p><p>115522, г. Москва, Каширское ш., д. 34А </p><p>Researcher ID: AAF-2921-2021;</p><p>Scopus Author ID: 57197823569;</p><p>eLibrary SPIN: 1477-8189</p></bio><bio xml:lang="en"><p>Olga V. Dobrovolskaya, MD, PhD</p><p>34A, Kashirskoye sh., Moscow, 115522</p><p>Researcher ID: AAF-2921-2021;</p><p>Scopus Author ID: 57197823569;</p><p>eLibrary SPIN: 1477-8189</p></bio><email xlink:type="simple">olgavdobr@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/0000-0003-0961-9785</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демин</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Demin</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Демин Николай Викторович, м.н.с. лаборатории остеопороза</p><p>Москва</p><p>Researcher ID: AAF-3400-2021;</p><p>Scopus Author ID: 7006802179</p></bio><bio xml:lang="en"><p>Nikolay V. Demin, MD</p><p>Moscow</p><p>Researcher ID: AAF-3400-2021;</p><p>Scopus Author ID: 7006802179</p></bio><email xlink:type="simple">deminick@rambler.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/0000-0003-0560-3495</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козырева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozyreva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козырева Мария Витальевна, м.н.с. лаборатории остеопороза </p><p>Москва</p><p>Researcher ID: HHZ-3451-2022</p></bio><bio xml:lang="en"><p>Maria V. Kozyreva, MD</p><p>Moscow</p><p>Researcher ID: HHZ-3451-2022</p></bio><email xlink:type="simple">doginya@yandex.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/0000-0001-7501-9185</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самаркина</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Samarkina</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самаркина Елена Юрьевна, м.н.с. лаборатории иммунологии и молекулярной биологии ревматических заболеваний </p><p>Москва</p></bio><bio xml:lang="en"><p>Elena Yu. Samsrkina, MD</p><p>Moscow</p></bio><email xlink:type="simple">epid@irramn.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/0000-0003-4739-4302</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Торопцова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Toroptsova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Торопцова Наталья Владимировна, д.м.н., заведующая лабораторией остеопороза</p><p>Москва</p><p>Researcher ID: I-9030-2017;</p><p>Scopus Author ID: 6507457856;</p><p>eLibrary SPIN: 5650-2058</p></bio><bio xml:lang="en"><p>Natalia V. Toroptsova, MD, PhD</p><p>Moscow</p><p>Researcher ID: I-9030-2017;</p><p>Scopus Author ID: 6507457856</p></bio><email xlink:type="simple">torop@irramn.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБНУ «Научно-исследовательский институт ревматологии имени В.А. Насоновой»<country>Россия</country></aff><aff xml:lang="en">V.A. Nasonova Research Institute of Rheumatology<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>06</month><year>2024</year></pub-date><volume>27</volume><issue>2</issue><fpage>24</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Добровольская О.В., Демин Н.В., Козырева М.В., Самаркина Е.Ю., Торопцова Н.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Добровольская О.В., Демин Н.В., Козырева М.В., Самаркина Е.Ю., Торопцова Н.В.</copyright-holder><copyright-holder xml:lang="en">Dobrovolskaya O.V., Demin N.V., Kozyreva M.V., Samarkina E.Y., Toroptsova N.V.</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://www.osteo-endojournals.ru/jour/article/view/13167">https://www.osteo-endojournals.ru/jour/article/view/13167</self-uri><abstract><sec><title>ОБОСНОВАНИЕ</title><p>ОБОСНОВАНИЕ. При ревматоидном артрите (РА) на состояние костной ткани могут влиять различные цитокины. Для формулирования клинически значимых выводов о роли цитокинов актуальны исследования, позволяющие сформировать большие массивы данных для дальнейших метаанализов.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Изучить связь минеральной плотности кости (МПК) с иммунологическими и гуморальными факторами у женщин в постменопаузе с РА.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. В исследование включены 73 женщины в постменопаузе с РА (медиана возраста 63,0 [56,0; 67,0] лет). Проведено клинико-лабораторное обследование, включавшее двухэнергетическую рентгеновскую денситометрию для оценки МПК поясничного отдела позвоночника (L1–L4), шейки бедра (ШБ) и проксимального отдела бедра (ПОБ) в целом, определение С-реактивного белка (СРБ), ревматоидного фактора (РФ), антител к циклическому цитруллинированному пептиду (АЦЦП), паратгормона (ПТГ), миостатина, фоллистатина, интерлейкина 6 (ИЛ-6), рецепторов к ИЛ-6, инсулиноподобного фактора роста 1, адипонектина, лептина, фактора роста фибробластов 23, фактора некроза опухоли (ФНО) SF12.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. При сравнительном анализе цитокинового профиля, в зависимости от наличия остеопороза, выявлены более высокие показатели адипонектина (р=0,002), ФНО SF12 (р=0,015) и рецепторов к ИЛ-6 (р=0,014). При корреляционном анализе значимые прямые корреляции между МПК всех областей измерения установлены с лептином и ИЛ-6; обратные ассоциации обнаружены между адипонектином и МПКL1–L4, фоллистатином и МПКШБ, ФНО SF12 и МПКПОБ. В линейном регрессионном анализе выявлены значимые связи между МПКL1–L4 с ПТГ (β=-0,22), адипонектином (β=-0,36) и лептином (β=0,35); МПКШБ с СРБ (β=-0,23), АЦЦП (β=-0,21), ПТГ (β=-0,35), ИЛ-6 (β=0,37) и лептином (β=0,32); МПКПОБ с СРБ (β=-0,22), АЦЦП (β=-0,24), ПТГ (β=-0,30), адипонектином (β=-0,28) и лептином (β=0,42).</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Проведенное исследование показало, что у женщин в постменопаузе с РА состояние костной ткани в различных отделах взаимосвязано с уровнем СРБ, АЦЦП, ПТГ, адипонектина, лептина и ИЛ-6.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>BACKGROUND</title><p>BACKGROUND: Different cytokines could affect bone tissue in patients with rheumatoid arthritis (RA). For formulation clinically significant conclusions about cytokines role in status of bone tissue in RA patients, actual studies are needed to obtain more data.</p></sec><sec><title>AIM</title><p>AIM: To study the association of bone mineral density (BMD) with immunological and humoral factors in postmenopausal RA women.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: The study included 73 postmenopausal women with RA (median age 63.0 [56.0; 67.0] years). A clinical and laboratory examination was performed including dual-energy X-ray absorptiometry to assess BMD of the lumbar spine (L1–L4), femoral neck (FN) and total hip (TH), level measurement of C-reactive protein (CRP), rheumatoid factor (RF), antibodies to cyclic citrullinated peptide (ACCP), parathyroid hormone (PTH), myostatin, follistatin, interleukin 6 (IL-6), IL-6 receptors, insulin-like growth factor 1, adiponectin, leptin, fibroblast growth factor 23, tumor necrosis factor (TNF) SF12.</p></sec><sec><title>RESULTS</title><p>RESULTS: Persons with osteoporosis (OP) have higher levels of adiponectin (p=0.002), TNF SF12 (p=0.015) and IL-6 receptors (p=0.014) compared to those without OP. L1–L4, FN and TH BMD positively correlated with leptin and IL-6; negative correlation was found between L1–L4 BMD and adiponectin, FN BMD and follistatin, TH BMD and TNF SF12 (p&lt;0.05). Linear regression analysis revealed significant associations between L1–L4 BMD and PTH (β= -0.22), adiponectin (β=-0.36) and leptin (β=0.35); FN BMD with CRP (β=-0.23), ACCP (β=-0.21), PTH (β=-0.35), IL-6 (β=0.37) and leptin (β=0.32); TH BMD with CRP (β=-0.22), AСCP (β=-0.24), PTH (β=-0.30), adiponectin (β=-0.28) and leptin (β=0.42).</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION: The conducted study showed that BMD in L1-L4, FN and TH is associated with the level of CRP, ACCP, PTH, adiponectin, leptin and IL-6 in postmenopausal women with RA.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>остеопороз</kwd><kwd>минеральная плотность кости</kwd><kwd>паратгормон</kwd><kwd>лептин</kwd><kwd>адипонектин</kwd><kwd>интерлейкин 6</kwd><kwd>цитокины</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>osteoporosis</kwd><kwd>bone mineral density</kwd><kwd>parathyroid hormone</kwd><kwd>leptin</kwd><kwd>adiponectin</kwd><kwd>interleukin 6</kwd><kwd>cytokines</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено в рамках фундаментальной научной темы (регистрационный номер 1021051403074-2).</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">Царенок С.Ю., Горбунов В.В., Аксенова Т.А. Взаимосвязь минеральной плотности костной ткани и показателей иммунного воспаления у женщин с остеопорозом в сочетании с ишемической болезнью сердца // Современная ревматология. — 2014. — №3. — С. 41–44. doi: https://doi.org/10.14412/1996-7012-2014-3-41-44</mixed-citation><mixed-citation xml:lang="en">Tsarenok S.Yu, Gorbunov VV, Aksenova TA. Relationship between bone mineral density and immune inflammatory parameters in women with osteoporosis concurrent with coronary heart diseases. Modern Rheumatology Journal. 2014;8(3):41-44. (In Russ.) doi: https://doi.org/10.14412/1996-7012-2014-3-41-44</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Царенок С.Ю., Горбунов В.В., Аксенова Т.А. Взаимосвязь артериальной ригидности, уровня цитокинов и минеральной плотности кости у женщин с постменопаузальным остеопорозом // Научно-практическая ревматология. — 2017. — Т. 55. — №6. — С. 637-640. doi: https://doi.org/10.14412/1995-4484-2017-637-640</mixed-citation><mixed-citation xml:lang="en">Tsarenok SYu, Gorbunov VV, Aksenova TA. А relationship between arterial stiffness, cytokine levels, and bone mineral density in women with postmenopausal osteoporosis. Rheumatology Science and Practice. 2017;55(6):637-640. (In Russ.) doi: https://doi.org/10.14412/1995-4484-2017-637-640</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Скрипникова И.А., Алиханова Н.А., Колчина М.А., и др. Минеральная плотность кости и состояние сосудистой стенки в зависимости от биохимических маркеров воспаления у женщин в постменопаузе // Научно-практическая ревматология. 2020;58(3):276-280. doi: https://doi.org/10.14412/1995-4484-2020-276-280</mixed-citation><mixed-citation xml:lang="en">Skripnikova IA, Alikhanova NA, Kolchina MA, et al. Relationship of bone mineral density and vascular wall condition with biochemical markers of inflammation in postmenopausal women. Rheumatology Science and Practice. 2020;58(3):276-280. (In Russ.) doi: https://doi.org/10.14412/1995-4484-2020-276-280</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Ko DS, Kim YH, Goh TS, Lee JS. Altered physiology of mesenchymal stem cells in the pathogenesis of adolescent idiopathic scoliosis. World J Clin Cases. 2020;8(11):2102-2110. doi: https://doi.org/10.12998/wjcc.v8.i11.2102</mixed-citation><mixed-citation xml:lang="en">Ko DS, Kim YH, Goh TS, Lee JS. Altered physiology of mesenchymal stem cells in the pathogenesis of adolescent idiopathic scoliosis. World J Clin Cases. 2020;8(11):2102-2110. doi: https://doi.org/10.12998/wjcc.v8.i11.2102</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Mangion D, Pace NP, Formosa MM. The relationship between adipokine levels and bone mass-A systematic review. Endocrinol Diabetes Metab. 2023;6(3):e408. doi: https://doi.org/10.1002/edm2.408</mixed-citation><mixed-citation xml:lang="en">Mangion D, Pace NP, Formosa MM. The relationship between adipokine levels and bone mass-A systematic review. Endocrinol Diabetes Metab. 2023;6(3):e408. doi: https://doi.org/10.1002/edm2.408</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Dankbar B, Fennen M, Brunert D, et al. Myostatin is a direct regulator of osteoclast differentiation and its inhibition reduces inflammatory joint destruction in mice. Nat Med. 2015;21(9):1085-1090. doi: https://doi.org/10.1038/nm.3917</mixed-citation><mixed-citation xml:lang="en">Dankbar B, Fennen M, Brunert D, et al. Myostatin is a direct regulator of osteoclast differentiation and its inhibition reduces inflammatory joint destruction in mice. Nat Med. 2015;21(9):1085-1090. doi: https://doi.org/10.1038/nm.3917</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Kota S, Jammula S, Kota S, Meher L, Modi K. Correlation of vitamin D, bone mineral density and parathyroid hormone levels in adults with low bone density. Indian J Orthop. 2013;47(4):402-407. doi: https://doi.org/10.4103/0019-5413.114932</mixed-citation><mixed-citation xml:lang="en">Kota S, Jammula S, Kota S, Meher L, Modi K. Correlation of vitamin D, bone mineral density and parathyroid hormone levels in adults with low bone density. Indian J Orthop. 2013;47(4):402-407. doi: https://doi.org/10.4103/0019-5413.114932</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Tan LM, Long TT, Guan XL, et al. Diagnostic Value of Vitamin D Status and Bone Turnover Markers in Rheumatoid Arthritis Complicated by Osteoporosis. Ann Clin Lab Sci. 2018;48(2):197-204</mixed-citation><mixed-citation xml:lang="en">Tan LM, Long TT, Guan XL, et al. Diagnostic Value of Vitamin D Status and Bone Turnover Markers in Rheumatoid Arthritis Complicated by Osteoporosis. Ann Clin Lab Sci. 2018;48(2):197-204</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Hauser B, Harre U. The role of autoantibodies in bone metabolism and bone loss. Calcif Tissue Int. 2018;102(5):522-532. doi: https://doi.org/10.1007/s00223-017-0370-4</mixed-citation><mixed-citation xml:lang="en">Hauser B, Harre U. The role of autoantibodies in bone metabolism and bone loss. Calcif Tissue Int. 2018;102(5):522-532. doi: https://doi.org/10.1007/s00223-017-0370-4</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Ketabforoush AHME, Aleahmad M, Qorbani M, et al. Bone mineral density status in patients with recent-onset rheumatoid arthritis. J Diabetes Metab Disord. 2023;22(1):775-785. doi: https://doi.org/10.1007/s40200-023-01200-w</mixed-citation><mixed-citation xml:lang="en">Ketabforoush AHME, Aleahmad M, Qorbani M, et al. Bone mineral density status in patients with recent-onset rheumatoid arthritis. J Diabetes Metab Disord. 2023;22(1):775-785. doi: https://doi.org/10.1007/s40200-023-01200-w</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Berglundh S, Malmgren L, Luthman H, et al. C-reactive protein, bone loss, fracture, and mortality in elderly women: a longitudinal study in the OPRA cohort. Osteoporos Int. 2015;26(2):727-35. doi: https://doi.org/10.1007/s00198-014-2951-7</mixed-citation><mixed-citation xml:lang="en">Berglundh S, Malmgren L, Luthman H, et al. C-reactive protein, bone loss, fracture, and mortality in elderly women: a longitudinal study in the OPRA cohort. Osteoporos Int. 2015;26(2):727-35. doi: https://doi.org/10.1007/s00198-014-2951-7</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Угай Л.Г., Невзорова В.А., Кочеткова Е.А., Майстровская Ю.В., Шмыков А.В. Состояние адипокиновой регуляции и эндотелиальной дисфункции у пациентов с хронической обструктивной болезнью легких c различной минеральной плотностью костной ткани // Пульмонология. — 2015. — Т. 25. — №5. — С. 517-523. doi: https://doi.org/10.18093/0869-0189-2015-25-5-517-523</mixed-citation><mixed-citation xml:lang="en">Ugay LG, Nevzorova VA, Kochetkova EA, Maystrovskaya YuV, Shmykov AV. Аdipokine regulation and endothelial dysfunction in patients with chronic obstructive pulmonary disease and different bone mineral density. Pulmonologiya. 2015;25(5):517-523. (In Russ.). doi: https://doi.org/10.18093/0869-0189-2015-25-5-517-523</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Птичкина П.А., Скрипникова И.А., Новиков В.Е. и др. Композитный состав тела, костная масса и адипокины у женщин в постменопаузе с разным кардиоваскулярным риском (SCORE) // Остеопороз и остеопатии. — 2012. — Т. 15. — №1. — С. 3-6. doi: https://doi.org/10.14341/osteo201213-6</mixed-citation><mixed-citation xml:lang="en">Ptichkina PA, Skripnikova IA, Novikov VE, et al. Body composition, bone mass and adipokines in postmenopausal women with different cardiovascular risk (SCORE). Osteoporosis and Bone Diseases. 2012;15(1):3-6. (In Russ.). doi: https://doi.org/10.14341/osteo201213-6</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Gong X, Tang Y, Yu SS, et al. Elevated serum leptin may be associated with disease activity and secondary osteoporosis in Chinese patients with rheumatoid arthritis. Clin Rheumatol. 2023;42(12):3333-3340. doi: https://doi.org/10.1007/s10067-023-06725-2</mixed-citation><mixed-citation xml:lang="en">Gong X, Tang Y, Yu SS, et al. Elevated serum leptin may be associated with disease activity and secondary osteoporosis in Chinese patients with rheumatoid arthritis. Clin Rheumatol. 2023;42(12):3333-3340. doi: https://doi.org/10.1007/s10067-023-06725-2</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Anastasilakis AD, Polyzos SA, Rodopaios NE, et al. Activins, follistatins and inhibins in postmenopausal osteoporosis: A proof of concept, case-control study. Metabolism. 2023;141:155397. doi: https://doi.org/10.1016/j.metabol.2022.155397</mixed-citation><mixed-citation xml:lang="en">Anastasilakis AD, Polyzos SA, Rodopaios NE, et al. Activins, follistatins and inhibins in postmenopausal osteoporosis: A proof of concept, case-control study. Metabolism. 2023;141:155397. doi: https://doi.org/10.1016/j.metabol.2022.155397</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Qiu J, Lu C, Zhang L, Zhou X, Zou H. Osteoporosis in patients with rheumatoid arthritis is associated with serum immune regulatory cellular factors. Clin Rheumatol. 2022;41(9):2685-2693. doi: https://doi.org/10.1007/s10067-022-06212-0</mixed-citation><mixed-citation xml:lang="en">Qiu J, Lu C, Zhang L, Zhou X, Zou H. Osteoporosis in patients with rheumatoid arthritis is associated with serum immune regulatory cellular factors. Clin Rheumatol. 2022;41(9):2685-2693. doi: https://doi.org/10.1007/s10067-022-06212-0</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Moritani Y, Hasegawa T, Yamamoto T, et al. Histochemical assessment of accelerated bone remodeling and reduced mineralization in Il-6 deficient mice. J Oral Biosci. 2022;64(4):410-421. doi: https://doi.org/10.1016/j.job.2022.10.001</mixed-citation><mixed-citation xml:lang="en">Moritani Y, Hasegawa T, Yamamoto T, et al. Histochemical assessment of accelerated bone remodeling and reduced mineralization in Il-6 deficient mice. J Oral Biosci. 2022;64(4):410-421. doi: https://doi.org/10.1016/j.job.2022.10.001</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Huang Z, Xu Z, Wan R, Hu D, Huang Y. Associations between blood inflammatory markers and bone mineral density and strength in the femoral neck: findings from the MIDUS II study. Sci Rep. 2023;13(1):10662 doi: https://doi.org/10.1038/s41598-023-37377-6</mixed-citation><mixed-citation xml:lang="en">Huang Z, Xu Z, Wan R, Hu D, Huang Y. Associations between blood inflammatory markers and bone mineral density and strength in the femoral neck: findings from the MIDUS II study. Sci Rep. 2023;13(1):10662 doi: https://doi.org/10.1038/s41598-023-37377-6</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
