Abstracts tagged "osteoclast"

Abstract Number: 2592 • ACR Convergence 2025
Romosozumab and Denosumab Combination Therapy in Postmenopausal Osteoporosis
Giovanni Adami¹, Francesco Pollastri², Angelo Fassio², Camilla Benini², Davide Gatti², Ombretta Viapiana² and Maurizio Rossini², ¹University of Verona, Italy, Verona, Italy, ²University of Verona, Verona, Italy
Background/Purpose: Transition from long-term denosumab to PTH-analogs or romosozumab might expose patients to the risk of the so-called rebound phenomenon. Adding romosozumab to denosumab might…
Abstract Number: 2117 • ACR Convergence 2025
Denosumab Discontinuation and Switching in Glucocorticoid-Induced Osteoporosis: A Multi-site Randomized Clinical Trial
Giovanni Adami¹, Kenneth Saag², Gary Cutter³, Rahima Begum³, Elizabeth Dye⁴, Phillip Foster⁵, Camilla Benini⁶, Carmela Dartizio⁶, Davide Gatti⁶ and Maria I. ("Maio") Danila⁷, ¹University of Verona, Italy, Verona, Italy, ²The University of Alabama at Birmingham, Birmingham, AL, ³University of Alabama at Birmingham, Birmingham, ⁴UAB, Birmingham, AL, ⁵University of Alabama at Birmingham, Birmingham, AL, ⁶University of Verona, Verona, Italy, ⁷University of Alabama at Birmingham (UAB), Birmingham VA Medical Center, Birmingham, AL
Background/Purpose: Prompt anti-resorptive treatment with bisphosphonates after denosumab discontinuation is generally recommended. Glucocorticoid users may not require longer term denosumab and are at greater fracture…
Abstract Number: 2116 • ACR Convergence 2025
Romosozumab in Multiple Myeloma Patients at High Risk of Fracture
Giovanni Adami¹, Mariana Diz Lopes², Martina Tinelli², Angela Bonalumi², Ombretta Viapiana² and Maurizio Rossini², ¹University of Verona, Italy, Verona, Italy, ²University of Verona, Verona, Italy
Background/Purpose: Bone damage is a key feature of multiple myeloma (MM). Romosozumab (ROMO), a sclerostin inhibitor, has dual anabolic and antiresorptive properties and may offer…
Abstract Number: 1142 • ACR Convergence 2025
Tibial Bone Microstructure and Histomorphometry in Individuals with CPPD
Sara Tedeschi¹, Priyanka Kushwaha², Muneet Gill², Julia F. Charles³ and Ellen M. Gravallese⁴, ¹Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA, ²Division of Rheumatology, Inflammation and Immunity, Brigham and Women’s Hospital, Boston, MA, ³Department of Orthopedic Surgery & Division of Rheumatology, Inflammation and Immunity, Brigham and Women’s Hospital, Boston, MA, ⁴Brigham and Women's Hospital, Harvard Medical School, Chestnut Hill, MA
Background/Purpose: CPPD has been associated with osteopenia of the metacarpal heads and a 2x increased risk for fracture of the wrist, hip, humerus or pelvis.…
Abstract Number: 0020 • ACR Convergence 2024
CD14 Deficiency Protects Against TLR4/LPS-mediated Inhibition of Osteoclastogenesis
Lance Murphy¹, Kevin Burt², Vu Nguyen³, Baofeng Hu², Robert Mauck³ and Carla Scanzello², ¹University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, ²University of Pennsylvania, Philadelphia, PA, ³University of Pennsylvania, Philadelphia
Background/Purpose: Osteoarthritis is associated with bone changes such as subchondral sclerosis, bone marrow lesions, and osteophyte formation (Donel S, 2019). Prior work has demonstrated that…
Abstract Number: 0041 • ACR Convergence 2024
Disease Activity and Serological Inflammatory Markers Are Associated with TNF-a and IL-6-Induced Osteoclasts, but Not with RANKL-Induced Osteoclasts in Peripheral Blood Monocytes from Patients with Rheumatoid Arthritis
Yokota Kazuhiro¹, Yoshimi Aizaki¹, Miyoko Sekikawa², Hiroshi Kajiyama¹, Yasuto Araki¹, Yuho Kadono², Yuji Akiyama¹ and Toshihide Mimura¹, ¹Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan, Iruma-gun, Saitama, Japan, ²Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan, Iruma-gun, Saitama, Japan
Background/Purpose: We previously reported that a combination of TNF-α and IL-6 induces mouse osteoclast (OC)-like cells and human OCs with bone resorption activity [Arthritis &…
Abstract Number: 0759 • ACR Convergence 2024
Macrophage-Lineage Cells in Giant Cell Arteritis Express MMP12, Phagocytosis and Osteoclast-associated Molecules That May Contribute to Destruction of the Tunica Media
Makoto Sugihara¹, Nobumasa Watanabe², Yuichiro Hara², Yasumasa Nishito³, Mai Kounoe⁴, Kazunari Sekiyama⁴, Eisuke Takamasu⁵, Naofumi Chinen⁶, Kota Shimada⁵ and Hideya Kawaji², ¹Department of Rheumatic Diseases, Tokyo Metropolitan Tama-Hokubu Medical Center, Tokyo, Japan, Higashimurayama-shi, Tokyo, Japan, ²Research Center for Genome & Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ³Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ⁴Center for Medical Research Cooperation, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ⁵Department of Rheumatic Diseases, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan, Fuchu-shi, Tokyo, Japan, ⁶Department of Rheumatic Diseases, Tokyo Metropolitan Tama-Nambu Chiiki Hospital, Tokyo, Japan, Tama-shi, Tokyo, Japan
Background/Purpose: Giant cell arteritis (GCA) is a large vessel vasculitis characterized by inflammatory cell infiltration and destruction of the tunica media. In this study, we…
Abstract Number: 2131 • ACR Convergence 2024
Role of LECT2 in the Regulation of Bone Metabolism In Vitro and In Vivo
Myeung-Su Lee¹, Chang-hoon Lee², CHONG HYUK CHUNG¹, Ju-Young Kim³, Yoon-Hee Cheon⁴, So Young Eun³ and Gyeung Do Park³, ¹Wonkwang University Hospital, Iksan, South Korea, ²Wonkwang University Hospital, Iksan Jeonbuk, South Korea, ³Musculoskeletal and Immune Disease Research Institute, School of Medicine, Wonkwang University, Iksan, Republic of Korea, ⁴Musculoskeletal and Immune Disease Research Institute, School of Medicine, Wonkwang University, Iksan, Cholla-bukto, Republic of Korea
Background/Purpose: Leucocyte cell derived chemotaxin 2 (LECT2) is a hepatokine produced in liver cells, secreted into the circulation, and acts as a hormone throughout the…
Abstract Number: 2567 • ACR Convergence 2024
Gene Expression in Osteonecrosis of the Femoral Head: A Region-matched RNA-sequencing Study
Lucy Eunju Lee¹, Seung Hwan Lee², Miri Kim², Jieun Kim², Joo Sung Shim², Eun Gyel Shin², Tae Sung Lee², Hyuck Min Kwon², Young Han Lee², Hun-Mu Yang², Kwan Kyu Park² and Jason Jungsik Song², ¹Yonsei University, Seoul, South Korea, ²Yonsei University College of Medicine, Seoul, Republic of Korea
Background/Purpose: Osteonecrosis of the femoral head (ONFH) is linked to diverse risk factors like glucocorticoid use and excessive alcohol consumption. Various cells may influence bone…
Abstract Number: 1719 • ACR Convergence 2023
Exploring the Link Between Osteitis and Bone Microstructure Changes in Rheumatoid Arthritis: Role of JAK-STAT Signaling Pathway
Tsuneyasu Yoshida¹, Yoichi Nakayama¹, Masao Katsushima², Yuri Nishida³, Mirei Shirakashi¹, Ran Nakashima¹, Ryu Watanabe², Kosaku Murakami⁴, Hajime Yoshifuji¹, Akio Morinobu¹ and Motomu Hashimoto², ¹Department of Rheumatology and Clinical Immunology, Graduate School of Medicine, Kyoto University, Kyoto, Japan, ²Department of Clinical Immunology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan, ³Department of Endocrinology and Rheumatology, Kurashiki Central Hospital, Kurashiki, Japan, ⁴Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
Background/Purpose: Osteitis on MRI and bone microstructure changes (BMC) on high-resolution peripheral quantitative CT are the earliest signs of arthritis, preceding the development of bone…
Abstract Number: 2014 • ACR Convergence 2023
The Role of Orosomucoid 2 in the Regulation of Bone Remodeling by Inhibiting Osteoclastogenesis and Promoting Osteogenesis
CHONG HYUK CHUNG¹, Myeung-Su Lee¹ and Chang-hoon Lee², ¹Wonkwang University Hospital, Iksan, South Korea, ²Wonkwang University Hospital, Iksan Jeonbuk, South Korea
Background/Purpose: Orosomucoid (ORM) is one of the acute phase reactant protein family and is expressed in hepatocytes and secreted into plasma under stress conditions such…
Abstract Number: 0588 • ACR Convergence 2022
S-nitrosoglutathione Reductase (GSNOR) Regulates Osteoclast Differentiation
Toshihiro Tanioka¹, Kohei Maeda¹, Rei Takahashi¹ and Takeo Isozaki², ¹Division of Pathogenesis and Translational Medicine, Department of Clinical Pharmacy, Showa University School of Pharmacy, Tokyo, Japan, ²Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
Background/Purpose: S-nitrosoglutathione (GSNO) reductase (GSNOR) is an enzyme which decomposes GSNO and downregulates protein S-nitrosylation. It has been reported that GSNOR KO mice have enhanced…
Abstract Number: 0604 • ACR Convergence 2022
Altered Metabolic State in Myeloid Precursors and Mature Cells Within Rheumatoid Arthritis
Patricia Riedlova¹, Luís Almeida², Cecilia Ansalone³, Shatakshi Sood¹, Bart Everts² and Carl Goodyear¹, ¹University of Glasgow, Glasgow, Scotland, United Kingdom, ²Leiden University Medical Center, Leiden, Netherlands, ³UCSD and University of Glasgow, Glasgow, Scotland, United Kingdom
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterised by synovial inflammation and joint destruction. Prior research has revealed perturbation in the myeloid compartment of…
Abstract Number: 0030 • ACR Convergence 2021
Interleukin-9 Enhances the Osteoclastogenesis in Rheumatoid Arthritis
Santanu Kar¹, Dipendra Mitra², Vijay Kumar D¹ and Sushmita Chakraborty¹, ¹AIIMS, New Delhi, India, ²ALL INDIAN INSTITUTE OF MEDICAL SCIENCES, New Delhi, India
Background/Purpose: Rheumatoid Arthritis (RA) is a chronic inflammatory disease characterized by synovial inflammation leading to bone destruction. Bone erosion in RA results from excessive resorption…
Abstract Number: 0044 • ACR Convergence 2021
Autoantibodies Against Malondialdehyde-modifications Promote Osteoclast Development by Reprogramming Cellular Metabolism
Koji Sakuraba¹, Akilan Krishnamurthy¹, Alexandra Circiumaru², Jitong Sun¹, Vijay Joshua¹, Heidi Wähämaa¹, Marianne Engström¹, Meng Sun¹, Xiaowei Zheng¹, Cheng Xu¹, khaled amara¹, Vivianne Malmström¹, Sergiu Catrina¹, Caroline Grönwall¹, Anca Catrina¹ and Bence Réthi¹, ¹Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden, ²Division for Rheumatology, Karolinska Institutet; Center for Rheumatology, Academic Specialist Center, Stockholm Region, Stockholm, Sweden
Background/Purpose: Malondialdehyde (MDA) is a highly reactive compound generated during lipid-peroxidation in conditions associated with oxidative stress. MDA can irreversibly modify proteins (e.g. lysine, arginine…

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