Abstracts tagged "osteoclasts"

Abstract Number: 984 • 2019 ACR/ARP Annual Meeting
Important Role of CD11c+ Cells in Inflammatory Arthritis
Antonia Puchner¹, Elisabeth Simader ¹, Victoria Saferding ², Gerhard Kroenke ³, Rene Pfeifle ⁴, Daniel Aletaha ¹, Josef Smolen ¹ and Stephan Blueml ¹, ¹Medical University of Vienna, Vienna, Austria, ²Division of Rheumatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria, ³Department of Internal Medicine 3, Friedrich-Alexander-University Erlangen-Nuremberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Austria, ⁴University Hospital Erlangen, Erlangen, Germany
Background/Purpose: Dendritic cells (DCs) are important antigen presenting cells (APCs) and therefore they play an important role in bridging the innate and the adaptive immune…
Abstract Number: 1012 • 2019 ACR/ARP Annual Meeting
Apremilast Inhibits Immune Cells Support of Inflammatory Osteoclastogenesis
Yannick Degboe ¹, Flavia Sunzini ¹, Iain McInnes ² and Carl Goodyear¹, ¹University of Glasgow, Glasgow, United Kingdom, ²Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, United Kingdom
Background/Purpose: PsA is associated with bone erosion and inflammation-induced bone loss. This process is mediated by osteoclasts, and modulated by inflammatory cytokines (i.e. TNF, IL-1,…
Abstract Number: 1969 • 2019 ACR/ARP Annual Meeting
FOXO1 Is Required for Human Osteoclast Differentiation
Sabarinadh Chilaka ¹, Yannick Degboe ¹, Iain McInnes ² and Carl Goodyear³, ¹Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom., Glasgow, Scotland, United Kingdom, ²Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, United Kingdom, ³University of Glasgow, Glasgow, United Kingdom
Background/Purpose: Dysregulation of osteoclast differentiation and function is a feature of inflammatory arthropathies (IA). Multiple genes and signalling pathways have been associated with regulation of…
Abstract Number: 1989 • 2019 ACR/ARP Annual Meeting
Netrin-1 and Its Receptor Unc5B Mediates Tenofovir Induced Bone Loss and Dipyridamole, an Agent That Blocks Adenosine Transporter, Is Able to Modulate the Signal
Aranzazu Mediero¹, Patricia Llamas-Granda ², Bruce Cronstein ³, Raquel Largo ⁴ and Gabriel Herrero-Beaumont ⁴, ¹IIS-FUNDACION JIMENEZ DIAZ, Madrid, Spain, ²IIS-FUNDACION JIMENEX DIAZ, Madrid, Spain, ³Department of Medicine, Division of Rheumatology NYUSoM, NYC, ⁴IIS-Fundación Jiménez Díaz, Madrid, Madrid, Spain
Background/Purpose: Osteopenia and fragility fractures have been associated with HIV infection. Tenofovir, a common antiviral in HIV treatment, also leads to increases in bone catabolism…
Abstract Number: 2003 • 2019 ACR/ARP Annual Meeting
Anti-Polygalacturonic Acid Antibody (PGA-Ab) Induced Bone Destruction in Rheumatoid Arthritis by Promoting Osteoclastogenesis via Integrin Beta 5
JIAWEI XIE¹ and HUI DAI ¹, ¹Peking University, Beijing, China (People's Republic)
Background/Purpose: Anti-polygalacturonic acid antibody (PGA-Ab) is a new rheumatoid arthritis (RA)-related autoantibody first identified by our group. The sensitivity and specificity of PGA-Ab is even…
Abstract Number: 1052 • 2018 ACR/ARHP Annual Meeting
Detection of Precursors of RANK- Osteoclast-like Cells (Olcs) in Peripheral Blood and Olcs in Bone Tissue from Rheumatoid Arthritis Patients
Kazuhiro Yokota¹, Shinya Tanaka², Miyoko Sekikawa², Yoshimi Aizaki¹, Kojiro Sato¹, Hiromi Oda² and Toshihide Mimura¹, ¹Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan, ²Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan
Background/Purpose: Proinflammatory cytokines play an important role in bone destruction in rheumatoid arthritis (RA), as inferred by the efficacy of biologics. Previously, we reported that…
Abstract Number: 1435 • 2017 ACR/ARHP Annual Meeting
Consistent Inhibition of Joint Destruction By Denosumab in Important Subgroups of Japanese Patients with Rheumatoid Arthritis: Pooled Analysis of Phase 2 and 3 Studies
Yoshiya Tanaka¹, Tsutomu Takeuchi², Satoshi Soen³, Naoki Ishiguro⁴, Hisashi Yamanaka⁵, Toshiyuki Yoneda⁶, Sakae Tanaka⁷, Takaya Nitta⁸, Naoki Okubo⁹, Harry K. Genant¹⁰ and Désirée van der Heijde¹¹, ¹University of Occupational and Environmental Health, Kitakyushu, Japan, ²Keio University School of Medicine, Tokyo, Japan, ³Kindai University Nara Hospital, Ikoma, Japan, ⁴Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan, ⁵Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan, ⁶Indiana University School of Medicine, Indianapolis, IN, ⁷Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Japan, ⁸Daiichi Sankyo Co., Ltd., Tokyo, Japan, ⁹DaiichiSankyo CO., LTD., Tokyo, Japan, ¹⁰University of California, San Francisco, CA, ¹¹Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Denosumab is a fully human monoclonal antibody (IgG2 subclass) that inhibits bone resorption by blocking RANKL. Phase 2 (DRIVE) and phase 3 (DESIRABLE) studies…
Abstract Number: 1942 • 2017 ACR/ARHP Annual Meeting
CTLA4-Ig Directly Inhibits Osteoclast Generation from Human Peripheral Monocytes and Tumor Necrosis Factor α-Treated Inflammatory Monocytes
Katsuhiro Oi¹, Tadahiro Tokunaga¹, Tatsuomi Kuranobu¹, Yusuke Yoshida², Shintaro Hirata¹, Takaki Nojima³ and Eiji Sugiyama², ¹Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima, Japan, ²Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima, Japan, ³Clinical Immunology and Rheumatolog, Graduate School of Medicine, Kyoto University, Kyoto, Japan
Background/Purpose: CTLA-4 is a surface protein on T lymphocytes, which negatively regulates the co-stimulation process between antigen-presenting cells and T cells. CTLA-4 binds to monocytes…
Abstract Number: 366 • 2016 ACR/ARHP Annual Meeting
Peripheral Osteoclastogensis Is Coming Back Along with Inflammation Twelve Months after Rituximab Therapy
Mie Jin Lim¹, Won Park², Seong-Ryul Kwon³ and Kyong-Hee Jung⁴, ¹Division of Rheumatology, Departments of Internal Medicine, Inha University Hospital, Incheion, South Korea, ²Medicine/Rheumatology, IN-HA University Hospital, Choong-Gu Incheon, Korea, Republic of, ³Center for Rheumatism, Inha University Hospital, Incheon, South Korea, ⁴Hospital for Rheumatic Disease, Hanyang Univ Medical Center, Seoul, South Korea
Background/Purpose: We investigated change of bone turnover markers in peripheral blood before, 6 and 12 months after rituximab therapy in seropositive RA patients. Methods: Ten…
Abstract Number: 3097 • 2016 ACR/ARHP Annual Meeting
Osteoclast Precursor Frequency and Imaging Findings Associated with Arthritis Onset in a Psoriasis Longitudinal Cohort
Ralf G. Thiele¹, Yahui Grace Chiu², Francisco Tausk³, Bethany A. Marston⁴, Changyong Feng⁵, Gregory Dieudonne⁶, Vaseem Chengazi⁶, Sharon Moorehead⁷, Debbie Campbell⁷ and Christopher T. Ritchlin⁸, ¹Medicine, University of Rochester Medical Center, Rochester, NY, ²Allergy, Immunology, and Rheumatology, University of Rochester Medical Center, Rochester, NY, ³Dermatology, University of Rochester, Rochester, NY, ⁴Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, ⁵Statistics, University of Rochester, Rochester, NY, ⁶Radiology, University of Rochester, Rochester, NY, ⁷Allergy, Immunology & Rheumatology, University of Rochester, Rochester, NY, ⁸Allergy Immunology & Rheumatology, University of Rochester Medical Center, Rochester, NY
Background/Purpose: Psoriasis (Ps) precedes joint inflammation by an average of 10 years psoriatic arthritis (PsA) patients. Reports have demonstrated abnormal musculoskeletal imaging findings in psoriasis…
Abstract Number: 329 • 2016 ACR/ARHP Annual Meeting
Explore the Possible Mechanisms of 1,25(OH)2D3 on the Formation of Osteoclasts in Rheumatoid Arthritis
Hong-yan WEN¹, Dan-dan LIU², Dan-dan WEI², Fang-fang ZHAO² and Xiao-feng LI², ¹Rheumatology, Shanxi Medical University, The Second Hospital of Shanxi Medical University, Taiyuan, China, ²Shanxi Medical University, The Second Hospital of Shanxi Medical University, Taiyuan, China
Background/Purpose: In our previous study, several conclusions are reached like: (1) IL-22 can promote inflammation and osteoclast formation in the process of RA;(2) 1,25(OH)2D3 decreases serum IL-22 level in RA patients, and acts as a…
Abstract Number: 1737 • 2015 ACR/ARHP Annual Meeting
Increased Osteoclast Precursors with an Elevated DC-STAMP Expression May Identify Psoriasis Patients at Risk for Psoriatic Arthritis
Yahui Grace Chiu¹, Sutha Shanmugarajah², Dongge Li³, Megan Freiburger⁴, Sharon Moorehead⁵, Dafna Gladman⁶ and Christopher T. Ritchlin⁷, ¹Allergy, Immunology, and Rheumatology, University of Rochester, Rochester, NY, ²Toronto Western Hospital, Toronto, ON, Canada, ³Allergy, Immunology and Rheumatology, University of Rochester, Rochester, NY, ⁴Biology, University of Rochester, Rochester, NY, ⁵Allergy, Immunology & Rheumatology, University of Rochester, Rochester, NY, ⁶Allergy, Immunology & Rheumatology, Toronto Western Hospital, Toronto, ON, Canada, ⁷Allergy, Immunology and Rheumatololgy Division, University of Rochester Medical Center, Rochester, NY
Background/Purpose: Approximately 25% of psoriasis (Ps) patients develop into psoriatic arthritis (PsA) within 10 years. This Ps-to-PsA transition paradigm provides a unique opportunity to recognize…
Abstract Number: 2569 • 2015 ACR/ARHP Annual Meeting
Regulation of SIRT1 Maybe a Perfect Strategy in Treatment of Rheumatoid Arthritis
Sang-Yeob Lee¹, Sung Won Lee², Won Tae Chung², Jae Ho Bae³, So Youn Park⁴ and Chi Dae Kim⁴, ¹Division of Rheumatology, Department of Internal Medicine, Dong-A University College of Medicine, Busan, South Korea, ²Rheumatology, Dong-A University Hospital, Busan, South Korea, ³Biochemistry, Pusan national university, Yong -San, South Korea, ⁴Medical Research Center for Ischemic Tissue Regeneration, Pusan national university, Yong -San, South Korea
Background/Purpose: Monocyte may differentiate to osteoclasts in bone and macrophages in joint. so, blocking of monocyte differentiation maybe effective target in RA (rheumatoid arthritis) treatment.…
Abstract Number: 2340 • 2014 ACR/ARHP Annual Meeting
Human Osteoclasts Are Mobilized in Erosive Arthritis of Epstein-Barr Virus-Infected Humanized NOD/Shi-Scid/IL-2Rγ^null Mice
Yosuke Nagasawa¹, Natsumi Ikumi², Takamasa Nozaki¹, Hirotake Inomata¹, Kenichi Imadome³, Noboru Kitamura¹, Mitsuhiro Iwata¹, Shigeyoshi Fujiwara⁴ and Masami Takei¹, ¹Division of Hematology and Rheumatology, Nihon University School of Medicine, Tokyo, Japan, ²Division of Heamatology and Rheumatology, Nihon University School of Medicine, Tokyo, Japan, ³Department of Infectious Diseases, National Research Institute for Child Health and Development, Tokyo, Japan, ⁴Department of Iinfectious Diseases, National Research Institute for Child Health and Development, Tokyo, Japan
Background/Purpose Various studies of the relationship between Epstein-Barr virus (EBV) and rheumatoid arthritis (RA) have not produced convincing evidence. Many human viruses do not infect…
Abstract Number: 1915 • 2014 ACR/ARHP Annual Meeting
IL-17 Gene Transfer induces Myeloid Precursor Cells That Initiate Epidermal Hyperplasia Independently of IL-23R⁺/CD4⁺ and γδ T Cells
Erika Suzuki¹, Ritu Sarin², Emanual Maverakis¹ and Iannis E. Adamopoulos², ¹University of California at Davis, Sacramento, CA, ²Internal Medicine, University of California at Davis, Sacramento, CA
Background/Purpose: IL-17 is elevated in both the lesional skin and arthritic joints of psoriatic arthritis (PsA) patients. Although the IL-23/IL-17 axis has been linked with…

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