Abstracts tagged "osteoclasts"

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…
Abstract Number: 1890 • 2014 ACR/ARHP Annual Meeting
Consistent Inhibition of Bone Destruction By Denosumab in Important Subgroups of Japanese Patients with Rheumatoid Arthritis
Naoki Ishiguro¹, Yoshiya Tanaka², Hisashi Yamanaka³, Toshiyuki Yoneda⁴, Takeshi Ohira⁵, Naoki Okubo⁶, Harry K. Genant⁷, Desiree van der Heijde⁸ and Tsutomu Takeuchi⁹, ¹Orthopaedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, Nagoya, Japan, ²University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ³Institute of Rheumatology, Tokyo Women’s Medical University, Tokyo, Japan, ⁴Indiana University School of Medicine, Indianapolis, IN, ⁵Daiich Sankyo Co. Ltd, Tokyo, Japan, ⁶1-2-58, Hiromachi, Daiichi Sankyo Co. Ltd, Tokyo, Japan, ⁷University of California, San Francisco, CCBR-Synarc, Newark, Tiburon, CA, ⁸Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁹Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
Background/Purpose Denosumab is a fully human monoclonal antibody (IgG2 subclass) that binds specifically to RANKL, inhibits osteoclast-induced bone resorption by preventing the binding of RANKL…
Abstract Number: 38 • 2014 ACR/ARHP Annual Meeting
Angiopoietin-like 4 Is over-Expressed in Rheumatoid Arthritis: A Potential Role in Pathological Bone Resorption
Catherine Swales¹, Nick Athanasou² and Helen Knowles³, ¹Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, The Botnar Research Centre, Oxford, United Kingdom, ²Nuffield Orthopaedic Centre, Department of Pathology, Oxford, United Kingdom, ³Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Oxford, United Kingdom
Background/Purpose In contrast to normal synovial tissue, rheumatoid synovium is hypoxic, and expresses the hypoxia-inducible transcription factors HIF-1α and HIF-2α which allow the transcription of…
Abstract Number: 2730 • 2013 ACR/ARHP Annual Meeting
Netrin1 Is a Critical Autocrine Factor For Osteoclast Differentiation
Aranzazu Mediero¹, Bhama Ramkhelawon², Kathryn Moore², P. Edward Purdue³, Steven R. Goldring⁴ and Bruce N. Cronstein⁵, ¹Medicine, Division of Translational Medicine, NYU School of Medicine, New York, NY, ²Leon H. Charney Division of Cardiology, Department of Medicine,, NYU School of Medicine, New York, NY, ³Research, Hospital for Special Surgery, New York, NY, ⁴Hospital for Special Surgery, New York, NY, ⁵Internal Medicine, NYU School of Medicine, Division of Rheumatology, New York, NY
Background/Purpose: Netrins have been extensively studied for their role in axonal guidance during neural development. In addition, netrins are chemopulsants for a variety of non-neuronal…
Abstract Number: 2236 • 2013 ACR/ARHP Annual Meeting
Articular Inflammation Is Protected By Fat-1 During The Acute Phase Of Arthritis In Mice
Sang-Il Lee¹, Yun-Hong Cheon², Ji-Min Kim³ and Won Seok Lee², ¹Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, South Korea, ²Rheumatology, Department of Internal Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine, Jeonju, South Korea, ³Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, South Korea
Background/Purpose: Omega-3 polyunsaturated fatty acids (n-3 PUFA) are well known to exert anti-inflammatory effects. The Fat-1 transgenic (Fat-1 TG) mice are capable of producing n-3…
Abstract Number: 1833 • 2013 ACR/ARHP Annual Meeting
Combination Of TNF and IL-6 Induces Osteoclast-Like Cells With Bone-Resorption Activity Both In Vitro and In Vivo
Kazuhiro Yokota, Kojiro Sato and Toshihide Mimura, Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
Background/Purpose: Although TNF inhibitors suppress bone destruction in patients with rheumatoid arthritis (RA), TNFα stimulation alone does not directly induce osteoclasts, bone-resorbing cells. With the…
Abstract Number: 955 • 2013 ACR/ARHP Annual Meeting
Myeloid Deletion Of SIRT1 Aggravates Serum Transfer Arthritis But Ameliorate Collagen-Induced Arthritis
Sang-Il Lee¹, Yun-Hong Cheon², Won Seok Lee² and Ji-Min Kim³, ¹Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, South Korea, ²Rheumatology, Department of Internal Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine, Jeonju, South Korea, ³Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, South Korea
Background/Purpose: SIRT1 plays a pivotal role in regulating the inflammatory response. Thus, we assessed the role of SIRT1 in K/BxN serum transfer arthritis as a…
Abstract Number: 307 • 2013 ACR/ARHP Annual Meeting
Abnormal Imaging and Increased Osteoclast Precursors In a Psoriasis Cohort Are Associated with New Onset of Psoriatic Arthritis
Ralf G. Thiele¹, Yahui Grace Chiu¹, Francisco A. Tausk², Bethany A. Marston¹, Gregory Dieudonne³, Vaseem Chengazi³, Michelle Smith¹, Sharon Moorehead¹, Rick Barrett¹ and Christopher T. Ritchlin¹, ¹Allergy, Immunology and Rheumatology, University of Rochester, Rochester, NY, ²Dermatology, University of Rochester, Rochester, NY, ³Radiology, University of Rochester, Rochester, NY
Background/Purpose: Psoriasis (Ps) precedes joint inflammation by about 10 years in patients who develop psoriatic arthritis (PsA). Several studies have documented abnormal musculoskeletal imaging findings…
Abstract Number: 2616 • 2012 ACR/ARHP Annual Meeting
The Transition From Psoriasis (Ps) to Psoriatic Arthritis (PsA) Is Associated with Elevated Circulating Osteoclast Precursors (OCP) and Increased Expression of DC-STAMP
Ya-Hui Chiu¹, Edward M. Schwarz², Dafna D. Gladman³, Sharon Moorehead⁴, Michelle Smith⁴, Rick Barrett⁴ and Christopher T. Ritchlin⁴, ¹Allergy, Immunology, and Rheumatology, University of Rochester, Rochester, NY, ²Center for Musculoskeletal Research, University of Rochester, Rochester, NY, ³Division of Rheumatology, Toronto Western Hospital and University of Toronto, Toronto, ON, Canada, ⁴Allergy, Immunology and Rheumatology, University of Rochester, Rochester, NY
Background/Purpose: Approximately 20% of psoriasis (Ps) patients (pts) develop psoriatic arthritis (PsA). Early diagnosis and therapy of PsA can limit bone and joint damage; however,…
Abstract Number: 1207 • 2012 ACR/ARHP Annual Meeting
Impact of Anti Tumor Necrosis Factor-Alpha Therapy in Rheumatoid Arthritis On Osteoclast Activation and B Cells
Ezinma Ezealah¹, Jennifer Hossler¹, Jamie Biear¹, Christopher A. Cistrone¹, Teresa Owen¹, Nida Meednu¹, Kelly Callahan¹, Arumugam Palanichamy¹, Ignacio Sanz², Allen P. Anandarajah¹, Ralf G. Thiele¹, Darren Tabechian³, R. John Looney¹ and Jennifer H. Anolik¹, ¹Medicine- Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, ²Rheumatology, Emory University, Atlanta, GA, ³Allergy/Immun/Rheumatology, Univ of Rochester Schl of Med, Rochester, NY
Background/Purpose: Serum receptor activator of NFkB ligand (RANKL) and its natural decoy receptor, osteoprotegerin (OPG), play key roles in osteoclast activation. In a group of…
Abstract Number: 21 • 2012 ACR/ARHP Annual Meeting
IL-32 and IL-17 Interact and Aggravate Osteoclastogenesis in Rheumatoid Arthritis
Bo Young Yoon¹, Young-Mee Moon², Yang-Mi Her², Hye Jwa Oh², Jae-Seon Lee², Kyoung-Woon Kim³, Seon-Yeong Lee², Yun-Ju Woo², Kyung-Su Park², Sung-Hwan Park⁴, Ho-Youn Kim² and Mi-La Cho², ¹Inje University Ilsan Paik Hospital, Goyang, South Korea, ²Rheumatism Research Center, Catholic Research Institute of Medical Science, Catholic University of Korea, Seoul, South Korea, ³Conversant Research Consortium in Immunologic disease, The Catholic University of Korea, Seoul St. Mary's Hospital, Seoul, South Korea, ⁴Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul St. Mary's Hospital, Seoul, South Korea
Background/Purpose: Interleukin (IL)-32 and IL-17 play critical roles in pro-inflammatory responses and are highly expressed in the synovium of patients with rheumatoid arthritis (RA). We…

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