Abstract Number: 1932 • 2017 ACR/ARHP Annual Meeting
A2A Adenosine Receptor (A2AR) Stimulation Modulates NR4A2 Orphan Receptor Expression during Osteoclast Differentiation
Background/Purpose: Orphan receptors comprise a large number of evolutionarily conserved molecules that have unknown ligands but may have potent biologic effects. Among these receptors are…Abstract Number: 1939 • 2017 ACR/ARHP Annual Meeting
Dipyridamole, an Ent-1 Adenosine Transporter Inhibitor, Reverts De Osteoclastic Phenotype Induced By Tenofovir
Background/Purpose: Adenosine, generated from the catabolism of adenine nucleotides, modulates cell function by interacting with specific cell-surface receptors (A1R, A2AR, A2BR, A3R). Inhibition of osteoclast…Abstract Number: 1100 • 2016 ACR/ARHP Annual Meeting
Tenofovir, a Nucleoside Analog Reverse Transcriptase Inhibitor for Treatment of HIV, Promotes Osteoclast Differentiation and Decreases Osteoblast Formation By a Mechanism Depending on ATP Release and Adenosine
Background/Purpose: Human Immunodeficiency Virus (HIV) infection devastates the immune system but also affects tissues and organs such as kidney, liver, central nervous system, heart and…Abstract Number: 1848 • 2016 ACR/ARHP Annual Meeting
Adenosine A2A Receptor (A2AR) Stimulates Collagen Type III Synthesis Via β-Catenin Activation in Vitro and in Vivo
Background/Purpose: Fibrosis of skin and other organs is a hallmark of Scleroderma. We and others have previously reported that A2AR plays a role in skin…Abstract Number: 2129 • 2016 ACR/ARHP Annual Meeting
Extracellular Adenosine Deficiency Plays a Role in the Pathogenesis of Osteoarthritis (OA) and Adenosine Replacement Prevents Post-Traumatic Osteoarthritis
Background/Purpose: Extracellular adenosine is highly regulated and plays an important homeostatic role via occupancy of cell surface receptors (A1R, A2AR, A2BR, A3R). Mice lacking A2AR…Abstract Number: 2270 • 2016 ACR/ARHP Annual Meeting
Inflammasome/IL-1β Activation Induced By Calcium Pyrophosphate Dihydrate Crystals Is Mainly Driven By a P2X7 Receptor-Independent Potassium Efflux
Background/Purpose: Calcium pyrophosphate crystals including monoclinic and triclinic dihydrate phases (m- and t-CPPD) are found in 40% of end-stage osteoarthritis (OA) patients. Frequently asymptomatic, it…Abstract Number: 1613 • 2015 ACR/ARHP Annual Meeting
Expression of the Genes Facilitating Methotrexate Action within Rheumatoid Subcutaneous Nodules
Background/Purpose: Methotrexate (MTX) is the most frequently used DMARD in the treatment of rheumatoid arthritis (RA). There are known links between the use of MTX…Abstract Number: 2010 • 2015 ACR/ARHP Annual Meeting
Adenosine A2A Receptor, but Not A2B Receptor, Deletion Leads to Development of Osteoarthritis (OA) in Mice and Administration of a Liposomal Suspension of Adenosine Prevents/Treats Osteoarthritis in Rats
Background/Purpose: Adenosine, acting at its receptors, regulates chondrocyte function and inflammation, two components of OA. Mice lacking adenosine A2A receptors (A2AR) have increasing difficulty walking…Abstract Number: 2209 • 2015 ACR/ARHP Annual Meeting
Stimulation of the Adenosine A2A Receptor (A2AR) Regulates the Expression of Netrin-1 (Ntn1) and Its Receptors (Unc5b, DCC) and Inhibits Wear Particle-Induced Inflammatory Osteolysis in a Model of Joint Prosthesis Loosening
Background/Purpose: Ntn1 is a member of the family of axonal guidance proteins that plays a role in leukocyte function and inflammation and is critical for…Abstract Number: 2215 • 2015 ACR/ARHP Annual Meeting
Ticagrelor Regulates Osteoblast and Osteoclast Function and Promotes Bone Formation in Vivo By Increasing Adenosine Levels
Background/Purpose: The antiplatelet drugs Ticagrelor and clopidogrel are P2Y12 antagonists but ticagrelor also inhibits cellular adenosine uptake via ENT1 and thereby increases extracellular adenosine levels.…Abstract Number: 22 • 2014 ACR/ARHP Annual Meeting
Adenosine a2A Receptor (A2AR) Stimulation Inhibits Osteoclast Differentiation and Promotes Osteoblast Formation By Regulation of Axon Guidance Proteins
Background/Purpose Semaphorins (Sema), axonal guidance proteins, play a role in communication between osteoclast and osteoblast. Thus, sema4D, secreted by osteoclasts, binds to its receptor PlexinB1…Abstract Number: 19 • 2014 ACR/ARHP Annual Meeting
Adenosine Receptors Stimulate Bone Regeneration
Background/Purpose Such orthopedic procedures as spinal fusion and repair of bone defects due to trauma, infection or metastatic disease, require formation of new bone. Adenosine,…Abstract Number: 36 • 2014 ACR/ARHP Annual Meeting
The Use of Three-Dimensionally Printed β-Tricalcium Phosphate/Hydroxyapatite to Further Understand the Regulation of Adenosine Receptors in Osteoclast Formation and Promotion in Bone Regeneration
Background/Purpose Bone defects resulting from trauma or infection need timely and effective treatments to restore damaged bone. Using specialized three-dimensional (3-D) printing technology, combined with…Abstract Number: 33 • 2014 ACR/ARHP Annual Meeting
Stimulation of the Adenosine a2A receptor (A2AR) Regulates the Expression of Netrin1 and Their Receptors (Unc5b, DCC) and Inhibits Osteoclast Differentiation and Inflammatory Bone Destruction
Background/Purpose A variety of molecules mediate communication between osteoclasts and osteoblasts during bone remodeling. Netrin1 is a member of the family of axonal guidance proteins,…Abstract Number: 2947 • 2014 ACR/ARHP Annual Meeting
Adenosine a2A Receptor As a Potential New Therapeutic Target for the Prevention/Treatment of Osteoarthritis
Background/Purpose Osteoarthritis results from trauma, mechanical factors or metabolic changes in bone and cartilage. Adenosine, acting via the A2AR, inhibits inflammation and plays a critical…
ACR Meeting Abstracts