Abstract Number: 890 • 2019 ACR/ARP Annual Meeting
Adenosine A2A Receptor Signaling Activates FoxO1 and FoxO3 and Promotes Cartilage Autophagy
Background/Purpose: Osteoarthritis (OA) is a debilitating and costly condition caused by loss of articular cartilage secondary to chondrocyte dysfunction. Autophagy is a homeostatic pathway that…Abstract Number: 1967 • 2019 ACR/ARP Annual Meeting
Adenosine A2A Receptor Signals Through AMPK and SIRT1 to Increase Chondrocyte Homeostasis
Background/Purpose: OA is characterized by loss of cartilage and chondrocyte dysfunction. Our lab has shown CGS21680 (CGS, 1µM) activation of adenosine A2AR leads to chondrocyte…Abstract Number: 1038 • 2018 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: 1039 • 2018 ACR/ARHP Annual Meeting
Tenofovir Induces Osteopenia and Dipyridamole, an Inhibitor of the Ent-1 Nucleoside Transporter, Reverses the Osteopenic Effect of Tenofovir In Vivo
Background/Purpose: Osteopenia and fragility fractures have been associated with HIV infection. Tenofovir, one of the most commonly used antivirals in HIV, also leads to increases…Abstract Number: 1996 • 2018 ACR/ARHP Annual Meeting
Adenosine A2A Receptor (A2AR) Stimulation Enhances Mitochondrial Metabolism and Mitigates Reactive Oxygen Species-Mediated Mitochondrial Injury
Background/Purpose: Osteoarthritis (OA) is the most common form of arthritis, affecting nearly 10% of the US population. With age and injury, chondrocytes have diminished mitochondrial…Abstract Number: 1997 • 2018 ACR/ARHP Annual Meeting
Adenosine A2A Receptors Maintain Chondrocyte and Cartilage Homeostasis By Maintaining Expression of Anti-Inflammatory Regulators (Nur-77) and Suppressing Expression of Pro-Inflammatory Mediators
Background/Purpose: We have recently reported that adenosine A2A receptor (A2AR) knockout mice develop spontaneous osteoarthritis (OA) and intra-articular injection of adenosine prevents OA progression in…Abstract Number: 2001 • 2018 ACR/ARHP Annual Meeting
Adenosine A2A Receptor Stimulation Regulates Autophagy in Chondrocytes
Background/Purpose: Osteoarthritis (OA) is a debilitating condition characterized by chondrocyte dysfunction and loss of cartilage. Autophagy, a homeostatic process that occurs in times of cellular…Abstract Number: 2036 • 2018 ACR/ARHP Annual Meeting
Adenosine Receptors Expression As Predictor of Response to Methotrexate Therapy in Patients with Rheumatoid Arthritis
Background/Purpose: Methotrexate (MTX) is first line of therapy to treat Rheumatoid Arthritis (RA) patients and one third of patients do not respond to this drug.…Abstract Number: 2800 • 2018 ACR/ARHP Annual Meeting
Adenosine 2a Receptor Signals Act to Limit Autoimmune Arthritis By Inhibiting Pathogenic Germinal Center T Follicular Helper (GC-Tfh) Cells
Background/Purpose: CD4 germinal center (GC)-T follicular helper (Tfh) cells are important in the pathogenesis of autoimmune arthritis. Previous studies have shown that adenosine 2a receptor…Abstract Number: 616 • 2018 ACR/ARHP Annual Meeting
Supplementation of Methotrexate (MTX) with Ticagrelor Therapy Suppresses Disease Activity in Patients with Moderate to Very Active Ra; Further Evidence That Adenosine and Its Receptors Mediate the Anti-Inflammatory Activity of MTX
Background/Purpose: Low dose weekly MTX remains the anchor drug for treatment of Rheumatoid Arthritis. The principal mechanism by which MTX suppresses inflammation in Rheumatoid Arthritis…Abstract Number: 848 • 2018 ACR/ARHP Annual Meeting
A2A Adenosine Receptor Stimulation Switches TGF-β Signaling to Promote Chondrocyte Proliferation and Cartilage Regeneration
Background/Purpose: We previously found that intra-articular injections of liposomal preparations of adenosine completely prevent progression and reverse cartilage loss in post-traumatic OA. TGF-β signaling plays…Abstract Number: 948 • 2018 ACR/ARHP Annual Meeting
Effects of Antiretroviral Therapy with Tenofovir and Other Antiretroviral Drugs on the Inflammatory State and Bone Remodeling on Newly Diagnosed HIV-Patients at Basal and 3 Months after Starting Treatment
Background/Purpose: Bone alterations have been observed in the course of HIV infection, with a notable decreases in bone mineral density (BMD) and fractures due to…Abstract Number: 64 • 2017 ACR/ARHP Annual Meeting
The Effect of Adenosine A2A Receptor Stimulation on Mitochondrial Metabolism in the Pathogenesis and Treatment of Osteoarthritis
Background/Purpose: Osteoarthritis (OA) is the most common form of arthritis, affecting nearly 10% of the US population. There is no therapy to prevent the progression…Abstract Number: 905 • 2017 ACR/ARHP Annual Meeting
Regenerating Cartilage and Reversing Osteoarthritis (OA) Stimulation of Adenosine A2A Receptors (A2AR) Increases Cartilage Volume and Matrix in Vitro and In Vivo
Background/Purpose: We have recently reported that endogenously produced adenosine, interacting with A2AR, is a critical autocrine factor for maintenance of chondrocyte and cartilage homeostasis and…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…
ACR Meeting Abstracts