| AP-1 | activator protein-1 |
| CIA | collagen-induced arthritis |
| Col II | collagen II |
| DXM | dextromethorphan |
| ECM | extracellular matrix |
| ERK | extracellular-signal-regulated kinase |
| IKK | I kappa B kinase |
| IP-10 | interferon-gamma-inducible protein 10 |
| JNK | c-Jun N-terminal kinase |
| MAPK | mitogen-activated protein kinase |
| MMP | matrix metalloproteinases |
| NF-κB | nuclear factor-kappaB |
| NMDA | N-methyl-d-aspartate |
| OA | osteoarthritis |
| OSM | oncostatin M |
| RA | rheumatoid arthritis |
| TNF-α | tumor necrosis factor-alpha |