| AC | Adenylate cyclase |
| ACPA | Anti-citrullinated protein antibodies |
| ADAMTS | A disintegrin and metalloproteinase with thrombospondin motifs |
| Breg | Regulatory B cells |
| cAMP | Adenylate cyclase activity |
| CD | Crohn’s disease |
| CIA | Collagen-induced arthritis |
| CNS | Central nervous system |
| CREB | cAMP response element-binding |
| CRF | Corticotropin-releasing factor |
| DC | Dendritic cells |
| DNBS | Dinitrobenzene sulfonic acid |
| DSS | Dextran Sodium Sulfate |
| EAE | Experimental autoimmune encephalomyelitis |
| ECM | Extracellular matrix |
| ERK | Extracellular regulated kinases |
| Fn-fs | Fibronectin-fragments |
| GHRF | Growth hormone–releasing hormone |
| GPCRs | G-protein-coupled receptors |
| GRK | GPCR kinase |
| IBD | Inflammatory bowel disease |
| IFN | Interferon |
| IL- | Interleukin |
| iNOS | Inducible nitric oxide synthase |
| IRF | Interferon regulatory factor |
| KO | Knockout |
| LPS | Lipopolysaccharide |
| MAPK | Mitogen-activated protein kinase |
| MMP | Matrix metalloproteinase |
| MS | Multiple Sclerosis |
| NFκB | Nuclear factor κB |
| NO | Nitric oxide |
| NOD | Non-obese diabetic |
| OA | Osteoarthritis |
| PACAP | Pituitary adenylate cyclase-activating polypeptide |
| PBMC | Peripheral blood mononuclear cell |
| PG | Prostaglandin |
| PKA | Protein kinase A |
| RA | Rheumatoid arthritis |
| RAMP | Receptor activity modifying protein |
| SF | Synovial fibroblasts |
| SNP | Single-nucleotide polymorphism |
| SpA | Spondyloarthritis |
| SS | Sjögren’s syndrome |
| Th | T helper |
| TLR | Toll-like receptors |
| TNBS | Trinitrobenzenesulfonic acid |
| TNF | Tumor necrosis factor |
| Treg | Regulatory T cells |
| UC | Ulcerative Colitis |
| UCN | Urocortin |
| uPA | Urokinase-type plasminogen activator |
| uPAR | Urokinase-type plasminogen activator receptor |
| VIP | Vasoactive intestinal peptide |