Synovial and periarticular proteins

Synovial and periarticular proteins is a collective term referring to the diverse array of proteins and macromolecules found within the synovial cavity and the surrounding periarticular tissues of joints. This group includes structural components like type II collagen and aggrecan, lubricating proteins such as lubricin (proteoglycan 4), and various inflammatory mediators like cytokines and matrix metalloproteinases (MMPs). While not a single molecular target, these proteins represent the collective site of action for various intra-articular therapies. Drugs such as corticosteroids (e.g., triamcinolone) and viscosupplements (e.g., hyaluronic acid) are administered locally to the joint space to modulate the inflammatory environment or restore the mechanical properties of the synovial fluid. Consequently, this term is often used in a broad pharmacological context to describe the targets of local joint treatments in conditions like rheumatoid arthritis and osteoarthritis.

Other names

Synovial fluid proteinsJoint space proteinsPeriarticular tissue proteinsArticular proteins