Figure 2.

Proteinases in joint destruction. Shown are the proteinases that are involved in the joint destruction that occurs in (a) osteoarthritis and (b) rheumatoid arthritis. ADAM, a disintegrin and metalloproteinase-like; ADAMTS, ADAM-thrombospondin; IL, interleukin; MMP, matrix metalloproteinase; MT, membrane-type; RANKL, receptor activator of nuclear factor-κB ligand; TNF, tumour necrosis factor; tPA, tissue-type plasminogen activator; uPA, urokinase-type plasminogen activator.