- Increased level of translatable collagenase messenger ribonucleic acid in rabbit synovial fibroblasts treated with phorbol myristate acetate or crystals of monosodium urate monohydrate. Brinckerhoff, C.E., Gross, R.H., Nagase, H., Sheldon, L., Jackson, R.C., Harris, E.D. Biochemistry (1982)