A new rapid assay method of collagenase activity and its clinical applications Part 2. Determination of collagenase activity in human leucocytes and synovial fluids by the newly developed method

A newly developed collagenase assay method using (14)C-labeled soluble collagen as substrate has been applied to the determination of collagenase activity in human leucocytes and synovial fluids. The results indicated that collagenase activity in the both samples could be measured by this method as observed with tadpole collagenase, except that 35 % dioxane was preferable for the extraction of the enzyme digestion products in the case of synovial fluids. Collagenase activity determined by the present method was well correlated with that obtained by the conventional assay method using reconstituted collagen fiblils as substrate (r=0.963 and 0.829 (p