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The concentrations of cartilage proteoglycan (aggrecan), stromelysin-1, tissue inhibitor of metalloproteinases-1 (TIMP-1) and procollagen II C-propeptide in knee joint fluid and the levels of aggrecan, hyaluronan and keratan sulfate in serum were measured before and after exercise in 33 healthy athletes. The samples before exercise were obtained after 24 h rest from running or soccer and the samples...
Monospecific antibodies are produced which are specific for fragments of the connective tissue protein aggrecan, generated by specific stromelysin cleavage. These monospecific antibodies are used in an assay system to detect polypeptide fragments of aggrecan, produced by the specific cleavage of aggrecan by stromelysin. The presence of aggrecan polypeptide fragments demonstrates stromelysin activity...
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