During our careers, we have developed new and innovative concepts pertaining to the pathophysiology of osteoarthritis which have assisted in the development of new therapeutic approaches. Moreover, our laboratory has long sought to develop protective agents for osteoarthritic structural joint tissues. The most significant concepts that have originated from our lab are briefly outlined in this commentary.
Tissue engineering offers new strategies for developing treatments for the repair and regeneration of damaged and diseased tissues. These treatments, using living cells, will exploit new developments in understanding the principles in cell biology that control and direct cell function. Arthritic diseases that affect so many people and have a major impact on the quality of life provide an important target for tissue engineering. Initial approaches are in cartilage repair; in our own programme we are elucidating the signals required by chondrocytes to promote new matrix assembly. These principles will extend to other tissues of the musculoskeletal system, including the repair of bone, ligament and tendon.
In 44 consecutive patients with systemic sclerosis (SSc), plasma concentrations of von Willebrand factor (vWf) were higher than those of the vWf propeptide, but the propeptide showed less variability within patient subgroups. Higher values of the propeptide were observed in patients with early pulmonary involvement. A closer correlation of the propeptide than of vWf to biochemical markers of activity was also evident. Our results suggest that the propeptide, despite a shorter circulating half-time and lower plasma concentrations than vWf, is more useful in the assessment of disease activity in SSc.
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