[Metabolism of collagen in progressive scleroderma and dermatomyositis].

The biosynthesis of collagen was studied in skin of healthy subjects and patients with progressive sclerodermia and dermatomyositis. The incorporatione of radioactive precursors (14C-proline), the rate of so-called collage-like-protein in sera, and the excretion of hydroxyprolin in urine depended on the severity of the dermatomyositis in progressive sclerodermia.