Aminoterminal extension peptides from type I procollagen normalize excessive collagen synthesis of scleroderma fibroblasts
- 1 January 1978
- journal article
- research article
- Published by Springer Nature in Archives of Dermatological Research
- Vol. 263 (2) , 171-180
- https://doi.org/10.1007/bf00446438
Abstract
Fibroblasts derived from a skin biopsy of a patient with scleroderma in the sclerotic stage were shown to have a higher rate of DNA synthesis, and to synthesize more collagen than fibroblasts from a healthy control. The addition of procollagen peptides to the culture medium of scleroderma fibroblasts almost normalized the collagen synthesis. This observation indicates that the mechanism for the regulation of collagen synthesis by feed back inhibition of prollagen peptides is functioning in this disease. It is suggested that the level of biologically active procollagen peptides is lowered. Skerodermie-Fibroblasten einer Patientin im sklerotischen Stadium zeigten unter in vitro Bedingungen eine erhöhte DNA-Syntheserate und eine gesteigerte Kollagensynthese. Durch Zugabe von Prokollagenpeptiden zum Inkubationsmedium konnte die Kollagensythese auf nahezu normales Niveau gebracht werden. Dieses Ergebnis läßt den Schlußzu, daß die Kontrolle der Kollagensynthese über einen »feed-back«-Mechanismus intakt ist. Es ist deshalb möglich, daß der Gehalt an Prokollagenpeptiden selbst in den Sklerodermie-Fibroblasten erniedrigt ist.Keywords
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