Increased metabolic activity of fibroblasts derived from cords compared with nodule fibroblasts sampling from patients with Dupuytren's contracture.
BACKGROUND
The pathogenesis of Dupuytren's contracture is characterized by progress in several stages. The disease process includes two structurally distinct fibrotic elements, the so-called nodule and the cord. Several hypotheses have been proposed regarding the cause. Until now, there has been ongoing discussion regarding whether cords or nodules are the primary source of the disease.


METHODS
Tissues from 24 patients with Dupuytren's disease were obtained during hand surgery, providing samples from nodules and cords for cell culture. Tissue from the flexor retinaculum excised from healthy patients during surgical procedures on the hand served as control. By using the explant culture technique, fibroblasts were isolated and grown in standard medium. Besides morphological analysis, XTT proliferation tests were performed at various time periods to measure the metabolic activity of the cultivated fibroblasts.


RESULTS
Statistical analysis revealed significant differences of nodule- and cord-derived fibroblasts after 1 hour (p = 0.0150), 8 hours (p < 0.0001), and 16 hours (p < 0.0001).


CONCLUSIONS
The authors suggest that distinct proliferative properties of Dupuytren-derived fibroblasts are dependent on the cells' origin. Conclusions about the cause or pathogenesis cannot yet be drawn. Further investigation concerning their apparently different fibroproliferative properties is necessary.
Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany.
Harun
H
Seyhan
Jürgen
J
Kopp
Stefan
S
Schultze-Mosgau
Raymund E
RE
Horch
D002478:Cells, Cultured; D004387:Dupuytren Contracture / Q000378:metabolism* / Q000473:pathology; D005347:Fibroblasts / Q000473:pathology*; D006801:Humans