Abstract
To assess the migratory response of fibroblasts in vitro, normal human dermal fibroblasts
(NHDF) were cultured in the presence of l-ascorbic acid 2-phosphate to induce a multilayered structure. Round wounds were made
by punching, and the migratory response was evaluated by counting the number of migrating
cells in the wounded areas. Collagenase activity in the culture-medium was then measured.
When the wound model was treated with bFGF, IL-1α or PDGF, the migratory response was facilitated with increased collagenase secretion.
In contrast, treatment with TGF-β reduced the migratory response and collagenase secretion. Since the multilayered
structure is rich in collagenous matrix, degradation of the matrix by secreted collagenase
is probably necessary for the cells to migrate into the wounded areas. Furthermore,
malotilate, which is now under development as an agent for wound therapy, facilitated
the migratory response of NHDF with increased collagenase secretion in this wound
model, suggesting that the wound healing effect of malotilate is in part attributable
to stimulated migration of fibroblasts to wounded areas subsequent to extracellular
matrix-degradation.
Keywords
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Article info
Publication history
Accepted:
January 4,
1998
Received in revised form:
November 14,
1997
Received:
July 25,
1997
Identification
Copyright
© 1998 Elsevier Science Ireland Ltd. Published by Elsevier Inc. All rights reserved.
