Abstract
Cartilage-derived growth factor (CDGF), a protein closely related to basic fibroblast growth factor, is known to have both mitogenic and chemokinetic properties in microvascular endothelial cells (MVEC). Becaue of the angiogenic properties of CDGF and its rate in accelerating wound repair, the capacity of this factor to stimulate both proliferation and matrix synthesis was compared in distinct populations of vascular endothelial cells: MVEC from bovine adrenal cortex and macrovascular endothelial cells from the bovine aorta (BAEC). No significant differences in the responses to mitogenic stimulation using CDGF (5-100 units/ml) were observed using MVEC and BAEC. Only rapidly dividing MVEC, however, showed significant increases in collagen secretion in the presence of CDGF. The differential responsiveness of these two cell populations to a defined growth factor underscores the phenotypic diversity of endothelium.
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