Platelet Derived Growth Factors (PDGF)
Jennifer Fries
Platelet-Derived Growth Factor is the principal mitogen found in mammalian serum and is released from platelets during clot formation.1 PDGF elicits multifunctional actions with a variety of cells, including mitogenesis of mesoderm-derived cells, increased extracellular matrix synthesis, and chemotaxis and activation of neutrophils, monocytes and fibroblasts. PDGF is mitogenic for dermal and tendon fibroblasts, vascular smooth muscle cells, glial cells and chondrocytes. PDGF appears to interact with Transforming Growth Factor-1 in accelerating wound healing.2 However, PDGF may also be pathogenic in arteriosclerosis and neoplasia.3 The mitogenic activities of all PDGF products are tested in culture using Swiss 3T3 cells or NR6-3T3 fibroblasts.4
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