Heparin affects both dermal fibroblast proliferation and collagen and may mediate these effects by altering the levels of basic fibroblast growth factor (bFGF) and transforming growth factor-beta1 (TGF-beta1) production as a wound healing modulator. The purpose of this study is to probe the effect of heparin on bFGF and TGF-beta1 production by human normal skin and hyperplastic scar fibroblasts. This research investigates the effect of heparin on bFGF and TGF-beta1 production by human normal skin and hyperplastic scar fibroblasts with exposure to 0, 100, 300, or 600 microg/ml heparin for 24, 48, 72, or 96 hours in a serum-free in vitro model. Levels of bFGF and TGF-beta1 in the supernatants were determined by enzyme-linked immunosorbant assay. All doses of heparin significantly stimulated production of bFGF by normal skin (393% to 1019% increase) and hyperplastic scar fibroblasts (405% to 899% increase) at all time points (P < .05). Heparin (300 and 600 microg/ml) also stimulated TGF-beta1 production by normal skin (26% to 83%) and hyperplastic scar fibroblasts (63% to 85%) with statistical significance (P < .05) at various time points. These effects of heparin on normal skin and hyperplastic scar fibroblasts may have implications for hyperplastic scar formation and wound healing in vivo.
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