Figure 1.

Effect of RWPs and several authentic RWPs on PDGF_AB-stimulated release of VEGF into conditioned medium of VSMCs. VSMCs were exposed to either solvent (0.1% dimethylsulphoxide (DMSO)), RWPs (30 μg ml⁻¹) or a polyphenol (30 μM) for 30 min before the addition of PDGF_AB for 24 h. Thereafter, the amount of VEGF protein into conditioned medium was determined by immunoassay. Results are shown as mean±s.e.m. of three different experiments performed in triplicate. ^*versus control, ^#versus PDGF_AB treatment alone.