Cytokine release by EPCs cultured either on fibrin or on fibronectin. Cytokine release was statistically increased in supernatants of EPC compared with HUVECs (δδ < 0.01; δδδ < 0.001 versus HUVECs, n = 5). IL‐16, PDGF‐BB, MIF, SDF‐1, HGF, IP10 and MIG were statistically higher when EPCs were grown on fibrin than on fibronectin (*P < 0.05; ***P < 0.001 versus fibronectin, n = 5), while MCFS, Gro‐α, IL‐8 and MCP‐1 were expressed in a comparable way on both matrices.