Objective To investigate the effect of C3 a on vascular endothelial growth factor(VEGF)secretion in cultured human retinal pigment epithelial cells(RPECs). Methods RPECs were cultured in the presence of C3 a at different concentrations(0.1 μmol/L and 0.3 μmol/L)for 24 h,48 h and 72 h. Enzyme linked immunosorbent assay(ELISA)and semiquantitative reverse transcription-polymerase chain reaction(RT-PCR)were used to detect the protein and mRNA levels of VEGF. Results The protein expression of VEGF influenced by ...