Influence of Hypoxia on Vascular Endothelial Growth Factor and Basic Fibroblast Growth Factor in Cultured Human Trophoblast

Objective: To investigate whether the hypoxic condition influences on the expression of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) mRNA in the cultured human trophoblast. Methods: Trophoblasts were isolated from the normal placenta in early pregnancy (6-10 weeks in gestation). Isolated trophoblasts were cultured under normoxic (5% , 95% humid air in incubator) and hypoxic (MERCK, 1% , 99% ) conditions for 24, 48 and 72 hours, respectively. Total RNA was extracted from the cultured trophoblasts in each culture condition. The expressions of VEGF and bFGF mRNA were determined by reverse transcription-polymerase chain reaction (RT-PCR) and Northern blot analysis. Results: The expression of mRNA was significantly increased in the hypoxic condition compared to the normoxic condition and control after 24 hours (p mRNA was also significantly increased in the hypoxic condition compared to the normoxic condition and control after 48 hours (p and mRNA. The expression of bFGF mRNA was significantly increased in the hypoxic condition compared to the normoxic condition and control at 24 hours and 48 hours (p