Conclusion: The Ang-2 can induce obvious changes of endothelin expression level in endothelial cell in hypoxia condition and this change can be reduced significantly by tee polyphenols. 结论:缺氧条件下,血管紧张素-2可显著增加培养的血管内皮细胞的内皮素浓度,茶多酚可显著降低血管紧张素-2引起的内皮素浓度的增加,从而起到保护作用。