Objective To study the effects of mifepristone on ER,PR and EGFR in uterine leiomyoma ce lls. Methods ER,PR and EGFR in leiomyoma cells treated with di fferent concentrat ions of mifepristone were determined and compared. Results:(1)Af ter interfered by mif epristone,the ER level didn’t change significantly. (2)PR and EGFR levels were h i gher in secretory phase than in proliferative phase, they decreased significantl y in 1.0,10-μmol·L -1 group compared with in 0.1-μmol·L -1 and contr ol group. There was no difference in 1.0-μmol·L -1 group compared with i n 10- μmol·L -1 group. Conclusions (1)Mifepristone suppresses leiomyom a through decreasing PR and EGFR but not ER. (2)Mifepristone down-regulates PR, EGFR in a threshoul concentration of 1.0-μmol·L -1. When the concentrati on increases,the suppression is not enhanced. |