Objective To investigate the mechanism of prolonged uterine hemorrhage after terminating early pregnancy by mifepristone plus misoprostol.Methods Forty-five decidua specimens were obtained from 45 pregnant women wit...Objective To investigate the mechanism of prolonged uterine hemorrhage after terminating early pregnancy by mifepristone plus misoprostol.Methods Forty-five decidua specimens were obtained from 45 pregnant women with amenorrhea of 6-7 week duration. Fifteen women were treated with mifepristone and 15 were treated with mifepristone plus misoprostol. The remaining 15 served as controls. The tPA and PAI-1 mRNA levels were estimated by reverse transcription-polymerase chain reaction. Chromogenic assay and enzyme-linked immunosorbent assay were used to detect tPA activity and PAI-1 protein level in decidua. Results The activities of tPA in the mifepristone plus misoprostol group and in the mifepristone group were 46.91±20.74?IU/mg*protein and 64.25±35.81?IU/mg*protein respectively, lower than those in the normal decidua group (99.76±58.61?IU/mg*protein, P<0.05). tPA mRNA levels in the mifepristone plus misoprostol group were the highest (1.43±0.39) among the groups. In the mifepristone group, tPA mRNA level (0.90±0.16) was not significantly different from that in the normal decidua group (0.94±0.17). The protein and mRNA expression levels of PAI-1 were not significantly different among the three groups (P>0.05).Conclusions Mifepristone plus misoprostol decreased tPA activity in human early decidua by post-transcription pathways, which may influence decidua shedding, endometrial angiogenesis, endometrial remodeling, and cause prolonged uterine hemorrhage after drug abortion.展开更多
Objective To investigate the action of mifepristone plus misoprostol on decidua at the level of vascular endothelial growth factor (VEGF) mRNA and its protein expression, as well as the mechanism of prolonged uterine ...Objective To investigate the action of mifepristone plus misoprostol on decidua at the level of vascular endothelial growth factor (VEGF) mRNA and its protein expression, as well as the mechanism of prolonged uterine hemorrhage after terminating early pregnancy with these drugs.Methods Forty-five decidua specimens were obtained from 45 pregnant women with amenorrhea of 6 - 7 weeks' duration, in which 15 women were treated with mifepristone and 15 were given mifepristone plus misoprostol. Enzyme-linked immunosorbant assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR) were used to detect VEGF protein and mRNA levels in decidua.Results In all three groups, only the VEGF121 amplification product of 452 bp was visualized. The mRNA and protein levels of VEGF showed no significant differences among the three groups ( P ＞ 0.05).Conclusion In humans, early decidua VEGF121 mRNA is the main isoform. The action of mifepristone plus misoprostol on blood vessels in human decidua may be medicated by some factors other than VEGF.展开更多
文摘Objective To investigate the mechanism of prolonged uterine hemorrhage after terminating early pregnancy by mifepristone plus misoprostol.Methods Forty-five decidua specimens were obtained from 45 pregnant women with amenorrhea of 6-7 week duration. Fifteen women were treated with mifepristone and 15 were treated with mifepristone plus misoprostol. The remaining 15 served as controls. The tPA and PAI-1 mRNA levels were estimated by reverse transcription-polymerase chain reaction. Chromogenic assay and enzyme-linked immunosorbent assay were used to detect tPA activity and PAI-1 protein level in decidua. Results The activities of tPA in the mifepristone plus misoprostol group and in the mifepristone group were 46.91±20.74?IU/mg*protein and 64.25±35.81?IU/mg*protein respectively, lower than those in the normal decidua group (99.76±58.61?IU/mg*protein, P<0.05). tPA mRNA levels in the mifepristone plus misoprostol group were the highest (1.43±0.39) among the groups. In the mifepristone group, tPA mRNA level (0.90±0.16) was not significantly different from that in the normal decidua group (0.94±0.17). The protein and mRNA expression levels of PAI-1 were not significantly different among the three groups (P>0.05).Conclusions Mifepristone plus misoprostol decreased tPA activity in human early decidua by post-transcription pathways, which may influence decidua shedding, endometrial angiogenesis, endometrial remodeling, and cause prolonged uterine hemorrhage after drug abortion.
文摘Objective To investigate the action of mifepristone plus misoprostol on decidua at the level of vascular endothelial growth factor (VEGF) mRNA and its protein expression, as well as the mechanism of prolonged uterine hemorrhage after terminating early pregnancy with these drugs.Methods Forty-five decidua specimens were obtained from 45 pregnant women with amenorrhea of 6 - 7 weeks' duration, in which 15 women were treated with mifepristone and 15 were given mifepristone plus misoprostol. Enzyme-linked immunosorbant assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR) were used to detect VEGF protein and mRNA levels in decidua.Results In all three groups, only the VEGF121 amplification product of 452 bp was visualized. The mRNA and protein levels of VEGF showed no significant differences among the three groups ( P ＞ 0.05).Conclusion In humans, early decidua VEGF121 mRNA is the main isoform. The action of mifepristone plus misoprostol on blood vessels in human decidua may be medicated by some factors other than VEGF.
