临产前后绒毛膜中激活的NF-κB与PGF合成调节酶的相关性

Correlation between activated NF-κB and synthetase regulating PGF in chorion before and after labor

目的分析足月妊娠妇女临产前后绒毛膜中核因子-κB(NF-κB)的激活与前列腺素F(PGF)合成调节酶的蛋白表达变化及其相关性。方法收集足月妊娠临产及未临产妇女各15例的绒毛膜组织,采用Western Blot方法检测其中NF-κB的激活水平以及环氧合酶(COX)-2、醛糖还原酶(AKR1B)1的蛋白水平,并分析NF-κB的激活水平与COX-2、AKR1B1表达的相关性。结果①临产组绒毛膜中COX-2、AKR1B1的蛋白水平均高于未临产组,差异均有极显著性(F值分别为7.737和8.772,均P<0.01);NF-κB的激活水平也高于未临产组,差异有显著性(F=38.563,P<0.05);②临产前后绒毛膜中NF-κB的激活水平与COX-2、AKR1B1的表达水平均呈显著正相关(r值分别为0.243和0.168,均P<0.05)。结论临产后绒毛膜中激活的NF-κB和PGF合成调节酶的表达水平增高,且NF-κB的激活可以上调PGF合成调节酶表达的过程,导致PGF合成增加,这可能是NF-κB参与足月妊娠分娩启动的机制之一。

Objective To study the changes and relationship between activation of NF-κB and the expression of PGF synthetase in chorion before and after labor in term pregnancy.Methods Fifteen cases of term labor （ TL） and 15 cases of term non-labor （ TNL） were selected as the objects of study.Western Blot test was used to observe the expression of activated NF-κB, COX-2 and AKR1B1 in their chorion, and the correlation between them was analyzed.Results Compared with the TNL group, the levels of COX-2 and AKR1B1 increased in TL group, there were significant differences between two groups （F value was 7.737 and 8.772, respectively, both P〈0.01）, and the level of activated NF-κB was also higher in TL group （F=38.563,P〈0.05）.Both the expressions of COX-2 and AKR1B1 were positively correlated with the activated NF-κB in chorion before and after labor （r value was 0.243 and 0.168, respectively, both P〈0.05）. Conclusion The levels of NF-κB, COX-2 and AKR1B1 protein increase in human chorion after labor, and the activated NF-κB can up-regulate the expression of PGF synthetase and lead to increased synthesis of PGF.It may be the mechanism of NF-κB participating in initiation of labor.