摘要
目的 研究妊娠高血压综合征 (简称妊高征 )患者胎盘绒毛组织内皮素 1(endothelin- 1,ET- 1)及内皮型一氧化氮合成酶 (endothelial nitric oxide synthase,e NOS)的基因表达 ,探讨 ET- 1及一氧化氮在妊高征患者胎儿胎盘循环中对脐动脉血流变化的作用。 方法 对妊高征患者及正常妊娠孕妇的胎盘绒毛组织 ,用地高辛标记的 ET- 1及 e NOS互补脱氧核糖核酸 (com plem entary deoxyri-bonucleotide,c DNA)探针进行点印迹杂交 ,利用 L eica QWIN图象处理系统测量每个杂交点的平均光密度值。在分娩前一日用彩色超声多普勒仪测定其脐动脉血流 S/ D值。 结果 妊高征患者胎盘绒毛组织 ET- 1基因表达明显增多 ,其平均光密度值妊高征组为 0 .43± 0 .0 3,正常组为 0 .2 3± 0 .44两组间差别显著 P<0 .0 5。而妊高征组胎盘绒毛组织 e NOS基因的表达明显低于正常对照组 ,其平均光密度值妊高征组为 0 .19± 0 .2 2 ,正常组为 0 .38± 0 .0 2 ,两组间差别显著 P<0 .0 5。妊高征组脐动脉S/ D值明显高于正常对照组 ,分别为 5 .92± 2 .13和 2 .11± 0 .2 2 ,两组间差别显著 P<0 .0 5。 结论 妊高征患者胎盘绒毛组织 ET- 1的表达明显增加 ,而内 e NOS的表达明显减少 ,脐动脉血流阻力亦明显增加。妊高征患者脐动脉血流?
Objective To study the expression of endothelin-1(ET-1) and endothelial nitric oxide synthase(eNOS) mRNA in the villus of pre-eclampsia and the effect of the ET-1 and eNOS on umbilical artery flow velocity wareforms. Methods Dot blotting, DIG-labeled human ET-1 and eNOS cDNA probes were used to examine the expression of the ET-1 and eNOS gene in the placental villus tissues of women with normal gestation and pre-eclampsia. Leica QWIN image disposal and analysis system were used to assess the mean OD of every dot. Colour doppler was used to examine the umbilical artery flow the day before childbirth. Results The level of ET-1 mRNA in placental villus was significantly higher in pre-eclampsia group than the normal group(0.43±0.03 versus 0.23±0.44,P<0.05), while the level of eNOS mRNA in placental villus was significantly lower(0.19±0.22 versus 0.38±0.02, P<0.05). The S/D velocity of umbilical artery flow was significantly higher in pre-eclampsia than that in control group(5.92±2.13 versus 2.11±0.22,P<0.05). Conclusions Expression of ET-1 gene increases and that of eNOS decreases in placental villus of pre-eclampsia and the S/D of umbilical artery flow is higher in pre-eclampsia. The increase of ET-1 and decrease of eNOS may contribute to the abnormal umbilical artery flow velocity waveforms of preeclampsia.
出处
《中华围产医学杂志》
CAS
2002年第3期174-176,共3页
Chinese Journal of Perinatal Medicine
