妊娠中期脐动脉超声血流参数及血清PSG1对子痫前期的二级预防价值

目的 评价孕中期脐动脉超声血流参数及血清妊娠特异性β1糖蛋白-1(PSG1)对子痫前期的预测价值。方法 收集2020年6月至2021年8月于本院住院的110例孕妇资料及孕中期血清PSG1检测结果,其中重度子痫前期27例、轻度子痫前期31例、正常对照组孕妇52例。比较三组孕中期各脐动脉超声血流参数及血清PSG1水平,运用受试者操作特征(ROC)曲线分析上述指标对子痫前期的预测诊断价值。结果 孕中期时孕妇脐动脉血流搏动指数(PI)、血流阻力指数(RI)、脐动脉收缩期最大流速与舒张末期血流速度比(S/D)水平,重度子痫前期组显著高于轻度子痫前期组,同时轻度子痫前期组显著高于对照组(P<0.05)。孕中期血清PSG1水平中,重度子痫前期组显著低于轻度子痫前期组,同时轻度子痫前期组显著低于对照组(P<0.05)。孕中期脐动脉血流参数及血清PSG1对子痫前期均有一定的预测价值,其中PI、RI、S/D、PSG1预测子痫前期的ROC曲线下面积分别为0.630、0.710、0.670、0.710。通过联合PI、RI、S/D、PSG1指标对子痫前期的预测价值最高,其ROC曲线下面积为0.835...     

妊娠高血压晚期的血流频谱和围产期胎儿情况及血流阻力对孕妇妊娠结局的影响

目的探讨妊娠高血压(HDCP)晚期的血流频谱和围产期胎儿情况及血流阻力对孕妇妊娠结局的影响。方法选择2017年5至2019年6月在成都市双流区妇幼保健院收治的具有完整产检信息的50例妊娠晚期HDCP孕妇(观察组),年龄22～35岁,平均年龄29.2岁;体质量指数(BMI)29.3～36.5 kg/m~2,平均BMI 33.5 kg/m~2;舒张压13.1～14.7 kPa(98.5～110.4 mmHg),收缩压19.7～20.4 kPa(148.1～153.7 mmHg);孕周34～39周,平均孕周37.8周;20例妊娠期高血压,14例子痫前期,8例子痫,5例慢性高血压并发子痫前期,3例妊娠合并慢性高血压。以同期50例正常健康孕妇作为对照组,年龄23～36岁,平均年龄29.7岁;BMI 28.6～36.4 kg/m~2,平均BMI 33.1 kg/m~2。收集32周产检时两组孕妇彩色多普勒超声检测子宫动脉及脐动脉的阻力指数(RI)、血流搏动指数(PI)、收缩期峰值血流速度与舒张末期血流速度的比值(S/D)数据和出生后新生儿生长指标。比较两组孕妇子宫动脉及脐动脉血流阻力指标变化和出生后新生儿生长指标,观察两组新生儿1 min和5 min Apgar评分及妊娠结局。结果观察组子宫动脉及脐动脉多普勒血流频谱RI、PI、S/D指标均明显高于对照组(子宫动脉RI:0.60±0.21 vs 0.48±0.18;PI:1.22±0.31 vs 0.78±0.28;S/D:3.32±0.42 vs 2.78±0.38。脐动脉RI:0.71±0.18 vs 0.52±0.09;PI:1.30±0.28 vs 0.69±0.19;S/D:4.12±0.37 vs 2.80±0.27)。观察组胎儿生长发育受限,与对照组比较,差异均有统计学意义(P 0.05)。观察组新生儿1 min Apgar评分7分比例和5 min Apgar评分7分比例均高于对照组(46%vs 10%,24%vs 4%),差异有显著统计学意义(P 0.01)。观察组中子宫动脉和脐动脉高RI组孕周均明显短于低RI组;子宫动脉和脐动脉高RI组产后住院时间均明显长于低RI组[子宫动脉,(12±4) d vs (8±3) d。脐动脉,(11±5) d vs (7±4) d];子宫动脉和脐动脉高RI组行剖宫产的比例均明显多于低RI组(子宫动脉,51.4%vs 20.0%;脐动脉,54.1%vs 30.8%),差异有统计学意义(P 0.05)。结论子宫动脉多普勒血流频谱指标对预测HDCP孕妇妊娠结局具有一定的临床应用价值。     

彩色多普勒检测子宫动脉预测妊高征的价值研究

目的探讨彩色多普勒检测子宫动脉预测妊娠高血压综合征（妊高征）的价值及临床意义。方法应用彩色多普勒超声对587例20～24周妊娠妇女的子宫动脉进行检测,通过观察追踪随访孕妇至分娩,根据是否出现高血压,把检测20～24周妊娠妇女的子宫动脉参数分为两组：正常组（560例）和高危组（27例）,进行对照研究,对比分析两组受检者子宫动脉血流动力学变化及声像图表现。结果①高危组子宫动脉收缩期峰值血流速度（Vd）较正常组快,舒张期最小血流速度（Vs）和平均血流速度（Vm）减慢（P〈0.01）,高危组子宫动脉阻力指数（RI）、搏动指数（PI）和收缩期峰值血流速度/舒张期最小血流速度（S/D）比正常组高（P〈0.01）,②高危组子宫动脉多普勒频谱表现典型者出现舒张早期＂V＂切迹。结论高危组患者子宫动脉血流动力学和多普勒频谱形态与正常组妊娠妇女有明显的不同,常规定期监测20～24周妊娠妇女子宫动脉血流动力学变化及多普勒频谱形态,对早期发现和治疗妊高征,保障母婴健康具有极其重要的意义。     

子痫前期患者外周及胎盘血循环中瘦素水平的比较

目的探讨妊娠期高血压疾病子痫前期患者血中瘦素水平的变化,及胎盘在这一变化中的作用.方法行剖宫产时,取孕妇肘前静脉及胎盘附着部位子宫静脉血.其中妊娠期高血压疾病子痫前期患者(研究组)15例,正常妊娠妇女(对照组)20例.应用放射免疫分析法测定血清瘦素水平.结果研究组外周血瘦素水平为23.29±3.32μg/L,对照组为13.87±1.24μg/L,两组比较差异有极显著性(P<0.01).研究组子宫静脉血瘦素水平为16.44±2.23μg/L,对照组为11.2±0.94μg/L,两组比较有显著性(P<0.05).研究组外周血和子宫静脉血比较有极显著性(P<0.01).对照组外周血和子宫静脉血比较有极显著性(P<0.01).结论妊娠期高血压疾病子痫前期患者外周血瘦素水平高于正常妊娠,提示瘦素可能参与妊娠期高血压疾病的发病.妊娠期高血压疾病子痫前期患者子宫静脉血瘦素水平高于正常妊娠,提示妊娠期高血压疾病患者胎盘中瘦素的合成增加.妊娠期高血压疾病子痫前期患者及正常妊娠孕妇外周血瘦素水平均高于子宫静脉血,提示胎盘只是正常妊娠孕妇及妊娠期高血压疾病患者血中瘦素增加来源之一.     

孕中期超声监测子宫动脉血流动力学参数及平均动脉压对妊娠期高血压的预测价值探讨

目的:探究孕中期超声监测子宫动脉血流动力学参数及平均动脉压对妊娠期高血压的预测价值.方法:选取我科2019年2月至2021年5月期间收治的75例妊娠期高血压疾病孕妇为观察组,同期75例正常孕妇作为对照组,均于孕中期(孕28～32 w)应用多普勒超声监测子宫动脉参数及平均动脉压,对比两组子宫动脉血流动力学参数、平均动脉压(Mean arterial pressure,MAP)、胎儿脐动脉血流动力学参数、母婴结局.采用受试者工作特征曲线(Receiver operating characteristic curve,ROC)分析MAP、子宫动脉血流动力学参数及胎儿脐动脉血流动力学参数对妊娠期高血压孕妇的相关性,及对母婴结局的影响.结果:观察组子宫动脉搏动指数(Pulsatility index,PI)、阻力指数(Resistive index,RI)、收缩压最大血流速度与舒张末期最大血流速度比值(Maximum systolic blood flow velocity/Maximal end-diastolic flow velocity,S/D)、MAP、胎儿脐动脉PI、RI、S/D、早产率、新生儿窒息发生率均高于对照组,新生儿体质量、Apgar评分低于对照组(P＜0.05).经ROC分析得知,子宫动脉PI、RI、S/D和MAP诊断妊娠期高血压疾病的AUC分别为0.984、0.956、0.820、0.929,脐动脉PI、RI、S/D诊断妊娠期高血压疾病的AUC分别为0.989、0.824、0.820,均具有较高的特异度和敏感度.结论:孕中期超声监测子宫动脉、胎儿脐动脉血流动力学参数联合MAP利于对筛查妊娠期高血压.     

孕中期检测肱动脉血管内皮功能在预测妊娠期高血压疾病中的价值

目的探讨孕中期检测肱动脉血管内皮功能在预测妊娠期高血压疾病中的价值。方法对260例孕中期孕妇用高分辨率超声行肱动脉内皮依赖性舒张功能（FMD）并随访其妊娠结局分为妊娠期高血压疾病组（高血压组）和正常组。结果260例中34例孕晚期发生妊娠期高血压疾病（高血压组）,而226例未发生妊娠期高血压疾病（正常组）,高血压组孕中期FMD显著低于正常组,差异有显著性（P〈0.01）。重度子痫前期组FMD显著低于轻度子痫前期组,差异有显著性（P〈0.01）。结论妊娠期高血压疾病虽然在孕中期血压正常,但已存在肱动脉内皮依赖性舒张功能减低,可被高分辨超声检测。     

sICAM-1、U-ALB在妊娠期高血压疾病早期肾损伤中的变化及相关性研究

目的探讨妊娠期高血压疾病早期肾损伤中尿微量白蛋白(U-ALB)与可溶性细胞间粘附因子-1水平变化及相关性分析。方法测定正常妊娠组、妊娠期高血压组U-ALB含量;测定正常未孕组、正常妊娠组、妊娠期高血压组、子痫前期组4组(孕32-35周)sIACM-1值;所测值进行组间比较并对sIACM-1、U-ALB进行相关性分析。结果妊娠期高血压患者U-ALB阳性率(60.00%)明显高于正常妊娠组(10.00%),P<0.01;sIACM-1正常妊娠组高于未孕组,P<0.05;与正常妊娠组比较,妊娠期高血压组高于正常妊娠组,P<0.05;子痫前期组明显高于正常妊娠组,P<0.01;与妊娠高血压组比较P<0.05。妊娠期高血压组sIACM-1与U-ALB相关性分析,相关系数(r)为0.723;P值<0.01。结论 U-ALB、sIACM-1在妊娠期高血压疾病早期肾损伤中含量明显增高,两者之间呈正相关。     

脐动脉超声血流、MMP-9、PLGF检测在评估重度子痫前期患者妊娠结局中的应用

目的 分析脐动脉超声血流、基质金属蛋白酶-9(MMP-9)、胎盘生长因子(PLGF)检测对重度子痫前期患者妊娠结局的评估作用.方法 回顾性分析本院2015年6月至2017年1月住院分娩的142例重度子痫前期患者围产儿相关资料,根据妊娠结局将其分为围产儿不良结局组与非不良结局组,比较两组出生孕周、出生体重、胎盘重量、脐动脉超声血流监测指标、MMP-9及PLGF水平.结果 围产儿不良结局发生率29.58％;围产儿不良结局组出生孕周、出生体重、胎盘重量、胎盘MMP-9、PLGF表达水平均显著小于非不良结局组;脐动脉收缩期、舒张期血流比值(UA-S/D)、UA搏动指数(UA-PI)、UA阻力指数(UA-RI)均显著大于非不良结局组,差异有统计学意义(P＜0.05);Spearman相关分析显示出生孕周与出生体重、胎盘重量、MMP-9 、PLGF、UA-S/D均显著相关(P＜0.05),MMP-9与PLGF表达正相关,与UA-S/D负相关(P ＜0.01);PLGF与UA-S/D负相关(P＜0.01).结论 重度子痫前期患者围产儿不良结局发生率较高,胎盘MMP-9、PLGF水平降低,脐动脉超声血流指标异常与围产儿不良结局密切相关.     

子宫动脉超声多普勒血流监测在妊娠期高血压管理中的应用

目的探究分析在妊娠期高血压管理过程中采用子宫动脉超声多普勒血流监测的临床应用价值。方法随机选取80例妊娠期高血压患者作为观察组;选择同期80例正常妊娠妇女作为对照组。监测子宫动脉超声多普勒实施血流,并进行分析对比。结果血流监测过程中的阻力指数、收缩-舒张流速比值以及搏动指数方面,观察组均明显高于对照组(P0.05),具有统计学意义。产妇以及新生儿的并发症发生率方面,观察组明显的高于对照组(P0.05),具有统计学意义。结论对于妊娠期高血压管理过程中采用子宫动脉超声多普勒实施血流监测,可明确患者的血流指标异常情况,从而在妊娠早期及时的采取措施进行干预处理,从而改善产妇以及新生儿的结局,提高我国新生儿的出生质量,值得临床推广应用。     

妊娠期高血压疾病中血清可溶性Endoglin水平变化的研究

目的检测正常妊娠和妊娠期高血压疾病患者血清中Endoglin的水平,探究其与妊娠期高血压疾病的发病关系及意义。方法采用酶联免疫吸附双抗体夹心法（ELISA）检测44例妊娠期高血压疾病患者（妊娠期高血压疾病组,其中妊娠期高血压15例、轻度子痫前期14例、重度子痫前期15例）及16例正常晚期妊娠妇女（对照组）,22例正常中期妊娠妇女血清中Endoglin水平。结果妊娠期高血压疾病组血清Endoglin浓度为（2.86±2.15）ng/ml,正常晚期妊娠组为（1.14＋0.46）ng/ml,两组比较差异有统计学意义（P〈0.05）。妊娠期高血压、轻度子痫前期、重度子痫前期患者血清中可溶性Endoglin水平逐渐升高[分别为（1.68±0.78）ng/ml,（2.49±1.10）ng/ml,（4.44±2.94）ng/ml],各组间差异有统计学意义（P〈0.05）,且有随孕周增加而逐渐增加的趋势。正常中期妊娠组血清中Endoglin浓度为（0.83±0.32）ng/ml,与正常晚期妊娠组比较差异有统计学意义。结论血清Endoglin水平升高可能与妊娠期高血压疾病的发病及病情发展有关,并有可能成为疾病的预测指标。     

可溶性CD105在早发型子痫前期患者中的表达

目的探讨早发型子痫前期患者可溶性CD105（sCD105）表达的变化和意义。方法选择对照组和早发型子痫前期组各30例,其中32周之前发病患者13例,32周之后发病患者17例;选择在本院行产前筛查后发展为早发型子痫前期的妊娠妇女和对照组各30例。采用酶联免疫吸附分析法（ELISA）测定各组血清sCD105水平。结果对照组和早发型子痫前期组血清sCD105水平的中位数分别为13.45ng/ml和36.35ng/ml,差异有统计学意义（P=0.000）。32周之前发病组和32周之后发病组血清sCD105水平的中位数分别为48.76ng/ml和30.39ng/ml,差异有统计学意义（P=0.02）。对照组和早发型子痫前期组妊娠中期sCD105水平的中位数分别为5.20ng/ml和7.51ng/ml,差异有统计学意义（P=0.003）。32周之前发病组和32周之后发病组妊娠中期血清sCD105水平的中位数分别为8.43ng/ml和5.41ng/ml,差异有统计学意义（P=0.011）。结沦早发型子痫前期患者血清sCD105水平显著增高,发生早发型子痫前期的妊娠中期孕妇的sCD105也显著增高,发病孕周越早血清sCD105水平上升更显著。     

First trimester uterine, placental and yolk sac haemodynamics in pre-eclampsia and preterm labour

BACKGROUND: We hypothesized that impaired trophoblast invasion leads to umbilicoplacental blood flow disturbances that could be detected by Doppler ultrasonography during the first trimester of the pregnancy. METHODS: After successful fresh IVF or ICSI programme, 41 of 47 enrolled subjects were followed up every 1-2 weeks between weeks 6 and 11 of gestation. Ten patients who later developed pre-eclampsia and/or preterm labour formed the study group and the control group consisted of 31 uncomplicated IVF/ICSI pregnancies. Doppler parameters of uterine, spiral, intraplacental, chorionic, umbilical and yolk sac haemodynamics were assessed. RESULTS: At the week 8, the study group demonstrated higher (P < 0.05) maternal intraplacental resistance indices (RI) than the control group. A week later, yolk sac artery RI and umbilical artery mean velocity (V(mean)) in the study group were lower (P < 0.05) compared to the control group. In late first trimester, increased (P < 0.01) velocities and RI were observed in chorionic arteries of the study group. During early pregnancy, no difference in uterine and spiral artery haemodynamics and in umbilical artery pulsatility index (PI) values was observed between the groups. CONCLUSIONS: Uterine and spiral artery RI and umbilical artery PI are unable to detect placental vascular disturbances during early pregnancy. Elevated intraplacental RI indicates increased maternal intraplacental impedance as early as week 8 of gestation. Decreased yolk sac artery RI and umbilical artery V(mean) in the study group at week 9 of gestation were speculated to indicate hampered transition of blood supply from yolk sac to umbilical circulation, underlining the emphasized role of yolk sac function for the maintenance of pregnancy.     

Changes of plasma fibronectin levels in pregnancy induced hypertension

A number of laboratory tests are available for evaluation of hypertension in pregnancy. These tests can be used to either predict and/or prognosticate preeclampsia and other hypertensive disorders of pregnancy. The aim of this study was to evaluate alterations in fibronectin homeostasis in normotensive pregnancy and in hypertensive disorders of pregnancy subclassified into chronic hypertension, preeclampsia superimposed on chronic hypertension, and pregnancy induced hypertension. A prospective, longitudinal study was conducted in 115 pregnant women aged 20-39 years, divided into four groups: normotensive (n = 40), chronic hypertension (n = 18), preeclampsia superimposed on chronic hypertension (n = 20), and pregnancy induced hypertension (n = 37). Plasma concentrations of fibronectin were measured by using single radial immunodiffusion assay (RIA) in the 8th, 18th, 23rd, 28th, 32nd and 36th week of gestation. Plasma fibronectin concentration showed no significant changes in normotensive pregnancy, but was significantly elevated in the third trimester in women destined to become preeclamptic or with preeclampsia in whom it reached a mean (+/- SD) of 0.40 +/- 0.09 g/L in the 36th week of gestation. In the groups with preeclampsia superimposed on chronic hypertension and with pregnancy induced hypertension, there was a significant difference between plasma fibronectin concentrations in 32nd (p < 0.01) and 36th (p < 0.001) week of gestation compared with either other levels in the respective group (in the 8th, 18th, 23rd and 28th week of gestation) or those recorded in other groups in the same period of pregnancy. These results suggested that the measurement of plasma fibronectin might be of diagnostic value in preeclampsia but could not be considered a useful predictor for preeclampsia.     

Vascular nature of pre-eclampsia

The etiology of preeclampsia is not known. There are some partial well established mechanisms like decreased refractoriness to vasoactive agents, reduced placental and artery wall production of prostacyclin, increased production of thromboxane, and luminal trophoblast invasion of spiral arteries. We propose that it would be of primary importance to elucidate the role of uterine artery as an early pathway of preeclamptic disease. Defective hypertrophy of the uterine artery during pregnancy may give way to stretching, distortion and narrowing of the arterial lumen. The rate of growth of the pregnant uterus may not be synchronous with the expected hypertrophy of the uterine artery, thus jeopardizing the blood flow in its branches, such as arcuate and spiral arteries. This disturbance may cause non invasion by the trophoblast of the spiral arteries and subsequent placental hypoxia. Exaggerated uterine volume, like multiple pregnancy, hydatiform mole and hydramnios, may facilitate preeclampsia by demanding more blood supply from an inadequate uterine artery. The prevalence of preeclampsia in primiparous women can be understood, since additional pregnancies will find the uterine arteries already elongated, at least to some extent.     

Preeclampsia and health risks later in life: an immunological link

Pregnancy represents a period of physiological stress, and although this stress is experienced for a very modest portion of life, it is now recognized as a window to women’s future health, often by unmasking predispositions to conditions that only become symptomatic later in life. In normal pregnancy, the mother experiences mild metabolic syndrome-like condition through week 20 of gestation. A pronounced phenotype of metabolic syndrome may program pregnancy complications such as preeclampsia. Preeclampsia is a serious complication with a myriad of manifestations for mother and offspring. This pregnancy syndrome is a polygenic disease and has been now linked to higher incidence of cardiovascular disease, diabetes, and several other disorders associated with vulnerable organs. Furthermore, the offspring born to preeclamptic mothers also exhibit an elevated risk of cardiovascular disease, stroke, and mental disorders during adulthood. This suggests that preeclampsia not only exposes the mother and the fetus to complications during pregnancy but also programs chronic diseases in later life. The etiology of preeclampsia is thought to be primarily associated with poor placentation and entails excessive maternal inflammation and endothelial dysfunction. It is well established now that the maternal immune system and the placenta are involved in a highly choreographed cross-talk that underlies adequate spiral artery remodeling required for uteroplacental perfusion and free flow of nutrients to the fetus. Since normal pregnancy is associated with a sequence of events represented by temporal events of inflammation (implantation), anti-inflammation (gestation), and inflammation (parturition), it is quite possible that unscheduled alterations in these regulatory responses may lead to pathologic consequences. Although it is not clear whether immunological alterations occur early in pregnancy, it is proposed that dysregulated systemic and placental immunity contribute to impaired angiogenesis and the onset of preeclampsia. This review will focus on important aspects of the immune system that coordinate with placental dysfunction to program preeclampsia and influence health in later life.     

Bcl—2蛋白在正常、妊高征及胎儿宫内发育迟缓胎盘中的表达

目的 通过检测Bcl-2蛋白在正常各期胎盘、妊高征胎盘和胎儿宫内发育迟缓胎盘中的表达，探讨Bcl-2蛋白在胎盘的发育过程中的功能及妊高征和胎儿宫内发育迟缓的病理机制。方法 取正常的8－10周、20－22周、足月胎盘以及妊高征和胎儿宫内发育迟结的胎盘组织固定，石蜡包坦，用ABC法抗Bcl-2免疫组织化学染色，光镜观察。结果 正常早孕绒毛合体细胞滋养怪、细胞滋养层细胞核、绒毛吵轴细胞阳性，细胞滋养层的胞质、绒毛中轴基质阴性。正常中期和足月胎盘滋养层细胞、血管内皮细胞阳性。与正常足月胎盘相比，妊高征、台儿宫内发育迟缓胎盘几科不着色。结论 Bcl-2蛋白在正常各期胎盘中均有表达，而在妊高征和胎儿宫内发育迟缓胎盘几乎不表达，Bcl-2蛋白表达异常与妊高征与胎儿宫内发育迟缓的发病机制有关。     

血清和肽素联合子宫动脉血流参数对子痫前期的早期筛查价值分析

目的探讨血清和肽素(CPT)联合子宫动脉血流参数对子痫前期(PE)的早期筛查价值。方法前瞻性随机选取2018年4月至2019年5月期间在我院行孕检的孕妇504例作为研究对象,所有孕妇均随访至分娩,并根据在孕期是否发生PE进行分组,将其中发生PE的38例孕妇纳入PE组,其余466例孕妇纳入对照组。于孕20~24周时采用酶联免疫吸附法检测所有研究对象血清CPT的水平,采用彩色多普勒超声诊断仪检测血流搏动指数(PI)、子宫动脉收缩期与舒张期血流速度比值(S/D)、阻力指数(RI)。结果PE组的S/D、PI、RI及血清CPT均明显高于对照组,差异均有统计学意义(P<0.05),经Pearson分析显示,PE患者血清CPT与舒张压、收缩压、S/D、PI、RI均呈正相关(P<0.05),ROC曲线分析显示,血清CPT对PE的预测价值较高,曲线下面积为0.797,而各项子宫动脉血流参数对PE亦有一定的预测价值,其中PI的预测价值最高,曲线下面积为0.813。血清CPT联合PI可明显提高预测价值,其灵敏度为84.21%、特异性为83.91%,约登指数为0.681。结论血清CPT和各项子宫动脉血流参数对PE的早期筛查有一定的临床应用价值,且血清CPT联合PI可明显提高预测价值。     

The relationship between aldosterone to renin ratio and RI value of the uterine artery in the preeclamptic patient vs. normal pregnancy

PURPOSE: Plasma levels of renin, angiotensin II and aldosterone are increased during normal pregnancy. However, these values in preeclampsia are decreased to nearly that of a nonpregnant subject, and vascular sensitivity to angiotensin II is increased. In preeclampsia, aldosterone is decreased less than rennin. Therefore current studies were undertaken to determine the relationship between aldosterone to renin ratio (ARR) and uterine artery perfusion via RI value. MATERIALS AND METHODS: In this study, the relationship between plasma aldosterone and renin concentration was determined in 27 preeclamptic women and 50 normal pregnant women, whose gestational weeks were matched. The aldosterone to renin ratio was calculated and compared between the two groups. Doppler velocimetry of the uterine artery, which was used to calculate resistance index (RI), was performed on all subjects. The relationship between ARR and RI value was reviewed. RESULTS: In the preeclampsia group, RI value of the uterine artery was significantly higher than that of normal pregnant women. Both plasma renin and aldosterone concentrations were lower in the preeclampsia group. However, the ratio of these two parameters was significantly higher (38.3 vs. 16.1, p < 0.001); the greater ARR, the higher the RI of the uterine artery (r2 = 0.053, p = 0.048). CONCLUSION: This study demonstrates that a high aldosterone to renin ratio may have a negative effect on perfusion of the uterine artery and play an important role in the pathophysiology of preeclampsia.     

胎盘中HGF和IGF-1的表达及与妊娠期高血压疾病发病的关系

目的探讨肝细胞生长因子（Hepatocyte growth factor,HGF）与胰岛素样生长因子-1（Insu lin like growth fac-tor-1,IGF-1）在正常晚孕妇女及妊娠期高血压疾病患者胎盘组织中的表达以及在妊娠期高血压疾病发病中的作用。方法采用免疫组织学方法检测62例妊娠期高血压疾病患者（妊娠期高血压疾病组,其中妊娠期高血压21例。轻度子痫前期19例,重度子痫前期22例）及20例正常晚孕妇女（对照组）的胎盘组织中HGF及IGF-1的表达强度,同时HE染色,选取5个高倍视野,计数绒毛血管数。结果（1）HGF主要表达于绒毛间质细胞胞浆,蜕膜细胞有少量表达。重度子痫前期患者胎盘绒毛间质细胞HGF的表达强度显著低于对照组（H=8.548,P=0.003）,而妊娠期高血压及轻度子痫前期患者与对照组比较,差异无显著性（H=0.018,P=0.892;H=3.739,P=0.053）;（2）IGF-1主要表达于胎盘合体滋养细胞、细胞滋养细胞及蜕膜细胞的胞膜及胞质中。胎盘组织中IGF-1的表达,轻、重度子痫前期患者明显低于对照组（H=4.948,P=0.026;H=15.245,P=0.001）而妊娠期高血压与对照组比较,差异无显著性（H=0.118,P=0.731）;（3）不同程度妊娠期高血压疾病组胎盘绒毛血管密度均较对照组减少,重度子痫前期患者胎盘绒毛血管密度为（59.69±3.86）个/×400,与对照组（67.67±4.55）个/×400相比,差异有显著性（P〈0.01）;（4）相关性分析显示两组孕妇胎盘组织中HGF、IGF-1表达强度分别与绒毛血管密度、新生儿出生体重呈正相关（r=0.695,r=0.386;r=0.270,r=0.782）;对照组及妊娠期高血压患者胎盘组织中HGF与IGF-1的表达强度呈强正相关性（r=0.950,P〈0.01;r=0.864,P〈0.01）。结论胎盘组织中HGF、IGF-1分泌减少与妊娠期高血压疾病发病及病情发展有关,IGF-1可能参与了HGF水平的调节。