先天性心脏病肺动脉高压患者血中雌激素含量变化与机制

目的 探讨先天性心脏病(CHD)患者出现肺动脉高压(PAH)后雌激素变化及其与肺动脉压力的相关性,为PAH激素治疗提供理论依据,同时探讨雌激素发生变化的机制.方法 以右心导管测量的肺动脉压力为标准,选取36例肺动脉压力正常和108例合并PAH的左向右分流型CHD患者,分别设为对照组和PAH组,采用化学发光免疫分析法测定两组患者血清雌二醇、孕酮、泌乳素和卵泡刺激素(FSH)含量.结果 PAH组雌二醇、孕酮、泌乳素、FSH含量均明显高于对照组(P<0.05).多元回归分析显示,三种性激素的含量变化与左向右分流水平无相关性,而与性别、年龄、月经周期等生理因素以及肺动脉压力明显相关,相关系数分别为0.607、0.531和0.518.FSH与泌乳素和雌二醇呈正相关,相关系数分别为0.917(P=0.012)和0.759(P=0.000).结论 在CHD患者中,雌二醇含量随患者肺动脉压力升高而升高,表明雌激素对肺动脉压力具有重要的调节作用,但引起雌激素升高的调节靶点位于垂体或下丘脑而非性腺.

Change of estrogen in patients with pulmonary artery hypertension secondary to congenital heart disease

Objective To study the change of estrogen in patients with pulmonary artery hypertension (PAH) secondary to congenital heart disease (CHD). Methods A total of 144 patients with CHD including 36 patients with normal pulmonary arterial pressure as control group, and 108 with PAH were investigated as PAH group. Their pulmonary artery pressure was measured by right heart catheterization and the serum concentrations of estradiol, progesterone, prolactin and follicle stimulating hormone (FSH) were detected by chemiluminescence immunoassay. Results The serum concentrations of estradiol, progesterone, prolactin and FSH in PAH group were significantly higher than those in control group (P<0.05). Multiple regression analysis showed that the concentrations of estradiol, progesterone and prolactin were not correlated with the site of shunt but significantly correlated with physiologic factor including sex, age and menstrual cycle, and the level of mean pulmonary arterial pressure. The correlation coefficient of mean pulmonary arterial pressure to them was 0.607,0.531 and 0.518 respectively. The concentration of FSH was positively correlated with the prolactin and estradiol with a related coefficient of 0.917 (P=0.012) and 0.759 (P= 0.000). Conclusion The estrogen plays an important role in modification of the pulmonary arterial pressure in patients with CHD and PAH.