妊娠晚期雌、孕激素及其受体表达与压力性尿失禁的关系

目的研究妊娠晚期血清雌、孕激素水平及盆底组织雌、孕激素受体表达与压力性尿失禁(SUI)的关系。方法将阴道分娩的初产妇女71例分为SUI组(n=33)和非SUI组(n=38),于孕36～40周检测血清雌二醇(E2)、雌三醇(E3)、孕酮(P)水平。SUI组中的20例和非SUI组中的31例于胎儿娩出后,取会阴侧切口顶端最深部肌肉组织行病理组织学和超微结构观察,选取3例因外阴癌、直肠癌行手术治疗的女性非妊娠患者作为对照。采用免疫组织化学方法检测盆底组织雌激素受体(ER)和孕激素受体(PR)表达。结果 SUI组与非SUI组孕妇血清E2和E3水平比较,差异均无统计学意义(P>0.05);SUI组孕妇血清P的质量浓度小于非SUI组[(184.7±48.2)μg/L和(223.2±93.5)μg/L](P<0.05)。病理组织学及超微结构观察均发现,妊娠晚期妇女会阴深部平滑肌细胞有不同程度的空泡变性,肌纤维变细,细胞间质水肿。非SUI组平滑肌细胞ER和PR的强阳性表达率均显著高于SUI组(P<0.05);盆底横纹肌细胞不表达ER和PR。结论雌激素和孕激素对妊娠期盆底结构和功能均起到保护作用。

Correlation of serum estrogen and progesterone levels and expression of estrogen and progesterone receptors with stress urinary incontinence in late pregnancy

Objective To investigate the correlation of serum estrogen and progesterone levels and expression of estrogen and progesterone receptors in pelvic floor tissues with stress urinary incontinence(SUI) in late pregnancy. MethodsSeventy-one pregnant primiparas undergoing vaginal delivery were divided into SUI group(n=33) and non-SUI group(n=38),and serum levels of estradiol(E2),estriol(E3) and progesterone(P) were detected at gestational week 36 to 40.Muscular tissue samples were obtained from the top of latera...