机构地区:[1]福建省妇幼保健院产科,福州350001 [2]福建医科大学协和临床医学院
出 处:《中华妇产科杂志》2012年第6期412-417,共6页Chinese Journal of Obstetrics and Gynecology
基 金:福建省自然科学基金(2012J01313)
摘 要:目的探讨孕妇血清游离脂肪酸(FFA)水平及胎盘线粒体氧化应激损伤程度变化在子痫前期发病中的作用。方法选择2010年8月-2011年5月于福建省妇幼保健院住院分娩的60例重度子痫前期孕妇,按发病时孕周不同分为早发型子痫前期组(发病时孕周〈34周)和晚发型子痫前期组(发病时孕周〉134周)各30例;另选同期健康晚期妊娠孕妇60例,也根据孕周不同分为对照1组(孕周〈34周)和对照2组(孕周≥34周)各30例。应用改良铜试剂比色法检测孕妇血清FFA水平;紫外比色法检测胎盘组织中谷胱甘肽过氧化物酶(GPX)活性、过氧化氢酶(CAT)活性、胎盘线粒体膜丙二醛(MDA)水平及线粒体通透转运孔(町孔)开放水平;应用超氧化物歧化酶(SOD)活性检测试剂盒检测胎盘组织中SOD活性的水平;实时荧光定量PCR技术检测胎盘线粒体DNA(mtDNA)的表达水平。结果(1)早发型及晚发型子痫前期组孕妇血清FFA的水平分别为(1.6±0.5)及(1.5±0.4)mmo]/L,对照1组及对照2组分别为(1.0±0.5)及(0.9±0.5)mmol/L,4组比较,差异有统计学意义(P〈0.05);但早发型与晚发型子痫前期组比较、对照1组与对照2组比较,差异均无统计学意义(P〉0.05)。(2)早发型及晚发型子痫前期组孕妇胎盘组织中GPX活性水平分别为(47±6)、(67±6)U/rag,均低于对照2组的(80±3)U/mg,分别比较,差异均有统计学意义(P〈0.05);早发型及晚发型子痫前期组孕妇胎盘组织中CAT活性水平分别为(19±5)、(20±4)U/rag,均低于对照2组的(55±3)U/mg,分别比较,差异均有统计学意义(P〈0.05);早发型及晚发型子痫前期组孕妇胎盘组织中SOD活性水平分别为(62±13)、(96±17)U/rag,均低于对照2组的(123±19)U/mg,分别比较,差异均有统计学意义(P〈0.Objective To investigate the relationships between concentrations of free fatty acid (FFA) in maternal serum and oxidative damage levels in placental mitoehondria and preeclampsia (PE). Methods A total of 60 women with PE and 60 normal pregnant women as control participated in this study. All were admitted to Fujian Maternity and Child Health Hospital for delivery from August 2010 to May 2011. Patients with PE were divided into early-onset group (n = 30, presented at 〈 34 weeks of gestation) and late-onset group (n --30, presented at ≥ 34 weeks of gestation) , with 30 normal pregnant women as early control group ( 〈 34 weeks of gestation) and 30 as late control group (≥34 weeks of gestation). Improved copper agent colorimetry was used to detect FFA in maternal serum. Ultraviolet colorimetry was used to detect glutathione peroxidase (GPX) and catalase (CAT) activity in maternal placenta and malondialdehyde (MDA) and permeability transition (PT) pore in placental mitochondria. Total superoxide dismutase (SOD) assay kit-WST was used to detect SOD activity in placenta. Real-time fluorescent quantitative PCR was used to detect mitochondrial DNA (mtDNA) expression in placenta. Results ( 1 ) Maternal serum FFA was ( 1.6 ± 0. 5 ) mmol/L in early-onset PE group and ( 1.5 ± 0. 4 ) mmol/L in late- onset PE group, significantly elevated as compared to ( 1.0 ± 0. 5 ) mmol/L in early control group and (0. 9±0. 5) mmol/L in late control group (P 〈 0. 05 ). However, no significant difference was found between early-onset and late-onset PE groups ( P 〉 0. 05 ). ( 2 ) The mean placental GPX, CAT and SOD activity were significantly decreased in the early-onset PE group [ (47 ± 6 ), ( 19 ± 5 ), (62 ± 13 ) U/mg ] and late-onset PE group [ (67±6), (20 ±4), (96 ± 17) U/mg] as compared to late control group [ (80 ± 3) , (55 ±3) , (123± 19) U/mg] , respectively (P 〈0. 05). (3) The mean pla
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