当前位置:主页 > 医学论文 > 妇产科论文 >

转录因子AP-2α、E-钙粘蛋白、MMP-9在重度子痫前期胎盘中的表达及意义

发布时间:2018-04-05 02:24

  本文选题:重度子痫前期 切入点:绒毛外滋养细胞(EVT) 出处:《河北医科大学》2014年硕士论文


【摘要】:目的:重度子痫前期是一种妊娠期特有的严重危害母儿健康的疾病。以34周为界,将重度子痫前期分为早发型、晚发型。子痫前期发病机制尚不明确,,在众多学说中滋养层浅植入学说得到广泛认可:绒毛外滋养细胞(extravillous trophoblasts,EVT)迁移和侵袭能力的降低导致子宫螺旋动脉重塑障碍,形成缺陷胎盘,引发子痫前期。转录因子激活蛋白-2(activator protein-2,AP-2)是一类可调控细胞增殖、分化、胚胎发育的转录因子,在肿瘤细胞转移表型的获得上具有重要作用。研究报道AP-2α可通过转录调控E-钙粘蛋白、金属蛋白酶MMP-9的表达抑制肿瘤细胞的迁移、侵袭行为,这些蛋白均参与EVT的侵袭过程。目前AP-2α、E-钙粘蛋白和MMP-9在子痫前期发病机制中的综合作用尚未阐明,本研究旨在通过检测早发型重度子痫前期组、晚发型重度痫前期组和正常妊娠组胎盘组织中AP-2α、E-钙粘蛋白、MMP-9的蛋白表达变化,探讨三者之间的关联及其在重度子痫前期发病机制中的作用。 方法:选择剖宫产分娩的孕妇60例,其中20例为早发型重度子痫前期组,20例为晚发型重度子痫前期组,20例同期住院分娩的孕晚期孕妇为正常妊娠组。角蛋白7用于鉴定蜕膜中的EVT,应用免疫组织化学方法检测AP-2α、E-钙粘蛋白和MMP-9在绒毛滋养细胞和EVT中的表达,并采用HSCORE评分对染色强度进行半定量分析,应用Western blot测定三组胎盘组织中AP-2α、E-钙粘蛋白和MMP-9的蛋白表达量。采用SPSS16.0进行统计学分析。 结果: 1临床资料比较:三组孕妇年龄无统计学差异;早发型重度子痫组的孕龄明显短于晚发型重度子痫前期及正常妊娠组,晚发组与正常组比较无显著差异;三组的胎盘重量、新生儿出生体重,两两比较均有显著差异。 2免疫组化结果显示,底蜕膜中存在绒毛外滋养细胞。AP-2α主要表达于细胞核,E-钙粘蛋白主要表达于细胞膜,MMP-9主要表达于细胞浆。在早发组、晚发组和正常组的EVT中:AP-2α的HSCORE评分分别为(2.28±0.39)、(1.86±0.37)、(1.48±0.29),两两比较差异均有统计学意义(P0.05);E-钙粘蛋白的评分分别为(2.24±0.22)、(1.99±0.24)、(1.82±0.22),两两比较差异均有统计学意义(P0.05);MMP-9评分分别为(1.75±0.06)、(2.00±0.06)、(2.13±0.07),两两比较差异均有统计学意义(P0.05)。在早发组、晚发组和正常组的绒毛滋养细胞中:AP-2α的HSCORE评分分别为(3.02±0.06)、(2.05±0.05)、(1.49±0.06),两两比较差异均有统计学意义(P0.05);E-钙粘蛋白的评分分别为(2.89±0.33)、(2.64±0.44)、(2.20±0.39),两两比较差异均有统计学意义(P0.05);MMP-9评分分别为(1.60±0.13)、(1.72±0.15)、(2.33±0.17),两两比较差异均有统计学意义(P0.05)。 3Western blot结果显示:在早发组、晚发组和正常组胎盘组织中:AP-2α相对表达量分别为(0.79±0.06)、(0.66±0.08)、(0.53±0.10),两两比较差异均有统计学意义(P0.05);E-钙粘蛋白相对表达量分别为(1.71±0.05)、(1.23±0.08)、(0.61±0.07),两两比较差异均有统计学意义(P0.05);MMP-9相对表达量分别为(0.18±0.03)、(0.22±0.04)、(0.25±0.05),两两比较差异均有统计学意义(P0.05)。相关性分析显示:AP-2α表达量与E-钙粘蛋白正相关,与MMP-9负相关。 结论: 1与正常组比较,早发型和晚发型重度子痫前期组胎盘的绒毛滋养细胞及EVT中AP-2α、E-钙粘蛋白表达均增加而MMP-9表达减少。说明重度子痫前期患者的胎盘存在AP-2α、E-钙粘蛋白和MMP-9表达异常,三者可能通过影响EVT侵袭能力,导致子宫螺旋动脉重塑障碍参与重度子痫前期的发病过程。 2与晚发型重度子痫前期组比较,早发型重度子痫前期组胎盘的绒毛滋养细胞及EVT中AP-2α、E-钙粘蛋白表达均增加而MMP-9表达减少。早发型、晚发型重度子痫前期可能均存在EVT侵袭力异常、子宫螺旋动脉重塑障碍,但严重程度不同。 3AP-2α表达量与E-钙粘蛋白正相关,与MMP-9负相关,推测AP-2α可能通过调节E-钙粘蛋白与MMP-9的表达抑制EVT侵袭力,参与重度子痫前期的发病。 4重度子痫前期可能存在胎盘绒毛滋养细胞增殖、分化障碍。
[Abstract]:Objective: preeclampsia is a pregnancy specific disease seriously endangering the health of mother and fetus. In 34 weeks, will be divided into early onset severe preeclampsia and late onset preeclampsia. The pathogenesis is not clear, in many theories of shallow implantation theory has been widely recognized by trophoblast: extravillous trophoblast cells (extravillous trophoblasts, EVT) of uterine spiral artery remodeling leads to reduced barriers to migration and invasion, the formation of defects in the placenta, lead to pre eclampsia. Transcription factor activator protein -2 (activator protein-2 AP-2) is a kind of regulating cell proliferation, differentiation, embryonic transcription factor, which plays an important role in the migration of tumor cell phenotype. It was reported that AP-2 alpha can be through transcriptional regulation of E- cadherin, expression of metalloproteinase MMP-9 inhibits the migration and invasion of tumor cells, these proteins are involved in the invasion of EVT. At present, AP-2 alpha, E- cadherin and MMP-9 integrated role in the pathogenesis of preeclampsia has not been elucidated. This study was aimed to detect the early onset of severe preeclampsia group, AP-2 alpha, late onset severe preeclampsia group and normal pregnancy group in the placenta of E- cadherin, the expression of MMP-9 protein and explore the Association between the three and its role in the pathogenesis of severe preeclampsia.
Methods: 60 cases of cesarean section in pregnant women, including 20 cases of early onset severe preeclampsia group, 20 cases of late onset severe preeclampsia group, 20 cases of hospitalized primiparas'birth for normal pregnancy group. For the identification of keratin 7 in the decidua of EVT, immunohistochemical detection of AP-2 alpha, E- expression of E-cadherin and MMP-9 in trophoblast cells and EVT, and the HSCORE score of staining intensity of semi quantitative analysis of application of Western blot AP-2 was measured in placental tissues of the three groups, the expression of E- cadherin and MMP-9 proteins. Using SPSS16.0 for statistical analysis.
Result锛

本文编号:1712785

资料下载
论文发表

本文链接:https://www.wllwen.com/yixuelunwen/fuchankeerkelunwen/1712785.html


Copyright(c)文论论文网All Rights Reserved | 网站地图 |

版权申明:资料由用户407df***提供,本站仅收录摘要或目录,作者需要删除请E-mail邮箱bigeng88@qq.com