Improving placental block morphology using microwave-assisted fixation

ABSTRACT

The histopathologic assessment of placenta is often marred by poorly fixed and processed sections. An audit conducted in the department resulted in 21% of placental blocks showing features of poor processing. A microwave-assisted fixation procedure was introduced using the Micromed KOS microwave oven (ABACUS-ALS, Brisbane, Australia) for 2 h at 45°C. This resulted in an improvement in the quality of the sections with a zero failure rate on a subsequent audit.     

磁共振成像孕妇胎盘检查的护理方案

目的建立孕妇胎盘MRI检查的护理措施,以提高孕妇完成MRI检查的依从性和有效性。方法其中80例孕妇采取普通检查程序(为对照组),包括预约-准备-检查。80例孕妇采取改进的护理方案(为实验组),包括预约-宣教-答疑-准备-检查。数据资料进行描述性统计分析。结果实验组孕妇的检查时间明显少于对照组,均一次性成功完成检查。对照组中的6例出现喘憋,呕吐等症状,在护士安抚干预后,于第二次配合完成检查。2例因严重的恐惧幽闭症未完成MRI检查。结论健全的护理方案对孕妇MRI检查的依从性和有效性具有重要作用。     

Meta分析比较超声和MRI对胎盘植入的诊断价值

目的应用Meta分析比较超声（us）和MRI对胎盘植入的诊断价值。方法通过电子文献检索系统检索在中吲期刊网（CNKI）和PubMed上发表的有关US和MRI诊断胎盘植入的中英文文献．并对文献进行评价及筛选。应用Meta—Dis（1．4软件对纳入的试验结果进行分析。结果US诊断胎盘植入共纳入2400例．加权灵敏度为79％．加权特异度为95％．加权诊断比值比（DOR）为65．15,受试者工作特性（SROC）曲线下面积（AUC）为0．9495：MRI诊断胎盘植入共纳入386例．加权灵敏度为83％,加权特异度为88％,加权DOR为22．69,SROC曲线下AUC为0．8955。结论Meta分析表明US对胎盘槽入的诊断价信与MRT相比蒡异无统计学膏义     

During Embryogenesis,Esrp1 Expression Is Restricted to a Subset of Epithelial Cells and Is Associated With Splicing of a Number of Developmentally Important Genes

Background : Development of a mature organism from a single cell requires a series of important morphological changes, which is in part regulated by alternative splicing. In this article, we report the expression of Esrp1 during early mouse embryogenesis, a splicing factor implicated in epithelial to mesenchymal transitions. Results : By qRT‐PCR, we find higher expression of Esrp1 and Esrp2 in placenta compared to the embryos. We also find a correlation between the expression of Esrp1 and alternative splicing of several known target exons. Using in situ RNA hybridization we show that while Esrp1 expression is ubiquitous in embryonic day (E)6.5 mouse embryos, expression becomes restricted to the chorion and definitive endoderm starting at E7.5. Esrp1 expression was consistently restricted to a subset of epithelial cell types in developing embryos from E9.5 to E13.5. Conclusions : Our results suggest that Esrp1 could play an important role in the morphological changes underlying embryogenesis of the placenta and embryo. Developmental Dynamics 242:281–290, 2013. © 2012 Wiley Periodicals, Inc.     

超声检测胎儿脐动脉血流对预测帆状胎盘孕妇预后的价值

目的 超声检测胎儿脐动脉血流对预测帆状胎盘孕妇预后的价值.方法 95例单胎妊娠合并帆状胎盘孕妇,根据妊娠结局分为妊娠结局良好组51例和不良组44例;孕检正常的孕妇100例为对照组,应用脉冲多普勒获得胎儿脐动脉收缩末期峰值与舒张末期峰值的比值（S/D）,测量阻力指数.结果 妊娠结局不良组脐动脉S/D和阻力指数高于对照组及妊娠结局良好组 （P＜0.05）.随着胎儿脐动脉S/D增高,胎儿分娩周数提前,胎儿妊娠结局不良率增高.S/D＜3时,胎儿宫内情况良好;S/D为3～4时,胎儿预后不良率约29.4％,其中以轻度不良为主;S/D＞4时,胎儿预后不良率87.5％.结论 超声提示帆状胎盘时,胎儿脐动脉血流参数对监测胎儿宫内情况及预测胎儿妊娠结局具有一定的临床价值.     

Efficacy of Human Chorion Membrane Allograft for Recession Coverage: A Case Series

Background : Membranes of human placentas have been used in the field of medicine for skin grafts, treatment of burns, and ulcerated skin conditions with great success. The use of placenta allografts in dentistry is a more recent development, with the first commercial product being made available in 2008. The unique inherent biologic properties in placenta allografts enhance wound healing and may propagate regeneration. Methods: Ten healthy adult patients presenting with 21 Miller Class I gingival recession (GR) defects (isolated or adjacent multiple) were surgically treated with a modified coronally advanced flap and chorion membrane for root coverage. Clinical parameters measured at baseline, 3 months, and 6 months were probing depth, clinical attachment level, GR height, width of keratinized gingiva, and assessment of gingival biotype. Statistical analysis was performed to compare the treatment outcomes at the follow‐up intervals. Results: The results showed statistically significant (P <0.001) improvements in all clinical parameters at the 3‐ and 6‐month follow‐ups. The mean percentage of root coverage at the end of 6 months was 89.92% ± 15.59%, and 14 of 21 treated GR defects showed 100% root coverage. The gingival biotype also showed a thick biotype in nine sites that had an initial thin biotype. Conclusions: Fetal membranes possess distinctive properties that can be harnessed to promote periodontal healing. The chorion membrane covered by a modified coronally advanced flap is a new approach that has shown promising results in terms of root coverage, increased width of keratinized tissue, and thickness of the gingival biotype.