CIP2A在子宫内膜样腺癌中的表达及临床意义

目的:探究蛋白磷酸酶2A(CIP2A)在子宫内膜样腺癌中的表达情况及临床意义。方法:选取2011年1月至2014年3月行手术切除并经病理证实的50例子宫内膜样腺癌(EAC)及同期行门诊刮宫术获取的40例正常增生期子宫内膜(NE)组织标本。应用RT-PCR、Western blot法检测EAC和NE组织中CIP2A mRNA及蛋白水平，免疫组化法检测CIP2A阳性表达情况。分析CIP2A在EAC和NE组织中的表达差异及与子宫内膜样腺癌临床病理特征的关系。采用Kaplan-Meier法分析CIP2A不同表达水平对患者预后生存的影响，通过COX分析预后独立危险因素。结果:免疫组化染色显示:CIP2A在子宫内膜样腺癌中呈高表达，阳性着色定位于细胞浆和细胞核中，EAC组织中CIP2A阳性表达率显著高于NE组织(P＜0.01)。RT-PCR和Western blot检测显示EAC组织中CIP2A mRNA及蛋白表达水平高于NE组织(P＜0.01)。CIP2A表达与EAC的组织学分级、FIGO分期、宫颈管受累情况、p53表达及Ki-67增殖指数有关（P＜0.05）。Kaplan-Meier法生存分析显示EAC患者5年无病生存率为92.0%、总生存率为88.0%；CIP2A表达、组织学分级、FIGO分期、肌层浸润深度、附件转移、脉管内癌栓及Ki-67增殖指数与患者预后不良相关（P＜0.05）。多因素分析显示，组织学分级、FIGO分期及脉管内癌栓是影响子宫内膜样腺癌患者预后生存的独立危险因素（P＜0.05）。结论:CIP2A在子宫内膜样腺癌中呈高表达，与患者总生存率下降相关，并非影响患者预后的独立危险因素。     

Medicare's hospital readmissions reduction program and the rise in observation stays

Objective

To evaluate whether Medicare's Hospital Readmissions Reduction Program (HRRP) is associated with increased observation stay use.

Data Sources and Study Setting

A nationally representative sample of fee-for-service Medicare claims, January 2009–September 2016.

Study Design

Using a difference-in-difference (DID) design, we modeled changes in observation stays as a proportion of total hospitalizations, separately comparing the initial (acute myocardial infarction, pneumonia, heart failure) and subsequent (chronic obstructive pulmonary disease) target conditions with a control group of nontarget conditions. Each model used 3 time periods: baseline (15 months before program announcement), an intervening period between announcement and implementation, and a 2-year post-implementation period, with specific dates defined by HRRP policies.

Data Collection/Extraction Methods

We derived a 20% random sample of all hospitalizations for beneficiaries continuously enrolled for 12 months before hospitalization (N = 7,162,189).

Principal Findings

Observation stays increased similarly for the initial HRRP target and nontarget conditions in the intervening period (0.01% points per month [95% CI −0.01, 0.3]). Post-implementation, observation stays increased significantly more for target versus nontarget conditions, but the difference is quite small (0.02% points per month [95% CI 0.002, 0.04]). Results for the COPD analysis were statistically insignificant in both policy periods.

Conclusions

The increase in observation stays is likely due to other factors, including audit activity and clinical advances.     

Influence Factors and Prediction Model of Bond Strength of Tunnel Fireproof Coating under Freeze–Thaw Cycles

The freeze–thaw resistant performance of a tunnel fireproof coating (TFC) has an important impact on bonding property and durability. The influence of redispersible emulsion powder, polypropylene fiber and air-entraining agent on TFCs was studied. Transverse fundamental frequency and ultrasonic sound velocity were used to evaluate the damage degree of TFC, and the mechanism was revealed by SEM and pore structure. The results show that the most beneficial effect on bond strength of TFC is redispersible emulsion powder, followed by air-entraining agent, and then polypropylene fiber. After freeze–thaw cycles, the cumulative pore volume of micropores in the TFC increases obviously, while the porosity of macropores does not change significantly. A prediction model was proposed, which can calculate the bond strength from the damage degree of TFC under freeze–thaw cycles. The achievement can promote the application of TFC in cold regions.     

Wnt/β⁃catenin信号通路参与马蹄内翻足畸形形成的研究

目的　探讨Sox9（sex determining region Y-box9）和β-catenin对先天性马蹄内翻足（congenital talipes equinovarus，CTE）的影响以及Wnt/β-catenin信号通路作用机制。 方法　将孕10 d的SD大鼠随机均分为实验组及对照组，以135 mg/kg全反式维甲酸溶于矿物油对实验组大鼠进行灌胃制作胎鼠CTE模型，对照组予以等量矿物油灌胃处理，取大鼠足踝部组织，通过免疫组化、RT-PCR、Western blot检测β-catenin、Sox9以及磷酸化β-catenin-S552的表达水平。 结果　与对照组相比，HE染色可见CTE模型组织中有较多的胶原组织沉积，免疫组化结果显示实验组标本Sox9与β-catenin表达增高，RT-qPCR表明实验组Sox9与β-catenin的mRNA水平显著增高，Western blot结果显示实验组Sox9与β-catenin的表达增高而磷酸化β-catenin-S552表达降低。 结论　CTE大鼠的足踝部组织中Sox9高表达受Wnt/β-catenin信号通路调控，该通路参与先天性马蹄内翻足畸形的形成。     

胶质瘤合并动静脉畸形一例报道并文献复习

患者男性,42岁,因突发头痛、呕吐后昏迷,于2017年7月收治于贺州市人民医院神经外科。入院时体检:格拉斯哥昏迷量表(GCS)评分5分。双侧瞳孔大小不等,左侧直径2.0 mm、右侧直径4.0 mm,对光反射消失。双侧巴宾斯基征(+)、查多克征(+)、奥本海姆征(+)、戈登征(+)。脑膜刺激征阴性。四肢肌力检查不能配合、刺激有回缩反应,肌张力高。头颅CT扫描提示右侧额部团片状低密度影(范围约55 mm×92 mm),颞部周围见团状高密度影(范围约50 mm×44 mm×36 mm),占位效应明显,脑室、脑沟及脑裂明显受压变窄、消失,中线结构向左侧偏移,脑疝形成(图1)。     

课程思政视域下医学人文教育的途径与尝试

“课程思政”作为新时代背景下的综合教育理念和德育工作指导方针，为立德树人指引了正确方向。中国医学教育是为党和国家培育合格医学人才，为人民群众培养健康守护者，如此的国家社会需求离不开对医学生人文思政素质的着力培养。因此，从课程思政视野出发，以深圳大学医学部为具体案例，在专业课程设计、特色社会实践两个维度上探析融入思想政治元素的医学人文教育的路径选择与现实尝试。