主动脉夹层术后患者心理状况及躯体症状对生活质量的影响

目的 探讨主动脉夹层术后患者心理状况、躯体症状对其生活质量的影响及作用机制，为制订干预计划提供参考。方法 采用广泛性焦虑障碍量表、患者健康问卷抑郁量表、躯体症状量表、12项简明健康状况调查表对327例主动脉夹层术后患者进行调查，根据相关性分析结果提出假设，应用AMOS软件进行结构方程模型分析。结果 主动脉夹层术后患者生活质量得分（81.56±7.36）分，焦虑得分2.00(0, 3.00)分，抑郁得分2.00(0, 3.00)分，躯体症状得分5.00(2.00, 8.00)分；焦虑、抑郁、躯体症状对生活质量有直接影响，焦虑、抑郁通过躯体症状对生活质量有间接影响（均P<0.05）。结论 主动脉夹层术后患者生活质量处于中等偏上水平，应早期对主动脉夹层术后患者的心理状况与躯体症状进行动态评估与监测，及时进行心理干预和症状管理，以改善其生活质量。     

The hidden aspect of carotid lesions in traffic accidents: A little-known phenomenon

Vascular injuries that occur during traffic accidents are a commonly neglected aspect that can add more detail to the framework of a case. In this study, we analysed a case series of 150 traffic accidents, 39 of which were marked by microscopically identifiable vascular lesions. The purpose was to identify the presence of carotid injuries in individuals who died due to traffic accidents and had nonpenetrating trauma of the neck. We focused on the discrepancies regarding the macroscopical aspect and the histology and demonstrated how histological analysis of the carotids in cases of trauma can reveal injuries that are attributable to the trauma itself. We conducted a histological analysis of the lesions to describe their distribution and type and investigate potential correlations. The study offers insight on how to examine road accidents that involve traumatic injury of the carotid arteries. Indeed the main task of the forensic pathologist in the case of death is to establish the existence of a causal relationship between the micro- or macroscopic alterations observed in the autopsy and the traumatic event that led to the death of the subject. Thus, further morphological elements were provided to the forensic practitioners that may reveal injuries attributable to the trauma itself and should be evaluated in cases of trauma in traffic accidents.     

基于iTRAQ技术探讨人胃癌细胞乙酰肝素酶调控的信号通路北大核心

目的:探讨人胃癌细胞中乙酰肝素酶(HPSE)调控的差异蛋白和信号通路,为以HPSE为靶点防治胃癌提供依据。方法:利用siRNA干扰技术,在乙酰肝素酶(HPSE)基因高表达的SGC7901细胞中转入干扰HPSE的慢病毒载体(LV-HPSE-RNAi),通过嘌呤霉素筛选出稳定株,利用qPCR和Western blot分别检测HPSE mRNA和蛋白表达;利用细胞划痕实验和Transwell侵袭实验测定细胞的迁移和侵袭能力;利用同位素标记的相对和绝对定量(iTRAQ)联合二维液相色谱串联质谱(2DLC-MS/MS)技术筛查差异蛋白,并进行生物信息学分析,对差异蛋白PKCa应用Western blot进一步验证。结果:人胃癌SGC7901细胞和沉默HPSE表达的ZSGC7901细胞对比检测出98个差异蛋白,并且富集在157条信号通路上。与肿瘤发生发展关系密切的有6条:细胞外基质和受体相互作用、局灶性黏附、PI3K-Akt信号通路、癌途径、癌中microRNAs、Wnt信号通路。且上调的FAK、ITGA、PKCa等蛋白和下调的PKA、CDK6等蛋白在通路中处于重要的位置。Western blot结果证明PKCa在沉默HPSE的ZSGC7901细胞中表现为上调,差异具有统计学意义(P<0.05),与蛋白质组学筛选结果一致。结论:HPSE在人胃癌细胞中调控的蛋白,参与细胞重要生物学过程、参与重要分子功能及重要信号途径,有望可以成为防治胃癌的新靶点。     

Advanced Cancer Patients' Prognostic Awareness and Its Association With Anxiety,Depression and Spiritual Well-Being: A Multi-Country Study in Asia

AimsThe associations between prognostic awareness, acceptance of illness and psychological outcomes (anxiety, depression and spiritual well-being) remain unclear. This study examined the associations between prognostic awareness and various psychological outcomes and how they can be moderated by patient acceptance of illness (cancer).Materials and methodsIn total, 1184 patients with stage IV solid cancer were recruited at major public hospitals across four Asian countries (China, India, Sri Lanka, Vietnam). Prognostic awareness and acceptance of illness were assessed through self-reported understanding of treatment intent and acceptance of illness, respectively. Anxiety and depression were assessed using the Hospital Anxiety and Depression Scale, whereas spiritual well-being was measured using the Functional Assessment of Chronic Illness Therapy – Spiritual Well-Being Scale. Multivariate regressions were used to estimate the associations while controlling for patient characteristics.ResultsCompared with being unaware of their prognosis (i.e. believing that their cancer is curable), being aware or unsure of their prognosis was associated with higher anxiety and depressive symptoms, and lower spiritual well-being scores. Acceptance of illness moderated these relationships and improved the psychological outcomes.ConclusionsThe results suggest that disclosure of prognostic information should be provided in conjunction with psychological interventions that focus on acceptance of illness.     

RNA sequencing steps toward the first line

• DNA is the sequence that codes for proteins.
• Messenger RNA is transcribed from the DNA sequence of genes and translated into protein.
• It can be difficult to predict how a change in the DNA sequence will affect messenger RNA and protein quantity and quality.
• DNA translocation changes can cause the joining of sequences from two different genes or different parts of the same gene.
• DNA sequencing is often used clinically to predict how DNA changes might affect proteins.
• Alternatively, RNA sequencing can be used as a more direct measure of the effect of DNA changes on the protein products.
• This sequencing is important for identifying changes in cancer that may indicate response to targeted therapy, prognosis, or diagnosis.

     

The impact of neighborhoods and friendships on interracial anxiety among medical students and residents: A report from the medical student CHANGES study

Objective

To examine the experience of interracial anxiety among health professionals and how it may affect the quality of their interactions with patients from racially marginalized populations. We explored the influence of prior interracial exposure—specifically through childhood neighborhoods, college student bodies, and friend groups—on interracial anxiety among medical students and residents. We also examined whether levels of interracial anxiety change from medical school through residency.

Data Source

Web-based longitudinal survey data from the Medical Student Cognitive Habits and Growth Evaluation Study.

Study Design

We used a retrospective longitudinal design with four observations for each trainee. The study population consisted of non-Black US medical trainees surveyed in their 1st and 4th years of medical school and 2nd and 3rd years of residency. Mixed effects longitudinal models were used to assess predictors of interracial anxiety and assess changes in interracial anxiety scores over time.

Principal Findings

In total, 3155 non-Black medical trainees were followed for 7 years. Seventy-eight percent grew up in predominantly White neighborhoods. Living in predominantly White neighborhoods and having less racially diverse friends were associated with higher levels of interracial anxiety among medical trainees. Trainees' interracial anxiety scores did not substantially change over time; interracial anxiety was highest in the 1st year of medical school, lowest in the 4th year, and increased slightly during residency.

Conclusions

Neighborhood and friend group composition had independent effects on interracial anxiety, indicating that premedical racial socialization may affect medical trainees' preparedness to interact effectively with diverse patient populations. Additionally, the lack of substantial change in interracial anxiety throughout medical training suggests the importance of providing curricular tools and structure (e.g., instituting interracial cooperative learning activities) to foster the development of healthy interracial relationships.