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1.
von Willebrand factor (VWF) plays a crucial role in hemostasis and thrombosis. VWF is involved in platelet attachment to the subendothelium, serving as a carrier protein for coagulation factor VIII. In this study, myocardial tissues from deceased patients with ischemic heart disease and a mouse model of acute myocardial infarction were subjected to immunohistochemistry to determine VWF expression. We examined 28 neutral formalin-fixed, paraffin-embedded myocardial tissue samples obtained from the autopsies of patients who were diagnosed with ischemic heart disease within 48 h postmortem. Most myocardial cells were negative for VWF, although some cells showed nonspecific positivity. Elevated VWF expression was observed around myocardial cells undergoing remodeling, suggesting that endothelial proliferation occurred at these sites. In contrast, completely fibrotic myocardial foci did not show upregulated VWF expression. Positivity in fibrin deposition and hemorrhagic sites was observed. The same VWF expression characteristics as those observed in the human samples were observed in the mouse model. VWF immunostaining as an endothelial marker may be a useful supplementation to conventional staining techniques that are currently used in the diagnosis of ischemic heart disease in terms of examining the timing of myocardial remodeling in detail and highlighting the remodeling process.  相似文献   
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王秋  林川  彭生才  陈洁 《西部医学》2020,32(7):1053-1057
【摘要】目的 探讨肾癌患者血清希佩尔 林道基因(VHL)、缺氧诱导因子 1(HIF 1α)和缺氧诱导因子 2(HIF 2α)的表达及与预后的相关性分析。 方法 选取2015年3月~2016年3月我院收治的82例肾癌患者为肾癌组,同时选取51例健康者为对照组。利用酶联免疫吸附法(ELISA)测定两组的VHL、HIF 1α及HIF 2α水平。结果 肾癌组患者VHL水平比对照组明显降低,HIF 1α、HIF 2α水平比对照组明显升高(P<005);Ⅰ/Ⅱ、Ⅲ期肾癌患者术后VHL水平均高于术前,且Ⅰ/Ⅱ期高于Ⅲ期(P<005);Ⅰ/Ⅱ、Ⅲ期肾癌患者术后HIF 1α、HIF 2α水平均低于术前,且Ⅰ/Ⅱ期低于Ⅲ期(P<005);肾癌患者血清VHL、HIF 1α及HIF 2α表达水平与年龄、性别无关(均P>005),与病灶直径、淋巴结转移、病理分级、TNM分期相关(均P<005);肾癌患者3年生存率与患者年龄、性别无关(均P>005),患者VHL高表达的3年生存率明显高于VHL低表达(P<005),患者HIF 1α、HIF 2α高表达的3年生存率明显低于HIF 1α、HIF 2α低表达(均P<005);血清VHL低表达、血清HIF 1α、HIF 1α高表达是肾癌患者术后肾衰竭的独立危险因素;患者VHL水平与发生肾癌呈负相关,HIF 1α、HIF 2α水平与发生肾癌呈正相关(P<005);血清VHL、HIF 1α、HIF 2α预测肾癌患者的最佳截值分别为37978、771、095,三者联合预测的AUC大于VHL(Z=8268,P<005),HIF 1α(Z=8268,P<005),HIF 2α(Z=8268,P<005)。结论 血清VHL、HIF 1α和HIF 2α对肾癌患者具有较好的预后预测价值,可作为肾癌患者发生、发展的重要指标及预后预测的分子标志物,三者联合应用能提高其预后预测能力。  相似文献   
3.
Von Willebrand Disease is a common cause of excessive bruising and bleeding in children. This short article gives advice on diagnosis and management for paediatricians. Given its prevalence and presenting symptoms, VWD should always be considered in the assessment of children suspected of non-accidental injury. Its diagnosis can be challenging, not only because of the various subtypes of the disorder but because of the considerable overlap between VWD and normal individuals. Laboratory diagnosis requires a range of quantitative and qualitative tests of the VWF protein, with targeted gene analysis increasingly used to confirm the diagnosis of type 2 and type 3 VWD. Bleeding Assessment Tools may be helpful in directed laboratory testing but are often less so in young children who have had limited haemostatic challenges. Treatment for VWD includes the use of antifibrinolytic drugs, vasopressin or VWF-containing clotting factor concentrates. Treatment is often on-demand for individual bleeding episodes but there are specific indications for the use of prophylactic treatment in children.  相似文献   
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In 1952, renal cell carcinomas had been divided into 2 categories—clear cell or granular cell—depending upon their cytoplasmic staining characteristics. In the following years, the inventory of renal epithelial tumors has expanded by the addition of tumors named by their architectural pattern (i.e., papillary RCC, tubulocystic RCC), anatomic location (i.e., collecting duct carcinoma, renal medullary carcinoma), associated diseases (i.e., acquired cystic disease-associated RCCs). With the extensive application of molecular diagnostic techniques, it becomes possible to detect genetic distinctions between various types of renal neoplasm and discover new entities, otherwise misdiagnosed or diagnosed as unclassified RCC. Some tumors such as ALK rearrangement-associated RCC, MiT family translocation renal carcinomas, SDH-deficient renal cancer or FH-deficient RCC, are defined by their molecular characteristics. The most recent World Health Organization (WHO) classification of renal neoplasms account for more than 50 entities and provisional entities. New entities might be included in the upcoming WHO classification. The aim of this review is to summarise and discuss the newly acquired data and evidence on the clinical, pathological, molecular features and on the prognosis of new RCC entities, which will hopefully increase the awareness and the acceptance of these entities among clinicians and improve prognostication for individual patients.  相似文献   
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This article focuses on Lars von Trier's 2011 film, Melancholia, described as ‘a beautiful film about the end of the world’ and interlocking personal and global tragedy. Drawing directly on her personal emotional response to the film, and referring to her profound incapacity to talk about it for many years after an initial encounter with it, the author turns to a range of object relations psychoanalytic thinkers to consider what such experience has to say about lived emotional relationships to cinema, and its role in shaping and articulating psychological, and affective states. The article touches on debates about the cinematic gaze, and the role of film as a psychological object, and considers whether film might be seen as offering a form of therapeutic encounter for viewers.  相似文献   
9.
The pituitary tumor-transforming gene 1 (PTTG1), also known as Securin, is considered an oncogene. This study aimed to investigate the role of PTTG1 in clear cell renal cell carcinoma (ccRCC) using in silico bioinformatics approaches. A pan-cancer analysis using The Cancer Genome Atlas (TCGA) data indicated that among all cancer types copy number amplification of PTTG1 gene was most frequently found in ccRCC. However, amplification of PTTG1 gene copy number did not correlate with the increase of mRNA level in ccRCC, and did not predict the patients' overall survival. Instead, ccRCC was correlated with overexpression of PTTG1 mRNA, and its expression level was stage-dependent increased in cancer patients. An outlier analysis using the Oncomine database suggested that PTTG1 mRNA expression served as a good biomarker for ccRCC. Pathway analysis for upregulated genes enriched in PTTG1-high expressing ccRCC patients found that PTTG1 overexpression was associated with mitotic defects. Mining drug sensitivity data using the Cancer Therapeutics Response Portal (CTRP) discovered that PTTG1-high expressing ccRCC cell lines were susceptible to a Rac1 (Ras-related C3 botulinum toxin substrate 1) inhibitor NSC23766. Therefore, this study provides an in silico insight into the role of PTTG1 in ccRCC, and repurposes the Rac1 inhibitor NSC23766 for treating PTTG1-high expressing ccRCC.  相似文献   
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