Objective To summarize the critical point of diagnosis and endovascular repairment (EVR) to thoracic aortic aneurysm (TAA), thoracic pseudoaneurysm (TPA) and aortic dissection (AD), by comparison the computerized tomography angiography (CTA) images before and after EVR to observe effects, so as to explore a unique index of imageology to assess the pathological development and evaluate therapeutically effect in dynamic and systemic reviews in pre, intra, postEVR and followup period. Methods Fortyeight patients involving aneurysm or dissection of thoracic aorta were treated with EVR based on the preoperative CTA imaging. Before and after the introducing of stentgraft, digital substation angiography (DSA) was taken place and sequential enhanced CTA was followed to evaluate the effects of the treatment. All imagings of CTA and DSA were collected and induced into e-FilmTM database to select key sections for analyses and measurement. Results Fortynine EVR were preformed and 54 stent grafts were implanted in 48 cases, with endothelial tears sealed in 42 cases of dissection, aneurismal cavities excluded in 2 cases of aortic aneurysm, and rupture site closed in 4 cases of pseudoaneurysm. Endoleakage happened in 9 cases, which were treated successfully by appropriate measures. One case suffered hemorrhage from introducing artery (iliac) which was controled by surgery, but he died of disseminated intravascular coagulation and then multiple organs failure. Fortyseven cases were followed up in 6-51 months with a satisfied clinical effect. Conclusion EVR is favorable in the effect of repairment to true, false and dissection of thoracic descending aorta. Chest pain and CTA scan is the key of early diagnosis of aortic dissection. Certain sections and leftanterior oblique viewing are the crucial profile for assessment and evaluation before and after operation.
Objective To evaluate the efficiency and security of physical exercise with low intensity against malnutrition and sarcopenia in patients with cirrhosis. Methods Between December 2014 and October 2015, 37 patients with cirrhosis were divided into two groups according to their willings, with 19 in the exercise group and 18 in the control group. Endurance of the exercise for 3 months were recorded. Mid-arm circumference, " up and go” time, width of portal vein and Child-Pugh score were compared before and after the research between the two groups. Results Three months later, the mid-arm circumference and the " up and go” time of the exercise group [(33.99±2.15) cm, (9.17±0.35) s] were better than those before the exercise [(32.09±2.58) cm, (9.77±0.46) s] and those in the control group [(31.93±2.04) cm, (9.76±0.30) s], and the differences above were all statistically significant (P<0.05). The change of the width of portal vein was positively correlated with pre-exercise body mass index in overweight patients (r=0.93, P=0.007). Conclusions Physical exercise with low intensity is safe and effective against malnutrition and sarcopenia in patients with cirrhosis. Overweitht patiens or malnutrition at the early stage may benefit more.
目的 比较CT门静脉血管成像（CTP）与内镜诊断肝硬化胃食管静脉曲张的效果，探讨CTP对肝硬化门静脉高压侧支循环血管的显示及其在随访中的价值。 方法 对2010年1月－2011年12月收治的43例肝硬化患者行多排螺旋CT增强扫描门静脉血管成像，观察胃食管静脉曲张程度，及有无其他侧支开放，并在4周内行内镜检查，了解胃食管静脉曲张的程度。 结果 43例患者中有33例经胃镜确诊食管静脉曲张，其中CTP诊断与胃镜相符29例；胃镜诊断胃底静脉曲张14例，其中有12例CTP诊断与之相符；CTP诊断胃食管静脉曲张与内镜有较好的相关性和一致性，但在判断食管静脉曲张部位上与胃镜一致性较差。 结论 对肝硬化患者可采用CTP进行随访，以评估胃食管静脉曲张出血风险，可减少不必要的内镜随访。
【摘要】 目的 探讨肝硬化食管静脉曲张程度与门脾静脉内径、肝功能Child-Pugh分级间的关系。 方法 对2007年1月-2010年1月间56例肝硬化患者行增强CT，测量门静脉主干及脾门部脾静脉直径，采用Child-Pugh分级标准进行肝功能分级，并行胃镜了解食管静脉曲张的程度。 结果 食管静脉曲张程度与门、脾静脉内径呈正相关，而Child-Pugh分级与门脾静脉内径、食管静脉曲张程度无相关性。 结论 根据门、脾静脉内径可预测肝硬化上消化道出血的可能性；在Child-Pugh分级基础上对患者上消化道出血的风险进行评估显得尤为重要。【Abstract】 Objective To discuss the relationship among the esophageal varices, the diameter of portal vein and spleen vein, and Child-Pugh score in patients with liver cirrhosis. Methods The study included 56 patients who had liver cirrhosis between January 2007 and January 2010. We measured their portal vein and spleen vein diameter with CT; used Child-Pugh score to grade their hepatic function; and detected the degree of the esophageal varices by endoscopy. Results There was a positive correlation between the degree of esophageal varices and diameter of portal vein and spleen vein, while no correlation showed between portal vein and spleen vein diameter, degree of esophageal varices, and Child-Pugh score. Conclusion The upper gastrointestinal bleeding in patients with liver cirrhosis can be predicted by the diameter of portal vein and spleen vein, assessment of upper gastrointestinal bleeding based on Child-Pugh score should also be taken into account.
【摘要】 目的 探讨丙型肝炎病毒非结构蛋白NS4B对肝细胞内p53表达的影响，以及在肝癌发生中的作用与机制。 方法 设置空白对照组、空白载体组、转染NS4B组、转染p53组、共转染NS4B及p53组。使用脂质体介导转染法，转染丙型肝炎病毒非结构蛋白重组质粒PCXN2-NS4B及突变型p53基因重组质粒pC53-CX22AN3进入Chang肝细胞内，并用G418筛选获得稳定表达细胞。采用免疫细胞化学法检测p53表达率。 结果 空白对照组无p53表达，空白载体组及转染NS4B组呈弱阳性表达，转染p53组及共转染组呈阳性表达；转染p53组、共转染组分别与空白对照组、空白载体组及转染NS4B组比较，差异均有统计学意义 （Plt;0.05）。 结论 NS4B可能抑制p53表达，也可能阻止其进入细胞核，但NS4B与突变型p53关系不明确。NS4B导致肝细胞异常增生，诱导肝癌发生可能不依赖p53的异常表达及突变。【Abstract】 Objective To investigate the effect of hepatitis C Virus on-structural protein 4B(HCV NS4B) on expression of p53 in hepatic cell, and to study the role and mechanism in development of hepatocellular carcinoma. Methods The experiment was divided into negative control, pure vector PCXN2, PCXN2-NS4B, PC53-cx22AN3, and co-transfection group. Recombinant plasmid PCXN2-NS4B and mutant p53 gene--PC53-cx22AN3, PC53-cx22AN3 with PCXN2-NS4B, blank vectors were transfected into Chang liver cell by liposome-mediated transfection respectively. Positive cells were screened by G418. The expression rate of p53 was measured by immunocytochemistry. Result No expression rate of p53 gene in control group was found, lower positive expression in group PCXN2 and PCXN2-NS4B. The expression of p53 gene in group PC53-CX22AN3 and co-transfection was ber than the others (Plt;0.005). Conclusion HCV-NS4B may inhibit the expression of p53 gene, and it may play a crucial role in inhibiting p53 transfered to hepatic cells nuclear. But it isn’t clear that the. HCV-NS4B can enhance the role of mutant p53 gene. It suggested that HCV-NS4B induce proliferation of hepatic cell not through regulating the expression of p53.
Amblyopia is a visual development deficit caused by abnormal visual experience in early life, mainly manifesting as defected visual acuity and binocular visual impairment, which is considered to reflect abnormal development of the brain rather than organic lesions of the eye. Previous studies have reported abnormal spontaneous brain activity in patients with amblyopia. However, the location of abnormal spontaneous activity in patients with amblyopia and the association between abnormal brain function activity and clinical deficits remain unclear. The purpose of this study is to analyze spontaneous brain functional activity abnormalities in patients with amblyopia and their associations with clinical defects using resting-state functional magnetic resonance imaging (fMRI) data. In this study, 31 patients with amblyopia and 31 healthy controls were enrolled for resting-state fMRI scanning. The results showed that spontaneous activity in the right angular gyrus, left posterior cerebellum, and left cingulate gyrus were significantly lower in patients with amblyopia than in controls, and spontaneous activity in the right middle temporal gyrus was significantly higher in patients with amblyopia. In addition, the spontaneous activity of the left cerebellum in patients with amblyopia was negatively associated with the best-corrected visual acuity of the amblyopic eye, and the spontaneous activity of the right middle temporal gyrus was positively associated with the stereoacuity. This study found that adult patients with amblyopia showed abnormal spontaneous activity in the angular gyrus, cerebellum, middle temporal gyrus, and cingulate gyrus. Furthermore, the functional abnormalities in the cerebellum and middle temporal gyrus may be associated with visual acuity defects and stereopsis deficiency in patients with amblyopia. These findings help explain the neural mechanism of amblyopia, thus promoting the improvement of the treatment strategy for amblyopia.