库拉索芦荟多糖对小鼠腹腔巨噬细胞的体外激活作用

 目的　研究库拉索芦荟多糖对小鼠腹腔巨噬细胞的激活作用。方法　用25,50,100,200,400μg·mL^-1的库拉索芦荟多糖体外诱导小鼠腹腔巨噬细胞48h ,测定细胞内乳酸脱氢酶、酸性磷酸酶、精氨酸酶活性及释放的TNF-α和IL-1含量。结果　库拉索芦荟多糖能上调腹腔巨噬细胞内乳酸脱氢酶、酸性磷酸酶和精氨酸酶活性,并能显著诱导腹腔巨噬细胞表达TNF-α和IL-1,增强吞噬中性红能力。结论　库拉索芦荟多糖对小鼠腹腔巨噬细胞具有激活作用。     

Health and sanitary status in 1970 of Tubu nomads dwelling in Northeastern Niger

Background: The Tubu are nomadic people who live in remote parts of the central Sahara, primarily in the Tibesti massif(Chad), and in both Northeastern Niger and Southern Libya. All of these areas are close to become conflict zones. However, no data about the Tubu’s health and sanitary status are currently available, which would be of major concern if humanitarian interventions would become required.Methods: In 1970, the "Mission Anthropologique Belge au Niger"(MABN) investigated a Tubu tribe named Broaya that lived at Seguedine and Djado on the northeastern rim of the Tenere desert. One hundred fifty-one adult volunteers answered an oral questionnaire and underwent a medical examination, followed by the collection of blood thin films and samples of urine and stool. The environmental fauna of medical importance was also studied.Results: Albeit 43 year-old, these results have not been previously published. The estimated age of death for fathers was approximately 56 years, and that for mothers was 60 years. On average, each married woman had had 4.7 children. The overall perinatal mortality rate was 232 ‰, the overall infant mortality rate was 153 ‰, and the overall child mortality rate was 99 ‰. The mean height was 164.1 cm and 157.4 cm, the mean weight was 50.1 kg and 47.9kg, and the mean blood pressure was 131/78 mm Hg and 127/75 mm Hg for males and females, respectively. The physical examination found 6 cases of blindness(4.0%). Five subjects presented with an elevated blood pressure(3.3%), and 5(3.3%) displayed an abnormal thoracic auscultation evocative of tuberculosis or of an acute lung infection. The abdominal examination and renal palpation found 5 large masses(3.3%), and 2 subjects had a palpable enlarged spleen(1.3%). The blood thin films were fixed in methanol and subsequently examined in Toulouse. The search for blood parasites was negative. The urine samples were centrifuged and then microscopically examined in the field. No blood-fluke eggs were found. The stool samples were mixed with a pre     

经皮穿刺冠状动脉介入疗法的非心脏并发症的诊治

为评价经皮冠状动脉介入疗法的非心脏并发症的诊断和治疗效果 ,对 4 4 35例次经股动脉介入诊疗术后发生的非心脏并发症进行分析。结果 :非心脏并发症的总发生率为 1.3% (5 7/44 35 ) ,其中穿刺部位严重外出血 0 .0 9% (4/44 35 ) ,腹膜后血肿 0 .0 2 % (1/44 35 ) ,假性动脉瘤 0 .9% (40 /44 35 ) ,肺动脉栓塞 0 .0 2 % (1/44 35 ) ,紫趾综合征 0 .0 5 % (2 /44 35 ) ,股动脉夹层 0 .0 7% (3/44 35 ) ,股动脉穿孔 0 .0 2 % (1/44 35 ) ,造影剂过敏性休克 0 .0 5 % (2 /44 35 ) ,脑卒中 0 .0 5 %(2 /44 35 ) ,股动脉血栓形成 0 .0 2 % (1/44 35 )。仅死亡 1例 (肺动脉栓塞 ) ,占 0 .0 2 % (1/44 35 ) ,其余病例经处理未留后遗症。提示 :经皮冠状动脉介入诊疗的非心脏并发症并非少见 ,如能及时发现、做出诊断并采取相应的处理 ,一般预后良好。     

PD98059对11,12-EET及缺血预处置大鼠心功能保护作用的影响

为观察PD980 5 9对给予 11,12 EET或缺血预处置在体大鼠再灌注心功能的影响 ,了解磷酸化ERK1/ERK2的表达在上述心脏保护中的作用 ,使用雄性Wistar大鼠 ,通过结扎 (6 0min)和松开 (30min)冠状动脉左前降支 ,复制缺血 /再灌注模型 ;采用缺血 5min ,再灌注 5min 2次造成缺血预处置 ;6 .2 4× 10 -8mol/L 11,12 EET通过静脉给予。计算机记录再灌注过程中心功能的变化 ;实验结束时取心肌采用Western Blot法测定ERK1/ERK2的表达。结果显示 :再灌注 30min ,I/R组的 +dp/dtmax(收缩期左心室内压上升的最大变化速率 )、-dp/dtmax(舒张期左心室内压下降的最大变化速率 )和LVDP(左心室发展压 )均显著低于SI +I/R组和EET +I/R组 (P <0 .0 5 ) ;SI +I/R +PD组的 +dp/dtmax、-dp/dtmax及LVDP均明显低于SI+I/R组 (P <0 .0 5 ) ,EET +I/R +PD组的 +dp/dtmax、-dp/dtmax及LVDP明显低于EET +I/R组(P <0 .0 5 )。研究表明 :6 .2 4× 10 -8mol/L 11,12 EET及缺血预处置均有保护心功能的作用 ;这种保护作用通过激活缺血 /再灌注时ERK1/ERK2的表达而实现。     

Noninvasive methods for prediction of esophageal varices in pediatric patients with portal hypertension

AIM: To evaluate clinical and laboratory parameters for prediction of bleeding from esophageal varices (EV) in children with portal hypertension. METHODS: Retrospective study of 103 children (mean age: 10.1 ± 7.7 years), 95.1% with intrahepatic portal hypertension. All patients had no history of bleeding and underwent esophagogastroduodenoscopy for EV screening. We recorded variceal size (F1, F2 and F3), red-color signs and portal gastropathy, according to the Japanese Research Society for Portal Hypertension classification. Patients were classified into two groups: with and without EV. Seven noninvasive markers were evaluated as potential predictors of EV: (1) platelet count; (2) spleen size z score, expressed as a standard deviation score relative to normal values for age; (3)platelet count to spleen size z score ratio; (4) platelets count to spleen size (cm) ratio; (5) the clinical prediction rule (CPR); (6) the aspartate aminotransferase to platelet ratio index (APRI); and (7) the risk score. RESULTS: Seventy-one children had EV on first endoscopy. On univariate analysis, spleen size, platelets, CPR, risk score, APRI, and platelet count to spleen size z score ratio showed significant associations. The best noninvasive predictors of EV were platelet count [area under the receiver operating characteristic curve (AUROC) 0.82; 95%CI: 0.73-0.91], platelet: spleen size z score (AUROC 0.78; 95%CI: 0.67-0.88), CPR (AUROC 0.77; 95%CI: 0.64-0.89), and risk score (AUROC 0.77; 95%CI: 0.66-0.88). A logistic regression model was applied with EV as the dependent variable and corrected by albumin, bilirubin and spleen size z score. Children with a CPR < 114 were 20.7-fold more likely to have EV compared to children with CPR > 114. A risk score > -1.2 increased the likelihood of EV (odds ratio 7.47; 95%CI: 2.06-26.99). CONCLUSION: Children with portal hypertension with a CPR below 114 and a risk score greater than -1.2 are more likely to have present EV. Therefore, these two tests can be helpful in selecting childr     

Hepatocellular carcinoma in a non-cirrhotic patient with Wilson’s disease

We report the exceptional case of hepatocellular carcinoma in a non-cirrhotic patient, whose Wilson’s disease was diagnosed at the unusual age of 58 years. The liver histology revealed macrovesicular steatosis with fibrosis, but no cirrhosis. The disease was treated with D-penicillamine for 3 years until acute discomfort in the right upper quadrant led to detection of multifocal hepatocellular carcinoma, which was successfully resected. The histological examination confirmed the malignant nature of the 4 lesions, which were classified according to Edmondson and Steiner as poorly differentiated hepatocellular carcinoma grade 3. The non-tumoral parenchyma showed 80% steatosis with ballooned cells, lobular inflammation, septal fibrosis but no cirrhosis. Hepatocellular carcinoma is rare in Wilson’s disease, especially in the absence of cirrhosis. The literature’s 28 published cases are reviewed and the contributory role of copper in the hepatocarcinogenic process is discussed.     

颊针理论及其临床应用

目的探讨面颊部穴位分布规律与人体全身的相关性及其在临床诊疗中的作用效果。方法通过临床实践、观察研究和面颊部的解剖研究,结合生物全息论,分析颊针的理论基础与颊针疗法的理论依据。结果面颊部存在着一个涵盖整个人体的全息缩影系统——颊针系统,对疼痛性疾病疗效显著。结论颊针疗法是一种新的微针诊疗体系和方法。     

Flow-induced Expression and Phosphorylation of VASP in Endothelial Cells

1 Introduction It is well known that mechanical forces have important influence on endothelial cells, in particular, on cytoskeleton reorganization. VASP (vasodilator stimulated phosphoprotein) is a 46 KD actin associated protein. It is a member of Ena/VASP protein family and composed of EVH1, proline-rich and EVH2 domains. It is considered as an important component of the sub-cellular regions where remodelling of the actin cytoskeleton takes place,such as the front of spreading lamellipodia in motile cells,focal adhesions, and cell-cell junctions[1 ～ 3] . The aim of this study was to investigate the effects of laminar shear stress on the expression and phosphorylation of VASP associated with actin remodelling in cultured human umbilical endothelial cells (HUVECs).     

Potential Use of Polyelectrolyte Multilayer thin Films in Vascular Tissue Engineering:Evaluation of the Viability and Adhesion of Endothelial Cells

1 Introduction A method in vascular tissue engineering to obtain hemoeompatible synthetic prosthesis consists to cover the luminal surface by a monolayer of endothelial cells(ECs). Nevertheless, the surface of current prosthesis does not favour the development of an ECs monolayer.Recently, a new versatile method of self-assembled architectures based on the alternate adsorption of polycations and polyanions has been developed to lead to the build-up of multilayered polyelectrolyte films (MPF). This new type of surface modification offers also large possibilities for varying the physico-chemical properties such as roughness or surface charges, film thickness and viscoelastic properties.     

热休克蛋白融合蛋白对人树突状细胞分化成熟的刺激作用

目的：研究热休克蛋白融合蛋白对人树突状细胞分化成熟的刺激作用。 方法：采用GM-CSF和IL-4将人外周血单核细胞诱导成未成熟树突状细胞,然后用热休克蛋白融合蛋白刺激其分化成熟,以单核细胞条件培养液（MCM）和模拟的单核细胞条件培养液（MCM mimic）为对照。以流式细胞仪检测树突状细胞表面分子的表达情况。 结果：热休克蛋白融合蛋白可以刺激树突状细胞表面表达CD40、CD80、CD86和HLA-A2分子。结论：热休克蛋白融合蛋白可诱导人树突状细胞分化成熟。