胰腺癌血管内皮生长因子、微血管密度的表达及意义

目的 :探讨胰腺癌血管内皮生长因子 (VEGF)和微血管密度 (MVD)表达的临床意义及其相互关系。方法 :应用免疫组织化学染色法对 30例胰腺癌和 10例正常胰腺组织 VEGF表达检测和 MVD计数。结果 :胰腺癌VEGF表达率 73.3%、MVD计数 12 .5 3± 4 .12 ,明显高于癌旁组织 13.3%、5 .16± 1.6 3和正常胰腺组织 10 %、4 .2 9±1.32 (P<0 .0 1) ;VEGF表达和 MVD计数与胰腺癌的淋巴结转移有关 (P<0 .0 5 ) ,与肿瘤分化、临床分期无关 (P>0 .0 5 )。结论 :VEGF与胰腺癌的血管生成密切相关 ,VEGF和 MVD可作为反映胰腺癌生物学行为的一个参考指标。     

VEGF和MVD在大肠癌组织中的表达及其临床意义

目的探讨血管内皮生长因子(VEGF)和微血管密度与大肠癌发展的关系。方法采用免疫组化方法对65例大肠癌、65例癌旁组织及16例正常大肠黏膜组织进行VEGF表达及微血管密度(MVD)测定。结果大肠癌组织中VEGF的表达阳性率明显高于癌旁组织及正常组织(P<0.05),与组织学分级无关(P>0.05)。VEGF阳性者MVD值显著高于VEGF阴性者(P<0.05);大肠癌组织中VEGF的表达水平与MVD呈显著性正相关(rs=0.410,P=0.001)。VEGF表达和MVD与大肠癌浸润深度、TNM分期、血行转移密切相关(P<0.05)。VEGF表达阳性或高MVD的大肠癌患者预后差(P<0.05)。结论VEGF表达与大肠癌血管生成密切相关,VEGF和MVD可作为大肠癌预后检测的指标。     

胃癌组织中VEGF和Ang-2表达及微血管密度研究

目的 探讨胃癌组织中血管生成素-2(Ang-2)和血管内皮生长因子(VEGF)表达以及CD34.标记的微血管密度(MVD)及其临床意义.方法 选择胃癌和癌旁组织标本各41例,免疫组化法检测组织中VEGF、Ang.2和CD34表达;CD34.染色热点处计算MVD.分析VEGF和Ang-2表达、MVD、肿瘤临床病理因素之间的相关性;并就41例胃癌患者的预后及其相关因素进行多重回归分析.结果 胃癌和癌旁组织中MVD分别为51.91±15.38和30.76±10.67,两者比较差异有统计学意义(P<0.01);VEGF阳性表达标本(71%)MVD为51.93±16.36.阴性表达标本MVD为31.52±5.18(P=0.0014);Ang-2阳性表达标本(63%)MVD为51.83±5.23,阴性表达标本MVD为32.20±4.77(P<0.01).相关分析显示,VEGF、Ang-2、MVD与癌肿大小、浸润深度、临床分期和淋巴转移显著相关.多重回归分析表明.浸润深度是胃癌重要预后因素(P<0.001).结论 胃癌组织中VEGF、Ang-2的表达与新生血管生成密切相关.通过VEGF和Ang-2高表达而诱导的高MVD对判断胃癌预后有重要意义.     

胃癌组织中VEGF和Ang-2表达及微血管密度研究

目的 探讨胃癌组织中血管生成素-2(Ang-2)和血管内皮生长因子(VEGF)表达以及CD34.标记的微血管密度(MVD)及其临床意义.方法 选择胃癌和癌旁组织标本各41例,免疫组化法检测组织中VEGF、Ang.2和CD34表达;CD34.染色热点处计算MVD.分析VEGF和Ang-2表达、MVD、肿瘤临床病理因素之间的相关性;并就41例胃癌患者的预后及其相关因素进行多重回归分析.结果 胃癌和癌旁组织中MVD分别为51.91±15.38和30.76±10.67,两者比较差异有统计学意义(P<0.01);VEGF阳性表达标本(71%)MVD为51.93±16.36.阴性表达标本MVD为31.52±5.18(P=0.0014);Ang-2阳性表达标本(63%)MVD为51.83±5.23,阴性表达标本MVD为32.20±4.77(P<0.01).相关分析显示,VEGF、Ang-2、MVD与癌肿大小、浸润深度、临床分期和淋巴转移显著相关.多重回归分析表明.浸润深度是胃癌重要预后因素(P<0.001).结论 胃癌组织中VEGF、Ang-2的表达与新生血管生成密切相关.通过VEGF和Ang-2高表达而诱导的高MVD对判断胃癌预后有重要意义.     

HDGF、VEGF与肝肿瘤组织MVD水平的关系及对肝癌病人预后的影响

目的:探讨肝癌组织中肝癌衍生生长因子（HDGF）、血管内皮生长因子（VEGF）的表达及与肿瘤组织微血管密度（MVD）、病人远期预后的关系。方法:选取94例肝癌术后病理标本,距离肿瘤病灶边缘2 cm以上的癌旁组进行研究,采用免疫组织化学法检测肿瘤标本、癌旁组织的HDGF、VEGF及MVD情况。结果:肝癌组织中HDGF蛋白、VEGF蛋白阳性表达率分别为62.77%、65.96%,均明显高于癌旁组织的15.96%、19.15%（P<0.01）;肝癌组织中MVD明显高于癌旁组织（P<0.01）;肝癌组织中HDGF、VEGF蛋白表达与MVD计数均呈明显正相关关系（r=0.824,r=0.839,P<0.01）;HDGF蛋白阳性表达病人3年生存率19.61%（10/51）,明显低于阴性表达生存率47.06%（16/34）（P<0.01）。VEGF蛋白阳性表达病人3年生存率14.81%（8/54）,明显低于阴性表达生存率56.25%（18/32）（P<0.01）。结论:肝癌组织中HDGF、VEGF的表达升高,并且与肝组织MVD呈正相关性,HDGF、VEGF的阳性表达对病人的远期预后不利。     

缺氧诱导因子-1α的表达与肝癌血管生成的关系

目的:探讨缺氧诱导因子-1α(HIF-1α)的表达与肝癌血管生成的关系及HIF-1α、血管内皮生长因子(VEGF)、微血管密度(MVD)对肝癌生物学行为的影响。方法:应用免疫组织化学法检测肝癌组织中HIF-1α、VEGF的表达,用CD34单克隆抗体标记肿瘤血管内皮细胞,计数肝癌组织中的肿瘤MVD。结果:肝癌组织中HIF-1α、VEGF的表达阳性率分别为71%、75%,MVD为41.32±9.47,明显高于正常肝组织(P<0.01),HIF-1α与VEGF的表达及MVD的变化呈显著正相关(r=0.37,P<0.05;r=0.685,P<0.001)。HIF-1α、VEGF、MVD与肝癌的淋巴转移、包膜及静脉侵犯密切相关(P<0.05)。结论:HIF-1α的表达与肝癌新生血管的生成密切相关,HIF-1α的过表达、高MVD与肝癌的不良生物学行为有关,影响肝癌的预后,可能成为预测肝癌转移复发的参考指标。     

HMGB1在肝细胞癌中的表达及其与VEGF、MVD的关系

目的:探讨高迁移率族蛋白1(High mobility group protein box-1,HMGB1)在肝细胞癌组织中的表达及其与血管内皮生长因子(Vascular endothelial growth factor,VEGF)表达、肿瘤微血管密度(Microvascular density,MVD)的关系和临床意义。方法:免疫组织化学SP法检测HMGB1、VEGF和CD34在37例人肝癌组织及相应癌旁肝组织和10例人正常肝组织中的表达;并用抗CD34抗体标记微血管,计数微血管密度;应用Western blot技术定量检测HMGB1在10例肝癌及相应癌旁和5例正常肝组织的表达情况。结果:HMGB1蛋白在肝癌组织中的表达明显高于癌旁组织及正常肝组织。HMGB1的表达与肿瘤大小、门静脉侵犯相关(P=0.018;P=0.036)。肝癌组织中HMGB1表达与VEGF表达及MVD间均呈正相关(r=0.544,P=0.001;r=0.672,P<0.05)。结论:肝癌组织中异常表达增高的HMGB1、VEGF与肝癌微血管生成过程相关,HMGB1可能成为阻断肝癌血管生成的有效靶点。     

HDGF、VEGF在人肝细胞癌中的表达及其与肿瘤血管生成的关系

目的探讨肝癌衍生生长因子(hepatoma-derived growth factor,HDGF)、血管内皮生长因子(vascular endothe-lial growth factor,VEGF)在人肝细胞癌组织中的表达与肿瘤组织微血管形成过程之间的关系和临床意义。方法对108例人肝细胞肝癌及相应的癌旁肝组织标本进行了HDGF、VEGF和CD34免疫组织化学EnVisionTM法检测,并初步分析结果。结果HDGF、VEGF在肝癌组织中阳性表达率分别为63.2%、69.1%;癌旁组织中阳性率分别为16.7%、20.3%。肝癌组织中HDGF、VEGF的表达呈正相关(P<0.05),且两者共同阳性表达与肿瘤微血管密度(microvessel density,MVD)值之间呈正相关(r=0.728,P<0.01;r=0.608,P<0.05)。结论肝癌组织中异常表达增高的HDGF、VEGF与肝癌微血管形成过程相关,可作为判断肝细胞癌侵袭能力、血管生成、判断患者预后的参考标志。     

VEGF表达及MVD与肝细胞癌侵袭、转移和预后的关系

目的 :探讨原发性肝细胞癌 (HCC)血管内皮生长因子 (VEGF)及肿瘤新生血管生成与临床病理及HCC侵袭、转移和预后的关系。方法 :采用免疫组织化学方法 ,检测了 2 0例正常肝组织、2 0例肝硬化组织、5 0例HCC组织中VEGF和CD34的表达 ,以及HCC的微血管密度 (MVD)。结果 :VEGF阳性表达为癌细胞胞浆棕黄色着色 ,CD34的染色定位在血管内皮细胞上 ,HCC窦样血管CD34表达为强阳性 ;除门管区小血管分支及中央静脉外 ,癌旁肝组织、肝硬化组织、正常肝组织基本不表达CD34;HCC的MVD范围 / 32～ 2 32 ) / 0 .74mm2 ,平均 (14 8.5± 5 3.2 ) / 0 .74mm2 。HCC的VEGF表达及MVD与肿瘤大小、病灶数目、病理分级、门静脉癌栓形成、包膜是否完整均有显著关系 (P <0 .0 5或 0 .0 1) ;与患者年龄、HBsAg是否阳性无关 (P >0 .0 5 ) ;与预后亦有关 ,VEGF阴性表达及少血管组 (MVD <14 8)预后显著优于VEGF阳性表达及多血管组 (MVD≥14 8) ,术后平均无瘤生存期少血管组为 4 6个月 ,多血管组为 12个月 ,(P <0 .0 1)。结论 :CD34的表达反映了HCC的新生血管化 ,VEGF和MVD可作为判断HCC侵袭、转移和预后的指标。     

胰腺癌组织的平均微血管密度和血管内皮细胞生长因子的表达

目的:通过检测胰腺癌、慢性胰腺炎及正常胰腺标本中的平均微血管密度(MVD)及血管内皮细胞生长因子(VEGF)表达水平,了解胰腺癌肿瘤血管生成情况.方法:胰腺癌标本26例,慢性胰腺炎标本7例,癌旁正常胰腺组织26例(采用胰腺癌标本中无肿瘤浸润的组织),所有标本均行免疫组化染色.MVD检测为在200倍显微镜下计数5个视野最高数目的微血管,以其平均数表示.VEGF的定量标准为VEGF染色强度与阳性细胞百分比分值的乘积.统计分析采用t检验和二元变量相关分析法.结果:VEGF在胰腺癌、慢性胰腺炎及癌旁正常胰腺组织中均有表达.胰腺癌组织的MVD值及VEGF表达水平均明显高于慢性胰腺炎及癌旁正常胰腺组织(P<0.01).26例胰腺癌组织MVD值及VEGF表达水平在统计学上有相关性(Spearman法r=0.862,P<0.000;Pearson法r=0.855, P<0.000).结论:胰腺癌的微血管生成水平高于慢性胰腺炎及癌旁正常胰腺组织;胰腺癌组织内MVD值及VEGF表达水平在统计学上有相关性.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.     

Possible Spread of adenovirus type 3 from poultry to humans ：indirect evidence from an outbreak in China

Objective:To explore the epidemiology and etiology for an outbreak of acute respiratory tract infection that occurred in one county of Jiangsu Province, China 2004. Methods: Only cases meeting the case definition were included in the study. We reviewed the medical records of the cases who were admitted to the local hospitals, interviewed cases by a standard questionnaire, and then described the epidemiotogic features and analyzed risk factors by means of a case-control study. We collected pharyngeal swab specimens and sent them to different laboratories for isolation and culture. The laboratory used different detection methods such as DIP, PCR, electron microscope examination and microneutralization assay, to identify and then type the positive specimens. Results:A total of 871 cases were reported during the period from April 18 to July 4,2004. The distribution of onset times presented two peaks, one in late May and another in middle June. The epidemic occurred mainly in the elementary and junior high schools in ten townships of one county, and the mean age of the cases was 12 years (range 7 months to 18 years). The course of the disease was acute, and was characterized by fever accompanied with sore throat and tonsillitis. The WBC count of cases was normal or elevated. The mean duration of illness was 5 days (range 2 to 12 days). No fatalities from illness were reported. A case-control study indicated that the possible risk factors were close contact with a case and/or poultry before onset and sharing of towels among members of the family. The typical CPE was observed through inoculating pharyngeal swab specimens into the HEP-2 cell cultures in different laboratories. An infection of adenovirus type 3 was verified by detecting positive specimens in different methods. Conclusion:This investigation demonstrated that the acute respiratory infection in cases was caused by adenovirus type 3. Cases occurred in over 70 schools in ten townships in 2004, and the route of transmission was possibly close contact with cases or droplet transmission.