P57kip2蛋白在进展期胃癌中的表达及临床意义

目的探讨P57kip2(P57)蛋白在进展期胃癌中的表达及临床意义.方法采用免疫组化S-P法检测30例进展期胃癌标本和对照组10例胃正常黏膜组织标本中P57蛋白的表达.结果在进展期胃癌标本中P57蛋白的阳性表达率为36.7%(11/30),对照组中P57蛋白阳性表达率为90.0%(9/10),组间差别显著(P<0.05).在高-中分化的胃癌组P57蛋白的阳性表达率63.3%(7/11),在低分化的胃癌组P57蛋白的阳性表达率为21.2%(4/19),组间比较有显著差异(P<0.05).结论 P57可能与胃癌的发生有关,并可作为判定胃癌恶性程度的重要生物学指标.     

CD44v在胃癌中的表达及其临床意义

目的探讨细胞粘附因子(CD44v)在胃癌细胞中的表达及临床意义.方法采用EnVisionTM免疫组化法检测65例胃癌细胞和胃切缘黏膜细胞中的CD44v表达率,并进行临床病理分析.结果胃癌组的CD44v表达率明显高于胃切缘黏膜组(P<0.01),中、低分化组胃癌细胞的CD44v表达率高于高分化组(P<0.05),伴有淋巴结转移的胃癌细胞CD44v表达率明显高于无淋巴结转移的胃癌细胞(P<0.05),Ⅲ～Ⅳ期组的胃癌细胞的CD44v表达率高于Ⅰ～Ⅱ期胃癌细胞(P<0.05).结论检测胃癌的CD44v表达水平,可为临床提供判断胃癌患者临床分期和预后的参考指标.     

胃癌P^53和Ki-67表达与淋巴结转移的相关性

目的研究P53和Ki-67抗原的表达与胃癌淋巴结转移的关系.方法45例胃癌分2组,淋巴结转移组28例,无转移组17例.以P53和Ki-67的单克隆抗体,用SP法免疫组织化学技术对淋巴结转移组和无转移组进行标记.结果淋巴结转移组与无转移组P53阳性表达分别为19例(19/28),5例(5/17),转移组的p53阳性率高于无转移组,差异有显著性(P<0.05).淋巴结转移组和无转移组的Ki-67高表达分别为21例(21/28)、7例(7/17),转移组Ki-67高表达率明显高于无转移组(P<0.05).P53阳性组的Ki-67高表达率明显高于p53阴性组(P<0.01).结论淋巴结转移组p53阳性表达和Ki-67高表达明显高于无转移组(P<0.05).p53和Ki-67表达可作为预测淋巴结转移,判断预后的指标之一.     

非小细胞肺癌淋巴结中MUC1 mRNA的表达及其临床意义

目的 探讨非小细胞肺癌(NSCLC)纵隔淋巴结隐匿性转移的基因诊断方法 ,并评价其对预后的意义.方法 应用实时荧光定量RT-PCR技术,检测46例pN0 NSCLC(Ⅰa～Ⅱb期)的188枚纵隔淋巴结标本中的黏蛋白1(MUCI)mRNA的表达情况.对照组为同期经手术治疗的患者,其中阴性对照淋巴结26枚(取自10例肺良性病变),阳性对照标本26个(10例NSCLC的肿瘤标本).通过X2检验,比较预后差别.结果 阴性对照组均无MUC1 mRNA表达,特异度100%,表达率为0,阳性对照组26个标本中,24个有MUC1 mRNA表达,灵敏度为92.3%,表达率为(94.6±23.4)%.实验组46例患者的12个标本有MUC1 mRNA表达,占11.2%,其TNM分期上调为Ⅲa.MUC1 mRNA表达阴性组3年生存率(88%)高于MUC1 mRNA阳性组(50%),差异有统计学意义(P<0.05).结论 应用实时荧光定量RT-PCR法检测MUC1 mRNA的表达可诊断肺癌纵隔淋巴结隐匿性转移;纵隔淋巴结隐匿性转移可能与pN0肺癌预后不良有关.     

PTEN和PCNA在胃癌中的表达及其临床意义

目的:检测PTEN蛋白和PCNA蛋白在胃癌组织中的表达,并研究其临床病理意义。方法:用免疫组织化学S—P法检测PTEN和PCNA蛋白在80例胃癌组织中的表达,并取30例同期胃炎黏膜标本作为对照。结果:胃炎黏膜PTEN蛋白阳性表达表达率为100.0%(30/30),胃癌组织PTEN蛋白阳性表达率为40.0%(32/80);高、中分化腺癌的PTEN蛋白阳性表达率高于低分化腺癌的;Ⅰ期、Ⅱ期胃癌的PTEN蛋白阳性表达率高于Ⅲ期、Ⅳ期的;无淋巴结转移组胃癌的PTEN阳性表达率高于淋巴结转移组的;胃癌组织PCNA标记指数为(86.7±12.3)%,高于胃炎黏膜的PCNA标记指数;PTEN蛋白表达阴性的胃癌细胞PCNA的标记指数高于PTEN蛋白表达阳性者。胃癌患者生存年限>5aPTEN蛋白阳性表达率高于生存年限<5a者。结论:PTEN蛋白的表达缺失与胃癌的发生、分化、转移和预后密切相关,胃癌PTEN蛋白表达与PCNA表达呈负相关。     

胃癌组织中Angiopoietin-2、TRAIL与凋亡关系的研究

目的研究血管生成素-2(Angiopoietin-2)、肿瘤坏死因子相关凋亡诱导配体(TNF related apoptosis indueing ligand,TRAIL)在胃癌组织中的表达,探讨二者与细胞凋亡的关系.方法应用免疫组化技术检测67例胃腺癌组织中及相对应的正常胃黏膜中Angiopoietin-2、TRAIL蛋白的表达,用原位末端标记(TUNEL)技术检测癌组织中的凋亡指数(AI).结果angiopoietin-2在胃癌组织中明显表达(52.39%),而在癌旁正常黏膜呈弱表达(7.46%),低分化癌的angiopoietin-2的表达水平高于中高分化癌,有淋巴结转移者的angiopoietin-2的表达高于无淋巴结转移者(P均<0.05).TRAIL在正常胃黏膜中的阳性表达率97.01%高于癌组织中的阳性表达率47.76%(P<0.05);TRAIL蛋白的表达与肿瘤的分化程度有关,分化程度越低,TRAIL的表达率越低(P<0.05),TRAIL蛋白表达与胃癌的直径、部位、大体分型,浸润深度及有无淋巴结转移及患者的年龄、性别无关(P>0.05).胃癌组织中细胞凋亡指数为1.85±0.66.angiopoietin-2蛋白表达阳性组与阴性组、TRAIL蛋白阳性组与阴性组中凋亡指数分别存在着显著性差异(P<0.05);Angiopoietin-2与TRAIL蛋白表达之间无明显的相关性(rs=0.112,P>0.05).结论Angiopoientin-2可抑制肿瘤细胞凋亡,促进肿瘤的恶性进展;TRAIL可诱导胃癌细胞发生凋亡.     

进展期胃癌血管内皮生长因子C、D表达和淋巴结转移的关系

目的研究血管内皮生长因子C、D（VEGF-C、D）在进展期胃癌中的表达并探讨其与淋巴结转移的关系。方法应用免疫组织化学EnVision TM两步法对88例进展期胃癌手术病例进行研究,其中淋巴结转移阳性组50例,淋巴结转移阴性组38例。另设正常胃黏膜对照组（n=10）。检测正常胃黏膜和两组进展期胃癌标本VEGF-C、D的表达。结果在进展期胃癌组织中,VEGF-C、D呈阳性表达,阳性表达率分别为52%和62.5%。与正常组比较,胃癌中VEGF-C、D阳性表达率明显升高,差异有统计学意义（均P〈0.05）。在伴淋巴结转移的进展期胃癌中,VEGF-C阳性表达率较无淋巴结转移者更高,差异有高度统计学意义（P〈0.01）;VEGF-D阳性表达率在伴淋巴结转移者与无淋巴结转移者比较,差异统计学意义（P〉0.05）。Logistic回归分析发现与胃癌区域淋巴结转移相关的自变量有4个,根据与淋巴结转移的相关联系强度（由OR反映）、促进淋巴结转移的贡献大小（由标准回归系数反映）决定VEGF-C表达对进展期胃癌淋巴结转移贡献最大,相关联系强度较高（P〈0.001）。结论进展期胃癌组织中有VEGF-C、D阳性高表达,VEGF-C的表达与进展期胃癌淋巴结转移密切相关,但VEGF-D的表达与进展期胃癌淋巴结转移无关。     

胃癌Survivin 、COX-2 蛋白的表达及其相关性分析

[目的]探讨胃癌中Survivin蛋白表达与胃癌生物学行为及凋亡相关蛋白COX-2和凋亡指数(AI)的相关性.[方法]应用免疫组化SP法检测51例胃癌组织、47例非癌胃黏膜组织中Survivin和COX-2的表达,应用TUNEL法检测AI.[结果]Survivin蛋白在胃癌组织中的阳性表达率为70.58%较非癌胃黏膜组的36.17%明显增高(P＜0.05),COX-2在胃癌组织中的阳性表达率为68.63%较非癌胃黏膜组的30.04%明显增高(P＜0.05).Survivin蛋白在有淋巴结转移组阳性表达率显著高于无淋巴结转移组(94.59%vs 28.57%,P＜0.05),侵及浆膜组阳性表达率明显高于未及浆膜组(78.04%vs 40.00%,P＜0.05),且在Ⅲ-Ⅳ期胃癌病人Survivin阳性表达率明显高于Ⅰ～Ⅱ期(88.57%vs 31.25%,P＜0.05),COX-2蛋白在淋巴结转移组阳性表达率明显高于无淋巴结转移组(78.38%vs28.57%,P＜0.05),且Ⅲ-Ⅳ期病人阳性表达率明显高于Ⅰ～Ⅱ期(77.14%vs 37.50%,P＜0.05).Survivin阳性表达与COX-2阳性表达呈正相关(rs=0.32,P＜0.05).Survivin阳性组的平均AI明显低于阴性组(P＜0.05),而COX-2阳性组的平均AI明显高于阴性组(P＜0.05).[结论]Survivin和COX-2蛋白与胃癌的发生及其恶性演变有关,检测Survivin和COX-2蛋白有利于判断胃癌的恶性程度和预后.     

胃癌中PTEN、IGF-1、IGF-1R蛋白表达及其预后意义评价

目的 探讨PTEN、IGF-1、IGF-1R蛋白表达在胃癌发生、发展、侵袭转移及预后评价中的作用.方法 随访手术胃癌患者,应用免疫组化方法检测有随访资料的胃癌组织和正常胃黏膜组织中PTEN、IGF-1、IGF-1R蛋白的表达.结果 胃癌组织中PTEN表达降低,IGF-1、IGF-1R表达增高;PTEN、IGF-1、IGF-1R表达与胃癌临床生物学行为有关,PTEN蛋白表达在无淋巴结转移组高于淋巴结转移组,Ⅰ～Ⅱ期组高于Ⅲ～Ⅳ期组.IGF-1、IGF-1R蛋白表达在进展期胃癌组高于早期胃癌组,低分化组高于高中分化组,有淋巴结转移组高于无淋巴结转移组;Ⅰ～Ⅱ期组低于Ⅲ～Ⅳ期组;进展期胃癌中PTEN蛋白表达阳性患者生存率优于阴性患者,IGF-1、IGF-1R蛋白表达阳性患者生存率差于阴性患者.结论 PTEN、IGF-1、IGF-1R蛋白表达改变在胃癌发生、发展中起一定作用,可以帮助判断预后.     

MUC1、MUC2、MUC6、CDX2在胃印戒细胞癌中的表达及意义

目的:检测胃印戒细胞癌组织中MUC1、MUC2、MUC6、CDX2表达状况,探讨四者的表达状况及其与浸润、转移的关系,为临床诊治提供依据。方法:对50例正常胃黏膜组织和80例癌组织进行黏液组化染色,检测两组表型的表达状况,结合两组的免疫组化检测胃免疫表型标记MUC1、MUC6和肠免疫表型标记MUC2、CDX2的表达水平,分析四者与临床病理参数的关系。结果:癌组织中MUC2和CDX2的表达率明显高于正常胃黏膜组织,而MUC1、MUC6的表达率明显低于正常胃黏膜组织。CDX2在T1期的阳性表达率为12.5%,在T2+T3+T4期的阳性表达率为41.7%;CDX2在直径>3.0cm癌组织中的阳性表达率为43.6%,在直径≤3.0cm癌组织中的阳性表达率为34.1%;CDX2在Ⅰ+Ⅱ期的阳性表达率为28.6%,在Ⅲ+Ⅳ期的阳性表达率为44.2%。MUC2在T1期的阳性表达率为25.0%,在T2+T3+T4期的阳性表达率为48.6%;MUC2在无淋巴结转移组的阳性表达率为32.6%,在淋巴结转移组的阳性表达率为62.2%。结论:在生物学行为和预后方面,胃印戒细胞癌与胃、肠表型标记存在密切关系,故检测MUC1、MUC2、MUC6、CDX2表达对判断胃印戒细胞癌的预后及早期诊断有重要价值。     

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.