胃癌组织中COX-2的表达和微血管密度的关系探讨

目的 :探讨 COX- 2在胃癌中的表达及其与胃癌血管生成的关系。方法 :用免疫组化 SP法检测 45例胃癌、癌旁组织 COX- 2和微血管密度 ( MVD)的阳性表达。结果 :胃癌组织 COX- 2的阳性表达率 ( 77.78% )和 MVD( 5 8.1 3± 1 9.99)明显高于癌旁组织 ( 33.33% ,2 4 .0 2± 1 0 .2 8,P<0 .0 1 ,P<0 .0 5 )。36例有局部淋巴结转移者 COX- 2阳性表达率和MVD明显高于无转移者 ( 86.1 1 % vs 44.44% ,5 8.60± 1 8.2 4 vs 43.5 4± 1 5 .0 5 ,P<0 .0 5 ,P<0 .0 5 ) ;浸润达浆膜层者 COX- 2阳性表达率和 MVD明显高于未达浆膜层者 ( 87.88%vs 5 0 .0 % ,5 7.0 1± 1 8.79vs 42 .35± 1 4.65 ,P<0 .0 5 ,P<0 .0 5 )。COX- 2 ( + )组 MVD( 61 .2 9± 1 4.31 )显著高于 COX- 2 ( - )组 ( 4 5 .38± 1 2 .42 ,P<0 .0 5 ) ,COX- 2与 MVD显著正相关( P<0 .0 1 )。结论 :COX- 2与胃癌的发生及侵袭、转移有关 ;可能通过参与胃癌血管生成 ,促进胃癌的发生发展     

大肠癌血管内皮生长因子的表达与微血管密度的研究

目的:探讨大肠癌血管内皮生长因子(VEGF)的表达,微血管生成及其与临床病理参数的关系。方法:采用组织芯片及S-P免疫组化法应用VEGF多克隆抗体、CD34多克隆抗体,检测30例大肠腺癌及10例正常大肠组织中VEGF的表达,计数微血管密度(MVD)。结果:大肠癌中VEGF表达阳性率明显高于正常的大肠黏膜,分别为90%和20%,P<0.05。大肠癌中的MVD明显高于正常大肠黏膜,分别为:59.8±8.7和18.2±1.7,P<0.05。VEGF阳性者MVD显著高于VEGF阴性者,VEGF表达率和MVD与大肠癌Dukes分期、浸润深度密切相关,P<0.05。结论:VEGF表达与大肠癌血管生成有关,大肠癌的发生发展依赖血管生成。MVD可作为大肠癌的预后因素。     

凝血栓蛋白-2的表达与结直肠癌血管生成、转移的关系

目的 :探讨凝血栓蛋白 - 2 (TSP- 2 )在结直肠癌中的表达及与微血管密度(MVD)、转移之间的关系。方法 :用 SP免疫组化法 ,检测了 41例手术切除的原发性结直肠腺癌组织和 2 0例癌旁组织中的 TSP- 2表达及 MVD改变。结果 :结直肠腺癌组织中存在活跃的血管生成 ,MVD和 TSP- 2阳性表达均与结直肠腺癌患者的转移明显有关 ,TSP- 2表达与 MVD成负相关。结论 :TSP- 2表达与结直肠腺癌的血管生成和转移密切相关。TSP- 2和 MVD是反映结直肠腺癌病情进展、转移潜能的生物学指标。     

Ki67、P53及微血管密度在大肠肿瘤中的表达

目的 研究Ki67、P53及微血管密度(microvessel density,MVD)在大肠肿瘤中的表达,探讨其与大肠肿瘤癌变的关系及作为早期癌变生物学标志物的可能性。方法 采用免疫组化技术分别测定正常大肠黏膜、大肠息肉及大肠癌组织标本中Ki67、P53及MVD值,共80例,分析其变化规律及相关性。结果 在正常黏膜、大肠息肉、大肠癌组中的Ki67标记指数逐渐增高(分别为11.00±10.70、39.64±17.70、52.96±26.40),组间比较差异显著(P=0.0001)。正常黏膜组P53蛋白均为阴性,大肠癌组P53蛋白表达的阳性率明显高于息肉组(P=0.0001)。Ki67、P53蛋白表达与性别、年龄、病程、病变部位、大小、大肠癌的病理类型、Dukes分期均无相关性。正常黏膜、大肠息肉、大肠癌组的MVD值(14.80±5.10、19.70±7.84、36.56±20.40)逐渐上升,3组差别显著(P=0.0001)。大肠癌中Dukes C、D期的MVD值(40.56±3.49)明显高于A、B期(29.50±2.45)(P=0.016)。Ki67与P53在各种组织中的表达呈正相关(r=0.5149,P=0.015)。联合检测Ki67及P53鉴别大肠良恶性病变的敏感度(70.37％)低于单侧Ki67(96.30％),但特异度(94.34％)明显增高。结论 Ki67标记指数可反映细胞增殖状态,指数高的大肠腺瘤易发生癌变。MVD值高的大肠癌易发生转移,MVD可作为判断大肠癌预后的参考指     

胃腺癌组织中缺氧诱导因子-1α的表达及其与细胞增殖和血管形成的关系

目的:探讨缺氧诱导因子1α(HIF1α)在胃腺癌组织中的表达及其与细胞增殖、血管形成的关系。方法:应用免疫组织化学SP法检测64例胃腺癌组织及20例癌旁正常组织中HIF1α、细胞核增殖抗原(Ki67)表达及微血管密度(MVD),并分析HIF1α表达与Ki67、MVD的相关性。结果:HIF1α蛋白在正常胃组织中不表达,在胃腺癌中的阳性表达率为70.3%(45/64),其阳性表达与胃腺癌淋巴结转移、临床病理分期有关,其阳性表达率淋巴结转移组88.6%(31/35)显著高于无淋巴结转移组48.3%(14/29)(P<0.01),临床Ⅲ+Ⅳ期阳性表达率94.1%(32/34)显著高于临床Ⅰ+Ⅱ期43.3%(13/30)(P<0.01)。HIF1α表达与Ki67、MVD呈正相关(r=0.439,P<0.01和r=0.582,P<0.05)。结论:HIF1α在胃腺癌组织中表达明显升高,并与肿瘤细胞增殖和血管形成密切相关,提示它可能在胃癌的发生发展及恶性演进过程中起重要作用。     

乳癌组织中基质金属蛋白酶-2与微血管密度测定

目的:探讨乳癌组织中基质金属蛋白酶 -2 (MMP -2 )的表达水平与肿瘤血管形成及预后的关系。方法:采用SP免疫组化方法,分别应用抗MMP- 2及CD34单克隆抗体检测 68例乳癌组织中MMP- 2的表达和微血管密度(MVD),另选 10例乳腺良性病变作对照,并与组织学分级、腋窝淋巴结转移及 5a生存率进行相关分析。结果: 乳癌组织中MMP 2的阳性表达率为 76. 5%,对照组表达率 10%, 2组间差异有统计学意义 (P<0. 001);乳癌组织中MVD为 56. 84±15. 57,对照组为 34. 52±9. 57, 2组间差异有统计学意义 (P<0. 01)。MMP 2及MVD表达与乳癌组织学分级呈正相关(r分别为 0. 729, 0. 528,P均 <0. 01 );也与腋窝淋巴结转移相关 (r分别 0. 759, 0. 448P<0. 05); MMP- 2阳性表达率与 5a生存率呈负相关 (P<0. 05 ); MMP- 2高表达组MVD值大于MMP 2低表达组(P<0. 05)。结论:MMP -2的表达与肿瘤血管形成及乳癌患者预后关系密切。     

胃腺癌组织中MVD、VEGF及细胞胀亡检测

目的 :检测胃腺癌组织中微血管密度 (MVD)、血管内皮细胞生长因子 (VEGF)与胀亡。方法 :用免疫组织化学方法检测 4 0例胃腺癌组织中MVD和VEGF的表达 ,用透射电镜检测胃癌细胞的胀亡情况。结果 :4 0例胃癌组织中 ,MVD 9～ 78,平均 (36 .5± 1 6 .5 ) ;1 6例VEGF表达阳性 ,阳性率为 4 0 %。胃癌组织中可出现不同时期的胀亡细胞 ,胀亡指数为 (2 .5 94± 0 .1 5 7)。VEGF的表达与胀亡细胞的发生呈负相关 (P <0 .0 5 )。结论 :胃癌组织中血管形成抑制了细胞胀亡的发生。     

c-Met在大肠癌中的表达及在大肠癌发生发展中的作用

目的研究肝细胞生长因子(HGF)受体即c-Met在大肠癌组织中的表达及其与微血管密度(MVD)的关系,探讨c-Met在大肠癌发生、发展中的作用。方法采用RT-PCR方法检测大肠癌组(80例)、大肠腺瘤组(60例)及大肠正常黏膜组(40例)3组组织中c-Met mRNA的表达,应用免疫组织化学法检测组织中c-Met蛋白和以CD105为标记的MVD的表达,评价c-Met和MVD表达与大肠癌临床病理指标的关系。结果 c-Met在71.3%(57/80)的大肠癌组织和31.7%(19/60)的大肠腺瘤组织和17.5%(7/40)大肠正常黏膜组织中呈阳性表达。大肠癌组织中c-Met在mRNA水平和蛋白水平均高于大肠腺瘤组织和大肠正常黏膜组织(P<0.01)。c-Met和MVD的表达与大肠癌的淋巴结转移、浸润深度、分化程度和Dukes分期相关(P<0.05),而与患者的性别、年龄、原发部位及肿瘤大小无关(P>0.05)。c-Met表达与微血管密度呈正相关(r=0.034 6,P<0.05),c-Met表达阳性的组织中MVD值高于c-Met表达阴性者(P<0.01)。大肠癌伴肝转移者c-Met和MVD的表达明显高于无肝转移者(P<0.01)。结论 c-Met在大肠癌的侵袭与转移中可能发挥着重要作用,联合检测c-Met和MVD的表达有助于大肠癌预后的判断。     

食管鳞癌组织中COX-2的表达

目的:探讨COX-2在食管鳞癌发生、转移及血管形成过程中的作用。方法:采用免疫组织化学方法检测20例正常食管黏膜,6例轻中度、6例重度不典型增生组织及41例食管鳞癌组织中COX-2蛋白的表达,同时对食管鳞癌组织行微血管密度(MVD)测定。结果:正常食管黏膜组织中COX-2不表达;轻中度不典型增生组织,重度不典型增生组织及食管鳞癌组织中COX-2的阳性表达率分别为1/6,3/6,22/41,依次增加(P<0.05)。不同分化程度和浸润深度食管鳞癌组织中,COX-2阳性表达率差异无统计学意义,但有淋巴结转移组的阳性表达率(73.7%)高于无淋巴结转移组(36.4%)(P<0.05)。COX-2阳性食管鳞癌组织中MVD值(39.27±14.80)高于阴性者(22.21±7.97)(t=4.467,P<0.05)。结论:COX-2表达可能是食管鳞癌发生过程中的早期事件,与淋巴结转移和肿瘤组织新生血管的形成有关,与细胞分化程度和浸润深度无关。     

微血管密度和血管套及血管内皮生长因子在子宫颈癌中的表达

目的 :研究微血管密度 (MVD)、血管套 (VC)和血管内皮生长因子 (VEGF)在子宫颈癌组织中的表达与子宫颈癌的生长、浸润及转移的关系。方法 :采用免疫组织化学方法 (SP)检测 5 7例子宫颈癌 (鳞癌 30例、腺癌 2 0例、腺鳞癌 7例 ) ,2 9例宫颈上皮内肿瘤 (CIN)和 16例正常子宫颈组织中 VEGF蛋白的表达 ,以 CD34抗原作为血管内皮细胞标记 ,测定其微血管密度及癌巢与基质间的血管套。结果 :随着宫颈病变的进展 ,MVD逐渐增高 ,VC表现明显 ,VEGF的阳性表达率渐增高。MVD在以上 5组间差异有显著性 (P<0 .0 1)。正常组 VC与各组癌之间差异有显著性 (P<0 .0 1)。 VEGF在正常宫颈组织、CIN、子宫颈鳞癌、腺癌、腺鳞癌细胞浆中的阳性表达率分别为 :18.8% (3/ 16)、82 .8% (2 4 / 2 9)、93.3% (2 8/ 30 )、10 0 % (2 0 / 2 0 )、7/ 7(10 0 % ) ,差异有显著性 (P<0 .0 1)。 MVD与VEGF的表达呈正相关 (rs=0 .335 ,P<0 .0 1) ,VEGF的不同表达强度与 MVD的表达量间差异均有显著性 (P<0 .0 1)。子宫颈癌淋巴转移者 MVD的表达量较阴性者高 (P<0 .0 5 )。结论 :VEGF在子宫颈癌的发生发展中有促进血管形成作用 ,MVD与子宫颈癌的恶性程度密切相关。     

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.