PDGF-BB促进人卵巢癌微血管内皮细胞增殖及PCNA、VEGF表达的实验研究

目的研究血小板源性生长因子BB（PDGF—BB）对人卵巢癌微血管内皮细胞（OdMEC）增殖、增殖细胞核抗原（PCNA）和血管内皮生长因子（VEGF）表达影响。方法体外分离培养OdMEC,施加不同浓度的PDGF—BB（0,5,10,20,50ng／ml）,采用四甲基偶氯唑（MTT）法测定细胞生长曲线;免疫细胞化学及RT—PCR方法检测PCNA和VEGF表达的变化。结果PDGFBB能促进OdMEC的增殖,呈剂量依赖性,以20ng／ml最为明显（P〈0．05）。在20ng／ml PDGF-BB刺激下,PCNA和VEGF的表达均高于对照组,差异有统计学意义（P〈0．05）。结论PDGF—BB促进OdMEC的增殖、PCNA和VEGF的表达。     

人脑星形胶质细胞瘤血管内皮生长因子表达、血管生成及细胞增殖活性的研究

目的 研究血管内皮生长因子(VEGF)和增殖细胞核抗原(PCNA)在星形细胞瘤中的表达,探讨VEGF与肿瘤血管生成和细胞增殖的关系.方法 SP免疫组化法对64例星形细胞瘤的VEGF和PCNA表达进行观察.CD31单克隆抗体免疫组化染色显示微血管,用微血管计数(MVC)测定肿瘤血管生成.结果 VEGF蛋白主要分布在高级别胶质瘤组织的瘤细胞和内皮细胞,低级别胶质瘤呈低表达,且与PCNA的表达成显著正相关(r=0.991,P＜0.01);高级别胶质瘤MVC显著高于低级别胶质瘤.结论 VEGF可能参与胶质瘤血管生成,对胶质瘤的恶性进展起促进作用,PCNA较能客观地反映肿瘤的恶性程度.     

MVD、VEGF及PCNA在不同性质大肠粘膜的表达及其临床意义

目的:探讨微血管密度(MVD)、血管内皮细胞生长因子(VEGF)及增殖细胞核抗原(PCNA)在人不同性质大肠粘膜中的表达及其临床意义.方法:用免疫组织化学方法(S-P法)测定59例大肠癌、16例大肠腺瘤以及12例正常大肠标本中的表达.结果:大肠癌MVD、VEGF及PCNA的表达高于大肠腺瘤的表达,有显著性差别(P＜0.05).不同Dukes分期间大肠癌MVD及VEGF差异有显著性意义(P＜0.05);与有无淋巴结、肝转移密切相关,在术后复发与无复发生存者间差异有显著性意义(P＜0.05).PCNA提示,分化越差,有淋巴结或肝转移时,增殖活性增高;术后复发与无复发生存者间增殖活性差异有显著性意义(P＜0.05).结论:MVD、VEGF及PCNA的表达增加,提示大肠肿瘤恶变和发生转移的能力增强.大肠癌MVD、VEGF及PCNA增加,手术后复发和转移的机会增多.     

VEGF,bFGF及PCNA在宫颈癌中的表达及其与肿瘤增殖和血管生成的关系

目的 :探讨有关细胞因子在调控宫颈癌增殖及其血管生成中的作用。方法 :应用免疫组织化学及其组织形态学定量分析方法 ,对血管内皮细胞生长因子 (VEGF) ,碱性成纤维细胞生长因子(b FGF)和增殖细胞核抗原 (PCNA)在宫颈癌中的表达进行研究。结果 :1肿瘤细胞增殖与 VEGF的表达呈正向关系 ,而与 b FGF的表达无关 ;2 VEGF,b FGF的表达分别与微血管密度有正相关性 ,而当 VEGF和 b FGF共同表达时 ,微血管密度显著增加 ;3VEGF,b FGF在不同个体的表达具有异质性。结论 :VEGF有促进肿瘤细胞增殖及血管生成的作用。VEGF,b FGF在肿瘤血管生成过程中可能起协同作用     

骨髓瘤细胞对血管内皮细胞的促生长作用及机制

目的:研究多发性骨髓瘤细胞对人内皮细胞增殖、迁移、血管生成及对内皮细胞AKT、pAKT蛋白水平的影响。方法:采用多发性骨髓瘤细胞株U266与人脐静脉内皮细胞(HUVEC)混合共培养;以同期单独培养的HUVEC为对照,用CCK-8、划痕试验检测共培养组和对照组HUVEC的增殖、迁移能力。观察在Matrigel基质中两组HUVEC管状结构生成的情况;Western blot方法检测共培养组和对照组HUVEC AKT、pAKT的蛋白表达水平。结果:与同期单独培养的HUVEC相比,共培养体系中的HUVEC细胞增殖明显增加,共培养组HUVEC迁移能力明显增强(125±21/视野vs.332±37/视野),共培养组HUVEC管状结构形成数量明显增加(小管数量分别为3.7±1.3/视野vs.8.3±2.7/视野)。共培养体系中HUVEC pAKT表达水平明显升高,AKT表达无明显变化。结论:骨髓瘤细胞能明显促进血管内皮细胞增殖、迁移和血管生成。多发性骨髓瘤促进HUVEC增殖、迁移和血管生成的作用与AKT信号通路有关。     

骨肉瘤VEGF表达及VEGF抗体抑制血管生成的实验研究

目的研究血管内皮生长因子（VEGF）表达与骨肉瘤血管生成和预后的关系,以及VEGF抗体抑制骨肉瘤细胞OS-732诱导血管生成的作用和可能机制,为以VEGF为靶点治疗骨肉瘤提供实验依据。方法应用免疫组化和形态计量方法,检测80例骨肉瘤VEGF表达、肿瘤微血管密度（MVD）,以及OS-732血管生成相关因子的表达。进一步应用鸡胚绒毛尿囊膜（CAM）模型观察VEGF抗体对OS-732诱导血管生成及肿瘤细胞生长的抑制作用。结果（1）骨肉瘤VEGF表达与肿瘤微血管密度（MVD）及预后密切相关。（2）OS-732表达VEGF和BFGF,而且VEGF表达强度明显高于BFGF,OS-732具有很强的诱导血管生成能力。（3）VEGF抗体干预实验结果显示VEGF抗体组肿瘤区血管密度明显低于PBS对照组,细胞凋亡指数显著高于PBS对照组,而增殖指数两组差异无统计学意义。同时,VEGF抗体组凋亡的微血管内皮细胞增多,增殖期内皮细胞少见。结论VEGF是骨肉瘤重要的血管生成因子,其表达可能是评估骨肉瘤预后的一项有价值的指标。VEGF抗体能够抑制内皮细胞增殖,促进内皮细胞凋亡,显著抑制骨肉瘤OS-732血管形成,并可能通过抑制血管形成而促进肿瘤细胞凋亡,达到抑制瘤细胞生长的作用。该结果提示VEGF可以作为骨肉瘤抗血管生成治疗的潜在靶分子。     

阿糖胞苷对增殖期血管瘤中VEGF和PCNA表达的影响

目的探讨阿糖胞苷对增殖期血管瘤中血管内皮细胞生长因子（VEGF）和增殖细胞核抗原（PCNA）表达的影响。方法将27例增殖期血管瘤患儿随机分为对照组和实验组。实验组于瘤体注射药后21天手术切除瘤体,对照组直接手术切除瘤体。染色后,显微镜下观察瘤体组织中VEGF和PCNA的表达情况。结果实验组PCNA阳性表达率13.33%,VEGF阳性表达率20%;对照组PCNA阳性表达率83.33%,VEGF阳性表达率100%;两组之间的VEGF及PCNA表达差异显著（P〈0.01）。结论通过瘤体内注射阿糖胞苷后明显抑制增殖期血管瘤体组织中血管内皮细胞生长因子（VEGF）和增殖细胞核抗原（PCNA）表达,促进血管瘤体消退。     

抗VEGF抗体对骨肉瘤OS-732细胞血管生成及其肿瘤细胞增殖、凋亡的影响

目的：探讨阻断血管内皮生长因子（Vascular endothelial growth factor,VEGF)的血管生成作用对骨肉瘤OS-732细胞及血管内皮细胞增殖、凋亡的影响。方法：应用鸡胚绒毛尿囊膜（CAM）模型,通过解剖显微镜血管计数,光镜HE染色,原位末端标记及PC-NA免疫组化检测观察VEGF抗体对骨肉瘤血管生成及肿瘤增殖,凋亡状态的影响。结果：VEGF抗体组肿瘤区血管数目及瘤细胞数显著低于PBS对照组,肿瘤细胞凋亡指数显著高于PBS对照组,增殖指数两组差异不明显,同时VEGF抗体组凋亡的微血管内皮细胞增多,增殖期微血管内皮细胞少见。结论：VEGF抗体能显著抑制骨肉瘤OS-732血管生成,抑制内皮细胞增殖,促进内皮细胞凋亡,可能是VEGF抗体发挥抗血管生成作用的途径之一,并可能通过抑制血管形成而促进肿瘤细胞凋亡,最终达到抑制瘤细胞生长的作用。     

阿魏酸钠对小鼠H22肝癌生长的抑制作用及其机制研究

目的 观察注射用阿魏酸钠对小鼠H22肝癌生长及血管生成抑制作用及其对血管内皮生长因子(VEGF)Mrna转录的影响.方法 昆明小鼠前腋下皮下接种H22小鼠肝癌细胞,腹腔注射阿魏酸钠,每3 d测量1次肿瘤体积.用免疫组化法测定VEGF及增殖细胞核抗原(PCNA)的表达.MTT法检测阿魏酸钠对H22肿瘤细胞及血管内皮细胞(ECV304)增殖的影响,RT-PCR法测定肿瘤组织的VEGF Mrna的转录.结果 阿魏酸钠组小鼠H22肿瘤体积、重量增长明显较对照组缓慢(P＜0.05),同时阿魏酸钠组的肿瘤微血管密度及VEGF、PCNA阳性细胞较对照组显著减少(P＜0.05).阿魏酸钠组VEGF Mrna转录比对照组显著减少(P＜0.05).体外实验,阿魏酸钠对ECV304及H22细胞的增殖均无显著抑制作用.结论 阿魏酸钠可以显著抑制小鼠H22肿瘤的生长及血管生成,且能抑制VEGF的表达,但不能抑制ECV304及H22细胞的增殖.阿魏酸钠对肿瘤组织VEGF表达的抑制作用可能是其抗H22肿瘤及抗血管生成的一个重要机制.     

黄芪与当归对人脐静脉内皮细胞增殖及VEGF表达的影响

目的: 探讨黄芪与当归对内皮细胞(ECs)增殖周期及血管内皮细胞生长因子(VEGF)表达的影响。方法: 以体外培养人脐静脉内皮细胞(HUVEC)为模型,HUVEC经分离、原代和传代培养与鉴定,选择第4 或第5代细胞进行实验;MTT法检测不同剂量黄芪与当归对细胞增殖的影响;流式细胞仪检测黄芪与当归对HUVEC增殖周期的影响;半定量RT PCR检测黄芪与当归对HUVEC的VEGF mRNA表达的影响。结果:细胞周期检测显示黄芪及当归组S期细胞数显著增多(P<0.01)。黄芪+当归组G0 G1 期细胞数明显减少(P<0.05),S期和G2 M期细胞数明显增多(P<0.05)。RT PCR结果表明,黄芪与当归使HUVEC的VEGF mRNA表达明显增强,黄芪+当归(200μg/ml)组是对照组的1.82倍;当归(200μg/ml)组是对照组的1.88倍;黄芪(200μg/ml)组是对照组的1.51倍。结论:黄芪与当归及其复方具有促进内皮细胞增殖作用,黄芪+当归可明显促进HUVEC的DNA合成及有丝分裂。黄芪与当归可促进HUVEC的VEGF mRNA表达,提示黄芪与当归通过刺激VEGF表达而促血管新生。     

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…     

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.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.