APC基因表达异常在国人大肠肿瘤形成中的作用研究

应用免疫组化和斑点杂交技术检测３０例大肠癌和１５例大肠腺瘤ｍＲＮＡ和蛋白表达水平，结果显示ｐ３００ＡＰＣ在大肠正常粘膜，腺瘤和癌组织的表达分别为７０％、６６．７％、２０％，在伴有重要度非典型性增生腺瘤中的２５％。     

大肠粘膜癌前病变PCNA和C－erbB－2癌基因蛋白检测及其意义

应用免疫组化技术检测８２例大肠腺瘤（伴有或不伴有非典型增生）、５７例大肠高分化腺癌的ＰＣＮＡ和Ｃ－ｅｒｂＢ－２癌基因蛋白表达。结果表明：在良性组、癌前病变组及恶性组中，ＰＣＮＡ指数（８．７５％，２８．７３％，６６．３２％）明显递增（Ｐ＜０．０１），Ｃ－ｅｒｂＢ－２阳性率（１８．２％，３６．７％，５０．９％）也逐渐增加（Ｐ＜０．０５）。在癌前病变组内，轻、中、重度非典型增生的ＰＣＮＡ指数（１５．３７％，２９．９５％，４０．１１％）亦有显著差异（Ｐ＜０．０１）．Ｃ－ｅｒｂＢ－２阳性率（２５％，３５％，５０％）依次呈递增趋势，重度非典型增生Ｃ－ｅｒｂＢ－２阳性率与恶性组相近。结果提示：ＰＣＮＡ表达程度与非典型增生密切相关，是反映细胞增殖的良好标志，ＰｃＮＡ和Ｃ－ｅｒｂＢ－２过度表达与大肠腺瘤恶性倾向有关。ＰＣＮＡ和Ｃ－ｅｒｂＢ－２组化研究有助于认识大肠癌前病变的本质和监测高危人群并早期发现腺瘤恶变。     

大肠粘膜癌前病变PCNA和C—erbB—2癌基因蛋白检测及其意义

应用免疫组化技术检测８２例大肠腺癌，５７例大肠高分化腺癌的ＰＣＮＡ和Ｃ－ｅｒｂ－２癌基因蛋白表达。结果表明：在良性组，癌前病变组及恶性组中，ＰＣＮＡ指数明显递增，Ｃ－ｅｒｂＢ－２阳性率也逐渐增加。在癌前病变组内，轻，中，重度非典型增生的ＰＣＮＡ指数亦有显著差异，Ｃ－ｅｒｂＢ－２阳性率依次呈递增趋势，重度非典型增生Ｃ－ｅｒｂ－Ｂ－２阳性率与恶性组相近。     

p53蛋白及增殖细胞核抗原在大肠腺瘤的表达及其意义

目的：探讨ｐ５３基因蛋白和增殖细胞核抗原（ＰＣＮＡ）在大肠腺瘤的表达及其临床病理学意义。方法：用免疫组织化学方法,对４５例大肠腺瘤进行ｐ５３蛋白和ＰＣＮＡ的检测,并以大肠腺癌为对照。结果;ｐ５３蛋白在轻度不典型大肠腺瘤无一例阳性表达随着腺瘤不增生程度增高,其ｐ５３蛋白阳性表达率也增高,重度不典型增生腺瘤与腺癌的ｐ５３蛋白阳性率差异无显著（Ｐ〈０．０５）。ＰＣＮＡ增殖指数也是随腺瘤不典型增生程度的增     

结直肠癌缺陷基因蛋白在大肠肿瘤中的表达及临床意义

目的：探讨结直肠癌缺陷基因在大肠腺瘤－癌演序中的蛋白表达及其临床意义。方法：以结直肠癌缺陷基因蛋白胞内部分独特氨基酸链的单抗15041A为一抗，免疫组化ABC法检测21例大肠粘膜、40例伴不同程度不典型增生大肠腺瘤、21例大肠癌组织的蛋白表达情况。结果：结直怕癌缺陷基因蛋白表达率，大肠粘膜及轻度不典型增生大肠腺瘤100％，中度不典型增生腺瘤93％，明显高于重度不典型增生腺瘤（45％）及大肠瘤（33％），P＜0．05。结论：结直肠癌缺陷基因蛋白表达缺失与大肠腺瘤演变及大肠癌发展相关，免疫组化法检测结直肠癌缺陷基因蛋白发现癌前病变，研究大肠瘤演变及大肠癌发展具有重要意义。     

大肠腺瘤-癌序列中抗凋亡基因Survivin的表达

目的：研究大肠癌发生过程中不同病理阶段(增生性息肉、腺瘤和腺癌)抗凋亡基因Survivin的表达情况。方法：应用免疫组化SABC法检测12例正常大肠黏膜、6例增生性息肉、22例腺瘤和32例腺癌的石蜡标本中Survivin表达情况。结果：Survivin在正常大肠黏膜无1例表达，在增生性息肉、腺瘤和腺癌中的阳性率分别为16.7％(1／6)、77.3％(17／22)和68．8％(22／32)；大肠腺癌组和大肠腺瘤组中Survivin表达显著高于正常大肠黏膜组和增生性息肉组(P＜0．05)；大肠腺瘤组Survivin表达高于大肠癌组(P＜0．05)。结论：Survivin基因在大多数大肠腺瘤和腺癌中表达；Survivin的过度表达是大肠上皮癌变过程的早期事件之一。     

增殖细胞核抗原在大肠腺瘤和腺癌中的研究

用鼠抗ＰＣＮＡ单克隆抗体ＰＣ１０研究大肠肿瘤６０例，分成５且：腺瘤伴轻度不典型增生１０例，腺瘤伴中度不典型增生１３例，腺瘤伴重度不典型增生１２例，高分化腺癌１４例和中分化腺癌１１例。实验结果：（１）ＰＣＮＡ增殖活性在大肠腺癌组显著高于腺瘤组。（２）ＰＣＮＡ增殖活性在各腺癌组间，以及伴不同程度不典型增生腺瘤组间均无显著差异。（３）癌病例的结肠粘膜增殖类型均明显达到隐窝表面，而腺瘤病例多数达到表面，但     

大肠癌、大肠腺瘤Cyclin D1、P16和PCNA蛋白表达及其意义

探讨细胞周期调控因子蛋白表达在大肠癌发生发展中的作用及其对预后影响。方法采用免疫组化染色对１１３例大肠癌、１４例大肠腺瘤、１１例腺瘤癌变化组织中ＣｙｃｌｉｎＤ１,Ｐ１６和ＰＣＮＡ进行了检测。结果大肠癌、腺癌和癌变ＣｙｃｌｉｎＤ１,Ｐ１６以ＰＣＮＡ阳性表达率与大肠粘膜相比均相差异显著（Ｐ〈０．０５）腺瘤癌变ＣｈＣｌｉｎＤ１表达明显增高,大肠癌Ｐ１６表达明显降低,大肠癌、腺癌癌变的ＰＣＮ较腺癌组显著增     

PIK3CA蛋白在大肠癌变过程中的表达及临床意义

目的研究PIK3CA蛋白在大肠癌变过程中的表达差异及临床病理的相关性,探讨其临床意义。方法应用免疫组化方法检测PIK3CA蛋白在79例大肠癌、36例轻度异型增生腺瘤、32例重度异型增生腺瘤、12例正常大肠组织中的表达情况。结果①PIK3CA蛋白在大肠癌组织中的表达明显高于正常组织及轻度异型增生大肠腺瘤(P<0.01),与重度异型增生腺瘤间无明显差异(P>0.05)。重度异型增生腺瘤组织中PIK3CA蛋白的表达比轻度异型增生腺瘤及正常黏膜组织中的表达显著增高(P<0.01);②大肠癌组织中PIK3CA蛋白的表达与肿瘤的分化程度、临床分期及淋巴结转移等因素具有相关性(P<0.05),而与患者的性别、年龄、部位、肿瘤的大小及组织学类型等因素无关(P>0.05)。结论PIK3CA在大肠癌的发生发展过程中具有重要作用,检测PIK3CA对于大肠癌的早期诊断、判断预后有重要意义。     

表皮生长因子受体表达与大肠肿瘤的发生、细胞增殖的关系及其 …

目的 探讨表皮生长因子受体（ＥＣＦＲ）表达与晨肠肿瘤的发生、细胞增殖的关系及其临床病理学意义。方法 应用免疫组化技术（ＡＢＣ法）,检测１５例正常大肠粘膜、２８例癌旁粘膜、１１例大肠腺瘤、７２例大肠癌中ＥＧＦＲ表达和增殖细胞核抗原（ＰＣＮＡ）指数。结果 ①ＥＧＦＲ在正常粘膜、癌旁粘膜、大肠腺瘤及大肠癌中的阳性率分别为６．７％、１４．３％、４５．５％及４１．９％,大肠癌的阳性率明显高于正常粘膜和癌旁粘     

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.     

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.     

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     

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…     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.