自发性高血压大鼠主动脉血管平滑肌细胞异常增殖和自身肾素－血管紧张素系统的关系

目的以２０周龄自发性高血压大鼠（ＳＨＲ）和正常血压大鼠（ＷＫＹ）胸主动脉平滑肌细胞（ＡＳＭＣ）为模型，探讨ＳＨＲＡＳＭＣ异常增殖和自身肾素－血管紧张素系统（ＲＡＳ）的关系。方法用３Ｈ－ＴｄＲ参入量和倍增时间（ＤＴ）反映ＡＳＭＣ的增殖能力，放射免疫法测定血管紧张素Ⅱ（ＡｎｇⅡ）浓度，紫外分光光度法测定血管紧张素转换酶（ＡＣＥ）活性。结果（１）ＳＨＲＡＳＭＣ３Ｈ－ＴｄＲ参入量显著高于ＷＫＹ，ＤＴ显著短于ＷＫＹ（Ｐ＜０．０１）。基础状态下，ＳＨＲＡＳＭＣ合成ＡｎｇⅡ、ＡＣＥ以及分泌ＡｎｇⅡ的量显著高于ＷＫＹ（Ｐ＜０．０１）。（２）在含２％ＦＣＳ的培养基中，１０－６ｍｏｌ／ＬＡｎｇⅡ使ＳＨＲ、ＷＫＹ的３Ｈ－ＴｄＲ参入量分别提高到对照组的３．３倍、２．２倍（Ｐ＜０．０１），ＳＨＲＡＳＭＣ在不同浓度ＡｎｇⅡ刺激时的３Ｈ－ＴｄＲ参入量显著高于ＷＫＹ（Ｐ＜０．０１），１０－６ｍｏｌ／ＬＡｎｇⅡ使ＳＨＲＡＳＭＣ细胞数增加７２．５±２３．１％（Ｐ＜０．０１），ＷＫＹＡＳＭＣ细胞数无显著增加，１０倍浓度ＡｎｇⅡ的Ｓａｒａｌａｓｉｎ对ＳＨＲ、ＷＫＹ３Ｈ－ＴｄＲ参入的抑制率分别为６６．７±３．３％，４４．７±９．９％（Ｐ＜０．０１）     

自发性高血压大鼠不同脑区5—HT1A受体的结合特征

用放射性配基［＾３Ｈ］８－ＯＨ－ＤＰＡＴ结合实验显示，自发性高血压大鼠（ＳＨＲ）脑区的海马、延髓、下丘脑５－ＨＴ１Ａ受体的结合位点明显高于正常Ｗｉｓｔａｒ Ｋｙｏｔｏ（ＷＫＹ）大鼠，其中海马增加最多。在此基础上用抗高血压药普萘洛尔给ＳＨＲ灌胃，结果脑区不同部位受体结合参数、血压及心率都有不同程度的变化，更接近于ＷＫＹ大鼠。这说明ＳＨＲ与ＷＫＹ大鼠之间不同区５－Ｈ５１Ａ受体特异性差别可能与高血压的发     

大鼠自发性高血压和心肌肥厚时热休克蛋白70基因表达的研究

本工作采用热休克蛋白７０（ＨＳＰ７０）核酸分子杂交方法，检测了自发性高血压大鼠（ＳＨＲ）与其正常对照（ＷＫＹ）大鼠离体培养的主动脉平滑肌细胞（ＡＳＭＣ）受热刺激后以及大鼠腹主动脉缩窄后心肌肥厚时左心室ＨＳＰ７０ｍＲＮＡ的水平，并对ＳＨＲ和ＷＫＹ肝组织基因组ＤＮＡ进行了限制性酶切片断长度多态性（ＲＦＬＰ）分析。结果表明：ａ．３７℃培养的ＳＨＲＡＳＭＣ及整体ＳＨＲ肝组织ＨＳＰ７０ｍＲＮＡ的基础表达水平均低于ＷＫＹ大鼠，ＳＨＲＡＳＭＣ受热刺激（４２℃１５ｍｉｎ）后２ｈ，ＨＳＰ７０ｍＲＮＡ表达增加的程度明显大于ＷＫＹ大鼠。ｂ．大鼠腹主动脉缩后造成左室压力超负荷，左心室ＨＳＰ７０ｍＲＮＡ在压力超负荷４ｈ时已明显升高，１ｄ、２ｄ、１ｗ均维持在高水平，１ｗ后逐渐降低。ｃ．ＳＨＲ和ＷＫＹ鼠肝组织基因组ＤＮＡ经ＢａｍＨＩ酶切后，ＳＨＲＨＳＰ７０基因缺失一条约５．６ｋｂ的片段。提示：ＳＨＲＡＳＭＣ对热敏感性增加；压力负荷增加早期，左心室ＨＳＰ７０ｍＲＮＡ表达明显增加；ＨＳＰ７０基因结构异常可能与高血压发生有关。     

原癌基因c—fos和c—jun在血管平滑肌细胞增殖调控中的作用

体外培养大鼠血管平滑肌细胞（ＶＳＭＣ）。通过＾３Ｈ－ＴｄＲ参入实验和ＲＮＡ印迹分析，观察内皮素－１对ＶＳＭＣＤＮＡ合成，原癌基因ｃ－ｆｏｓ与ｃ－ｊｕｎ表达及ｃ－ｊｕｎ反义ＲＮＡ对ＶＳＭＣ增殖的影响，结果表明，内皮素－１作用于ＶＳＭＣ１２小时，＾Ｈ－ＴｒＲ参入开始增加，２４小时达到峰值，在内皮素－１作用下，原癌基因ｃ－ｆｏｓ与ｃ－ｊｕｎ的表达活性的３０分钟达到高峰３小时后恢复到原来水平，将可合成ｃ－     

PDGF在缺氧肺动脉平滑肌细胞增殖中的作用及其机理初探

目的：研究缺氧性肺动脉高压肺血管结构改建中肺血管平滑肌细胞增殖的机理。方法：采用＾３Ｈ－ＴｄＲ掺入和核酸分杂交技术观察了缺氧对肺动脉平滑肌细胞（ＰＡＳＭ）增殖及血小板源性生长因子（ＰＤＧＦ）－Ａ链，－Ｂ链，α，β亚基受体基因表达的影响，结果：低氧６ｈ使ＰＡＳＭ＾３Ｈ－ＴｄＲ参入减少（Ｐ〈０．０５），无氧６ｈＰＡＳＭ的＾３Ｈ－ＴｄＲ参入均较常氧对照组明显增多Ｐ〈０．００１，而缺氧１２ｈ则促进参入，至     

丝裂素活化蛋白激酶介导同型半胱氨酸诱导的血管平滑 …

目的；研究同型半胱氨酸（ＨＣＹ）促进血管平滑肌细胞（ＶＳＭＣ）的增殖及其机制。方法：采用同位素技术测量＾３Ｈ－ＴｄＲ参入和丝裂素活化蛋白激酶（ＭＡＰＫ）活性。结果：ＨＣＹ促进ＶＳＭＣ增殖，同时ＨＣＹ增加ＭＡＰＫ活性，二者均具有剂量效应关系，而且二者之间呈显著正相关。结论：ＨＣＹ促进ＶＳＭＣ增殖，可能是通过增加ＭＡＰＫ活性的途径实现的。     

自发性高血压大鼠组织NOS活性及其亚型mRNA的表达

为探讨自发性高血压大鼠（ＳＨＲ）不同组织一氧化氮合酶（ＮＯＳ）改变及在高血压形成中的作用，采用＾３Ｈ－精氨酸转换为＾３Ｈ－胍氨酸放射强度法和反转录－聚麦链式反应方法，比较ＳＨＲ和对照组ＷＫＹ大鼠不同组织ＮＯＳ活性及ｉＮＯＳ、ｃＮＯＳ两种亚型ｍＲＮＡ表达的改变，结果：ＳＨＲ肾皮质、心肌ＮＯＳ活性明显低于ＷＫＹ，而大脑皮质ＮＯＳ活性两组间无显著差异；ＳＨＲ肾皮质、心肌中ｃＮＯＳ表达和大脑皮质、培养的血     

溶血磷脂酸刺激兔血管平滑肌细胞增殖的信号转导途径

目的：探讨溶血磷脂酸（ＬＰＡ）刺激兔血管平滑肌细胞（ＶＳＭＣ）增殖的信号转导途径，方法：在培养的家兔血管平滑肌细胞上，测定＾３Ｈ－胸腺嘧啶核苷（＾３Ｈ－ＴｄＲ）参入和丝裂素活化蛋白激酶（ＭＡＰＫ）活性。结果：ＬＰＡ呈浓度依赖地刺激＾３Ｈ－ＴｄＲ参入，并平行地激活ＭＡＰＫ二间呈显正相关，乙二醇－双（氨基乙酯）－四乙酸（ＥＧＴＡ）尼卡地平，ｒｙａｎｏｄｉｎｅｔｈａｐｓｉｇａｒｇｉｎｈｅｒｂｉｍｙｃ     

自发性高血压大鼠不同脑区5－HT_（1A）受体的结合特征

用放射性配基［~３Ｈ］８－ＯＨ－ＤＰＡＴ结合实验显示，自发性高血压大鼠（ＳＨＲ）脑区的海马、延髓、下丘脑５－ＨＴ_（１Ａ）受体的结合位点明显高于正常ＷｉｓｔａｒＫｙｏｔｏ（ＷＫＹ）大鼠，其中海马增加最多。在此基础上用抗高血压药普萘洛尔给ＳＨＲ灌胃，结果其脑区不同部位受体结合参数、血压及心率都有不同程度的变化，更接近于ＷＫＹ大鼠。这说明ＳＨＲ与ＷＫＹ大鼠之间不同脑区５－ＨＴ_（１Ａ）受体特异性差别可能与高血压的发病有关。     

不同年龄自发性高血压大鼠血管平滑肌细胞Ca^2＋转运功…

应用不同年龄自发性高血压大鼠（ＳＨＲ）血管平滑肌原代与传代细胞（ＶＳＭＣ），观察Ｃａ＾２＋转运功能障碍及某些相关因素的变化，结果表明：（１）在血压未升高的ＶＳＭＣＣａ＾２＋内流已较同龄对照组ＷＫＹ大鼠明显增加，而Ｃａ＾２＋外流量较ＷＫＹ大鼠显著降低。表明ＳＨＲＶＳＭＣ膜Ｃａ＾２＋转运功能障碍在血压升高前就已发生，并随年龄及血压增高有加重趋势；（２）ＶＳＭＣｃＡＭＰ及钙调素含量变化与细胞膜Ｃａ＾２＋     

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.