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1.
(1)目的 探讨开搏通过心肌缺血再灌注过程中肾素-血管紧张素系统的影响,(2)方法采用离体大鼠心脏Langendorff灌注模型,观察了缺血,缺血再灌注及开搏通再灌注组心肌组织血管紧张素转换酶,血管紧张素Ⅱ及乳酸脱氢酶尖性的变化,(3)结果与对照组相比,缺血组及再灌注组血管紧张素转换酶的活性,血管紧张素Ⅱ的含量均升高,开搏通过血管紧张素转换酶的活性及血管紧张素Ⅱ的含量均降低,乳酸脱氢酶的活性再灌注  相似文献   

2.
①目的探讨开搏通对心肌缺血再灌注过程中肾素-血管紧张素系统的影响。②方法采用离体大鼠心脏Langendorf灌注模型,观察了缺血、缺血再灌注及开搏通再灌注组心肌组织血管紧张素转换酶、血管紧张素Ⅱ及乳酸脱氢酶活性的变化。③结果与对照组相比,缺血组及再灌注组血管紧张素转换酶的活性、血管紧张素Ⅱ的含量均升高;开搏通组血管紧张素转换酶的活性及血管紧张素Ⅱ的含量均降低。乳酸脱氢酶的活性再灌注组明显升高,开搏通组则降低。④结论心肌肾素-血管紧张素参与再灌注损伤,开搏通具有心肌保护作用  相似文献   

3.
贾勤惠  贾国良 《医学争鸣》1996,17(5):347-349
目的:研究心肌局部肾素、血管紧张素Ⅱ(ANG-Ⅱ)及去甲肾上腺素(NE)在心肌晕厥发病中的作用以及血管紧张素转换酶抑制剂(ACEI)巯甲丙脯酸对心肌缺血-再灌注损伤是否具有保护作用。方法:采用冠状动脉结扎法建立兔心肌晕厥模型,用放射免疫分析法测定心肌晕厥发生时心肌组织肾素,ANG-Ⅱ及NE的变化,缺血前用巯甲丙脯酸静脉给药。结果:心肌缺血后局部肾素活性有升高趋势,再灌注后心肌局部肾素活性有升高趋势  相似文献   

4.
目的研究UⅡ在针刺抗心肌缺血再灌注损伤中的作用。方法-a')lJt,缺血再灌注模型SD大鼠120只,随机分为6组,正常对照组、模型组、针刺预处理组、针刺+尾加压素低浓度组、针刺+尾加压素高浓度组和血管紧张素Ⅱ特异性受体拮抗剂组,每组20只。针刺预处理组连续3天电针预处理,第三天复制心肌缺血再灌注模型。各组给药后即刻造模。造模成功后常规饲养24小时,处死取材,用ELISA法测定心肌组织中的uⅡ、GPR14。结果心肌缺血再灌注损伤时心肌组织中UⅡ含量显著降低(P〈0.01),同时GPR14含量升高,针刺预处理、针刺结合不同浓度UⅡ以及使用血管紧张素Ⅱ特异性受体拮抗剂均可以使缺血区心肌组织中的UⅡ含量显著升高,同时GPR14含量降低,以针刺结合低浓度UⅡ组效果最优(P〈0.01)。结论UⅡ可能是针刺抗急性心肌缺血再灌注损伤的重要途径之一。  相似文献   

5.
目的探讨急性心肌梗死(AMI)患者早期纤溶活性和血管紧张素Ⅱ水平的变化及福辛普利的干预作用。方法将39例发病24h内的AMI患者随机分为福辛普利组(21例)和常规治疗组(18例),福辛普利组在常规治疗基础上口服福辛普利(10mg/d),检测治疗前和治疗后2周纤溶酶原激活剂抑制物-1(PAI-1)古量与活性、组织纤溶酶原激活剂(t-PA)活性及血管紧张素Ⅱ(AngⅡ)浓度,并取20名正常人作为正常对照组。结果AMI患者PAI-1含量和活性、AngⅡ水平明显高于正常对照组(P〈0.01);t-PA活性明显低下正常对照组(P〈0。01)。AMI患者血浆AngⅡ浓度与PAI-1含量和活性成显著正相关(r分别为0.78和0.61,均P〈0.01),与t-PA活性无关(r=0.24.P〉0.05)。治疗后2周福辛普利组较常规治疗组PAI-1含量和活性、AngⅡ浓度显著降低(P〈0.01),t-PA活性明显升高(P〈0.01)。结论AMI患者早期纤溶活性降低并与肾素.血管紧张素系统(RAS)激活有关,福辛普利通过降低AngⅡ水平可以提高AMI患者内源性纤溶活性,可能是血管紧张素转换酶(ACE)抑制剂减少AMI后再梗死事件和早期病死率的重要机制之一。  相似文献   

6.
目的:研究心肌局部肾素、血管紧张素Ⅱ(ANG-Ⅱ)及去甲肾上腺素(NE)在心肌晕厥发病中的作用,以及血管紧张素转换酶抑制剂(ACEI)巯甲丙脯酸对心肌缺血-再灌注损伤是否具有保护作用.方法:采用冠状动脉结扎法建立兔心肌晕厥模型,用放射免疫分析法测定心肌晕厥发生时心肌组织肾素,ANG-Ⅱ及NE的变化,缺血前用巯甲丙脯酸静脉给药.结果:心肌缺血后局部肾素活性有升高趋势,再灌注后心肌局部肾素活性有升高趋势,再灌注后心肌局部肾素活性[(609.3±210)pg·mg-1蛋白·h-1]显著高于正常对照组[(196.4±24.8)pg·mg-1蛋白·h-1](P<0.01).心肌局部ANG-Ⅱ含量[(3005.1±835.3)pg/mg蛋白]明显高于正常对照组[(1535.4±258.3)pg/mg蛋白](P<0.01).心肌NE含量[(3.0±1.0)μg/g湿重vs(1.18±0.28)μg/g湿重]明显升高(P<0.01).缺血前静脉推注巯甲丙脯酸可以降低心肌晕厥时心肌局部ANG-Ⅱ及NE的产生.结论:心肌局部肾素,ANG-Ⅱ及NE在心肌晕厥的发病中具有重要意义,动物实验结果提示缺血前静脉应用巯甲丙脯酸防治可能是  相似文献   

7.
刘鹏  洪秀芳等 《新疆医学》2001,31(4):261-262
目的:探讨肾素-血管紧张素系统(RAS)在冠心病发病中的作用。方法:选用放射免疫方法测定140例正常人和158例不同临床类型的冠心病患者血浆肾素(PRA),血管紧张素Ⅱ(AⅡ)水平,结果:冠心病AMI组PRA及AⅡ较对照组明显增高(P<0.01),OMI,SA,UA组PRA增高不显著,而AⅡ明显增高(P<0.05)。结论:冠心病患者血浆RAS的活性在一定程度上反映了冠心病患者病情的变化。  相似文献   

8.
目的:探讨充血性心力衰竭患者血清甲状腺激素含量变化及其与左室射血分数、血浆及肾素活性、血管紧张素Ⅱ的关系。方法:采用放免法测定34例充血性心力衰竭患者(充血性心力衰竭组)和15例正常人(正常对照组)的血清甲状腺激素、血浆肾素活性和血管紧张素Ⅱ水平,对充血性心力衰竭组中的18例在心功能改善后复查了上述指标。同时采用彩色多普勒超声心动图仪测定34例充血性心力衰竭组患者的左室射血分数。对甲状腺激素、血浆肾素活性、血管紧张素Ⅱ与左室射血分数的关系作直线相关分析。结果:CHF组与正常对照组比较血清总三碘甲状腺原氨酸、游离T3含量均显著降低(P<0.01);rT3、血浆肾素活性、血管紧张素Ⅱ水平显著增高(P<0.01)。充血性心力衰竭组血清TT3、FT3含量与LVEF均呈显著正相关;rT3、RPA、AngⅡ水平与LVEF均呈显著负相关;PRA、AngⅡ水平与血清TT3含量均呈显著负相关。结论:血清TT3、FT3降低及rT3、PRA、AngⅡ升高是CHF的病理生理特征之一,检测上述指标对判断心功能状态具有重要临床价值。  相似文献   

9.
观察“药对”降香、红景天对心肌梗塞大鼠心肌组织血管紧张素ⅡAngⅡ含量、血管紧张素原(AGT)mRNA表达的影响,探讨其改善心肌重塑作用机制。方法:结扎大鼠冠状动脉左前降支制备心肌梗塞模型,分别给予降香、红景天煎剂和卡托普利溶液灌胃,连续6周后取梗塞区心肌,分别用放射免疫法和荧光定量PCR检测心肌组织血管紧张素Ⅱ含量和血管紧张素原mRNA表达量。结果:模型组血管紧张素Ⅱ含量和血管紧张素原mRNA表达量高于假手术组和正常组(P〈0.05);药对组、药对联合卡托普利组血管紧张素Ⅱ含量和血管紧张素原mRNA表达量较模型组降低(P〈0.05),与卡托普利组接近(P〉0.05);联合用药组血管紧张素原mRNA含量较药对组降低(P〈0.05)。结论:“药对”降香、红景天能够改善心肌梗塞后大鼠心肌重塑,其作用机制可能与降低梗死区心肌组织血管紧张素Ⅱ含量和血管紧张素原mRNA表达有关。  相似文献   

10.
目的观察替米沙坦对肾素、血管紧张素Ⅱ、醛固酮的影响和降压疗效。方法选择100例轻中度高血压患者,给予替米沙坦80mg,1次/d,共治疗8周,观察治疗前后血压、心率、肾素、血管紧张素Ⅱ、醛固酮等指标的变化。结果治疗后收缩压和舒张压较治疗前均明显下降(P〈0.01),治疗后血管紧张素Ⅱ含量明显增高(P〈0.01),而醛固酮含量则较治疗前降低(P〈0.01),治疗后肾素活性有明显增高(P〈0.05)。结论替米沙坦降压安全有效,且耐受性好,不良反应轻微,是一种比较理想的新型降压药物。  相似文献   

11.
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…  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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  相似文献   

17.
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.  相似文献   

18.
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.  相似文献   

19.
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.  相似文献   

20.
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.  相似文献   

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