Changes of Expressions of VEGF, bFGF, and Angiogenesis, and Effect of Benazepril, bFGF on Angiogenes

来源 :生物医学与环境科学(英文版) | 被引量 : 0次 | 上传用户:l87521
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
To explore the changes of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF) and angiogenesis, and the effects of bFGF, angiotensin converting enzyme inhibiter(ACEI) benazepril on the angiogenesis in acute myocardial infarction (AMI) model of rabbits, and to provide a probable evidence for the treatment of AMI. Methods AMI model was established by ligating anterior descending branch of coronary artery of Japan-Sino hybridization white rabbits. The postoperative rabbits were randomly divided into 6 groups and each group was treated with different drugs. Groups 1 and 2 were treated with normal saline (NS) for 28 and 14 days (d), group 3 and 4 with bFGF for 28 and 14 d, groups 5 with benazepril for 14 d, and group 6 with benazepril and bFGF for 14 d respectively. The rabbits were killed on the 14th or 28th d and their hearts were excised, sectioned and stained with HE, Masson trichrome to observe VEGF, bFGF and CD34 under a microscope, which were quantified with a computer-assisted morphometry. Results Compared with group 1, the granulation tissue of infarction zone (IZ) in group 2 freshened up, and the capillary density (CD) in IZ was increased (P=0.002). The CD in the IZ as well as VEGF and bFGF in groups 3 and 4 were increased respectively (P=0.011-0.037). In group 5 the changes of VEGF and bFGF were not found in the IZ and the border zone (BZ) while CD was significantly increased (35.4% and 25.6%, P=0.036 and 0.037). Compared with group 2, the CD in the IZ and BZ of group 6 was significantly increased (63.4% and 44.3% P=0.007 and 0.007), meanwhile VEGF and bFGF were increased. Compared with group 5, only VEGF was increased. Conclusion Intravenous bFGF may increase VEGF and bFGF significantly, thus promoting the angiogenesis in the IZ and BZ in cardiac infarction as VEGF and bFGF are the potent angiogenic growth factors. Benazepril may promote angiogenesis in the IZ and BZ in cardiac infarction, but its mechanism is irrelative to the expression of VEGF and bFGF. The combination of benazepril and bFGF may promote, to some extent, the expression of VEGF and bFGF, but their effect on angiogenesis has not been found.
其他文献
电力系统的接地直接关系到用户的人身和财产安全,以及电气设备和电子设备的正常运行。如何针对实际情况选择合适的接地系统,确保配电系统及电气设备的安全使用。本文对低压配电
To investigate the relationship between polymorphisms of insulin-receptor (INSR) gene and insulin resistance in a population-based study in China. Methods Polym
本文由一范例工程简要介绍了带转换层多塔高层建筑结构设计时常见的几个问题,从结构方案到整体计算,详细介绍了工程设计的整个过程,并对计算结果进行分析比较。对设计中应注意的
有关长屈肌和趾长屈肌肌腱的变异,国内报告较少.笔者在制作教学标本时共发现3例计5侧(右侧3例,左侧2例),2肌肌腱在足底的终止情况与教科书中的记载不同,现报告如下.
Research on neuro signals is challenging and significative in modern natural science. By clinical experiment, signals from three main nerves (median nerve, radi
To investigate the relationship of bcl-2, p53, proliferating cell nuclear antigen (PCNA) to cell proliferation, apoptosis and pathological parameters, the patte
Both postprandial hypertriglyceridemia and diabetic gastroparesis are common dysfunctions affecting diabetes mellitus; however,whether diabetic gastroparesis ha
Objective: To observe the effect and clinical significance of circulating endothelial cells (CEC) in the pathogenesis of coronary heart disease with unstable an
Objective: To explore the role of cytokines on the pathogenesis of atherosclerosis, and the lectins (Ps), von Willebrand (vWF), and D-dimer (D-D) in atheroscler
Objective: To investigate the effects of Xuezhikang capsule (XZK, 血脂康胶囊) on blood lipids level, platelet activation and coagulation-fibrinolysis activity i