【摘 要】
：
Background Low-power helium-neon (He-Ne) lasers have been increasingly widely applied in the treatment of cardiovascular diseases, and its vasodilation effect h
【机 构】
：
Department of Anatomy and Histoembryology,Department of Cardiology
论文部分内容阅读
Background Low-power helium-neon (He-Ne) lasers have been increasingly widely applied in the treatment of cardiovascular diseases, and its vasodilation effect has been proven. The aim of this study was to determine the effects of low-power He-Ne laser irradiation directed at the precardial region of Wistar rats on capillary permeability in the myocardium and the expression of myocardial vascular endothelial growth factor (VEGF). Methods Sixteen rats were divided randomly into control and irradiated groups (n=8, each). A He-Ne laser (632.8 nm) was applied to the irradiated group with a dose of 60.5 J/cm2. Ferritin was perfused into the left femoral vein and capillary permeability was examined under an electron microscope. VEGF expression in the myocardium was investigated by immunohistochemical methods, RT-PCR, and image analysis. Results The ultrastructures of the myocardial capillaries were examined. Compared to the control group, more high-density granules (ferritin), which were present within the capillary endothelium and the mitochondrions of myocardial cells in the internal layer of the myocardium, were observed in the irradiated group. VEGF staining of the myocardium was stronger in the irradiated group than that in the control group. The optic density of the irradiated group (0.246±0.015) was significantly higher than that of the control group (0.218±0.012, P
其他文献
以"苏州青"为试验材料,采用室内盆栽砂培方法,营养液按霍格兰配方进行配置,研究氮、磷、钾失调对其生长的影响.结果表明:不同养分处理对"苏州青"青菜的出苗、株高、根长、叶
以21日龄的白羽王鸽为材料,测量体重、体尺和屠宰性状,应用典型相关分析原理对3组性状间的相关关系进行分析研究,并建立了回归方程.结果表明:屠体重与体斜长、龙骨长、胸深、
Background Hypoxia-inducible factor 1 (HIF-1), a transcription factor, is overexpressed in common human cancers and their metastases. This study aimed at determ
Background SMAD proteins have recently been identified as the first family of putative transforming growth factor-β_1(TGF-β_1) signal transducers. This study
Background Time-intensity curves derived from microbubble destruction/refilling sequences and recorded using myocardial contrast echocardiography (MCE) can prov
Background Lipoprotein glomerulopathy (LPG), once recognized as a rare glomerular disease, has been reported around the world in recent years. In this study, w
Background Much research has been focused on ischemia/reperfusion injury (IRI) to the transplanted organs. As a free radical, nitric oxide (NO) plays an importa
Background Bells palsy involves acute facial paralysis due to inflammation of the facial nerve. Acupuncture and moxibustion (acu-moxi) is beneficial in treating
对优选5号、优选8号、优选9号等3个杂交育成的高茶多酚茶树的生化成分与品质性状的研究结果表明,3个茶树品种一芽二叶的生化成分含量丰富,芽叶中的茶多酚、儿茶素、氨基酸、
Background The results of clinical trials of rapamycin-eluting stents reduce restenosis have been quite promising. The main purpose of this study was to charac