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首页> 外文期刊>Journal of vascular research >Elastin Organization in Pig and Cardiovascular Disease Patients' Pericardial Resistance Arteries
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Elastin Organization in Pig and Cardiovascular Disease Patients' Pericardial Resistance Arteries

机译:猪和心血管疾病患者心包抗性动脉中的弹性蛋白组织

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Peripheral vascular resistance is increased in essential hypertension. This involves structural changes of resistance arteries and stiffening of the arterial wall, including remodeling of the extracellular matrix. We hypothesized that biopsies of the human parietal pericardium, obtained during coronary artery bypass grafting or cardiac valve replacement surgeries, can serve as a source of resistance arteries for structural research in cardiovascular disease patients. We applied two-photon excitation fluorescence microscopy to study the parietal pericardium and isolated pericardial resistance arteries with a focus on the collagen and elastin components of the extracellular matrix. Initial findings in pig tissue were confirmed in patient biopsies. The microarchitecture of the internal elastic lamina in both the pig and patient pericardial resistance arteries (studied at a transmural pressure of 100 mm Hg) is fiber like, and no prominent external elastic lamina could be observed. This microarchitecture is very different from that in rat mesenteric arteries frequently used for resistance artery research. In conclusion, we add three-dimensional information on the structure of the extracellular matrix in resistance arteries from cardiovascular disease patients and propose further use of patient pericardial resistance arteries for studies of the human microvasculature. (C) 2015 S. Karger AG, Basel
机译:原发性高血压患者外周血管阻力增加。这涉及阻力动脉的结构变化和动脉壁的硬化,包括细胞外基质的重塑。我们假设在冠状动脉搭桥术或心脏瓣膜置换手术中获得的人顶叶心包活检可以作为心血管疾病患者结构研究的阻力动脉来源。我们应用双光子激发荧光显微镜来研究壁心包和孤立的心包阻力动脉,重点是细胞外基质的胶原蛋白和弹性蛋白成分。病人活检证实了猪组织的初步发现。猪和患者心包阻力动脉的内部弹性层的微结构(在100 mm Hg的透壁压力下研究)呈纤维状,并且未观察到明显的外部弹性层。这种微结构与经常用于阻力动脉研究的大鼠肠系膜动脉的微结构完全不同。总之,我们在心血管疾病患者的阻力动脉中添加了关于细胞外基质结构的三维信息,并提出了将患者心包阻力动脉进一步用于人体微脉管系统研究的建议。 (C)2015 S.Karger AG,巴塞尔

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