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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Human Endothelial Cell Attachment and Proliferation on a Novel Vascular Graft Prototype
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Human Endothelial Cell Attachment and Proliferation on a Novel Vascular Graft Prototype

机译:人血管内皮细胞附着和增殖的新型血管移植原型。

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A new vascular prosthesis prototype was assessed for its ability to support an endothelial cell layer in vitro. A coiled tubular structure, constructed from polymer-coated metallic wires, with an internal diameter of 690 mum, was used. Addition of heparin to the surface coating of the coil strongly enhanced the blood compatibility of the device. A series of coils with five different coatings, increasing in hydrophilicity, was studied. Heparin was added to one series, another series did not contain this anticoagulant drug. Upon contact with blood, a vascular prosthesis will instantaneously adsorb plasma proteins on its surface, and these proteins will influence the behavior of cells binding to the device. When coils were treated with human plasma proteins, mimicking the in vivo situation, human microvascular endothelial cells grew well on all coils studied, irrespective of the hydrophilicity of the underlying coating or the addition of heparin. For control coils, only endothelial cell growth on the most hydrophobic surfaces, and a moderate enhancing effect for heparin, were observed. This novel vascular graft prototype seems well suited for the support of an endothelial cell layer, especially when plasma proteins are adsorbed to its surface, and shows promise for in vivo testing.
机译:评估了新的血管假体原型在体外支持内皮细胞层的能力。使用由聚合物涂覆的金属线构成的盘绕管状结构,其内径为690微米。在线圈的表面涂层中添加肝素可大大增强设备的血液相容性。研究了一系列具有五种不同涂层,提高了亲水性的线圈。肝素被添加到一个系列中,另一个系列不包含这种抗凝药物。与血液接触后,血管假体将立即在其表面吸附血浆蛋白,这些蛋白将影响细胞与该装置结合的行为。当用人类血浆蛋白处理线圈时,模仿体内情况,无论所研究的线圈是亲水性还是添加肝素,人体微血管内皮细胞在所有研究的线圈上均生长良好。对于对照线圈,仅观察到最疏水表面上的内皮细胞生长以及对肝素的中等增强作用。这种新颖的血管移植物原型似乎非常适合支持内皮细胞层,特别是当血浆蛋白吸附到其表面时,并显示出进行体内测试的希望。

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