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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >In vitro evaluation of the inflammatory potential of the silk fibroin.
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In vitro evaluation of the inflammatory potential of the silk fibroin.

机译:丝素蛋白炎性潜力的体外评估。

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摘要

Silk fibroin membranes recently have been suggested as matrices for biomedical applications, such as guided tissue regeneration and burn wound dressings. The aim of this study was to evaluate the inflammatory potential of fibroin films and to compare the fibroin films with two model materials with completely different physico-chemical properties: poly(styrene) and poly(2-hydroxyethyl methacrylate). Fibroin bound lower levels of fibrinogen than did the two synthetic polymers while the same amounts of adsorbed human plasma complement fragment C3 and IgG were detected. Studies of the binding strength of C3 to fibroin, evaluated by a novel experimental procedure, indicated the occurrence of strong hydrophobic interactions at the interface. The activation of the mononuclear cells by fibroin, measured as interleukin 1beta production, was lower than the reference materials. Adhesion experiments showed the ability of the macrophages to adhere to fibroin by filopodia without a complete spreading of the cells. The results achieved in this study demonstrate that the interactions of fibroin with the humoral components of the inflammatory system were comparable with those of the two model surfaces while the degree of activation and adhesion of the immunocompetent cells appeared more limited. Copyright 1999 John Wiley & Sons, Inc.
机译:近年来,丝素蛋白膜已被建议用作生物医学应用的基质,例如引导组织再生和烧伤创面敷料。这项研究的目的是评估纤维蛋白膜的炎性潜力,并将纤维蛋白膜与两种具有完全不同的物理化学性质的模型材料进行比较:聚苯乙烯和聚甲基丙烯酸2-羟乙酯。与两种合成聚合物相比,血纤蛋白结合的血纤蛋白原含量更低,同时检测到相同量的吸附的人血浆补体片段C3和IgG。通过一种新颖的实验方法对C3与丝蛋白的结合强度的研究表明,在界面处发生了强疏水性相互作用。纤维蛋白对单核细胞的激活(以白介素1β的产生来衡量)低于参考材料。粘附实验表明,巨噬细胞通过丝状伪足粘附到丝蛋白上的能力而没有细胞的完全扩散。在这项研究中获得的结果表明,纤维蛋白与炎性系统的体液成分之间的相互作用与两个模型表面的相互作用相当,而免疫活性细胞的活化和粘附程度似乎更为有限。版权所有1999 John Wiley&Sons,Inc.

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