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Insulin released from titanium discs with insulin coatings—Kinetics and biological activity

机译:胰岛素用胰岛素涂料 - 动力学和生物活性从钛椎间盘释放

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Abstract Local administration of insulin from a titanium surface has been demonstrated to increase bone formation in non‐diabetic rats. The authors hypothesized that insulin was released from the titanium surface and with preserved biological activity after the release. Thus, in the present in vitro study, human recombinant insulin was immobilized onto titanium discs, and the insulin release kinetics was evaluated using Electro‐chemiluminescence immunoassay. Neutral Red uptake assay and mineralization assay were used to evaluate the biological effects of the released insulin on human osteoblast‐like MG‐63 cells. The results confirmed that insulin was released from titanium surfaces during a six‐week period. Etching the disc prior to insulin coating, thickening of the insulin coating and incubation of the discs in serum‐enriched cell culture medium increased the release. However, longer storage time decreased the release of insulin. Furthermore, the released insulin had retained its biological activity, as demonstrated by the significant increase in cell number and a stimulated mineralization process, upon exposure to released insulin. ? 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1847–1854, 2017.
机译:摘要已经证明了从钛表面局部胰岛素施用,以增加非糖尿病大鼠的骨形成。作者假设释放释放后的钛表面和保存的生物活性释放胰岛素。因此,在本发明的体外研究中,将人重组胰岛素固定在钛盘上,并且使用电化学发光免疫测定评估胰岛素释放动力学。中性红色摄取测定和矿化测定用于评估释放的胰岛素对人骨性细胞样MG-63细胞的生物学效应。结果证实,在六周的时间内从钛表面释放胰岛素。在胰岛素涂层之前蚀刻光盘,胰岛素涂层的增厚和血清细胞培养基中的盘中的孵育增加了释放。然而,较长的储存时间降低了胰岛素的释放。此外,释放的胰岛素已经保留其生物活性,如在暴露于释放的胰岛素时,通过细胞数和刺激的矿化过程的显着增加所证明的。还2016 Wiley期刊,Inc。J生物保证师B:Appl Biomater,105B:1847-1854,2017。

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