Mater Sci Eng C Mater Biol Appl:电泳沉积的介孔硅酸镁与有序纳米孔作为表面改性钛上的抗生素涂层

2019-01-08 MedSci MedSci原创

手术后植体的感染很常见,但是全身使用抗生素会在杀灭细菌之前引起问题。植体的局部药物输送是解决上述问题的有效方式。在目前的工作中,有序介孔硅酸镁(OMMS)通过电泳沉积(EPD)涂覆在等离子体电解氧化(PEO)修饰的钛(Ti)基底上,并且作为抗生素的利福平加载在OMMS涂层上以作为抗菌剂涂层使用。采用模拟体液浸泡试验和动电位极化试验,分别评价试样7天的体外生物活性和试样的耐腐蚀性。PEO和EPD的双

手术后植体的感染很常见,但是全身使用抗生素会在杀灭细菌之前引起问题。植体的局部药物输送是解决上述问题的有效方式。在目前的工作中,有序介孔硅酸镁(OMMS)通过电泳沉积(EPD)涂覆在等离子体电解氧化(PEO)修饰的钛(Ti)基底上,并且作为抗生素的利福平加载在OMMS涂层上以作为抗菌剂涂层使用。

采用模拟体液浸泡试验和动电位极化试验,分别评价试样7天的体外生物活性和试样的耐腐蚀性。PEO和EPD的双面涂层在Ti基底上实现,每一层的厚度分别为4和25μm。关于OMMS作为EPD涂层的药物输送能力,负载能力为25%,释放趋势持续高达96h。随着利福平的加载,OMMS涂层的抗菌活性和细胞活力显著增加。

我们的研究结果表明,OMMS作为沉积在PEO改性的Ti基底上的多功能涂层改善了基材的耐腐蚀性,体外生物活性,碱性磷酸酶活性和矿化。此外,装有利福平的OMMS涂层不仅能够预防感染,还能增加成骨细胞的活力。因此,Ti上的利福平负载OMMS涂层或可用于整形外科应用。

原始出处:

Bigham A, Saudi A, et al., Electrophoretically deposited mesoporous magnesium silicate with ordered nanopores as an antibiotic-loaded coating on surface-modified titanium. Mater Sci Eng C Mater Biol Appl. 2019 Mar;96:765-775. doi: 10.1016/j.msec.2018.12.013. Epub 2018 Dec 6.

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    2019-06-27 axin009
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    2019-09-21 spoonycyy
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    2019-11-18 sunylz
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    2019-11-05 30397613
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    2019-01-08 深海的鱼

    学习学习学习

    0