Hydroxyapatite nanocrystals functionalized with alendronate as bioactive components for bone implant coatings to decrease osteoclastic activity

被引：64

作者：

Bosco, Ruggero ^{[1
]}

Iafisco, Michele ^{[2
]}

Tampieri, Anna ^{[2
]}

Jansen, John A. ^{[1
]}

Leeuwenburgh, Sander C. G. ^{[1
]}

van den Beucken, Jeroen J. J. P. ^{[1
]}

机构：

[1] Radboud Univ Nijmegen, Med Ctr, Dept Biomat 309, NL-6525 EX Nijmegen, Netherlands

[2] CNR, Inst Sci & Technol Ceram ISTEC, I-48018 Faenza, Italy

来源：

APPLIED SURFACE SCIENCE | 2015年 / 328卷

关键词：

Coating; Bisphosphonate; Osteoclast; Osteoporosis; Hydroxyapatite; Electrospray; ELECTROSTATIC SPRAY DEPOSITION; OSTEOBLAST-LIKE CELLS; CALCIUM-PHOSPHATE; TITANIUM IMPLANTS; THIN-FILMS; BISPHOSPHONATE; OSTEOPOROSIS; APATITE; MARROW; PROLIFERATION;

D O I：

10.1016/j.apsusc.2014.12.072

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The integration of bone implants within native bone tissue depends on periprosthetic bone quality, which is severely decreased in osteoporotic patients. In this work, we have synthesized bone-like hydroxyapatite nanocrystals (nHA) using an acid-base neutralization reaction and analysed their physicochemical properties. Subsequently, we have functionalized the nHA with alendronate (nHA(ALE)), a well-known bisphosphonate drug used for the treatment of osteoporosis. An in vitro osteoclastogenesis test was carried out to evaluate the effect of nHA(ALE) on the formation of osteoclast-like cells from monocytic precursor cells (i.e. RAW264.7 cell line) showing that nHA(ALE) significantly promoted apoptosis of osteoclast-like cells. Subsequently, nHA and nHA(ALE) were deposited on titanium disks using electrospray deposition (ESD), for which characterisation of the deposited coatings confirmed the presence of alendronate in nHA(ALE) coatings with nanoscale thickness of about 700 nm. These results indicate that alendronate linked to hydroxyapatite nanocrystals has therapeutic potential and nHA(ALE) can be considered as an appealing coating constituent material for orthopaedic and oral implants for application in osteoporotic patients. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：516 / 524

页数：9

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