Osteoblast behaviour on HA/PE composite surfaces with different HA volumes

被引:79
作者
Di Silvio, L
Dalby, MJ
Bonfield, W
机构
[1] IRC Biomed Mat, Inst Orthopaed, Stanmore HA7 4LP, Middx, England
[2] Queen Mary Univ London, IRC Biomed Mat, London E1 4NS, England
基金
英国工程与自然科学研究理事会;
关键词
hydroxyapatite; HAPEX; osteoblasts; adhesion;
D O I
10.1016/S0142-9612(01)00084-9
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
A hydroxyapatite (HA) reinforced polyethylene (PE) composite (designated HAPEX (TM)), with high mechanical specification and a bioactive HA phase, has been optimised as a bone analogue material, Manufacturing conditions and machining of the materials were carefully controlled to give a reproducible material surface roughness with minimal batch variation. The effect of surface composition was examined in vitro using primary human osteoblasts (HOB). HOBs were cultured in direct contact with the test materials containing 20% and 40% vol. HA. The results showed that 40% HA/PE enhanced cellular activity by increasing proliferation rate and differentiation compared to the 20% vol. HA composite. The cytoskeletal organisation of the cells was also examined and HOBs cultured on 40% HA/PE were flatter and had an enhanced rate of cytoskeletal organisation and an increase in focal contact points compared to the 20% HA/PE. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:101 / 107
页数:7
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