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The effect of varying percentage hydroxyapatite in poly(ethylmethacrylate) bone cement on human osteoblast-like cells

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Abstract

Poly(ethylmethacrylate) (PEMA) bone cement has been developed, and the cements mechanical properties are improved by the incorporation of particulate fillers, such as hydroxyapatite (HA). In this in vitro study, human osteoblast-like (HOB) cells were used to examine the effect on cellular behavior of the addition of HA to PEMA using a plain PEMA control. Thymidine uptake (3H-TdR) and total DNA were used to assess cell growth and proliferation. Confocal laser scanning microscopy (CLSM) was used to study focal contacts and actin cytoskeletal organisation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to assess cell morphology and cellular ultrastucture. The early time points showed preferential anchorage to the HA exposed on the cement surface, but no difference in adhesion or proliferation. These results have been attributed to increases in residual monomer with HA incorporation, as shown by proton nuclear magnetic resonance (H1-NMR) spectra.

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Authors and Affiliations

  1. St Bartholomew's and the Royal London School of Medicine and Dentistry, Queen Mary and Westfield College, Mile End Road, London, E1 4NS, UK

    T. N. Opara

  2. Institute of Orthopaedics, IRC in Biomedical Materials, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK

    L. Di Silvio

  3. Centre for Cell Engineering, Institute of Biomedical and Life Sciences, Joseph Black Building, University of Glasgow, Glasgow, G12 8QQ, UK

    M. J. Dalby & W. Bonfield

  4. IRC in Biomedical Materials, Queen Mary and Westfield College, Mile End Road, London, E1 4NS, UK

    E. J. Harper & W. Bonfield

Authors
  1. T. N. Opara
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  2. M. J. Dalby
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  3. E. J. Harper
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  4. L. Di Silvio
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  5. W. Bonfield
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Correspondence to M. J. Dalby.

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Opara, T.N., Dalby, M.J., Harper, E.J. et al. The effect of varying percentage hydroxyapatite in poly(ethylmethacrylate) bone cement on human osteoblast-like cells. Journal of Materials Science: Materials in Medicine 14, 277–282 (2003). https://doi.org/10.1023/A:1022845026785

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