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Evaluation of cell compatibility of surfaces patterned with hydroxyapatite nanopowders on Ti surfaces

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Abstract

Hydroxyapatite (HA) is a widely used biomaterial for coatings on prostheses, which is used to repair, replace and restore the function of traumatized or diseased bone. In the present study, template-assisted electrohydrodynamic atomization (TAEA) was used to pattern Ti surfaces (convex, concave and flat) with different HA nanoparticles, in order to evaluate the cellular responses. A comparison of biocompatibility between surfaces coated with locally prepared (SL) and commercially available HA nanopowders was carried out. The cytotoxicity and cellular responses to these substrates (i.e., cell adhesion, morphology and proliferation) were evaluated using human osteoblast-like cells (HOS) in vitro. The results demonstrate that Ti surfaces coated with HA (SL) and commercial HA supported HOS cell attachment and proliferation without eliciting any deleterious substances. Moreover, retention of cell viability and morphology of osteoblast-like cells were observed once cells were in contact with the surfaces and were comparable to that of the tissue culture control. Interestingly, cells attached to HA (SL) elicited a better response. Proliferation of cells on convex surfaces was relatively higher in comparison to that of the concave and flat surfaces, which could be due to increased surface area of the HA (SL).

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Acknowledgements

This study was supported by the National Research Council, Sri Lanka [NRC-15-027] and The Royal Society of UK, International exchanges Scheme 2013/R2, UK. We greatly acknowledge the support extended by Prof M Edirisinghe and Dr A Nithyanandan of the Biomaterial Processing Laboratory, University College London (UK) in producing TAEA surfaces.

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Authors and Affiliations

  1. Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, 20400, Sri Lanka

    T N Premachandra & R P V J Rajapakse

  2. Department of Chemistry, Faculty of Science, University of Peradeniya, Peradeniya, 20400, Sri Lanka

    W P S L Wijesinghe & R M G Rajapakse

  3. Department of Medical Laboratory Science, Faculty of Allied Health Sciences, University of Peradeniya, Peradeniya, 20400, Sri Lanka

    H M T U Herath

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  1. T N Premachandra
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  2. W P S L Wijesinghe
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  3. R P V J Rajapakse
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  4. R M G Rajapakse
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  5. H M T U Herath
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Correspondence to H M T U Herath.

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Premachandra, T.N., Wijesinghe, W.P.S.L., Rajapakse, R.P.V.J. et al. Evaluation of cell compatibility of surfaces patterned with hydroxyapatite nanopowders on Ti surfaces. Bull Mater Sci 44, 102 (2021). https://doi.org/10.1007/s12034-021-02373-x

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  • DOI: https://doi.org/10.1007/s12034-021-02373-x

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