Surface biomaterials

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Fig. 8. Schematic representation of protein-mediated cell adhesion on biomaterial surfaces. Biomaterial surface properties (such as hydrophilicity/hydrophobicity, topography, energy, and charge) affect subsequent interactions of adsorbed proteins these interactions include but are not limited to adsorbed protein type, concentration, and conformation. Changes in protein-surface interactions may alter accessibility of adhesive domains (such as the peptide sequence arginine-glycine-aspartic acid) to cells (such as osteoblasts, fibroblasts, or endothelial cells) and thus modulate cellular adhesion. (Adapted and redrawn from Schakenraad, 1996.)...

Lechleitner T et al (2008) The surface properties of nanocrystalline diamond and nanoparticulate diamond powder and their suitability as cell growth support surfaces. Biomaterials 29(32) 4275 4284... 

Keuren J F, Wielders S J, Willems G M (2003). Thrombogenicity of polysaccharide-coated surfaces. Biomaterials. 24 1917-1924. 

A. Zhu, M. Zhang, J. Wu, J. Shen, Covalent immobilization of chi-tosan/heparin complex with a photosensitive hetero-bifunctional crosslinking reagent on PLA surface, Biomaterials 23 (23) (2002) 4657-4665. 

X.F. Hu, K.G. Neoh, J.Y Zhang, E.-T. Kang, W. Wang, Immobilization strategy for optimizing VEGF s concurrent bioactivity towards endothelial cells and osteoblasts on implant surfaces. Biomaterials 33 (2012) 8082-8093. 

Y. Xu, M. Takai, K. Ishihara, Protein adsorption and cell adhesion on cationic, neutral, and anionic 2-methacryloyloxyethyl phosphorylcholine copolymer surfaces. Biomaterials 30 (2009) 4930-4938. 

Arciola, C. R., Campoccia, D. Montanaro, L. (2002). Effects on antibiotic resistance of Staphylococcus epidermidis following adhesion to polymethylmethacrylate and to silicone surfaces. Biomaterials, 23, 1495-1502. 

Andersen, M. Q., Howard, K. A., Paludan, S. R., Besenbacher, F., Kjems, J. 2008. Delivery of siRNA from lyophilized polymeric surfaces. Biomaterials 29 506-512. 

Several methods are available to determine the physical parameters of polymer surfaces. Biomaterials penetrate liquids like blood or water present in soft tissue. It is known that the free surface energy at the biomaterial/water interface is the driving force for the reorientation processes of the polar groups of the uppermost molecular layers of the polymer surface towards the aqueous phase. The chemical composition of the surface of the biomaterial is different depending on its contact with an aqueous medium or with air. Hydrophilic domains of polymer systems like those found in block copolymers, for example, are mostly located at the aqueous interface, while the hydrophobic ones tend to remain at the air interface. The investigation of surface wettability by means of contact angle determination and the measurement of the streaming potential ( -potential) is of special interest in the characterization of the polymer surface. 

Reprinted with permission from Finke, B., Luethen, F., Schroeder, K., Mueller, P.D., Bergemann, C., Frant, M., Ohl, A., Nebe, B.J., 2007. The effect of positively charged plasma polymerization on initial osteoblastic focal adhesion on titanium surfaces. Biomaterials 28, 4521-4534. 

Yue C, et al. Simultaneous interaction of bacteria and tissue cells with photocatalytically activated, anodized titanium surfaces. Biomaterials 2014 35(9) 2580—7. 

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Benoit DS, Anseth KS. The effect on osteoblast function of colocalized RGD and PHSRN epitopes on PEG surfaces. Biomaterials 2005 26 5209-20. 

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Keselowsky BG, Garcia AJ. Quantitative methods for analysis of integrin binding and focal adhesion formation on hiomaterial surfaces. Biomaterials 2005 26 413-8. 

Williams RL Williams DF. Albumin adsorption on metal surfaces. Biomaterials 1988 9(3) 206-12. 

Korematsu A, Takemoto Y, Nakaya T, Inoue H. Synthesis, characterization and platelet adhesion of segmented polyurethanes grafted phospholipid analogous vinyl monomer on surface. Biomaterials 2002 23 263-71. 

Campoccia D, Montanaro L, Arciola CR. A review of the biomaterials technologies for infection-resistant surfaces. Biomaterials 2013 34 8533-54. http //dx.doi.0rg/lO.lOl6/ j.biomaterials.2013.07.089. 

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