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Silva SS, Oliveira JM, Benesch J, Caridade SG, Mano JF, Reis RR. Hybrid biodegradable membranes of silane-treated chitosan/soy protein for biomedical applications. J BIOACT COMPAT POL 2013. [DOI: 10.1177/0883911513490361] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In recent years, progress in the field of hybrid materials has been accelerated through use of the sol–gel process for creating materials and devices, which benefit from the incorporation of both inorganic and organic components. In this work, organic–inorganic hybrid membranes were prepared from tetraethoxysilane and a blend system composed of chitosan and soy protein. By introducing a small amount of siloxane bond into the chitosan/soy protein system, the chitosan/soy protein hybrid membranes were improved in terms of structure, topography and mechanical properties. It appears that the chitosan/soy protein hybrid membranes were formed by discrete inorganic moieties entrapped in the chitosan/soy protein blend, which improved the stability and mechanical performance assessed by the dynamic mechanical analysis as compared to chitosan/soy protein membrane. Also, in vitro cell culture studies evidenced that the chitosan/soy protein hybrid membranes are non-cytotoxic over a mouse fibroblast-like cell line. The hybrid membranes of silane-treated chitosan/soy protein developed in this work have potential in biomedical applications, including tissue engineering.
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Affiliation(s)
- Simone S Silva
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
- ICVS/3B’s- PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
- ICVS/3B’s- PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Johan Benesch
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
- ICVS/3B’s- PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Sofia G Caridade
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
- ICVS/3B’s- PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F Mano
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
- ICVS/3B’s- PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui R Reis
- 3B’s Research Group- Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Caldas das Taipas, 4806-909 Guimarães, Portugal
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Mkhonto D, de Leeuw NH. The effect of surface silanol groups on the deposition of apatite onto silica surfaces: a computer simulation study. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:203-16. [PMID: 17597358 DOI: 10.1007/s10856-007-3067-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2006] [Accepted: 05/31/2006] [Indexed: 05/16/2023]
Abstract
Computer modelling techniques were employed to investigate the effect of surface silanol groups on the strength of adhesion of apatite thin films to silica surfaces. To this end, we have studied a series of silica surfaces with different silanol densities and calculated their interaction with apatite thin films. Our findings indicate that apatite does not attach strongly to surface hydroxy groups, but that apatite should deposit at dehydrated silica surfaces, especially when the surface silicon and oxygen species rearrange to form O-Si-O links. Any dangling silicon and oxygen bonds at the silica surfaces are saturated by coordination to oxygen and calcium atoms in the apatite layer, but the extra reactivity afforded by these under-coordinated surface species does not necessarily lead to more favourable substrate/film interactions. The lowest energy silica/apatite interfaces are those where an undistorted apatite layer can be deposited on a regular, stable substrate surface. Our simulations support the suggestion, that in vivo surface hydroxy groups are first condensed to form O-Si-O bridges before deposition and growth of apatite.
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Affiliation(s)
- D Mkhonto
- School of Crystallography, Birkbeck College, Malet Street, London WC1E 7HX, UK
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Roach P, Eglin D, Rohde K, Perry CC. Modern biomaterials: a review - bulk properties and implications of surface modifications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:1263-77. [PMID: 17443395 DOI: 10.1007/s10856-006-0064-3] [Citation(s) in RCA: 216] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Accepted: 05/08/2006] [Indexed: 05/14/2023]
Abstract
This review concerns the importance of length and time on physicochemical interactions between living tissue and biomaterials that occur on implantation. The review provides information on material host interactions, materials for medical applications and cell surface interactions, and then details the extent of knowledge concerning the role(s) that surface chemistry and topography play during the first stage of implant integration, namely protein adsorption. The key points are illustrated by data from model in vitro studies. Host implant interactions begin nanoseconds after first contact and from then on are in a state of flux due to protein adsorption, cell adhesion and physical and chemical alteration of the implanted material. The many questions concerning the conformational form and control of bound proteins and how this may impact on cell adhesion in the first instance and later on cell signalling and implant integration can be answered by systematic investigations using model materials. Only then we will be in a more informed position to design new materials for use in the body.
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Affiliation(s)
- Paul Roach
- Division of Chemistry, Interdisciplinary Biomedical Research Centre, School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton, Nottingham, UK
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