title: Effect of nanoparticulate bioactive glass particles on bioactivity and cytocompatibility of poly(3-hydroxybutyrate) composites.
abstract: This work investigated the effect of adding nanoparticulate (29 nm) bioactive glass particles on the bioactivity, degradation and in vitro cytocompatibility of poly(3-hydroxybutyrate) (P(3HB)) composites/nano-sized bioactive glass (n-BG). Two different concentrations (10 and 20 wt %) of nanoscale bioactive glass particles of 45S5 Bioglass composition were used to prepare composite films. Several techniques (Raman spectroscopy, scanning electron microscopy, atomic force microscopy, energy dispersive X-ray) were used to monitor their surface and bioreactivity over a 45-day period of immersion in simulated body fluid (SBF). All results suggested the P(3HB)/n-BG composites to be highly bioactive, confirmed by the formation of hydroxyapatite on material surfaces upon immersion in SBF. The weight loss and water uptake were found to increase on increasing bioactive glass content. Cytocompatibility study (cell proliferation, cell attachment, alkaline phosphatase activity and osteocalcin production) using human MG-63 osteoblast-like cells in osteogenic and non-osteogenic medium showed that the composite substrates are suitable for cell attachment, proliferation and differentiation.
authors.affiliation: Department of Materials, Imperial College London, London SW7 2BP, UK.
authors.forename: Superb K
authors.initials: SK
authors.lastname: Misra
authors.forename: Tahera
authors.initials: T
authors.lastname: Ansari
authors.forename: Dirk
authors.initials: D
authors.lastname: Mohn
authors.forename: Sabeel P
authors.initials: SP
authors.lastname: Valappil
authors.forename: Tobias J
authors.initials: TJ
authors.lastname: Brunner
authors.forename: Wendelin J
authors.initials: WJ
authors.lastname: Stark
authors.forename: Ipsita
authors.initials: I
authors.lastname: Roy
authors.forename: Jonathan C
authors.initials: JC
authors.lastname: Knowles
authors.forename: Paul D
authors.initials: PD
authors.lastname: Sibbons
authors.forename: Eugenia Valsami
authors.initials: EV
authors.lastname: Jones
authors.forename: Aldo R
authors.initials: AR
authors.lastname: Boccaccini
authors.forename: Vehid
authors.initials: V
authors.lastname: Salih
mesh_terms: D001672:Biocompatible Materials; D001709:Biotechnology; D001826:Body Fluids / Q000737:chemistry; D002448:Cell Adhesion; D002460:Cell Line; D049109:Cell Proliferation; D002516:Ceramics / Q000737:chemistry*; D005898:Glass; D006801:Humans; D006885:Hydroxybutyrates / Q000737:chemistry*; D008422:Materials Testing; D053758:Nanoparticles; D010006:Osteoblasts / Q000166:cytology / Q000378:metabolism; D010316:Particle Size; D011091:Polyesters / Q000737:chemistry*; D013499:Surface Properties; D023822:Tissue Engineering; D000094122:Polyhydroxybutyrates
chemical_list: D001672:Biocompatible Materials; D006885:Hydroxybutyrates; D011091:Polyesters; C425330:bioactive glass 45S5; C003182:poly-beta-hydroxybutyrate; D000094122:Polyhydroxybutyrates