Assessment of polyglycolic acid mesh and bioactive glass for soft-tissue engineering scaffolds

Day, Richard M, Boccaccini, Aldo R, Shurey, Sandra, Roether, Judith A, Forbes, Alastair, Hench, Larry L and Gabe, Simon M (2004) Assessment of polyglycolic acid mesh and bioactive glass for soft-tissue engineering scaffolds. Biomaterials, 25 (27). pp. 5857-66. ISSN 0142-9612

Full text not available from this repository. (Request a copy)

Abstract

Sufficient neovascularization of neotissue is currently a limiting factor for the engineering of large tissue constructs. 45S5 Bioglass has been investigated extensively in bone tissue engineering but there has been relatively little previous research on its application to soft-tissue engineering. The objectives of this study were to investigate the use of 45S5 Bioglass in soft-tissue engineering scaffolds using in vitro and in vivo models. A fibroblast cell line (208F) was used for in vitro evaluation of surfaces coated with 45S5 Bioglass. Increased proliferation of fibroblasts was observed after growth on polystyrene surfaces coated with low concentrations (0.01-0.2%wt/vol) of 45S5 Bioglass for 24 h in vitro, determined as a change in total cell number by measuring lactate dehydrogenase. At higher concentrations of 45S5 Bioglass and longer periods of incubation (48 and 72 h) on coated surfaces, cell proliferation was reduced. Light microscopy revealed that the morphology of fibroblasts grown on 45S5 Bioglass-coated surfaces was not altered at low concentrations, but at higher concentrations fibroblasts became vacuolated. Enzyme-linked immunosorbent assay of conditioned culture medium collected from fibroblasts grown for 24 h on surfaces coated with low concentrations of 45S5 Bioglass (0.01%wt/vol) was found to contain significantly higher concentrations of vascular endothelial growth factor. Histological examination of polyglycolic acid (PGA)/45S5 Bioglass composite scaffolds that had been implanted subcutaneously into rats revealed that 45S5 Bioglass-coated meshes were well tolerated. Light microscopy revealed that neovascularization into 45S5 Bioglass-coated meshes was significantly increased at 28 and 42 days. Electron microscopy revealed fibroblasts adhering closely to the PGA mesh but not to 45S5 Bioglass particles. The apparent ability of 45S5 Bioglass incorporated into scaffolds to increase neovascularization would be extremely beneficial during the engineering of larger soft-tissue constructs.

Item Type: Article
Uncontrolled Keywords: animals,biocompatible materials,cell line,cell proliferation,cells, cultured,ceramics,collagen,erythrocytes,fibroblasts,glass,l-lactate dehydrogenase,microscopy, electron,microscopy, electron, scanning,microscopy, electron, transmission,neovascularization, physiologic,polyglycolic acid,polystyrenes,rats,time factors,tissue engineering,vascular endothelial growth factor a
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
University of East Anglia > Faculty of Medicine and Health Sciences > Research Groups > Gastroenterology and Gut Biology
University of East Anglia > Faculty of Medicine and Health Sciences > Research Groups > Nutrition
Depositing User: Pure Connector
Date Deposited: 06 Aug 2014 11:40
Last Modified: 25 Jul 2018 09:54
URI: https://ueaeprints.uea.ac.uk/id/eprint/49620
DOI: 10.1016/j.biomaterials.2004.01.043

Actions (login required)

View Item