OBJECTIVE: this study investigated the in vitro effects of a chitosan-gelatin scaffold on growth and osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMMSCs) in three-dimensional (3D) cultures and evaluated the biomaterial biocompatibility and degradability after its grafting into tooth sockets of rats. DESIGN: a porous chitosan-gelatin scaffold cross-linked by glutaraldehyde was synthesised and characterised by light (LM), scanning electronic microscopy (SEM), energy dispersion spectroscopy (EDS) and X-ray diffraction (XRD). Rat BMMSCs were isolated, expanded and seeded onto scaffold using Dulbecco's Modified Eagle's Medium (DMEM) with or without an osteogenic supplement. Cell viability by MTT assay, alkaline phosphatase (ALP) activity and morphological LM and SEM analysis were performed after 1, 3, 8 and 14 days in culture. Free-cell scaffolds were implanted into tooth sockets of Lewis rats after upper first molars extraction. Fifteen male recipient rats were sacrificed after 5, 21 and 35 days for histological analysis. RESULTS: scaffold characterisation revealed the porous structure, organic and amorphous content. This biomaterial promoted the adhesion, spreading and in vitro viability of the BMMSCs. Osteogenic-supplemented media did not improve the cellular response compared to DMEM. The biomaterial presented high biocompatibility and slow biodegradation in vivo. Remains of biomaterial were still observed at 21 and 35 days after implantation. However, on the 21st day, alveolar bone and epithelial healing were completely established. CONCLUSIONS: these results indicate that chitosan-gelatin support the adhesion and osteogenic differentiation of rat BMMSCs and offer adequate physico-chemical and biological properties for use as scaffolds in bone tissue engineering-related strategies.
OBJECTIVE: this study investigated the in vitro effects of a chitosan-gelatin scaffold on growth and osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMMSCs) in three-dimensional (3D) cultures and evaluated the biomaterial biocompatibility and degradability after its grafting into tooth sockets of rats. DESIGN: a porous chitosan-gelatin scaffold cross-linked by glutaraldehyde was synthesised and characterised by light (LM), scanning electronic microscopy (SEM), energy dispersion spectroscopy (EDS) and X-ray diffraction (XRD). Rat BMMSCs were isolated, expanded and seeded onto scaffold using Dulbecco's Modified Eagle's Medium (DMEM) with or without an osteogenic supplement. Cell viability by MTT assay, alkaline phosphatase (ALP) activity and morphological LM and SEM analysis were performed after 1, 3, 8 and 14 days in culture. Free-cell scaffolds were implanted into tooth sockets of Lewis rats after upper first molars extraction. Fifteen male recipient rats were sacrificed after 5, 21 and 35 days for histological analysis. RESULTS: scaffold characterisation revealed the porous structure, organic and amorphous content. This biomaterial promoted the adhesion, spreading and in vitro viability of the BMMSCs. Osteogenic-supplemented media did not improve the cellular response compared to DMEM. The biomaterial presented high biocompatibility and slow biodegradation in vivo. Remains of biomaterial were still observed at 21 and 35 days after implantation. However, on the 21st day, alveolar bone and epithelial healing were completely established. CONCLUSIONS: these results indicate that chitosan-gelatin support the adhesion and osteogenic differentiation of rat BMMSCs and offer adequate physico-chemical and biological properties for use as scaffolds in bone tissue engineering-related strategies.
Authors: Anthie Georgopoulou; Fotios Papadogiannis; Aristea Batsali; John Marakis; Kalliopi Alpantaki; Aristides G Eliopoulos; Charalampos Pontikoglou; Maria Chatzinikolaidou Journal: J Mater Sci Mater Med Date: 2018-05-05 Impact factor: 3.896
Authors: Rayssa de Sousa Victor; Adillys Marcelo da Cunha Santos; Bianca Viana de Sousa; Gelmires de Araújo Neves; Lisiane Navarro de Lima Santana; Romualdo Rodrigues Menezes Journal: Materials (Basel) Date: 2020-11-06 Impact factor: 3.623
Authors: Hamid Bahramian Renani; Masood Ghorbani; Batool Hashemibeni Beni; Z Karimi; Mm Mirhosseini; H Zarkesh; A Kabiri Journal: Adv Biomed Res Date: 2012-10-31