Bone Regeneration in rat using a gelatin/bioactive glass nanocomposite scaffold along with endothelial cells (HUVECs)

Kazemi, M. and Azami, M. and Johari, B. and Ahmadzadehzarajabad, M. and Nazari, B. and Kargozar, S. and Hajighasemlou, S. and Mozafari, M. and Soleimani, M. and Samadikuchaksaraei, A. and Farajollahi, M. (2018) Bone Regeneration in rat using a gelatin/bioactive glass nanocomposite scaffold along with endothelial cells (HUVECs). International Journal of Applied Ceramic Technology.

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In our previous study, a three-dimensional gelatin/bioactive glass nanocomposite scaffold with a total porosity of about 85 and pore sizes ranging from 200 to 500 μm was prepared through layer solvent casting combined with lamination technique. The aim of this study was to evaluate in vitro biocompatibility and in vivo bone regeneration potential of these scaffolds with and without endothelial cells when implanted into a critical-sized rat calvarial defect. MTT assay, SEM observation, and DAPI staining were used to evaluate cell viability and adhesion in macroporous scaffolds and results demonstrated that the scaffolds were biocompatible enough to support cell attachment and proliferation. To investigate the in vivo osteogenesis of the scaffold, blank scaffolds and endothelial/scaffold constructs were implanted in critical-sized defects, whereas in control group defects were left untreated. Bone regeneration and vascularization were evaluated at 1, 4, and 12 weeks postsurgery by histological, immunohistochemical, and histomorphometric analysis. It was shown that both groups facilitated bone growth into the defect area but improved bone regeneration was seen with the incorporation of endothelial cells. The data showed that the porous Gel/BaG nanocomposite scaffolds could well support new bone formation, indicating that the proposed strategy is a promising alternative for tissue-engineered bone defects. © 2018 The American Ceramic Society.

Item Type: Article
Additional Information: cited By 0; Article in Press
Uncontrolled Keywords: Biocompatibility; Bone; Cell engineering; Cytology; Defects; Endothelial cells; Glass; Laminating; Nanocomposites; Pore size; Rats; Tissue, Bone tissue engineering; Calvarial defects; Critical sized defects; Glass nano-composites; Histomorphometric analysis; In-vivo; Nanocomposite scaffolds; Tissue-engineered bones, Scaffolds (biology)
Subjects: WE Musculoskeletal System
Depositing User: eprints admin
Date Deposited: 08 Dec 2018 10:51
Last Modified: 30 Jul 2019 07:19

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