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Dimethyloxalylglycine-embedded Poly(ε-caprolactone) Fiber Meshes Promote Odontoblastic Differentiation of Human Dental Pulp-derived Cells.
Journal of Endodontics 2018 January
INTRODUCTION: The in vivo effect of prolyl hydroxylase inhibitors on the regeneration of the pulp-dentin complex is unclear. The purpose of this study was to investigate the effect of dimethyloxalylglycine (DMOG)-embedded poly(ε-caprolactone) fiber (PCLF/DMOG) on odontoblastic differentiation of human dental pulp-derived cells (hDPCs) by transplantation of the dentin slice model.
METHODS: The hDPCs were seeded onto electrospun PCLF and PCLF/DMOG in dentin slices and then transplanted into nude mice. The surface topography was evaluated for both PCLFs, and DMOG release from the PCLF/DMOG was examined. The effects of the PCLF/DMOG were assessed by histology and quantitative reverse transcription polymerase chain reaction.
RESULTS: The PCLF/DMOG-treated dentin slices showed higher cellularity with a palisading arrangement of hDPCs and organized collagen fibers. We found that the PCLF/DMOG significantly stimulated the expression of vascular endothelial growth factor, dentin sialoprotein, and bone sialoprotein in the hDPCs (P < .05) and mouse vascular endothelial growth factor A, mouse platelet endothelial cell adhesion molecule 1, and mouse neurofilament light polypeptide in the surrounding host cells (P < .05).
CONCLUSIONS: These results show that PCLF/DMOG has potential in pulp-dentin complex regeneration by promoting odontoblastic differentiation of hDPCs and by enhancing host cell recruitment, angiogenesis, and neurogenesis through the released DMOG-mediated cell responses.
METHODS: The hDPCs were seeded onto electrospun PCLF and PCLF/DMOG in dentin slices and then transplanted into nude mice. The surface topography was evaluated for both PCLFs, and DMOG release from the PCLF/DMOG was examined. The effects of the PCLF/DMOG were assessed by histology and quantitative reverse transcription polymerase chain reaction.
RESULTS: The PCLF/DMOG-treated dentin slices showed higher cellularity with a palisading arrangement of hDPCs and organized collagen fibers. We found that the PCLF/DMOG significantly stimulated the expression of vascular endothelial growth factor, dentin sialoprotein, and bone sialoprotein in the hDPCs (P < .05) and mouse vascular endothelial growth factor A, mouse platelet endothelial cell adhesion molecule 1, and mouse neurofilament light polypeptide in the surrounding host cells (P < .05).
CONCLUSIONS: These results show that PCLF/DMOG has potential in pulp-dentin complex regeneration by promoting odontoblastic differentiation of hDPCs and by enhancing host cell recruitment, angiogenesis, and neurogenesis through the released DMOG-mediated cell responses.
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