PURPOSE: The purpose of this study was to test the effect of the combination of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) incorporated into a fluorohydroxyapatite (FHA) scaffold on bone regeneration in cylindrical defects in the edentulous mandibular ridge of minipigs. MATERIALS AND METHODS: Two mandibular premolar teeth were extracted bilaterally in 8 adult minipigs. After 2 months, 4 standardized defects of 3.5 mm diameter and 8 mm depth were created in each root site. The defects were randomly grafted with autogenous mandibular bone, FHA alone, PRP-FHA, or MSCs-PRP-FHA. A resorbable collagen membrane was placed over the defect area and the flaps were sutured. The animals were sacrificed 3 months later and biopsy samples were taken from the defect sites for histologic and histomorphometric assessment. RESULTS: There was no evidence of inflammation or adverse tissue reaction with either treatment. MSCs-PRP-FHA-treated sites showed new vital bone between residual grafting particles. PRP-FHA- and FHA-treated sites showed residual particles in a background of marrow soft tissue with a moderate quantity of newly formed bone. Autogenous bone (46.97%) and MSCs-PRP-FHA (45.28%) produced a significantly higher amount of vital bone than PRP-FHA (37.95%), or FHA alone (36.03%). Further, the MSCs-PRP-FHA-treated defects showed a significantly higher percentage of contact between graft particles and newly formed bone compared with PRP-FHA and FHA group (59.23% vs 48.37% and 46.43%, respectively). CONCLUSIONS: Our results suggest that, in this animal model, the addition of MSCs to PRP-FHA enhances bone formation after 3 months.
PURPOSE: The purpose of this study was to test the effect of the combination of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) incorporated into a fluorohydroxyapatite (FHA) scaffold on bone regeneration in cylindrical defects in the edentulous mandibular ridge of minipigs. MATERIALS AND METHODS: Two mandibular premolar teeth were extracted bilaterally in 8 adult minipigs. After 2 months, 4 standardized defects of 3.5 mm diameter and 8 mm depth were created in each root site. The defects were randomly grafted with autogenous mandibular bone, FHA alone, PRP-FHA, or MSCs-PRP-FHA. A resorbable collagen membrane was placed over the defect area and the flaps were sutured. The animals were sacrificed 3 months later and biopsy samples were taken from the defect sites for histologic and histomorphometric assessment. RESULTS: There was no evidence of inflammation or adverse tissue reaction with either treatment. MSCs-PRP-FHA-treated sites showed new vital bone between residual grafting particles. PRP-FHA- and FHA-treated sites showed residual particles in a background of marrow soft tissue with a moderate quantity of newly formed bone. Autogenous bone (46.97%) and MSCs-PRP-FHA (45.28%) produced a significantly higher amount of vital bone than PRP-FHA (37.95%), or FHA alone (36.03%). Further, the MSCs-PRP-FHA-treated defects showed a significantly higher percentage of contact between graft particles and newly formed bone compared with PRP-FHA and FHA group (59.23% vs 48.37% and 46.43%, respectively). CONCLUSIONS: Our results suggest that, in this animal model, the addition of MSCs to PRP-FHA enhances bone formation after 3 months.
Authors: Lobna Abdel Aziz Aly; Hala El-Menoufy; Amal Hassan; Alyaa Ragae; Hazem Mahmoud Atta; Nagwa Kamal Roshdy; Laila Ahmed Rashed; Dina Sabry Journal: Int J Stem Cells Date: 2011-06 Impact factor: 2.500
Authors: Marcelo de Oliveira E Silva; André Antonio Pelegrine; Alexandre Alves Pinheiro da Silva; Luiz Roberto Manhães Júnior; Rafael de Mello E Oliveira; Silvana Gaiba França; Antonio Carlos Aloise; Lydia Masako Ferreira Journal: Int J Biomater Date: 2012-08-29
Authors: Marcel Betsch; Johannes Schneppendahl; Simon Thuns; Monika Herten; Martin Sager; Pascal Jungbluth; Mohssen Hakimi; Michael Wild Journal: PLoS One Date: 2013-08-12 Impact factor: 3.240
Authors: Pascal Jungbluth; Jan-Peter Grassmann; Simon Thelen; Michael Wild; Martin Sager; Joachim Windolf; Mohssen Hakimi Journal: GMS Interdiscip Plast Reconstr Surg DGPW Date: 2014-11-24