title: Fresh and in vitro osteodifferentiated human amniotic membrane, alone or associated with an additional scaffold, does not induce ectopic bone formation in Balb/c mice.
abstract: The human amniotic membrane (hAM) has been successfully used as a natural carrier containing amniotic mesenchymal stromal cells, epithelial cells and growth factors. It has a little or no immunogenicity, and possesses useful anti-microbial, anti-inflammatory, anti-fibrotic and analgesic properties. It has been used for many years in several indications for soft tissue repair. We previously reported that hAM represents a natural and preformed sheet containing highly potent stem cells, and could thus be used for bone repair. Indeed, native hAM possesses pre-osteoblastic potential that can easily be stimulated, even as far as mineralization, by means of in vitro osteogenic culture. However, cell culture induces damage to the tissue, as well as to cell phenotype and function. The aim of this study was to evaluate new bone formation by fresh and in vitro osteodifferentiated hAM, alone or associated with an additional scaffold presenting osteoinductive properties. Moreover, we also aimed to determine the effect of in vitro hAM pre-osteodifferentiation on its in vivo biocompatibility/tissue degradation. Results showed that neither fresh nor osteodifferentiated hAM induced ectopic bone formation, whether or not it was associated with the osteoinductive scaffold. Secondly, fresh and osteodifferentiated hAM presented similar in vivo tissue degradation, suggesting that in vitro hAM pre-osteodifferentiation did not influence its in vivo biocompatibility.
authors.affiliation: Paediatric Surgery Service, University Hospital of Besancon, Besançon, France.
authors.forename: Romain
authors.initials: R
authors.lastname: Laurent
authors.affiliation: Novotec, Lyon, France.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Nallet
authors.affiliation: Paediatric Surgery Service, University Hospital of Besancon, Besançon, France.|Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France.
authors.forename: Benoit
authors.initials: B
authors.lastname: de Billy
authors.affiliation: Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France.|Orthopaedic, Traumatology and Plastic Surgery Service, University Hospital of Besancon, Besançon, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Obert
authors.affiliation: Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Nicod
authors.affiliation: Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France.|Maxillofacial Surgery Service, University Hospital of Besancon, Besançon, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Meyer
authors.affiliation: Inserm U957, Laboratory for Pathophysiology of Bone Resorption, Faculty of Medicine, University of Nantes, Nantes, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Layrolle
authors.affiliation: Department of Maxillofacial Surgery, Plastic - Reconstructive and Aesthetic Surgery, Hand Surgery, University Hospital of Dijon, Dijon, France.
authors.forename: Narcisse
authors.initials: N
authors.lastname: Zwetyenga
authors.affiliation: Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France. fgindraux@chu-besancon.fr.|Orthopaedic, Traumatology and Plastic Surgery Service, University Hospital of Besancon, Besançon, France. fgindraux@chu-besancon.fr.
authors.forename: Florelle
authors.initials: F
authors.lastname: Gindraux
mesh_terms: D000650:Amnion / Q000166:cytology*; D000818:Animals; D018786:Bone Substitutes / Q000737:chemistry; D018929:Cell Culture Techniques; D002454:Cell Differentiation; D002478:Cells, Cultured; D005260:Female; D006801:Humans; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000166:cytology*; D008807:Mice, Inbred BALB C; D010012:Osteogenesis; D054457:Tissue Scaffolds / Q000737:chemistry
chemical_list: D018786:Bone Substitutes
keywords: Biocompatibility; Bone; Ectopic; Immune reaction; Mice; Osteogenic potential