fulltext.study @t Gmail

In vitro-cultivation of human periosteum derived cells in bioresorbable polymer-TCP-composites

Paper ID Volume ID Publish Year Pages File Format Full-Text
13499 861 2002 8 PDF Available
Title
In vitro-cultivation of human periosteum derived cells in bioresorbable polymer-TCP-composites
Abstract

Bone replacement materials for reconstruction of bone defects must be biocompatible and biodegradable and must have osteoconductive or even osteogenic potential. Ideally, their shape should also be adaptable to the defect and they should possess long-term adaptability to the biomechanical situation at the implantation site.Human mesenchymal stem cells of the cambium layer of the periosteum were cultivated, placed in a fibrin suspension on a preformed carrier structure (PGLA polymer+β-TCP), and cultivated under conditions of osteogenic differentiation. After 10, 20, 30, and 40 days, histological examination was performed, alkaline phosphatase activity and levels of osteocalcin, DNA, and collagen were determined, and the influence of addition of TGF-β1 at a concentration of 5 ng/ml to the culture medium was investigated.Demonstration of bone-specific marker proteins indicated that the in vitro combination of mesenchymal stem cells, PGLA polymer, β-TCP, and fibrin resulted in de-novo synthesis of human preosseous tissue, while addition of TGF-β1 resulted in greater new bone formation with significantly higher concentrations of marker proteins. Histological examination showed the presence of newly formed bone at the surface of the implant.As compared with the use of structured TCP or hydroxyapatite implants as in earlier works, use of a combination of autologous cell material, PGLA polymer, and β-TCP results in a malleable, vital implant that is adaptable to the bone defect. This combination thus may represent a new option for the treatment of bone defects.

Keywords
Bone engineering; Mesenchymal stem cells; Transforming growth factor β1; Polymer; β-tricalcium phosphate
First Page Preview
In vitro-cultivation of human periosteum derived cells in bioresorbable polymer-TCP-composites
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 11, June 2002, Pages 2303–2310
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us