Osteogenesis in rats with an inductive bovine composite.
J Orthop Res
; 6(3): 324-34, 1988.
Article
en En
| MEDLINE
| ID: mdl-3357082
ABSTRACT
Subcutaneous (S.C.) implantation of allogeneic demineralized bone matrix in rats results in endochondral bone formation. In contrast, implants of bovine demineralized bone matrix in rat S.C. tissue show inconsistent cartilage and bone formation, presumably due to an intense inflammatory reaction at the implant site. To overcome this response, a partially purified bone inducing extract was prepared from bovine bone by a series of steps that included demineralization, guanidine/HCl extraction, gel filtration, and cation exchange chromatography. To develop a carrier, the inactive guanidine/HCl-extracted matrix was then trypsinized to remove the inflammatory and immunogenic components, thus yielding a predominantly collagenous matrix. Bovine composites were prepared by combining different amounts of the bone inducing extract with a carrier that consisted of the trypsinized bone matrix and purified soluble bovine dermal collagen. Subcutaneous implantation of the composite preparation resulted in dose-dependent endochondral bone formation in rats. The inductive activity and the low-level inflammatory response were comparable to allogeneic implants.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Osteogénesis
/
Matriz Ósea
/
Colágeno
Límite:
Animals
Idioma:
En
Revista:
J Orthop Res
Año:
1988
Tipo del documento:
Article