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Published in: Clinical Orthopaedics and Related Research® 12/2009

01-12-2009 | Symposium: Tribute to Dr. Marshall Urist: Musculoskeletal Growth Factors

Successful Spinal Fusion by E. coli-derived BMP-2-adsorbed Porous β-TCP Granules: A Pilot Study

Authors: Sho Dohzono, MD, Yuuki Imai, MD, PhD, Hiroaki Nakamura, MD, PhD, Shigeyuki Wakitani, MD, PhD, Kunio Takaoka, MD, PhD

Published in: Clinical Orthopaedics and Related Research® | Issue 12/2009

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Abstract

Bone morphogenetic proteins (BMPs) were originally identified as osteoinductive proteins. With cloning of BMP genes, studies of BMPs and their clinical application have advanced. However, with increasing clinical applications, drug delivery systems and production costs have become more important issues. To address these issues, we asked whether E. coli-derived rhBMP-2 (E-BMP-2)-adsorbed porous β-TCP granules could achieve posterolateral lumbar fusion in a rabbit model similar to autogenous bone grafts. Lumbar spinal fusion masses were evaluated by 3-D computed tomography, mechanical testing, and histological analyses 8 weeks after surgery. By these measures E-BMP-2-adsorbed β-TCP granules achieved lumbar spinal fusion in dose-dependent fashion in a rabbit model as well as autogenous bone graft. Our preliminary findings suggest E-BMP-2-adsorbed porous β-TCP could be a novel, effective alternative to autogenous bone grafting for generating new bone and promoting regenerative repair of bone, and potentially utilizable in the clinical setting for treating spinal disorders.
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Metadata
Title
Successful Spinal Fusion by E. coli-derived BMP-2-adsorbed Porous β-TCP Granules: A Pilot Study
Authors
Sho Dohzono, MD
Yuuki Imai, MD, PhD
Hiroaki Nakamura, MD, PhD
Shigeyuki Wakitani, MD, PhD
Kunio Takaoka, MD, PhD
Publication date
01-12-2009
Publisher
Springer-Verlag
Published in
Clinical Orthopaedics and Related Research® / Issue 12/2009
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI
https://doi.org/10.1007/s11999-009-0960-1

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