Repair of Ulnar Segmental Defect by Recombinant Human Bone Morphogenetic Protein-2 in Dogs

Journal of Veterinary Medical Science

Syoji YOKOTA¹  Satoru MATSUNAGA³  Tsuyoshi KADOSAWA²  Nobuo SASAKI³  Ryohei NISHIMURA³  Manabu MOCHIZUKI³  Satoshi KOKUBO¹  Teruo ITOH³ 

[1] Yamanouchi Pharmaceutical Co., Ltd.;Laboratory of Veterinary Surgery, Department of Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University;Laboratory of Veterinary Surgery, Division of Veterinary Medical Sciences, Graduate School of Agriculture and Life Science, The University of Tokyo

关键词: canine;    rhBMP-2;    ulnar defect;   

DOI  :  10.1292/jvms.60.451

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(28)Cited-By(33)The efficacy of recombinant human bone morphogenetic protein-2 (rhBMP-2) combined with poly D, L lactic-co-glycolic acid (PLGA)/gelatin sponge complex (PGS) as a carrier on the repair of segmental long-bone defects was evaluated using an ulnar model in dogs. The defect was 2 cm in length and was fixed with bone plating. After implantation of PGS with or without rhBMP-2, the repair process of the defect was evaluated by serial radiography until 16 postoperative weeks. All defects treated with 160 μg or 640 μg of rhBMP-2/PGS revealed bone union radiographically by 12 postoperative weeks, whereas all defects treated with PGS alone revealed no radiographic evidence of healing throughout the experimental period. In defects treated with 40 μg of rhBMP-2/PGS, new bone appeared partially at the defects but did not accomplish union. Bone mineral contents at the defect sites after harvest at 16 weeks postoperatively were significantly (p<0.05) higher in those treated with 160 μg or 640 μg of rhBMP-2 than in those treated with 40 μg of rhBMP-2 or PGS alone. Histologically, defects radiographically diagnosed as having achieved union showed the appearance of cortical bone and bone marrow cells. These findings suggest the use of rhBMP-2/PGS as a potential bone graft substitute in reconstructive surgery in dogs.

【 授权许可】

Unknown