title: Effects of chitosan-coated pressed calcium sulfate pellet combined with recombinant human bone morphogenetic protein 2 on restoration of segmental bone defect.
abstract: A chitosan-coated pressed calcium sulfate pellet combined with recombinant human bone morphogenetic protein 2 (rhBMP-2) has been developed with increased compressive strength and osteoinduction, but with a resorption profile only slightly slower than uncoated pellet. A radial segmental defect model of rabbit was used to study the restoration effect on defect treated with chitosan-coated pressed calcium sulfate pellet combined with rhBMP-2, coated pressed calcium sulfate pellet, and uncoated pressed calcium sulfate pellet. Nothing was implanted in the control group. After 4, 8, and 12 weeks, the results indicated that coated pressed calcium sulfate pellet combined with rhBMP-2 and coated pressed calcium sulfate pellet facilitated new bone formation on defected bone and that particularly the former was more effective than the latter.
authors: Department of Orthopedics, General Hospital of Chinese People's Liberation Army, Beijing, China.
authors: Xu
authors: X
authors: Cui
authors: Boxun
authors: B
authors: Zhang
authors: Yan
authors: Y
authors: Wang
authors: Yongliang
authors: Y
authors: Gao
mesh_terms: D000818:Animals; D001847:Bone Diseases / Q000473:pathology / Q000601:surgery*; D001853:Bone Marrow / Q000187:drug effects / Q000473:pathology; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins / Q000627:therapeutic use*; D018786:Bone Substitutes / Q000627:therapeutic use*; D002146:Bony Callus / Q000187:drug effects / Q000473:pathology; D002133:Calcium Sulfate / Q000627:therapeutic use*; D048271:Chitosan / Q000627:therapeutic use*; D020099:Coated Materials, Biocompatible / Q000627:therapeutic use*; D019245:Compressive Strength; D003238:Connective Tissue / Q000187:drug effects / Q000473:pathology; D004195:Disease Models, Animal; D010006:Osteoblasts / Q000187:drug effects / Q000473:pathology; D010012:Osteogenesis / Q000187:drug effects*; D018583:Pliability; D011817:Rabbits; D011884:Radius / Q000473:pathology / Q000601:surgery*; D011994:Recombinant Proteins / Q000627:therapeutic use*; D013997:Time Factors; D016212:Transforming Growth Factor beta / Q000627:therapeutic use*
chemical_list: D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins; D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D011994:Recombinant Proteins; D016212:Transforming Growth Factor beta; C499469:recombinant human bone morphogenetic protein-2; D048271:Chitosan; D002133:Calcium Sulfate