title: Repair of experimentally induced large osteochondral defects in rabbit knee with various concentrations of Escherichia coli-derived recombinant human bone morphogenetic protein-2.
abstract: Effective therapies for the regeneration of large osteochondral defects are still lacking; however, various approaches have been used. We evaluated the efficacy of Escherichia coli-derived dimeric recombinant human BMP-2 (E-rhBMP-2) for the repair of large osteochondral defects in a rabbit model. Osteochondral defects made in the femoral patellar groove of the knee were treated by transplanting gelatin sponges onto which no or various doses of E-rhBMP-2 were loaded. The outcomes were compared with those of an untreated control group four, 12 and 24 weeks after transplantation. At early time points, the cartilage tissue was repaired in a dose-dependent manner, and bone repair was accelerated in the defects treated with high doses of E-rhBMP-2. At 24 weeks, the repair of cartilage tissue was better with E-rhBMP-2 treatment, even at low doses, than without E-rhBMP-2 treatment. Our findings suggest that the use of E-rhBMP-2 improves and accelerates the repair of osteochondral defects in a rabbit model.
authors.affiliation: Department of Orthopaedic Surgery, Hanwa Joint Reconstruction Center Hospital, 3176 Fukai-kita-machi, Naka-ku Sakai 599-8271, Japan.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Tokuhara
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Wakitani
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Imai
authors.forename: Amu
authors.initials: A
authors.lastname: Kawaguchi
authors.forename: Kenji
authors.initials: K
authors.lastname: Fukunaga
authors.forename: Mitsunari
authors.initials: M
authors.lastname: Kim
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Kadoya
authors.forename: Kunio
authors.initials: K
authors.lastname: Takaoka
mesh_terms: D000818:Animals; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins / Q000494:pharmacology*; D002358:Cartilage, Articular / Q000187:drug effects* / Q000293:injuries / Q000473:pathology; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000378:metabolism*; D005260:Female; D006801:Humans; D010329:Patella / Q000187:drug effects* / Q000293:injuries / Q000473:pathology; D011817:Rabbits; D011994:Recombinant Proteins / Q000494:pharmacology*; D013264:Stifle; D016212:Transforming Growth Factor beta / Q000494:pharmacology*; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins; D011994:Recombinant Proteins; D016212:Transforming Growth Factor beta; C499469:recombinant human bone morphogenetic protein-2