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- W2068385744 abstract "Background: Reconstruction of large craniofacial bone defects is a challenge using bone transplants or alloplastic materials. The use of bone morphogenetic protein (BMP)-2 together with a suitable carrier is an attractive option that may facilitate new bone formation. The authors have developed a hydrogel that is formed in situ by the cross-linking of multifunctional hyaluronic acid and polyvinyl alcohol derivatives mixed with hydroxyapatite nanoparticles, in the presence of BMP-2. The aim of this study was to evaluate the suitability of the hydrogel as a carrier for BMP-2 in repairing critical size cranial defects in a minipig model. Methods: Cranial defects (2 × 4 cm) were created in 14 minipigs. The experimental groups were as follows: group 1, craniotomy and application of 5 ml of hydrogel with 1.25 mg of BMP-2 (n = 6); group 2, craniotomy and application of 5 ml of hydrogel without BMP-2 (n = 6); and group 3, craniotomy with no further treatment (n = 2). Results: After 3 months, computed tomographic and histologic examinations were performed. There was spontaneous ossification in the untreated group, but the healing was incomplete. The hydrogel alone demonstrated no further effects. The addition of 1.25 mg of BMP-2 to the hydrogel induced a greater than 100 percent increase in bone volume (p = 0.003) and complete healing of the defects. Histologic examination revealed compact lamellar bone in the BMP group without intertrabecular fibrous tissue, as was seen in the other groups. The hydrogel was resorbed completely within 3 months and, importantly, caused no inflammatory reaction. Conclusion: The injectable hydrogel may be favorable as a BMP-2 carrier for bone reconstruction." @default.
- W2068385744 created "2016-06-24" @default.
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- W2068385744 date "2010-05-01" @default.
- W2068385744 modified "2023-10-07" @default.
- W2068385744 title "Bone Morphogenetic Protein-2 Delivered by Hyaluronan-Based Hydrogel Induces Massive Bone Formation and Healing of Cranial Defects in Minipigs" @default.
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- W2068385744 doi "https://doi.org/10.1097/prs.0b013e3181d629dc" @default.
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