Bone regeneration in ceramic scaffolds with variable concentrations of PDRN and rhBMP-2.
Sci Rep
; 11(1): 11470, 2021 06 01.
Article
em En
| MEDLINE
| ID: mdl-34075179
This study evaluated the bone regeneration capacity and mechanical properties of block-type hydroxyapatite (HA)/tricalcium phosphate (TCP) scaffolds in response to different concentrations of polydeoxyribonucleotide (PDRN) and recombinant human bone morphogenic protein 2 (rhBMP-2). Thirty-two male white rabbits were used as a model of calvarial bone defect and classified into eight groups according to type and concentration of growth factor administered, viz., control group (only HA/TCP scaffold), scaffold + PDRN (0.1, 1, 5, and 10 mg/mL each) and scaffold + rhBMP-2 (0.01, 0.05, and 0.1 mg/mL each). The specimens were evaluated using histomorphometric and radiological analyses. Histomorphometric analyses indicated that the administration of PDRN did not increase bone formation. However, significant increases in bone formation were observed with the administration of rhBMP-2 at 0.05 and 0.10 mg/mL on week 8 compared to the control (p < 0.05). Radiological analyses revealed a significant increase in bone formation at week 8 with the administration of PDRN at 5 mg/mL and 10 mg/mL, and rhBMP-2 at 0.05 or 0.10 mg/mL compared to the control (p < 0.05). Our findings show that block-type HA/TCP scaffolds possess sufficient mechanical strength and bone regeneration capacity when used with optimal concentrations of growth factors.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oligonucleotídeos
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Crânio
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Regeneração Óssea
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Cerâmica
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Proteína Morfogenética Óssea 2
Tipo de estudo:
Evaluation_studies
/
Prognostic_studies
Limite:
Animals
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Humans
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Male
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2021
Tipo de documento:
Article