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  • Title: Osteoinductivity potential of rhBMP-2 associated with two carriers in different dosages.
    Author: Abdala PM, Iyomasa MM, Sato S, Bentley MV, Pitol DL, Regalo SC, Siéssere S, Issa JP.
    Journal: Anat Sci Int; 2010 Dec; 85(4):181-8. PubMed ID: 20204566.
    Abstract:
    The objective of this study was to evaluate bone formation after application of different doses of recombinant human bone morphogenetic protein-2 (rhBMP-2) combined with monoolein or poloxamer gels, in critical bone defects of rats. Forty-five Wistar rats were divided into nine treatment groups with five animals each: I: application of 1 µg rhBMP-2 + monoolein; II: 3 µg rhBMP-2 + monoolein; III: 7 µg rhBMP-2 + monoolein; IV: 1 µg rhBMP-2 + poloxamer; V: 3 µg rhBMP-2 + poloxamer; VI: 7 µg rhBMP-2 + poloxamer; VII: monoolein only; VIII: poloxamer only; and IX: critical bone defect only. A critical-sized defect of 6 mm diameter was produced in the left parietal bone and it was filled with gels of the above mentioned treatments. After 2 weeks, the calvarial bones were removed for histological processing. Bone formation in the groups that received poloxamer gel and rhBMP-2 was not significantly different from the control group (IX). Groups receiving monoolein and rhBMP-2 (1 and 3 µg) and those that received only the carriers (VII and VIII) had less bone formation in relation to the control. The association of rhBMP-2 to both poloxamer and monoolein did not exhibit any significant differentiation in bone formation in comparison with the control group.
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