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Bone Recuperation After rhBMP-2 Insertion in Alcoholic Animals-Experimental Study.
Bruna G dos S Kotake, Leda M P Salzedas, Edilson Ervolino
1Department of Morphology, Physiology and Basic Pathology, Faculty of Dentistry of Ribeirao Preto, University of Sao Paulo-USP., Av. Do Cafe s/n, Ribeirao Preto, SP- Brazil. jpmissa@forp.usp.br.
Current Pharmaceutical Design
|May 1, 2015
Summary
This study shows that a collagen sponge effectively delivers bone morphogenetic protein-2 (rhBMP-2) to enhance bone healing, even in the presence of alcohol. The carrier improved bone formation in rats with alcohol-induced bone defects.
Area of Science:
- Orthopedics
- Regenerative Medicine
- Biomaterials Science
Background:
- Alcoholism impairs bone repair processes.
- Recombinant human bone morphogenetic protein-2 (rhBMP-2) shows potential for bone healing.
- Collagen sponges are used as carriers for growth factors in bone regeneration.
Purpose of the Study:
- To investigate the efficacy of rhBMP-2 delivered via a collagen sponge for bone defect repair in an alcohol-exposed rat model.
- To evaluate the impact of alcoholism on bone healing when treated with rhBMP-2 and a collagen carrier.
Main Methods:
- Eighty rats were divided into alcohol-exposed and control groups, each with subgroups receiving vehicle, rhBMP-2 alone, collagen sponge alone, or rhBMP-2/collagen sponge.
- Bone defects were created on rat calvaria and treated with different combinations.
- Radiographic, histological, and immunohistochemical analyses were performed at 4 and 6 weeks post-operation.
Main Results:
- rhBMP-2 treatment significantly increased new bone formation at 6 weeks, irrespective of carrier use or alcohol exposure.
- Osteocalcin and bone sialoprotein were upregulated in rhBMP-2 treated groups.
- Quantitative stereology revealed enhanced bone volume with rhBMP-2, particularly when combined with the collagen carrier in alcohol-exposed rats.
Conclusions:
- The collagen sponge carrier is effective for delivering rhBMP-2, promoting bone healing even in the context of alcohol consumption.
- The combination of rhBMP-2 and a collagen carrier demonstrates significant potential for treating bone defects in patients with alcoholism.
