Calcium phosphate fibers coated with collagen: In vivo evaluation of the effects on bone repair
Bio-Medical Materials and Engineering, ISSN: 1878-3619, Vol: 27, Issue: 2-3, Page: 259-273
2016
- 5Citations
- 23Captures
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Metrics Details
- Citations5
- Citation Indexes5
- CrossRef2
- Captures23
- Readers23
- 23
Article Description
The aim of this study was to assess the characteristics of the CaP/Col composites, in powder and fiber form, via scanning electron microscopy (SEM), pH and calcium release evaluation after immersion in SBF and to evaluate the performance of these materials on the bone repair process in a tibial bone defect model. For this, four different formulations (CaP powder - CaPp, CaP powder with collagen - CaPp/Col, CaP fibers - CaPf and CaP fibers with collagen - CaPf/Col) were developed. SEM images indicated that both material forms were successfully coated with collagen and that CaPp and CaPf presented HCA precursor crystals on their surface. Although presenting different forms, FTIR analysis indicated that CaPp and CaPf maintained the characteristic peaks for this class of material. Additionally, the calcium assay study demonstrated a higher Ca uptake for CaPp compared to CaPf for up to 5 days. Furthermore, pH measurements revealed that the collagen coating prevented the acidification of the medium, leading to higher pH values for CaPp/Col and CaPf/Col. The histological analysis showed that CaPf/Col demonstrated a higher amount of newly formed bone in the region of the defect and a reduced presence of material. In summary, the results indicated that the fibrous CaP enriched with the organic part (collagen) glassy scaffold presented good degradability and bone-forming properties and also supported Runx2 and RANKL expression. These results show that the present CaP/Col fibrous composite may be used as a bone graft for inducing bone repair.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84983385939&origin=inward; http://dx.doi.org/10.3233/bme-161581; http://www.ncbi.nlm.nih.gov/pubmed/27567780; https://journals.sagepub.com/doi/full/10.3233/BME-161581; http://www.medra.org/servlet/aliasResolver?alias=iospress&doi=10.3233/BME-161581; https://dx.doi.org/10.3233/bme-161581; https://content.iospress.com:443/articles/bio-medical-materials-and-engineering/bme1581
SAGE Publications
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