Characterization of the physical and mechanical properties of femoral bone defects filled with polyanionic collagen scaffolds in ovariectomized rats
AUTOR(ES)
Cunha, Marcelo Rodrigues, Santos Jr, Arnaldo Rodrigues, Petinari, Leandro, Goissis, Gilberto, Nonaka, Keico Okino, Wang, Charles Chenwei, Genari, Selma Candelária
FONTE
Materials Research
DATA DE PUBLICAÇÃO
2010-06
RESUMO
The aim of this study was to evaluate the effect of scaffolds native or polyanionic collagen matrix (submitted to alkaline treatment for 48 or 96 hours, PCM48 or PCM96, respectively) on the repair of osteoporosis bone fractures resulting from the gonadal hormone alterations caused by ovariectomy in rats undergoing hormone replacement therapy. The physical and mechanical characteristics of bone were analyzed. Macroscopic analysis revealed the absence of pathological alterations in the implanted areas. The percent mineral matter and bone mineral density of the femurs were lower in ovariectomized rats. The mechanical strength of newly formed bone was greater in the area receiving the PCM96 scaffolds compared to the area implanted with the native scaffolds. The PCM96 scaffold is the best choice for bone repair in animals with hormone deficiency since it promotes faster bone growth and good mechanical strength.
Documentos Relacionados
- Three-dimensional implants of polyanionic collagen in bone defects produced in the femur of ovariectomized rats
- Mechanical properties of femoral trabecular bone in dogs
- Bone regeneration in surgically created defects filled with autogenous bone: an epifluorescence microscopy analysis in rats
- Repair process of surgical defects filled with autogenous bone grafts in tibiae of diabetic rats
- Estrogen regulates the rate of bone turnover but bone balance in ovariectomized rats is modulated by prevailing mechanical strain