Artículos de revistas
Intra-bone marrow injection of mesenchymal stem cells improves the femur bone mass of osteoporotic female rats
Fecha
2010Registro en:
CONNECTIVE TISSUE RESEARCH, v.51, n.6, p.426-433, 2010
0300-8207
10.3109/03008201003597049
Autor
OCARINO, Natalia de Melo
BOELONI, Jankerle Neves
JORGETTI, Vanda
GOMES, Dawidson Assis
GOES, Alfredo Miranda
SERAKIDES, Rogeria
Institución
Resumen
The effect of intra-bone injection of differentiated rat bone marrow mesenchymal stem cells (BMMSCs) into the femur of osteoporotic female rats was studied. Osteoporosis was induced in Wistar female rats by bilateral ovariectomy. Then, 0.75 million BMMSCs isolated from healthy rats were injected into the femurs of osteoporotic rats. Histomorphometric analysis and histology clearly revealed improvements in the treated group as compared to untreated group. In 2 months, the femurs of treated rats, unlike untreated rats, showed trabecular bone percentage almost similar to the femurs from control healthy rats. To confirm the origin of newly formed bone, the experiment was repeated with BMMSCs isolated from green fluorescent protein transgenic rats. Confocal microscopy demonstrated green fluorescent protein-positive cells at the surface of trabecular bone of the treated rats. We investigated in vitro osteogenic differentiation of BMMSCs isolated from osteoporotic rats by studying alkaline phosphatase activity, collagen synthesis, and the ability to form mineralized nodules. Osteoporotic BMMSCs showed less differentiation capabilities as compared to those isolated from healthy rats. The results clearly demonstrated the importance of BMMSCs in osteoporosis and that the disease can be treated by injection of BMMSCs.