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In this study, we demonstrated that the use of zoledronic acid does not impair fracture healing, but results in superior callus size and resistance at the fracture site, which could be the consequence of a lower rate of bone turnover due to its anti-catabolic effect.To investigate the effect of inhibition of bone remodeling by the bisphosphonate, zoledronic acid, on callus properties in an osteoporotic...
The interdependent relationship between vascular endothelial cells and osteoblasts during bone formation and fracture healing has been long appreciated. This paper reports a heterotopic implant model using FGF-2-expanded bone marrow stromal cells (BMSC) derived from Tie2eGFP (endothelial marker) and pOBCol3.6GFPcyan or topaz (early osteoblast marker) transgenic mice to appreciate the host/donor relationships...
This study was undertaken to determine whether age-related bone loss occurs in intact male F344 rats. Bone loss was assessed in male F344 rats aged 3 to 27 months by scanning different bones using peripheral quantitative computed tomography (pQCT) densitometry. Cancellous and cortical bones were analyzed at the vertebra, proximal tibial metaphysis (PTM), and the neck of the femur. Cortical bone was...
Osteoporosis is a common occurrence in aging men. There is currently no appropriate animal model for studying age-related bone loss in men. To determine whether male Sprague-Dawley (SD) rats experience bone loss with aging and whether this rodent model is appropriate for studying age-related bone loss in men, SD rats aged 1-27 months were examined at the L-4 vertebra, the left femoral neck, and the...
Previous studies have demonstrated that growth hormone (GH) has a marked anabolic effect on cortical bone, and parathyroid hormone (PTH) has been shown to increase cancellous bone markedly and cortical bone to some extent in ovariectomized (ovx) rats. Combined therapies mostly focused on combining a bone anabolic agent with an antiresorptive agent. The following study was carried out to examine the...
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