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PTH regulates osteoblastic function by activating PTH/PTHrP receptors (PTH1Rs), which trigger several signaling pathways in parallel, including cAMP/protein kinase A (PKA) and, via both phospholipase-C (PLC)-dependent and PLC-independent mechanisms, protein kinase C (PKC). These signaling functions have been mapped to distinct domains within PTH(1–34), but their roles in mediating the anabolic effect...
Vascular endothelial growth factor (VEGF) is an important regulator for angiogenesis and endochondral bone formation. Although low-intensity pulsed ultrasound (US) has been recently used for accelerating fracture healing, the effect of US stimulation on angiogenic factor production by osteoblasts remains undetermined. Here, we found that US elevation of VEGF-A expression in human osteoblasts to be...
Extracorporeal shock waves (ESW) have recently been used in bone repair. Extracellular signal-regulated kinase (ERK) and p38 kinase are found to act as important mediators for osteogenic factor and mechanical-stimulated proliferation and differentiation of bone-forming cells. A previous study reported that ESW promoted healing of segmental defects in rats by inducing bone morophogenetic proteins (Bone...
Shock wave treatment is believed to improve bone healing after fracture. The purpose of this study was to evaluate the effect of shock wave treatment on bone mass and bone strength after fracture of the femur in a rabbit model. A standardized closed fracture of the right femur was created with a three-point bending method in 24 New Zealand white rabbits. Animals were randomly divided into three groups:...
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