Bone Abstracts

Duchenne muscular dystrophy (DMD) is associated with an increased risk of bone fragility due to the adverse effects of prolonged glucocorticoid therapy and progressive muscle weakness on bone strength. The resultant osteoporosis, which predisposes to fragility fractures of both long bones and vertebrae, is a major cause for concern. We studied 70 boys with DMD mean age 10.74±3.83 years. Bone mineral density was measured by DXA scan on lumbar spine and total body and conte...

Introduction: The importance of vitamin D in metabolism, bone growth and functioning of many organs and systems (the plejotropic effect) has been broadly discussed in the literature recently. The systemic deficiency of vitamin D connected with the lower sunlight exposure and the decreased diet supply favours to bone mineral density lowering and the bone structure disorganization. More and more often the common vitamin deficiency in children and adolescents has been observed. I...

Silk fibroin (SF) sponges are a promising scaffold material for tissue engineering due to their biocompatibility, mechanical properties, and ability to support calcium-phosphate formation in vitro. However, previous studies have shown that SF can mineralize spontaneously in the presence of culture media, which has a detrimental effect on experimental integrity when analyzing how cells deposit bone-like tissue in tissue engineering studies. In this study we analyzed th...

IGF1 is an osteo-anabolic factor that stimulates osteogenic precursor cell differentiation. IGF1 is produced in bone in response to mechanical stimulation, but also in mechanically-stimulated muscle cells. IGF1 enhances the rate of mRNA translation in muscle cells via activation of the PI3K/AKT/mTOR pathway, thereby increasing in muscle mass. Therefore we hypothesized that IGF1 not just enhances osteogenic differentiation of precursors, but also stimulates protein syn...