Bone Abstracts

Odanacatib (ODN), a selective and reversible cathepsin K inhibitor was shown to histomorphometrically reduce trabecular (Tb) and intracortical (Ic) bone remodeling while preserving endocortical (Ec) and stimulating periosteal (Ps) bone formation (BF) in monkeys. Here, we investigate the bone site specific mechanism of ODN on bone modeling (Mo) versus remodeling (Re)-based osteons. Rhesus monkeys (13–19 yrs, n=8–11/group) were ovariectomized and treated with ...

Type 2 diabetes mellitus impairs bone quality and increases fracture risk. We showed that diabetic ZDF rats have low bone mass due to impaired osteoblastogenesis, which can be partially reversed with an intermittent parathyroid hormone 1–84 (PTH) therapy. It remains unclear, why PTH treatment does not fully restore osteoblast (OB) function in diabetic conditions. Here, we tested if high glucose (HG) conditions lead to a partial PTH resistance in osteoblasts. Pre-osteoblas...

Introduction: Benign osteopetrosis type 2 (OPTA2) (Albers-Schönberg disease) is usually associated with a heterozygous mutation in CLCN7. Patients may be asymptomatic and present following an x-ray taken for other reasons or with a low trauma fracture. There may be a family history. Homozygous mutations in CLCN7 usually result in severe disease which presents in the neonatal period or early infancy. We present a case of benign osteopetrosis associated wi...

Objectives: The aim of this study was to assess the impact of age, sex, location of injury, physical activity, dietary intake of calcium and vitamin D on injury outcome in otherwise healthy children.Materials: This study was a cross-sectional prospective study. Children aged 6 to 15 years who presented to the Emergency Department of a single tertiary paediatric referral hospital were recruited. Children were included it they were known not to have underl...

Poor bone mineralization remains a major health problem in patients with Thal and has been linked to functional zinc deficiency despite adequate dietary intake. The global etiology of poor bone mineralization includes inadequate dietary intake of calcium and vitamin D, endocrinopathies leading to disturbed calcium homeostasis, dysregulation of the GH–IGF1 axis, and delayed puberty, all resulting in limited growth, decreased bone formation and increased bone resorption. Th...

Background: Osteogenesis imperfecta (OI) type VI is a rare recessive disease that may present with long bone fractures in early childhood. Bone in this condition is particularly brittle; the resulting pattern of long bone fractures and lack of distinct radiographic findings can make the diagnosis less obvious than in other types of OI. We report 2 unrelated children who presented with long bone fractures and were suspected of having suffered physical abuse with removal of pare...

Background: There are currently 456 rare bone disease recorded within 40 groups. Within many of these diagnoses there is marked heterogeneity of severity and complications that is often not explained by current understanding of disease mechanisms. There is an urgent need to improve the care of these patients by developing novel diagnostic tests and therapies based on understanding sub-phenotypes within existing diagnostic groups.Aim: To develop a nationa...

Objectives: Bone, muscle and fat share common mesenchymal origins yet current methods separately examine lean, fat and/or bone content. We hypothesized specific musculoskeletal phenotypes derived from relative contributions of each tissue.Methods: Design: We obtained information from the 6-year follow-up of mother–offspring pairs within the Southampton Women’s Survey, a prospective population-based cohort study of 12 583 initially non-pregnant ...

Background: Low vitamin D concentrations among children and adolescents at northern latitudes are frequently observed. Also, inverse associations between 25-hydroxyvitamin D (25(OH)D) and PTH concentrations have been found in children of different ages. More studies on the link between vitamin D status and childhood bone health are needed.Objective: To evaluate the status of serum 25(OH)D in autumn and the association between 25(OH)D concentrations and b...

Objective: Evidence for further reduction of nonvertebral fracture (NVFX) beyond 3 years of antiresorptive therapy is limited. Since long-term denosumab (DMAb) treatment is associated with continuous increases in BMD and sustained fracture reduction, we analyzed the influence of femoral neck (FN) BMD after 3 years on NVFX rates.Methods: Long-term subjects received 7 continuous years of DMAb; cross-over subjects received 3 years of placebo (FREEDOM) and 4...