Bone Abstracts

Objectives: In the modern society, all individuals are exposed throughout life to a variety of chemicals, which may contribute significantly to the human disease burden. Most of these chemicals are transferred to the fetus in-utero and to the infant via mother’s milk. Until recently, few studies have addressed effects of chemicals on the development of mineralized tissues following exposure during these early stages of life. In this experimental study, we analyse...

Background: Vibration analysis is a well-established technique in industry to analyse materials physical properties. The application to bone’s physical properties is unclear. This study investigated the relationship between bone vibration frequency and mass:volume ratio (ρ).Methods: We used eight turkey bones (tibio tursus). Following soft tissue removal, a 12 cm diaphyseal section was isolated, marrow removed using a water jet and the...

This paper reviews clinical reports of vitamin D deficiency rickets in neonates from 1930 onwards. In 24 reports there was good evidence of maternal deficiency. In some the diagnosis of the rickets led to the identification of symptomatic osteomalacia in the mothers; several had been severe and longstanding. Of the 15 mothers who had assays for serum 25-hydroxyvitamin D (25OHD) 13 had values <25 nmol/l (10 ng/ml) and 10 had values <12.5 nmol/l (5 ng/ml).<p class="a...

Menopause is accompanied by a decrease in bone mineral density which can be caused by a reduction in bone volume and/or degree of bone matrix mineralization. Both of them are suggested to contribute to the increased fracture risk in postmenopausal individuals. In the present work, we aimed for information whether a drop in bone matrix mineralization is occurring in the perimenopausal stage of women. For this purpose, we measured the bone mineralization density distribution (BM...

Postmenopausal women with forearm fracture have higher cortical porosity and lower trabecular density perhaps due to excessive age-related bone loss1. Remodelling becomes unbalanced and rapid only after ~45 years of age. We therefore proposed that bone fragility in premenopausal women with a forearm fracture originates during growth. At metaphyses, trabeculae emerging from the periphery of the growth plate form cortex by ‘corticalization’)2. We ...

Alterations in fetal nutrition result in developmental adaptations that permanently alter the structure, physiology and metabolism of the offspring. β-hydroxy-β-methylbutyrate (HMB) is the bioactive metabolite of leucine responsible for inhibiting proteolysis and for modulating protein turnover in vitro and in vivo.The aim of the study was to determine the effect of maternal administration with HMB on mineralization, geometry ...

Sarcopenia and osteoporosis are common in later life, often coexist, and increase the risk of adverse health outcomes such as disability, falls and fracture. Binkley and colleagues recently devised a score-based system for the diagnosis of ‘dysmobility syndrome’ in an attempt to combine adverse musculoskeletal phenotypes and indentify older individuals at particular risk. We applied these criteria to a larger cohort of participants from the Hertfordshire Cohort Study...

Introduction: Teriparatide is a potent anabolic drug that has demonstrated efficacy on fracture risk reduction in women with severe postmenopausal osteoporosis. Denosumab, designed to inhibit RANKL (RANK ligand), is a fully human MAB for the treatment of osteoporosis. BMD changes, measured by DXA, is an established tool for monitoring the effects of anti-osteoporotic therapy. Our purpose is to compare teriparatide vs denosumab efficacy on hip BMD variations, in postmenopausal ...

Objectives: High resolution peripheral quantitative computed tomography (HR-pQCT) was used to evaluate bone quality and volumetric bone mineral density (vBMD). However, manufacturers only provide a standard protocol for adult but not for growing subjects. The aim of this study was to investigate the difference on measurement between two different HR-pQCT scanning protocols in adolescence with unfused growth plate.Methods: 27 boys and 26 girls aged 13&#15...

Osteogenesis imperfecta (OI) is a heterogeneous group of inherited disorders of bone formation, resulting in low bone mass and an increased propensity to fracture. Over 90% of patients with OI have a mutation in COL1A1/COL1A2, which shows an autosomal dominant pattern of inheritance. Several other genes are associated with the autosomal recessive forms of OI. In-depth phenotyping and in particular, studies involving manifestations in the skin connective tissu...