Bone Abstracts

Background: We have previously shown that MLO-Y4 osteocytes express a number of P2 receptors, respond to a broad range of nucleotides (e.g. UTP) by increasing intracellular calcium concentration and release ATP upon both mechanical and UTP stimulation. The aim of this study therefore is to investigate how the osteocytes release ATP and whether there is a difference in release pathway depending on the type of stimulus.Methods: ATP release was investigated...

Experimental studies suggested that both, oxidative stress and the Wnt pathway, are important factors in the regulation of bone remodeling. Thus, low antioxidant levels and elevated markers of Wnt pathway inhibitors (sclerostin) levels are associated with a reduced bone mineral density and increased risk of osteoporotic fracture. Whether oxidative stress and the Wnt pathway are related to fracture risk is poorly understood.M&M: Cross-sectional study ...

Background: Cancer is one of the leading causes of death worldwide. Natural products have been regarded as important sources of potential chemotherapeutic agents. In this study, we evaluated the antiproliferative activity of oleuropein, an olive oil compound traditionally found in the Mediterranean diet.Design and Methods: The antiproliferative activity on two human osteosarcoma cell lines (MG-63 and Saos2) was evaluated in vitro using the MTT c...

Background: The baby growing in its mother’s womb needs calcium for skeletal development. Maternal osteoporosis has been attributed to pregnancy in some cases.Presenting problem: A 27-year-old woman in the 7th month of her first pregnancy complained of mid-thoracic back pain after lifting a non-heavy object. The pain remained with differing intensity and was attributed to her pregnancy. After the delivery of a healthy child, the back pain prevented ...

Objectives: Adolescent idiopathic scoliosis (AIS) is a complex three-dimensional spinal deformity associated with low bone mass. Our previous clinical trial demonstrated the anabolic bone effect of vibration treatment (VT) at the femoral neck in AIS subjects. The therapeutic effect was more pronounced in those with optimal serum 25(OH) Vit-D level (>40 nmol/l). To investigate possible factor interaction between Vit-D and VT on their anabolic bone effects, this in-vitro...

The childhood obesity is a global epidemic. Some studies with pre-pubertal children reported a positive relationship between fat mass and bone. However, there are no available data on the influence of the nutritional status on parameters of quantitative ultrasound (QUS). The aim of this study was to evaluate the influence of nutritional status in bone mass assessed by QUS of proximal phalanges in girls. The bone mass parameter, amplitude dependent speed sound (AD-SoS) in meter...

Background: Congenital tibial pseudarthrosis (CTP) presents with anterolateral bowing of the lower leg in infancy, which often progresses to fracture and non-union (pseudarthrosis). CTP occurs in 2–3% of children with NF1. The distal end of the fibula and other long bones can also be affected.Objective: We describe three children in whom NF1 related congenital tibial or fibular pseudarthrosis was initially misdiagnosed as NAI....

The objective of this study was to analyze measurement properties of BeamMed Omnisense quantitative ultrasound (QUS) of the radial and tibial speed of sound (SoS) for assessing bone health and screening bone fragility in youth. Bone fragility was defined as low whole body less head bone mineral density (WBLH BMD) measured by DXA (first tertile, 95% CI: −1.1– (−0.9)) and as past history of fractures evaluated by questionnaire. The study was conducted with 319 n...

Objective: Evaluate the clinical characteristics of all Latin American pediatric patients with Gaucher disease type 1 (GD1) enrolled in the ICGG Gaucher Registry at baseline and investigate long-term outcomes and clinical benefit of prolonged imiglucerase/alglucerase therapy in patients with manifestations of GD1 at baseline.Methods: All Latin American patients with GD1 in the ICGG Gaucher Registry (NCT00358943) who were <18 years of age at the start...

DMAb increases BMD and reduces bone resorption and risk of vertebral, nonvertebral and hip fractures in women with PMO. Transiliac crest bone biopsies in 47 subjects treated with DMAb for 1–3 years showed reduced bone turnover vs 45 Pbo-treated subjects, which reversed on treatment cessation. Since bone turnover reduction is sustained and fracture incidence low over 6 years’ DMAb treatment, we evaluated DMAb’s effects on tissue-level remodelling in the FREEDOM E...