Bone Abstracts

Introduction: The prospective, single-arm, open-label ZOTECT study was designed to assess the effect of zoledronic acid (ZOL) on bone-marker levels and potential correlations with disease outcomes in bisphosphonate-naive patients with bone metastases.Methods: Patients with bone metastases from prostate cancer (PC; n=301) or breast cancer (BC; n=99) who have not received bisphosphonates for ≥6 months were enrolled at 98 sites in Ge...

Spinal cord injury (SCI) has been associated with a marked increase in bone loss. This study analysed the effect of Wnt signalling antagonists (sclerostin and DKK-1) and their relationship with bone turnover markers and BMD evolution in patients with a recent SCI.Methods: Patients with a recent complete motor SCI (AIS A or B); (<6 months) were prospectively included. Bone turnover markers (bone formation: P1NP, bone AP; bone resorption: sCTx), Wnt an...

Juvenile Paget’s disease (JPD) is an extremely rare, yet painful and debilitating bone disease with onset occurring during early childhood. JPD can be caused by loss of function of osteoprotegerin, resulting in subsequent osteoclast stimulation via the activated receptor activator of nuclear factor-kappa B (RANK) pathway. Increased bone turnover and a lack of bone modelling lead to severe deformities, frequent fractures, short stature and loss of hearing.<p class="abs...

Objectives: Denosumab (Dmab) is a monoclonal antibody targeting RANKL administered by sub-cutaneous injection. Given its convenient mode of administration, our goal was to assess the safety and efficacy of Dmab compared to intravenous zoledronic acid (ZA) in pediatric osteoporosis.Methods: In this one-year pilot study (NCT02632916), children 4–16 years with low-trauma fractures due to osteoporosis were randomized 1:1 to receive ZA 0.025 mg/kg or Dma...

Objectives: Denosumab (Dmab) is a monoclonal antibody targeting RANKL administered by sub-cutaneous injection. Recent reports have raised concern about the ‘rebound phenomenon’ (hypercalcemia and increases in bone turnover markers, BTM) following Dmab in adults, and during treatment in children with osteogenesis imperfecta. The purpose of this report was to explore this phenomenon in children with osteoporosis associated with lower bone turnover.<p class="abstext...

Vertebral fractures are one of the most common and disabling manifestation in osteoporosis. The relationship between bone mass and muscle strength has already been shown in the literature, but only a few studies argues the relationship between BMD and erector spinae muscles. Simple biomechanical considerations suggest that the loss of trunk muscle mass may contribute in vertebral fractures. In the literature, the Soerensen and isokinetic tests are often reported for t...

Introduction: The creatine kinase (CK) is a dimeric enzyme, involved in energetical metabolism. It is present in many tissues, but higher concentration in skeletal and cardiac muscle.Therefore, conditions that involve muscle tissue may increase this serum enzyme. Such enzyme elevation is usually observed in inflammatory myopathies and others autoimmune diseases.Sometimes some elevation in CK is not fully understood out off these co...

Biographical DetailsDr Brendan Lee is the Robert and Janice McNair Endowed Chair in Molecular and Human Genetics, Professor and Interim Chairman of the Department of Molecular and Human Genetics at Baylor College of Medicine. Dr B Lee co-directs the joint MD Anderson Cancer Center and Baylor College of Medicine Rolanette and Berdon Lawrence Bone Disease Program of Texas, and the Baylor Co...

Introduction: Normal mechanical loading potently induces bone formation via effects on osteocytes. Current investigations of mechanical loading of bone do not reflect the interactions of the cells within it, mostly focusing on mechanical loading of osteoblasts in monolayers. Existing 3D models do not elucidate the osteoblast-osteocyte interactions that regulate mechanically-induced bone formation. We developed a novel in vitro 3D co-culture model of bone1 t...

Vitamin D (vit D) plays an important role in the regulation of mineral homeostasis. Vit D insufficiency leads to decreased calcium and phosphorous intestinal absorption, parathyroid glands (PG) stimulation with consequent development of secondary hyperparathyroidism (HPT) and bone mineralization defect. We present a clinical case of a patient with tertiary HPT as a consequence of severe vit D deficiency.A clinical case: A woman 59 years old considered he...