Bone Abstracts

There is a growing evidence of the association between HIV infection and fracture risk. Independently of its cause (antiretroviral therapy (ART) or HIV), what remains most important is a prompt diagnosis. Although densitometry is the gold standard, sometimes this technique is not as accurate as necessary in clinical practice. A new validated tool for early and more accurate diagnosis is presented.MethodsIn a HIV group of patients, ...

Purpose: To evaluate whether calcium and vitamin D intake is associated with 25-hydroxyvitamin D (25(OH)D) and parathyroid hormone (PTH) serum concentrations or is associated with either the phalangeal dual energy X-ray absorptiometry (pDXA) or the quantitative bone ultrasound (QUS) at the phalanges and the calcaneus in independent elderly men from southwestern Spain.Methods: Serum PTH and 25(OH)D were measured in 199 healthy elderly men (mean age: 73.31...

Objective: To determine serum 25-lydroxivitamin D (25OHD) and intact parathyroid hormone (PTH) levels in an immobilized population from Northern Spain.Subjects and methods: We studied 125 immobilized people (37 men and 88 women) aged 53–101 years. (85±8 years.). Seventy-five percent of the subjects lived at home, residing in nursing homes the remaining 25%. None of them received antiresorptive therapy, corticosteroids or vitamin D supplements. ...

Multiple factors of risk have been described to the osteoporosis (OSP) and fractures in people infected by human immunodeficiency virus (HIV). Antiretroviral treatment has changed the vital prognosis of these patients, nevertheless seems that antiretroviral treatments can cause a greater loss of bone mineral density (BMD). Experts support the use of densitometry screening for HIV-infected postmenopausal women and men older than 50 years.Objectives: To ev...

Objectives: To assess safety and clinical efficacy during 1–34 parathyroid hormone treatment (1–34-PTH) in real clinical practice; to describe fracture outcome after 1–34-PTH discontinuation in real clinical practice.Methods: We performed an observational study in real clinical practice of all consecutive severe osteoporosis (sOP) patients referred to our Rheumatology Department from Feb’10 until Jan’14. All patients were referre...

Osteoporosis (OP) is characterised by reduced bone mass, due to an insufficient osteoblast-mediated bone formation, unable to replace the bone tissue removed by osteoclasts. Mesenchymal stem cells (MSCs) are multipotent cells capable of differentiating into osteoblasts, adipocytes and chondrocytes. Epigenetic marks like DNA methylation could influence the differentiation potential of these cells into osteoblasts and, consequently, the risk of OP. To explore this hypothesis, we...

The body mass index has been regarded as a risk predictor factor for fractures, and in some prospective cohort studies it has been suggested that obesity could be a protective factor for hip fractures in adults.The present study aimed to investigate whether body mass index is related to the fracture risk when individuals had sideways falls in Mexican patients. We analyzed files from 448 patients, which checked in at Orthopedics and Traumatology Service i...

Alkaline phosphatase activity is critical for the mineralization of the bone matrix. Indeed, inactivating mutations of the ALPL gene, encoding the isoenzyme expressed in bone and liver, may result in the severe abnormalities of bone and other connective tissues that characterize hypophosphatasia. Nevertheless, the clinical spectrum of hypophosphatasia is rather broad and variable between a within families. Thus, along severe infantile forms, there are adult forms with mild man...

Objectives: Achondroplasia, the most common form of short limb dwarfism, is a rare genetic disorder caused by a gain-of-function mutation of the FGFR3 receptor (FGFR3-G380R) and there are currently no effective treatments available. We have developed TA-46, a recombinant human soluble FGFR3(sFGFR3) form of the FGFR3 cell surface receptor containing an extra-cellular ligand-binding domain, including three IgG domains, which confer binding specificity. TA-46 is designed to block...

Multiple myeloma is an incurable neoplastic disorder of plasma cells, which invade the bone marrow, secrete monoclonal immunoglobulins, and induce bone lesions, hypercalcemia, anemia and renal failure. The development of myeloma relies on vicious interactions with the bone microenvironment, a deeper knowledge of which is needed to identify prognostic markers and potential therapeutic targets. To achieve an unbiased, comprehensive assessment of the extracellular milieu of myelo...