Bone Abstracts

Osteoporosis is a common disorder with a partly genetic pathogenesis. Interaction between RANKL and its receptor RANK is essential in bone remodeling.We therefore investigated the effect of polymorphisms in the RANK and RANKL genes and interaction between the effects on bone mineral density (BMD) and vertebral fractures.The study was a case-control study with 462 osteoporotic patients and 336 controls. Ten polymor...

Osteogenesis imperfecta (OI) is a hereditary disease with a generalized involvement of the connective tissue caused by collagen type 1 mutations. The clinical appearance is broad with fractures as the key symptom. Only few genotype–phenotype correlations have been established. We aim to characterize the Danish OI population thoroughly including DXA and HRpQCT, anthropometry, patient history, and genetic background.This cross-sectional study includes...

There has been much published about the incidence, detection and prosecution of publication fraud, less about fraud and misconduct in clinical research. We should be equally concerned about research fraud. It is clear that all misconduct is not fraud, and sloppiness would not be so labelled, but the protection of patients must be uppermost of all concerns.Whichever definition is used, the fact that patients have been exploited remains. This exploitation ...

Osteoporotic fractures are a major worldwide epidemic. Worldwide, age-standardized rates in hip fracture vary >200-fold in women and >140-fold in men when comparing incidence rates in the highest vs lowest country. Median age standardized rates are highest in North America and Europe followed by Asia, Middle East, Oceania, Latin America, and Africa. Globally rates of hip fracture are greater in women than men with an average ratio of ~2:1. In all populations studied to...

Currently menopausal hormone treatment (HT) is not recommended for the prevention of chronic disease. This recommendation is based on reputable science relying largely on the Women’s Health Initiative (WHI), a large methodologically sound, long-term, randomized clinical trial (RCT) of 27 347 women age 50–79 years. A RCT is considered level two evidence in the hierarchy of evidence only below a systematic review of several RCTs. The WHI HT trials were designed to dete...

PTH replacement therapy in hypoparathyroidism (hypoPT) has become more accepted after proving successful in several clinical studies. Intact PTH (PTH1–84) was in 2012 withdrawn, leaving teriparatide (PTH1–34) the only therapeutic option available.All patients with postoperative HypoPT who changed medication from PTH1–84 (100 μg) to PTH1–34 (20 μg), after at least 12 months of conve...

Differentiation of osteoclast progenitor cells into mononucleated TRAcP+ pre-osteoclasts occurs in the bone marrow. But how are these cells dispatched to the future bone resorption sites? We hypothesized that the collagen type III/I-rich reticulin network of the bone marrow might provide a structural framework for localization and migration of differentiating pre-osteoclasts towards the bone surface. Therefore, adjacent sections from decalcified paraffin-embedded iliac crest b...

Objective: To investigate i) the analytic stability of PTH in venous blood specimens in serum tubes processed at different time intervals after collection compared to immediately processed blood samples collected in K2EDTA tubes, and ii) whether storage of samples in serum tubes for 5 years at −20 °C had an effect on stability of PTH.Methods: Venous blood samples were collected from ten healthy Caucasian females. One K2EDTA tube and three seru...

Introduction: The purpose of this study was to evaluate whether daily treatment with 400 IU vitamin D3 was sufficient to maintain 25-hydroxyvitamin D (25(OH)D) concentrations above 60 nmol/l over a 3-year period. In addition, the study aimed to clarify if any differences existed in serum 25(OH)D between pre-supplemented women and women who already had serum 25(OH)D above 60 nmol/l at screening.Methods: Serum samples drawn from 251 postmenopaus...

Background: Anorexia nervosa (AN) presenting in childhood can have devastating implications for growth, puberty, menstruation and bone health. It may lead to altered bone structure and inadequate acquisition of bone mass with increased risk of fracture.Objective: To describe growth, pubertal and bone mineral density data in a cohort of adolescents with AN managed in a tertiary metabolic bone service.Methods: 62 adolescent females w...