Bone Abstracts

Introduction: Micro-RNAs (miRNAs) are important post-transcriptional regulators. By binding to complementary RNA strands, they affect mRNA levels and/or mRNA translation. We have previously identified ~90 miRNAs with significant expression levels, with a subset of miRNAs exhibiting interindividual and/or gender differences in expression. In the present project, we have investigated the impact of treatment of parathyroid hormone (PTH) and dexamethasone (DEXA) on global miRNA ex...

Background and aims: Cirrhosis and chronic pancreatitis (CP) are accompanied by inflammation and malnutrition. Both conditions may affect bone metabolism negatively and facilitate bone fractures. The objective of this study was to evaluate the risk of fractures among patients with CP or cirrhosis and the impact of fat malabsorption on fracture risk among patients with CP.Methods: Using the Danish National Patient Register, we did a retrospective cohort s...

Background: Bone marrow edema (BME) is a localised bone lesion. We hypothesize that structural bone alterations increase the susceptibility to BME. Aim of this study was to analyse bone micro structure, bone mineral density (BMD) and serum fasting bone turnover marker (BTM) values in patients with BME.Methods: We compared 14 nonosteoporotic patients (43.7±19.2 years) with atraumatic BME of lower limb to 35 age-matched healthy controls (HC). HR-pQCT ...

Background: Osteogenesis imperfecta (OI) as a rare disease is characterized by reduced bone mass, increased fracture rate, bone deformities and skeletal pain.Currently patients are treated with i.v. bisphosphonates regardless of the underlying mutation.Recently the gene causing OI type VI was described (SERPINF-1, altered RANKL-pathway). This leads to a new understanding of the underlying pathophysiology and offered a new therapeut...

Background: Osteogenesis imperfecta (OI) is a rare disease characterized by increased fracture rate and bone deformities. Patients are classified by phenotype and most are affected by mutations in COL1A1/2.Patients with OI type V present with specific clinical symptoms including hyperplastic callus formation, only mildly decreased height, metaphyseal lines and a calcification of the membrane interossea of the forearm. The disease causing mutation for OI ...

Adiposity, physical inactivity and sedentary behavior have become an increasing problem during the past decade and raise concerns about future health. Increased sedentary behavior may change the body composition by increasing the fat mass (FM) relative to the lean mass (LM). These changes may influence bone health. This study aimed at evaluating the influence of BMI and body fat percent (BF%) and LM on children’s bone health represented by bone mineral content (BMC), bone...

Background: Osteogenesis imperfecta (OI) is a genetic disorder with low bone mass and bone fragility. Type VII OI is one of the autosomal recessive subtypes and clinically moderate to lethal. It is caused by mutations in the cartilage associated protein (CRTAP) gene. Currently <20 mutations are known.Case description: An 11-year-old Iraqi female was referred to our hospital after immigration to Finland. She had suffered numerous peripheral a...

New treatment agents against osteoporosis may not only lead to an improved trabecular structure, but can probably also strengthen the cortex. To assess this treatment effects by means of QCT, one has to deal with significant partial volume effects observing this very thin, but compact structure. A new method for cortical thickness estimation has been developed using an analytical deconvolution approach. After estimating the point-spread-function (PSF) of a scanner/kernel combi...

Osteogenesis imperfecta is a rare disease leading to multiple fractures, skeletal deformities and scoliosis due to a reduced bone mass. Pathological fractures caused by inadequate traumata are the most severe symptom. More than 85% of patients are affected by mutations in COL1A1/A2 impairing quantity and quality of collagen. At present no approved drugs for OI treatment in childhood are available. A single centre prospective pilot study was performed to assess safety and effic...

Objective: Nutritional rickets in Nigerian children is primarily due to dietary calcium deficiency and heals with calcium supplementation. Our aim was to determine the optimal dose of calcium for treatment of children with rickets due to dietary calcium deficiency.Methods: At the Jos University Teaching Hospital, 65 Nigerian children with radiographically-confirmed rickets were randomized to daily supplemental calcium intake of 500 mg (n=21), 10...