View clinical trials related to Bone Diseases.
Filter by:Thus, the aim of the current study is to assess the influence of vitamin D deficiency and, consequently, of serum calcium deficiency in the body composition, muscular activity, bone mineral density, fatigue, and exercise tolerance of CD patients. Secondly, it also aims to determine the impact of vitamin D supplementation on this population.
The regulation of calcium, phosphate and parathyroid hormone in hemodialysis is complex and each parameter is not independently regulated. Simultaneous modification in these three parameters are the result of abnormal mineral metabolism and the treatment used. The specific objective of this work is an accurate and exhaustive analysis and description of the complex relationships between clinically relevant parameters in chronic kidney disease metabolism bone disease. In order to achieve these objectives we have used a machine learning approach Random Forest able to extract useful knowledge from a large database. The analysis of the complex interactions between the different parameters needs an advance mathematical approach such as Random Forest . The second aim of this study is to determine whether calcium, phosphate and parathyroid hormone, Fibroblast growth factor 23 and calcitriol are long-term associated with demographic features, mortality, co-morbidity and the therapy prescribed. We will analyze in a prospective study on incident patients, whether the use of this new model may predict the cardiovascular risk..
Treatment of bone and joint infections remains difficult and variable according to centres and countries. Clindamycin given intravenously and followed by an oral route is recommended for the treatment of staphylococcal, streptococcal and anaerobes bone and joint infections by the French Society for Infectious Diseases. For staphylococcal bone and implant infections, rifampin is a major drug, as it remains active in bacterial biofilm and on quiescent staphylococci. For that reasons, clindamycin-rifampin combination therapy is frequently used in these infections.Clindamycin is metabolized by the P450 3A4 cytochrome, an enzyme strongly inducible by rifampin. A retrospective study published in 2010 on 70 patients treated for bone and joint infections showed that clindamycin serum concentrations were significantly lower when clindamycin was combined with rifampin (5.3 mg/liter vs 8.9 mg/liter; p<0.02). This drug interaction could even be stronger with the oral route, because of hepatic first-past effect, ending up with very low clindamycin serum concentration, a risk of selecting resistant microorganisms and treatment failure. This latter point is an important issue, because clindamycin has an excellent oral bioavailability and is frequently used in oral regimens. In the above study, a wide variability of clindamycin serum concentration was observed in the group of patients treated with combination therapy (1-12mg/l) suggesting interindividual variability. Rifampin induction of CYP 450 3A4/A5 depends on different receptor (PXR, RXR, LXRalpha) submitted to genetic polymorphism. Hypothesis: Plasma clearance of clindamycin (CLclin) combined with rifampicin (CLclinrif) is higher when clindamycin is administered by the oral route (CLclinrif OR) compared with IV administration (CLclinrif IV).
The Greulich and Pyle technique (G&P) is that most commonly used to assess bone age in children, particularly in the context of suspected skeletal dysplasia. However it has been shown not to be applicable to children of Asian and African ethnicity and may not be applicable to United Kingdom (UK) Caucasian children, who are now relatively more mature and larger than children of the mid 1930's (when G&P was developed). It is generally agreed that updated standards are required for rapid and reliable bone age assessment. The development of such standards requires irradiation of normal children. To do this ethically, radiation exposure must be kept as low as possible. Two recent studies suggest that bone age assessment can be reliably achieved from dual-energy x-ray absorptiometry (DXA) scans. As far as the investigators are aware, the Tanner & Whitehouse (TW3) method, which is preferred by some (e.g. endocrinologists and nutritionists), has not been assessed from dual-energy x-ray absorptiometry (DXA) scans - although not the main focus of this study, because of its popularity amongst certain specialties, the investigators shall be assessing the TW3 method also. Modern techniques should not only be available as textbooks, but should also be available in digital (on-line) format and where possible integrated with hospital PACS systems. The investigators believe that their team has the required experience and expertise to successfully carry out such a project. Before conducting the required large cross-sectional study, the investigators must first confirm that DXA can in fact replace radiographs for bone age assessment in children; which is the objective of this current study.
CPC REGISTRY is a multi-center, international, prospective, open-label, observational study on the use of injectable calcium phosphate cements for the treatment of bone defects in adults. All patients will be treated with any of the two injectable calcium phosphate bone substitutes (GRAFTYS®HBS/GRAFTYS®Quickset or their private labels) according to standard clinical practice and according to the information provided by GRAFTYS manufacturer in respective device Instructions For Use (IFU).
This study will evaluate the efficacy, safety, and effect on quality of life of oral ibandronate (Bondronat) in participants with breast cancer and metastatic bone disease. The anticipated time on study treatment is 25 weeks, and the target sample size is 50 individuals.
This study will assess the efficacy and safety of ibandronate (Bondronat), administered intravenously (IV) or orally (PO), in participants with malignant bone disease and moderate to severe pain. Participants will be randomized to receive ibandronate either as a 6-mg IV infusion every 3 to 4 weeks or a 50-mg tablet PO daily. Pain response and Karnofsky Performance Index (KPI) will be measured at intervals throughout the study. The anticipated time on study treatment is 4 months and the target sample size is 150 individuals.
SENIOR transplant Registry European transplant registry of senior renal transplant recipients (above the age of 65 years) receiving initial immunosuppression with tacrolimus once daily, mycophenolate and steroids to investigate long term outcomes on an observational basis.
Bone and mineral disease is a key problem in patients with kidney disease. The available clinical parameters are non-specific, unproven for the assessment of the bone metabolism and do not reflect the complexity and diversity of the underlying bone pathology. The aim of this study is to use bone histology, novel bone markers and bone imaging results to establish a reliable decision model (diagnostic tool) that can be used to guide the individual therapy.
Calcium and vitamin D substitution has for a long time been used to improve osteoporosis.The main storage place for magnesium is in the bone. Magnesium is direct under calcium in the periodic system making it possible to interact with the crystal structure. Some small studies have shown beneficial effects of magnesium substitution on osteoporosis. Evidence has shown improvement with calcium, alcohol, fruit and vegetable nutrients on bone loss. It has been uncertain however, which of these factors can contribute to such a change. The effect of magnesium substitution 240 mg daily as therefore studied in two parallel groups where both received calcium carbonate 1000 mg/day and cholecalciferol 10 ug/day, one got placebo and the other received magnesium. This was studied on various expressions for bone metabolism after zero, seven and 28 days in elderly females aged 70 years old.