Active clinical trials for "Osteoporosis"

SUMMARY TITLE: "Efficacy of Cone Beam Computed Tomography derived radiomorphometric indices in screening of postmenopausal females for osteoporosis." RATIONALE: Osteoporosis is a disease of altered bone architecture affecting primarily elderly and middle-aged women and men, particularly post-menopausal women. It is responsible for a high number of fractures and poses a high financial burden in both developed and developing countries. In India, we are in a situation where an important, high- burden disease-osteoporosis is being neglected due to lack of facilities of detection, and unawareness about the other tools of assessing bone mineral density and fracture risk. Few researchers have explored the use of radiomorphometric indices of Cone Beam Computed Tomography (CBCT) and have concluded that these can be used to differentiate between osteoporotic and non-osteoporotic patients. Increasing use of CBCT for various dental conditions, especially implant planning in older age group of patients, which is prone to osteoporosis, calls for the need for further exploration in this regard. The studies available in the literature are heterogenous in nature and reproducibility of the indices used has not been measured. Also, the sample size in each study was limited alongwith presence of selection bias. Thus, the present study will aim at assessing the efficacy of these indices in CBCT in an Indian population, the studies of which are sparse in literature, which shall aid in timely detection and therefore timely intervention to increase the quality of life and reduce morbidity and mortality occurring as a consequence of this disease. RESEARCH QUESTION: P: Population (Postmenopausal females with Osteoporosis i.e. DXA values below -2.5) I: Intervention (none) C: Control (Non-osteoporotic post-menopausal females) O: Outcome (CTCI, CTMI, CTI(S)and CTI(I) scores) T: Time Frame (1 year) S: Study Design (Cross sectional observational study) Setting in Haryana, India Are radiomorphometric indices of CBCT useful for detecting the presence of postmenopausal osteoporosis?

The mechanism of bone loss in anorexia nervosa is complex. Marrow adipose tissue seems to play a role in the regulation of bone metabolism. Adipocytes secrete cytokines and adipokines that either stimulate or inhibit adjacent osteoblasts. This study consist to explore the relationship in anorexia nervosa patients with change in bone mineral density and adipokines like leptin, adiponectin and Préf-1 Bone mineral densities will be measure in 180 anorexia nervosa patients at inclusion and every two years during 6 years.It is assessed blood and urinary calcium and phosphate levels, bone remodelling markers and adipokines (leptin, adiponectin and Préf-1)

This study is aimed to evaluate the roles of specific miRNAs in osteoporosis in men.

Osteoporosis is a systemic bone disease characterized by low bone mass and microarchitectural deterioration of bone tissue with consequent bone fragility and susceptibility to fracture. Fifty percent of women and 20% men older than 50 y.o. will have an osteoporotic fracture (fragility fracture). Fragility fracture is defined as one that results from a low-energy trauma such as a fall from body height. A previous fracture is an important predictor of a new fracture, especially in the first 5 years after initial fracture. A second fracture can be particularly devastating if it is a hip fracture. Low bone mineral density, measured by bone densitometry, as well as a previous osteoporotic fracture, are the two major risk factors for the occurrence of a new fracture. A more rational approach currently used to minimize the costs of health care in a shorter period of time uses the strategy of firstly preventing the occurrence of secondary fracture, followed by primary prevention strategies. In this context, correct identification of fragility fractures and consequent treatment of those individuals is imperative. There are currently insufficient data about the epidemiology and evolution of other fragility fractures, also known as non-vertebral non-hip fracture (NVNH). Among these, distal radius fracture and proximal humerus fractures are the most frequent. There is a type of fracture, however, that is simply ignored by the medical community: the knee insufficiency fracture.A possible explanation for this information gap could be the fact that, until a few years ago, this entity was believed to be a osteonecrosis of the knee. Only recently it is becoming clear that the cause of pain and marrow bone edema that occur subtly in older individuals is, in fact, a insufficiency fracture. The perception that this lesion is actually a fracture is relatively new. The knee insufficiency fracture usually occurs in older individuals and those with knee osteoarthritis. This study therefore aims to evaluate whether there is a relation between knee insufficiency fracture and osteoporosis. Moreover, it is expected to find out if this fracture may be defined as a fragility fracture, electing the individuals affected by it to a prophylaxis for the occurrence of new osteoporotic fracture.

Some possible humoural and cellular mechanism for diabetes related osteoporosis/fractures were proposed and summarzied as the following, (1)Diabetes mellitus increases osteoclast function but decreases osteoblast function, thereby leading to accelerated bone loss, osteopenia and osteoporosis. (2)DM/hyperglycemia induces production of macrophage colony stimulating factor (MCSF), tumor necrosis factor (TNF)-α and receptor activator of nuclear factor-κB ligand (RANKL), all of which are osteoblast-derived activators of osteoclast proliferation and differentiation. (3) DM/hyperglycemia suppresses osteoblast proliferation and function, in part, by decreasing runtrelated transcription factor (Runx)-2, osteocalcin and osteopontin expressions. (4)Adipogenic differentiation of mesenchymal stem cells is increased as indicated by the overexpression of adipocyte differentiation markers, including peroxisome proliferator-activated receptor (PPAR)-g, adipocyte fatty acid binding protein (aP2), adipsin and resistin. A decrease in neovascularization may further aggravate bone loss. (5)Bone quality is also reduced as a result of advanced glycation end products (AGE) production, which may eventually result in low impact or fragility fractures. DM are associated osteoporosis/fracture. The underlying mechanism, especially of type 2 DM, mandates a DM-osteoporosis cohort to elucidate. In clinical practice, to developed preventive strategies from osteoporotic-fracture is also necessary.

In this study, the investigators would like to analyze the bone mineral density (BMD) , bone turnover makers, and fracture prevention effects of denosumab in Japanese patients under clinical practice. The participants are treated in the investigators hospital, who are under severe osteoporotic condition. The main objective of this study is to investigate effects of denosumab. The researchers also investigate the effects of Effects of previous osteoporotic therapy to denosumab treatment. In this study, the investigators analyse the determinants of subsequent BMD increase and fracture preventing effect by teriparatide.

The purpose of this study is to determine if prevention of further fractures is possible through systematic evaluation for osteoporosis in patients with recent hip fracture

This pilot project aims to 1) estimate the prevalence of osteoporosis in adults having undergone liver transplantation in childhood, and 2) identify risk factors for osteoporosis in this group. We aim to study 40 individuals.

The study tries to reveal if aminobisphosphonates influence aside the bone density also the vascular status in the typical elderly patient population

Fifty patients awaiting liver transplantation and 50 age and gender matched control subjects with normal liver function will be included in the study. The aim of this project is to compare liver transplantation recipients'bone microarchitecture with healthy controls and to evaluate patients' changes within one year after transplantation