Active clinical trials for "Osteoporosis, Postmenopausal"

Osteoporosis is a disease characterized by low bone mass and structural deterioration of bone tissue leading to bone fragility (i.e., weakness) and an increased risk for fracture. Bone strength is a critical factor in a bone's ability to resist fracture and is clearly an important outcome in studies of osteoporosis. The current standard for assessing bone health and diagnosing osteoporosis is to use dual-energy x-ray absorptiometry (DXA) to quantify the areal bone mineral density (BMD), typically at the hip and spine. However, DXA-derived BMD has limited discriminatory accuracy for distinguishing individuals that experience fragility fracture from those who do not. One well known limitation of DXA-derived BMD is that it does not adequately assay bone strength. There is a critical unmet need to identify persons more accurately with diminished bone strength who are at high risk of experiencing a fragility fracture in order to determine an appropriate therapy. A potential new diagnostic approach to assess skeletal health and improve osteoporosis diagnosis is the use of Cortical Bone Mechanics Technology (CBMT). CBMT leverages multifrequency vibration analysis to conduct a noninvasive, dynamic 3-point bending test that makes direct, mechanical measurements of ulnar cortical bone. Data indicates that CBMT-derived ulnar flexural rigidity accurately estimates ulnar whole bone strength and provides information about cortical bone that is unique and independent of DXA-derived BMD. However, the clinical utility of CBMT-derived flexural rigidity has not yet been demonstrated. The investigators have designed a clinical study to assess the accuracy of CBMT-derived ulnar flexural rigidity in discriminating post-menopausal women who have suffered a fragility fracture from those who have not. These data will be compared to DXA-derived peripheral and central measures of BMD obtained from the same subjects.

To evaluate the effect of 1 year of risedronate treatment on the prevention of bone loss after denosumab discontinuation in denosumab-treated post-menopausal osteoporosis for a year

This study aimed to compare teriparatide treatments and PVPs, focusing on its effects on life qualities and effect/coast ratio and evaluate which method is better for patients.

The goal of this study is to: 1. Analyze the expression levels of circulating (serum) miRNAs in primary hyperparathyroidism patients with and without osteoporosis, and patients with osteoporosis undergoing thyroidectomy, and to correlate with clinical markers of bone remodeling including biochemical and radiologic studies. 2. To evaluate serum miRNA levels after treatment with parathyroidectomy.

Discontinuation of denosumab results in a rebound response of bone turnover markers, which rise above baseline at 3 months and remain elevated until reaching again baseline levels approximately 30 months after the last dose. Bone mineral density (BMD) gains are also lost and BMD values reach original baseline values after 1-2 years off-treatment.For the above reasons, current literature recommends that patients who discontinue denosumab should continue to receive either intravenous (iv) or oral (peros) bisphosphonate therapy for some time. The study aims to investigate changes in the BMD of the lumbar spine 12 months after transitioning from denosumab to oral alendronate 70 mg in a weekly effervescent tablet formulation

The purpose of the event-driven base study is to determine the safety and efficacy, especially fracture risk reduction, of odanacatib in postmenopausal women diagnosed with osteoporosis. In a placebo-controlled extension of the base study, participants continued to receive the same blinded study medication for a total of up to 5 years of blinded study medication combined between the base study and the extension. After participants received 5 years of blinded study medication, they received open-label odanacatib through the end of the first extension. Participants were then invited to enroll in a second extension study in which they received open-label odanacatib for an additional 5 years. Two imaging substudies (PN032-Base/Extension and PN035) were conducted for participants in the MK-0822-018 Study. Additional safety information was collected for participants who discontinued from the base study or the blinded first extension in an observational follow-up study, MK-0822-083 (EudraCT number: 2007-002693-66) .

Older adults having chronic kidney disease (CKD) have a higher rate of fracture than those without chronic kidney disease. Osteoporosis and chronic kidney disease mineral and bone disorder (CKD-MBD) are risk factors for skeletal fractures. In addition, CKD-MBD is also a risk factor for cardiovascular disease. Pharmacological and non-pharmacological therapy are both important to prevent complications of chronic kidney disease and osteoporosis. Therefore, a prospective intervention study is purposed to investigate the effect of a multifaceted intervention including exercise, diet modification, and pharmacological therapy on their outcomes. Patients who are older than 50 years old and have chronic kidney disease G3-G4 (estimated glomerular filtration rate > 20 ml/min per 1.73 m2) with a high risk of fracture (screening by Fracture Risk Assessment Tool (FRAX®)) are enrolled. Baseline questionnaire, clinical, laboratory and radiological examination are performed. If CKD-MBD or osteoporosis are revealed, the intervention will be given accordingly. All examinations will be repeated every 3 months, except bone mineral density and x-ray film for the spine to investigate the effect of the intervention. After one-year, primary outcomes including mortality, cardiovascular events, subsequent fracture, and fall rate will be examined. The secondary outcomes include changes in biochemistry laboratory data before and after interventions (pharmacological therapy and lifestyle modifications). The bivariate analysis will be performed using the t-test or Mann-Whitney U test for continuous variables with normal or non-normal distribution, respectively. Chi-squared test for categorical variables will be used to test correlations between baseline characteristics, change of laboratory results and outcomes. The paired t-test will be used to examine the difference between before and after the interventions. Stepwise multivariate logistic regression models will be used to identify the correlates of outcomes after adjusting for potential confounders.

Aim: to examine the effect of an exercise intervention for preventing osteoporosis among postmenopausal women. Objectives: To examine whether mean values for Broadband Ultrasound Attenuation (BUA) using Quantitative Ultrasound (QUS) among postmenopausal women following an eight-month exercise intervention (and at 3-month follow up), will be significantly higher than those obtained pre-intervention. To examine whether mean BUA values among postmenopausal women following an eight-month exercise intervention (and at 3-month follow up) will be significantly higher than mean values obtained from participants in a control group undertaking sham exercises for an equivalent duration. To examine the feasibility of the eight-month exercise intervention for a potential larger study (larger sample size, increased number of trial arms and increased outcome measures), in terms of recruitment, adherence, perceptions, barriers, and acceptability.

This study will investigate participant satisfaction (including compliance, preference, tolerability) with once-monthly Bonviva in women with post-menopausal osteoporosis or osteopenia transitioned from once-weekly alendronate or risedronate. The anticipated time on study treatment is 6 months, and the target sample size is 1776 individuals.

According to the World Health Organization criteria, osteoporosis was defined as a bone mineral density that lies 2.5 standard deviations or more below the average value for young healthy women. Osteoporosis is a major cause of fractures and can lead to serious complications in postmenopausal women. For this reason, approaches to prevent the appearance and progression of osteoporosis are of primary importance. This randomized clinical trial analyzes the effects of two types of physical exercise oriented to prevent osteoporosis in postmenopausal women with pharmacological supplements of Calcium and Vitamin-D.