View clinical trials related to Osteoporosis.
Filter by:This study will evaluate the therapeutic effects and safety of odanacatib on bone mineral density in osteoporotic postmenopausal women who were previously treated with alendronate.
This study aims to evaluate the safety and analgesic effect (efficacy) of Gastrolith powder (GASP) on skeletal pain caused by osteoporotic vertebral compression fractures (OVCF) versus placebo, primarily as assessed by the Numeric Rating Scale (NRS), and Brief Pain Inventory (BPI). It is also intended to evaluate disability change with the Oswestry Low Back Pain Disability Index (ODI) and to evaluate whether GASP consumption leads to reduction in analgesic standard of care (ASOC) versus placebo, using weekly analgesic consumption diaries.
This is a dose escalation study to determine the maximum tolerable dose of Parathyroid Hormone-related Protein, PTHrP, or Parathyroid Hormone, PTH, that can be given safely over one week in healthy African-American volunteers. The investigators plan to infuse low doses of intravenous PTHrP or PTH to determine if it leads to a sustained and progressive suppression of bone formation as occurs in humoral hypercalcemia of malignancy (HHM) or an increase in bone formation as occurs in hyperparathyroidism (HPT). Additionally, the investigators will assess the direct influence of PTHrP and PTH on vitamin D metabolism, markers of bone turnover, and fractional excretion of calcium. These results will be compared to previous studies of Caucasian volunteers.
Primary hyperparathyroidism (PHPT) is a common disease that occurs in 1 in 10,000 people every year. In the presence of this condition, the parathyroid glands produce excessive amounts of parathyroid hormone (PTH), which regulates calcium levels. The high levels of parathyroid hormone remove too much calcium from bones, and then deposit the excess calcium in the blood, which is then filtered into the urine by the kidneys. Bone health is threatened by excess calcium loss which weakens bone structure. Other affected organs include the skeleton (calcium loss leads to a "weakening" of the skeleton), and the kidneys (high blood calcium can lead to kidney stones). It is now evident that the majority of patients with even mild Primary Hyperparathyroidism are vitamin D deficient. In 2009, new international guidelines for the management of asymptomatic PHPT direct physicians to measure 25-hydroxyvitamin D (D3 or 25-OHD) in all patients, and to replete the reserve of vitamin D when the level is low (< 20 ng/ml). However, no recommendations for vitamin D repletion are given, because of limited data regarding the effects of vitamin D repletion, appropriate dosing and safety. Therefore, there is an urgent need for data upon which to base such recommendations, as well as are data on the effects of such treatment upon bones. Subjects with low vitamin D3 levels will be selected for this trial. They will be given enough vitamin D3 to raise their low blood levels from a low to a normal range. The assessments in this study, including the quadruple label bone biopsy, will allow us to document the short term effects of administering vitamin D3 on changes in bone. All participants enrolled in this trial will be vitamin D3 deficient. Participants will take an antibiotic (tetracycline) 4 times a day to mark the starting point from which bone changes will be assessed. After 3 days of tetracycline, a 12 week course of vitamin D3 or placebo will be initiated. Six of 7 participants will receive the study drug (active vitamin D3), while 1 in 7 will receive a placebo (sugar pill). Ten weeks later, another 3-day course of tetracycline will be given. At the end of 12 weeks, a bone biopsy will be done. A small piece of bone (about the size of a pencil eraser) will be removed from the hip (iliac crest). The bone will be analyzed to determine the effect of vitamin D3 on primary hyperparathyroidism. There will be 4 study visits: Screening, Baseline, Week 8, and Week 12 when the bone biopsy will be performed. Study Procedures: Medical and Social History Blood tests (drawn at the study center and local Quest Lab) 24-Hour urine collection for calcium and creatinine excretion Abdominal X-ray (to assess for kidney stones) Transiliac crest Bone Biopsy
This project wills to determine the incidence of osteoporosis in our population of HIV-infected patients and to assess the efficacy and security of ibandronate, whose efficacy in post-menopausal women has already been proved.
This study is being conducted to compare the effect of increasing nasal teriparatide dosing on percent change in Bone Mineral Density (BMD) of the lumbar spine after 24 weeks of therapy in postmenopausal women with low bone mineral density.
The main purpose of this study is to investigate the effect of two different group-based exercise programs on fall risk (muscular strength and balance) and bone strength in older women aged over 65-75 years who have low bone mass. We are also trying to determine if once a week exercise is as effective on health outcomes as twice a week. We hypothesize that twice a week exercise will be more effective than once a week or sham exercise.
The purpose of this study is to determine what effect teriparatide will have on vascular (blood vessel) compliance and osteoprotegerin (bone fluid)and RANKL levels (bone cells).
RATIONALE: Bisphosphonates, such as risedronate, may help improve bone health and prevent osteoporosis in postmenopausal women. It is not yet known whether risedronate is effective in improving bone mineral density and bone health in women with ductal carcinoma in situ. PURPOSE: This randomized phase III trial is studying risedronate to see how well it works compared to a placebo in improving bone mineral density and bone health in postmenopausal women with ductal carcinoma in situ enrolled in clinical trial CRUK-IBIS-II-DCIS (CRUK: Cancer Research UK) (DCIS: Ductal carcinoma in situ).
The study tries to reveal if aminobisphosphonates influence aside the bone density also the vascular status in the typical elderly patient population