2,503 Clinical Trials for Various Conditions
The aging population is rapidly increasing, and it is important to identify dietary factors that can prevent disease and promote health in this group. Legumes, such as peanuts, are a plant-based food high in protein and unsaturated fat making this a healthy choice but are not consumed frequently enough in older adults. Studies have shown that regular nut consumption is associated with lower adiposity and reduced weight gain, and several dietary pattern studies indicate that nuts and legumes are associated with better bone health. In addition, our preliminary translational data indicates that a higher monounsaturated fatty acid (MUFA) intake is associated with improved bone mineral density (BMD) and quality. Given these findings, the proposed study aims to examine the impact of consuming peanut products on bone health, metabolic health (e.g., serum glucose, insulin, lipids and inflammation), markers of brain and sleep health, and physical function in overweight and obese older adults before and after a six-month weight loss intervention using a randomized controlled design. The results of this study have the potential to provide valuable insights into the role of peanuts as a sources of fatty acids in promoting health and preventing disease in at-risk adults.
The study team is inviting 13 healthy people to complete a study to explore how calcium affects hormones and bones after eating. Participants will be asked to complete two study visits within eight weeks. Before each visit, participants will be asked to not eat or drink (except water) for 9 hours. At each visit, participants will eat the same meal provided by the research team. Along with their meal, they will take a pill - in one session, this will be a calcium supplement, and in the other, a placebo (a pill with no calcium), but they won't know which one they are taking at which session. A phlebotomist will draw blood before the meal and pill, then again several times after eating. Blood draws will take place over three hours. During that time, participants will complete questionnaires about health, diet, and physical activity. Blood will be analyzed to check on various health indicators, like bone health markers and certain hormones, to see how they change after the meal. The difference in these health indicators between the calcium and placebo sessions will help the study team understand the impact of calcium on health after eating. This could help increase knowledge of the impact of calcium on hormones and bone health.
The principal objective of this study is to examine whether the addition of 100 g dried plum to the diets of men, regardless of their bone status, positively influences their indices of bone turnover in comparison with their corresponding baseline values and the control regimen.
This is a small intervention study with healthy males aged 20-65 years old who habitually sleep 7-9 hours/night.This study investigates if and how sleep restriction, independent of circadian misalignment (e.g. shift work, jet lag), induces a decrease in the bone formation marker Procollagen I Intact N-Terminal Propeptide (PINP). The specific aim is to evaluate the mechanistic underpinnings for the relationship between sleep restriction and suppression of bone formation. The study will enroll 12 healthy male participants and have a two-week intervention after enrollment.
The purpose of this study is to compare contrast agents, Dotarem or MultiHance. The study will test to see how much of these two contrast agents are deposited in the bones or tissues of pediatric patients. The patients receiving contrast will then be compared against pediatric patients who have not received any contrast prior to cardiac surgeries.
Subjects must be scheduled to undergo an orthopedic surgical procedure. Subjects in the non-control group must have previously received an MRI with MultiHance or ProHance with at least 1 month between the last administration and the scheduled surgery. Subjects who have never received MultiHance or ProHance or any other gadolinium agent will also be enrolled. Subjects must have a test of their kidney function (SCr) at the time of the last MRI examination or at the time of enrollment if they never received gadolinium. A sample of bone and skin will be collected from the scheduled surgery and tested for the amount of gadolinium. An additional sample of skin will be collected for testing the presence of nephrogenic systemic fibrosis (NSF).
Craniosynostosis (CS) is a common malformation occurring in \~4 per 10,000 live births in which the sutures between skull bones close too early, causing long-term problems with brain and skull growth. Infants with CS typically require extensive surgical treatment and may experience many perioperative complications, including hemorrhage and re-synostosis. Even with successful surgery, children can experience developmental and learning disabilities or vision problems. Most often, CS appears as isolated nonsyndromic CS (NSC). Of the several subtypes of CS, unilateral or bilateral fusion of the coronal suture is the second most common form of CS accounting for 20-30% of all NSC cases. The etiology of coronal NSC (cNSC) is not well understood, although the published literature suggests that it is a multifactorial condition. About 5-14% of coronal craniosynostosis patients have a positive family history, with a specific genetic etiology identified in \>25% of cNSC cases, suggesting a strong genetic component in the pathogenesis of this birth defect. The causes for cNSC and its phenotypic heterogeneity remain largely unknown. An international team of investigators will generate large genomic and gene expression datasets on samples from patients with cNSC. State-of-the-art imaging, genetic, and developmental and systems biology approaches will be used to quantitatively model novel pathways and networks involved in the development of cNSC. Novel variant-, gene- and network-level analyses will be performed on the genomic data obtained from cNSC cases, their relatives, and controls to identify novel variants and genetic regions associated with cNCS. Quantitative, analytical, and functional validations of these predictions will provide insights into the etiology and possible therapeutic targets for CS and potentially other bone-related disorders.
The purpose of this study is to estimate the effect of oral Boniva (ibandronate sodium)taken once monthly versus placebo on bone quality and strength at the hip at one year.
A longitudinal, randomized, controlled, single-center Phase IV clinical trial will be performed to assess changes in bone mineral density (BMD) among voluntary apheresis blood donors. The primary outcome measure will be clinically significant decline in BMD at the lumbar spine assessed by dual-energy x-ray absorptiometry (DXA).
The purpose of this study is to examine the impact of weight-loss surgery (Roux-en-Y gastric bypass or Vertical Sleeve Gastrectomy) on bone outcomes in girls and boys ages 13-21. This study will also examine a group of overweight boys and girls who are not scheduled or planned for surgery for comparison of these outcomes. Obese adults who undergo weight-loss surgery are at risk for bone loss and decreased bone strength. The investigators do not know the effects of such surgery on bone in teenagers and young adults. The purpose of this study is to find out how different types of weight loss surgery affect bone density and strength in teenagers and young adults and compare these results to obese teenagers and young adults who are not undergoing weight-loss surgery.
The primary objective of this randomized, double-blind, placebo controlled trial is to determine the efficacy of a once per day calcium (1000mg) and vitamin D (1000IU) fortified food product on bone turnover markers, including parathyroid hormone (PTH) and microarchitecture during Army basic military training (BCT). The investigators hypothesize that consumption of a once daily calcium and vitamin D fortified food product will stabilize PTH and contribute to improved bone microarchitecture compared to placebo. The results will determine the efficacy of daily supplementation with calcium and vitamin D on bone turnover markers as well as provide novel data regarding microarchitectural changes during BCT as assessed by high resolution peripheral computed tomography (HRpQCT) scanning.
Because the diabetics are fracturing at a younger age than the general population (12), this leads us to believe there are significant factors that lead to fracture in Type 1 diabetes mellitus (DM) other than bone mineral density (BMD). Very little longitudinal data exists on BMD in adults with Type 1 DM and the effects of glucose control on BMD. No longitudinal data exists on pQCT in adults with Type 1 DM. Hypothesis: Adult subjects with diabetes and poor glucose control will lose bone mineral density (BMD) as measured by DXA compared to age and sex matched healthy controls.
Utilizing an extremely well-characterized HIV cohort under observation as ART-naïve or since their first exposure to HIV treatment, the investigators will conduct a cross-sectional study with prospectively collected data to determine BMD in 200 subjects. Subjects identified were initially treatment naïve when entering the University of Alabama at Birmingham (UAB) 1917 HIV Clinic between 1999 and 2010; some have been under observation without being treated with ART therapy and others were newly started on ART therapy while under observation. For each subject, the investigators will determine associations between BMD and 1) cumulative viremia, 2) ART duration, and 3) ART type. Hypothesis 1a: BMD will be lowest in HIV+ subjects with the highest levels of cumulative viremia. Hypothesis 1b: BMD will be greatest in HIV+ persons with longest duration of ART therapy, after excluding those subjects treated with tenofovir. Hypotheses 1c: BMD will be lower in subjects treated with tenofovir vs. other ART agents, after controlling for duration of therapy. Additionally, the investigators will conduct a retrospective study in 100 patients HIV+ and were ART-naïve at the time of entry into the 1917 Clinic in whom the investigators will longitudinally evaluate the relationship between HIV viral load, inflammation, and bone turnover (through the measurement of HIV copy-years viremia, interleukin-6 {IL-6}, tumor necrosis factor alpha {TNF-a}, high-sensitivity c-reactive protein {hsCRP}, osteocalcin, and urine C-telopeptide {CTX}). The investigators will compare HIV patients at a similar stage of their disease who remain treatment naïve (either due to concerns for compliance or sufficient CD4 counts without treatment) (ART-) vs. those newly started on ART (ART+). Hypothesis 2: Viral load, markers of inflammation, and markers of bone resorption will all decrease in ART+ vs. ART- persons.
Cystic fibrosis (CF) affects an estimated 30,000 people in the United States and is caused by a mutation in the gene encoding a protein called CF transmembrane regulator (CFTR). The hallmarks of CF are recurrent pulmonary exacerbations and declining pulmonary function. However, there are other problems in CF that affect both health and quality of life. These include CF related diabetes, liver disease, and bone disease. The median age of survival for patients with CF has been increasing steadily and is currently more than 37 years. With this improvement in life expectancy, it has become increasingly important to address the long-term complications of CF. Currently, patients with CF are evaluated annually for bone disease with dual X-ray absorptiometry (DXA), and screening usually starts at age 12. However, this may not be sufficient to detect early bone changes that may impact fracture risk. Furthermore, bone disease in children may manifest earlier than adolescence, which would suggest that screening should start at an earlier age in these vulnerable patients. The following study is therefore proposed to examine the potential role of peripheral quantitative computed tomography (pQCT) as a screening approach for bone disease in children with CF. The investigators expect to find bone problems by pQCT but not DXA.
Patients with severe acid reflux and/or Barrett's esophagus are recommended to take Proton pump inhibitors (PPIs)indefinitely to prevent complications such as strictures or the development of a type of esophageal cancer. Recently, some studies suggested that taking these medications on a long-term basis may affect the bone. Therefore, it is important to learn whether these medications may lead to accelerated bone loss so that effective preventive measures can be developed for patients who require these medications for acid-related conditions. Several studies reported that patients receiving PPIs for many years may have increased risk of hip fractures. However, it is unclear whether this is because the PPIs cause reduced bone density or whether the increased risk of fractures has nothing to do with PPIs and is because patients who require PPIs have other illnesses that cause the increased fractures. The purpose of the study is to learn how bone structure and bone mass change after long-term PPI use.
Women between the ages of 18 and 45 are needed for a study that looks at the effect of calcium supplementation on bone health during pregnancy in black and white women. Study subjects will be divided into two groups. Each group will take 2 study supplements each day, the supplement will be calcium or placebo (a pill without calcium). The study involves five visits to the Children's Hospital of Oakland Research Institute; each visit will be 1-2 hours in length. There are 3 study visits during pregnancy and 2 in the first year after delivery. At each visit you will have your blood drawn and be asked questions about what you eat and what type of activities you do. At visit 16 and 36 weeks and 4 and 12 months postpartum you will have your bone density measured. You will be paid $240 for completing the study.
Decreased bone strength is a common and serious medical problem present in many people with anorexia nervosa. Men with anorexia nervosa have lower levels of gonadal steroids such as testosterone. Low testosterone levels have been shown to result in low bone density. We are investigating whether bone mineral density and bone microarchitecture are abnormal in males with anorexia nervosa and whether supplementation with testosterone would improve both bone mineral density and bone microarchitecture.
Decreased bone strength is a common and serious medical problem present in many women with anorexia nervosa, or disordered eating. Women with decreased bone strength are more likely to suffer broken bones than women with normal bone strength. We are investigating whether a hormone that is naturally produced by the human body -- parathyroid hormone (PTH) -- can help strengthen the bones of women with anorexia nervosa.
The purpose of this study is to determine the effects of rosiglitazone on the bone in postmenopausal women with type 2 diabetes mellitus
The purpose of this research study is to find out what IG-IMRT radiation dose works best for treatment of disease in bone or soft tissues. This protocol will study what dose level may work most effectively. The first part of study will treat 10 patients with 22 Gray. Gray (Gy) is the unit that is used to describe the dose of radiation that is being given to a person with cancer. After we confirm that 22 Gy is a safe and sufficient amount of radiation, we will then treat another group of patients with 24 Gy and so on until we reach 28 Gy. Each dose level starting with 24 Gy will enroll at least 20 patients per treatment site (bone, bowel and/or spine). Patients will be enrolled in each treatment category until 20 patients in each strata reach an evaluable time point of 3 months post-RT. When we understand what dose works best and has the least amount of bad effects, the study will then look to see how well the patients do after the radiation therapy. This study is trying to see how your doctor can best treat the cancer that has spread to the other parts of your body.
Thiazolidinediones (TZDs) are a commonly used antidiabetic drugs currently used by over a million patients in the United States. Recent studies have shown that treatment with TZD may increase the risk of bone fractures. The cause of bone loss is not known. We believe that TZD may cause increased accumulation of fat in the bone marrow, which may cause decrease bone formation and weak bones. .
An increased skeletal fracture risk in diabetes has only recently been recognized. This human study is designed to elucidate the effect of Type 1 diabetes on bone remodeling and on structure.
Building stronger bones during pubertal growth could reduce lifelong fracture risk. This project is an 18 month dairy intervention study for overweight and healthy weight 4th-8th grade boys and girls. Half of the girls will receive dairy products to add to their habitual diet (milk, yogurt, and cheese) to equal three products per day, while the other half will remain on their normal diet. All participants will attend four study visits, each 6 months apart. At these visits height, weight, bone density and geometry, and fat and lean mass will be measured. This study aims to show that meeting calcium requirements by eating dairy products builds bigger, stronger bones, and that this effect may be enhanced in overweight boys and girls. The effect of the dairy intervention on body fat, lean mass, and weight, as well as the mechanisms and predictors of changes in bone mass and size and body composition will also be evaluated.
The purpose of this study is to see whether fast imaging with MRI and the usual contrast material used for MRI, predicts which patients will do well with treatment. Some studies suggest that MRIs done right before surgery may be able to tell how much of the cancer was killed by the chemotherapy. This study will see if this is true in patients with osteogenic sarcoma (OS) and Ewing's sarcoma (ES). This study will also see if MRIs done early in treatment can tell if the chemotherapy is working.
To establish a serial ascertainement of specimens from patients with bone sarcomas to be used in ongoing cytogenetic and molecular genetic analyses. These data will be integrated and correlated with the established Orthopaedic Service clinical database.
The purpose of this study is to determine whether the hormone dynamics in women with anorexia nervosa and hypothalamic amenorrhea is related to bone loss in those populations.
Decreased bone strength is a serious medical problem present in many women with Anorexia Nervosa, or disordered eating. Women with weaker bones are more likely to suffer broken bones than women with normal bone strength. We are investigating whether a hormone that is naturally produced by the human body, called growth hormone, can help strengthen the bones of women with this type of disordered eating.
The purposes of this study are: 1. To find the highest dose of monthly intravenous Zometa that can be given with daily low doses of cyclophosphamide by mouth to children with recurrent or refractory neuroblastoma without causing severe side effects. 2. To find out the side effects seen by giving Zometa and cyclophosphamide on this schedule at different dose levels. 3. To measure blood and urine levels of Zometa during treatment 4. To preliminarily evaluate the antitumor activity of Zometa and concomitant oral cyclophosphamide in children with recurrent and/or refractory neuroblastoma within the confines of a Phase I study. 5. To measure the effects of Zometa on markers of bone breakdown found in urine, blood, and bone marrow 6. To measure the effects of Zometa on the immune system.
This study will determine the effects of soy products on in vitro surrogate cancer markers as well as bone density markers and quality of life parameters in men and women. This study will also determine concentrations of isoflavones (naturally occurring plant compounds that act like estrogen in the body) in prostate tissue that has been removed during prostatectomy, as well as in the blood.
The purpose of this randomized, double-blind, placebo-controlled study is to estimate the effect of oral ibandronate sodium (Boniva) taken once monthly versus placebo on bone quality and strength at the proximal femur at one year.