Clinical Research Directory

Metabolic Health, Bones and Nuts During Weight Loss in Adults

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.

Melatonin Effect on Immediate Dental Implants in the Posterior Mandible

This pilot randomized controlled clinical trial aims to evaluate the feasibility, clinical safety, and preliminary radiographic osteogenic effects of applying topical 1% w/w melatonin gel during immediate implant placement in the posterior mandible. The study assesses surgical feasibility, soft-tissue healing, bone density, buccal bone thickness, and implant stability to provide preliminary effect size and variance estimates to inform future definitive clinical trials.

The Effect of Different Exercise Models on Body Fat and Bone Mineral Density in Sedentary Women

The aim of this research is to evaluate the effects of different exercise models on body fat percentage and bone mineral density in sedentary women. Twenty-four volunteer sedentary female participants were divided into four groups using stratified randomization: core exercise group, core-walking group, walking group, and step group. Training protocols lasted for 3 days a week over an 8-week period. Fat and bone mineral density measurements were performed in the department of radiology at Selcuk University Faculty of Medicine Hospital.

Occlusal Balance Effect on Mandibular Trabecular Bone by Using Fractal Analysis in Complete Denture Patients (Split-Mouth Study)

Although the number of individuals who are edentulous is declining, a sizable fraction still needs a complete denture for their oral rehabilitation.Tooth loss is an issue in public health that determines quality of life since it is linked to socioeconomic, physiological, and psychological aspects. In patients who are completely edentulous, dental implants have been viewed as a favorable choice for rehabilitation.

Effect of Thymoquinone 0.2% Gel on Bone Density, Bone Width, and Socket Preservation After Tooth Extraction

This study aims to evaluate the clinical and radiographic effects of 0.2% Thymoquinone gel on bone density, bone width, and socket preservation after tooth extraction.

Comparison Between Socket Shield and Conventional Techniques in Immediate Implant Placement.

The goal of this randomized clinical trial is to compare whether immediate implant placement using the socket-shield technique can better preserve bone density, bone level, and peri-implant tissue health compared to conventional immediate implant placement in patients requiring tooth extraction in the maxillary esthetic zone. This study is conducted in systemically healthy adult patients aged 20-60 years who have non-restorable maxillary anterior teeth indicated for immediate implant placement. The main questions this study aims to answer are: Does the socket-shield technique result in better peri-implant bone density and bone level preservation compared to the conventional immediate implant technique? Does the socket-shield technique lead to improved clinical peri-implant parameters, including probing depth, bleeding on probing, keratinized tissue width, and soft tissue thickness? participants will be divided into two groups: (both groups will receive immediate implant placement of a tooth requiring extraction in the maxillary esthetic zone.) First group: will recieve immediate implant using conventional technique. second group: will recieve immediate implant using socket shield technique. Participants will: * Undergo clinical and radiographic examinations, including cone beam computed tomography (CBCT). * Receive immediate implant placement using either the conventional technique or the socket-shield technique. * Be followed up clinically and radiographically for 9 months to assess bone and soft tissue healing. * Attend regular postoperative and follow-up visits for evaluation of implant stability and peri-implant tissue health.

Role of Estrogen on Skeletal Outcomes in FHA

The purpose of this study is to assess whether the natural form of estrogen (17-beta estradiol) given as a patch so that it is absorbed through your skin, is better at improving bone strength over 1 year than natural estrogen (17-beta estradiol) taken by mouth, or a synthetic form oestrogen (ethinyl estradiol) given as a patch that also provides birth control. Participants will: 1. Take estrogen for 1 year either (i) in its natural form as a patch twice a week (and progesterone by mouth for 12 days of each month), or (ii) in its natural form as a pill daily (and progesterone by mouth for 12 days of each month), or (iii) in a synthetic form as a birth control patch weekly for 3 weeks with 1 week off the patch. You will not be able to choose which form of estrogen you will receive as this will be assigned to you based on a pre-existing randomization sequence (like the flip of a coin) 2. Take provided calcium and vitamin D supplements 3. Attend 4 study visits over 12 months with two at the beginning and then every 6 months that include: * History and Physical Exams * Lab Work * Imaging studies * Questionnaires * Dietary recalls

Collegiate Athlete Study

The purpose of this study is to determine what percentage of Black collegiate athletes have low energy availability. It will also determine the percentage of Black collegiate athletes who have iron deficiency, suboptimal or low Vitamin D levels, and may be at risk for male and female athlete triad. Subsequent to the initial assessment, participants will complete a 12-week iron and vitamin D dietary supplementation protocol according to their baseline iron and vitamin D status.

Effects of Whole Body Vibration in Different Devices on Bone and Muscle Mass in Postmenopausal Women

Postmenopausal women suffer from a series of negative health factors, such as decreased bone and muscle mass and physical performance, increasing the risk of falls and decreasing quality of life. Therefore, intervention strategies aimed at mitigating these factors are essential. A technique that has been studied and can reverse these factors is whole-body vibration (WBV), however studies present contradictory results and the main confounding factor appears to be related to the type of vibration (synchronous or side-alternating). Therefore, the primary objective of this project is to verify the effects of 12 months of whole-body vibration on different devices on bone mineral density measurements in postmenopausal women. As a secondary objective, the effects on muscle mass, physical performance, quality of life and falls will be verified. 127 postmenopausal women will participate in the study and will be randomized to: triplanar vibration (synchronous); side-alternating vibration; or false vibration. The interventions will last 12 months and will occur three times a week on non-consecutive days. The following assessments will be carried out at baseline, 6-months and 12-months: bone mineral density and muscle mass by DXA equipment, muscle thickness by ultrasound, peak torque of the knee extensor and flexor muscles by an isokinetic dynamometer, hand grip, balance static postural and vertical jump on a force platform, dynamic balance using the Timed Up and Go test, SPPB battery, fear (FES-I) and incidence of falls and quality of life (SF-36).

The Effect of Weight Loss and Dietary Protein Intake on Bone

The purpose of this study is to learn how the amount of protein during moderate weight loss influences bone health. We will also examine how two levels of protein intake affects diet quality.

Bed Rest With a Short Cervix on Preterm Birth

Maternal AR has long been used to prevent PTB. However, definitions of AR vary widely, ranging from complete bed rest to partial limitation of physical activity for one or more hours daily. The use of maternal AR to prevent preterm birth is largely based on observational evidence linking strenuous physical activity to an increased risk of preterm birth, and the assumption that reduced activity may decrease myometrial activity. However, the existing evidence on the clinical effects of AR remains limited and has not demonstrated a reduction in preterm birth or a delay in deliv-ery. In contrast, some studies suggest a potential increase in preterm birth following AR and instead significant adverse maternal and fetal effects. The overall aim of this study is to compare gestational age at birth in women with a short cervix who are prescribed AR compared with women with a short cervix who are not prescribed AR (NAR). The primary hypothesis is that NAR is non-inferior to AR in prolonging pregnancy in women with a short cervix. Secondary hypotheses are that, compared with AR, NAR is associated with higher level of physical activity, lower risk of maternal depression, and reduced risk of loss of maternal bone mineral density. Through the BEWISE study, we wish to implement a change in the Danish national clinical practice regarding AR from recommending AR in risk groups (current practice) to no longer recommending AR as part as routine care (new practice). We will evaluate this change in clinical practice by prospectively collecting data from women both before and after implementation of the new recommendation. The transition from AR to NAR will be implemented sequentially in each Danish region using a randomised stepped-wedge (SW) cluster design, with each region constituting a cluster. The order in which regions transition is determined by randomisation. Each region will adopt the new recommendation at 3-month intervals, resulting in full national transition from AR to NAR within 12 months Eligible participants are pregnant women in gestational age 20+0 to 33+6 and cervical length \< 25 mm in singleton pregnancies and \< 30 mm in multiple pregnancies. Participants must be above 18 years of age and be able to read and understand Danish or English. There are no exclusion criteria. The primary outcome is gestational age in days (continuous).

VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)

The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or fish oil (1 gram of omega-3 fatty acids) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. This ancillary study is being conducted among a sub-cohort of 771 participants in VITAL and will test the efficacy and safety of high-dose vitamin D supplementation vs. placebo on skeletal health and body composition.

VITamin D and OmegA-3 TriaL: Interrelationship of Vitamin D and Vitamin K on Bone (VITAL)

Vitamin D supplements are widely promoted for bone health. Both vitamin D and vitamin K are important for deposition of calcium in bone, but little is known about the relationship of vitamin K status and bone health.

Bone Metabolism in 12-21 Year Olds Undergoing Glucagon Like Peptide (GLP)-1 Receptor Agonist Therapy

The goal of this clinical trial is to compare bone health markers over 24 months in participants 12 - 21 years of age with obesity who are starting the glucagon-like peptide-1 receptor agonists (GLP-1RAs) as compared to those with similar weight followed by lifestyle management. Participants will: * Take GLP-1RA as prescribed or continue to work on lifestyle management for weight loss * Take provided calcium and vitamin D supplements * Attend 6 study visits over 24 months with two at the beginning and then every 6 months that include: * History and Physical Exams * Lab Work * Imaging studies * Questionnaires * 24-hour dietary recalls

Topic Simvastatin for Bone Regeneration

The goal of this clinical trial is to evaluate the efficacy of topical application of simvastatin in bone regeneration in the maxillae, in the reduction of dimensional bone changes, using mandibular third molar surgery as a model and assessing bone healing at 12 weeks. We will also compare the two forms of intralveolar topical administration currently used to assess which is the best form of administration. The main questions it aims to answer are: * Can the topical application of simvastatin, used as a preservation material, improve the variations with respect to bone dimensions and density that occur after tooth extraction. * Can topical application of SM improve soft tissue healing. * Does the topical application of SM produce changes with respect to postoperative variables of pain, inflammation or trismus. * What is the best vehicle for topical SM administration? For this purpose, the investigators will randomly place 4 topical treatment options in the postextraction alveoli: * SM in gel form * collagen sponge impregnated with saline solution containing 10 mg of SM * collagen sponge with placebo gel. All patients will undergo postoperative CBCT, which will be repeated at 12 weeks. In addition, inflammation, trismus and pain variables will be measured preoperatively, at 24 hours, 3 and 7 days.

Effect of Long-Term Use of Tenofovir (TDF) on Bone Density in Patients With Chronic Hepatitis B

This study aims to evaluate the effect of long-term use of Tenofovir Disoproxil Fumarate (TDF) on bone density in patients with chronic hepatitis B virus (HBV) infection. Tenofovir is a widely used antiviral medication for the treatment of HBV. While it is generally well tolerated, some studies have reported potential adverse effects on bone mineral density, particularly with long-term use. The objective of this research is to assess whether extended TDF therapy is associated with reduced bone density or increased risk of osteopenia or osteoporosis in adult patients with chronic HBV infection. The study will involve clinical evaluation and radiological assessment of bone health using dual-energy X-ray absorptiometry (DEXA) scans, as well as relevant biochemical markers. This investigation will provide important data on the long-term safety profile of Tenofovir in relation to bone health and help guide future clinical decisions for the management of chronic hepatitis B.

Reference Curves for Bone Mineral Density and Body Composition in Women Aged 20-89

Up-to-date normalcy curves for bone mineral density and body composition (fat and lean mass), are currently lacking. DMS IMAGING is therefore financing the MONIKA study, with Nîmes University Hospital as sponsor. Some 425 healthy female volunteers aged 20 to 89 will be recruited from three centers (Nîmes, Montpellier and Lyon). A bone density scan at various bone sites (femur, rachis, radius and whole body) will provide up-to-date normalcy curves for bone mineral density as well as body composition (fat and lean mass). These measurements should help to better understand bone physiology and the links that may exist between bone tissue and muscle and adipose tissue. This is a prospective multicenter cross-sectional descriptive study of healthy female volunteers. The study population is made up of healthy female volunteers from Europe, the Middle East and North Africa aged between 20 and 89, stratified into 7 age groups.

Food Trial to Evaluate the Kinetics of the Medical Foods SBD111 and SBD121 Persistence in Healthy Adults

This study is a randomized, open-label, trial in healthy volunteers. Trial participants will be given a medical food product (combination of probiotics and prebiotics) called SBD111 or SBD121 for seven days and microbial abundance in feces will be measured during that time and for four weeks following administration.

Investigating the Relationship Between Temporal Bone CT, Bone Density, and Hearing Loss in Otosclerosis Patients

The goal of this observational case-control study is to evaluate the relationship between temporal bone computed tomography (CT) findings, bone mineral density (BMD), and audiological parameters in adults diagnosed with otosclerosis. The main questions it aims to answer are: Is there a correlation between temporal bone CT density values and the severity of hearing loss in otosclerosis? Do bone mineral density and serum vitamin D levels differ between otosclerosis patients and individuals without otosclerosis? Researchers will compare patients diagnosed with otosclerosis to a control group without otosclerosis to determine if CT-based density variations are associated with disease severity and systemic bone metabolism markers. Participants who have already had a temporal bone CT scan as part of their routine clinical evaluation will undergo: Bone mineral density (BMD) assessment via dual-energy X-ray absorptiometry (DEXA) Serum vitamin D level measurement Audiological testing, including pure tone audiometry and speech discrimination tests This study aims to improve the diagnostic and prognostic understanding of otosclerosis by integrating imaging, metabolic, and audiological data.

Mediating Role of Myokines in the Dialogue Between Muscle and Bone Tissue in a Population of Healthy Women Aged 20-89 Years

The main hypothesis is that muscle acts on bone tissue via the secretion of myokines (myostatin, follistatin, irisin). This is based on previous results showing that muscle mass in different patient populations with very different body mass indexes (anorexic or obese patients) is significantly and independently associated with bone mineral density.

Osteoimplant and Bone Healing

In view of the above and the possible improvements in terms of postoperative morbidity and tissue repair in oral surgery, this study is justified, the general objective of which would be: 'To evaluate the efficacy of perioperative oral administration of two nutritional supplements based on vitamins and antioxidants (Osteoimplant Complex® and Osteoimplant®), using mandibular third molar surgery as a study model, assessing postoperative symptomatology and bone density'. The null hypothesis of this study is: 1) the administration of the perioperative nutritional complex (Osteoimplant Complex® and Osteoimplant®) did not improve postoperative symptoms and 2) neither did it increase bone density after lower third molar extraction.

Whole Body Vibration in Middle Aged Men

This study aims of this clinical trial is to evaluate the effect of an 8-week Whole Body Vibration (WBV) intervention on Bone Mineral Density (BMD), hand grip strength, and vitamin D levels in middle-aged men. Findings from this study will contribute to understanding whether WBV is a viable alternative to conventional exercise, especially for those with limitations in physical activity. Study Objectives: • Primary Objective: To assess the effectiveness of an 8-week WBV intervention in improving BMD, hand grip strength, and vitamin D levels compared to a placebo intervention.

The Impact of Hormonal Contraceptive Use and Lifestyle Factors on Fracture Risk and Bone Quality in Young Female Adults

The study on hand is based on a cross-sectional design and aims to acquire 1) descriptive data on the physical state and health condition of female soldiers in the German armed forces. 2) a possible influence of different contraceptive methods as well as physical activity, body composition, strength, nutrition, and hemoglobin levels on bone health should be investigated.