Clinical Research Directory

Evaluation of Dora Care for Supporting Fracture Liaison Services (FLS)

What is the study about? This study is testing "Dora", an AI-powered assistant that can make phone calls to patients, for use in the Fracture Liaison Service (FLS). The FLS is a clinic that helps prevent more bone fractures after an initial "fragility fracture" (a break that happens easily, usually due to osteoporosis). Why is this being done? FLS clinicians often have to spend a lot of time on routine phone calls for assessments and follow-ups. If Dora can safely and accurately collect patient information, it might save time for staff and still give patients a good experience. What will happen to patients in the study? Invitation and consent - Patients with a new fragility fracture who are eligible will be invited to take part after informed consent. Dora call - Patients will receive an automated phone call from Dora, at the start of their FLS pathway and at follow-up. At intake, Dora will ask about risk factors for bone problems (e.g., smoking, alcohol use, family fracture history). At follow-up, Dora will ask about medication use, side effects, falls, or new fractures. Clinician call - Soon after, patients will have their usual phone appointment with an FLS clinician, who asks similar questions. Surveys/interviews - Patients will be asked to complete a short questionnaire and take part in an optional interview to say how they felt about talking to Dora. What about clinicians? Clinicians involved in the FLS pathway will be asked to complete a short survey and to take part in an optional interview to understand how useful Dora's reports might be in their work. Who can take part? Patients - Age 50+, English-speaking, with a new fragility fracture, and able to use the phone. Clinicians - Those working in FLS or similar bone health services. How long will it take? Each patient might be involved for up to about 7 months. The whole study will take about a year.

Oxytocin Effects on Bone in Children With Autism Spectrum Disorder

This is a randomized, double blind, placebo-controlled study of the effects of intranasal oxytocin on bone health in children with autism spectrum disorder, ages 6-18 years old. Subjects will be randomized to receive intranasal oxytocin or placebo (30 IU, 2 times daily) for 12 months in the double-blind phase, followed by a 6-month open label phase during which all study subjects will receive intranasal oxytocin (30 IU, 2 times daily). Study visits include screening to determine eligibility, followed by study visits at baseline, week 2, and months 6, 12, 18 and phone calls every two weeks for the first two months and monthly thereafter for the duration of the study. Study assessments include history and physical examinations, anthropometric measurements, electrocardiogram (EKG), adverse event monitoring, laboratory tests for chemistries, hormones and biomarkers for bone metabolism, questionnaires regarding diet and exercise, and imaging to assess body composition, bone density and structure.

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.

Strong Foundations 2.0: A Digitally Delivered Fall Prevention Program.

Study Description: The investigators propose to extend earlier research conducted during a feasibility study (Strong Foundations 1.0) by enrolling participants who have a greater risk for falling (x4 cohorts of up to 15 individuals) and from a lower socio-economic status (x4 cohorts of up to 15 individuals), and by collecting high quality laboratory based measures of balance, posture, and strength to better determine the effectiveness of the program and its suitability for widespread deployment. Additionally, the investigators hope to showcase it is feasible to sustain programmatic gains with ongoing digitally delivered content by combining cohorts into a larger group that continues to practice the foundational exercises taught during the 12-week initial program.

Bone and Muscle Health Following Sleeve Gastrectomy in Men, Premenopausal and Postmenopausal Women

Background: Bariatric surgery is gaining in popularity. While it's health benefits are undisputed, the older malabsorptive bariatric procedures (Roux-in-Y gastric bypass - RYGB and biliopancreatic diversion - BPD) are associated with an increased risk of fractures and falls as early as 3-5 years after surgery. Sleeve gastrectomy - SG is now the most performed bariatric procedure. Although SG does not cause malabsorption, it is predicted to result in bone and muscle loss via weight loss and weight loss-independent mechanisms. Primary aim: to compare the changes in spine volumetric bone mineral density (vBMD) by quantitative computed tomography (QCT) and muscle mass at mid-femur by computed tomography (CT) at 3 years in the 3 groups of: 1) men; 2) premenopausal women; 3) postmenopausal women after SG versus their respective non-surgical peers who did not undergo SG in the 3-year period following recruitment. Secondary aims: to compare the changes in vBMD by QCT at skeletal sites other than the spine and in areal bone mineral density (aBMD) by dual-energy X-ray absorptiometry (DXA), whole-body muscle mass by DXA, muscle quality by CT at mid-femur and muscle strength as well as in selected physical performance and capacity tests shown to predict falls and fractures between 0-1 and 1-3 years after SG in the same 3 groups after SG vs. in the respective non-surgical groups.

Bone Health After Bariatric Surgery in Patients With Type 2 Diabetes

Background: Bone fragility is a complication of type 2 diabetes. Diabetes treatments may ameliorate or deteriorate bone fragility in this population. Bariatric surgery is gaining in popularity in people with type 2 diabetes and may impact bone health. Objectives: To evaluate the impact of the most popular bariatric procedure worldwide (sleeve gastrectomy (SG)) on vBMD by QCT in patients with type 2 diabetes; Secondary aims: (1) to identify the determinants of vBMD after bariatric surgery in patients with type 2 diabetes; (2) to compare vBMD and its potential determinants after bariatric surgery with obese controls without diabetes as well as with controls without obesity and normoglycemia.

NEUROENDOCRINE REGULATION OF BONE-FAT CROSSTALK IN OBESITY

To study the effect of neuroendocrine dysfunctions on bone health in obesity

Impact of Glycemic Control on Skeletal Outcomes in Adults With Type 1 Diabetes

Background : Type 1 diabetes (T1D) is associated with an increased risk of fractures. The mechanisms accounting for this bone fragility are not yet fully understood. As T1D is often diagnosed in childhood or early adulthood, the lower bone mineral density (BMD) and deteriorated bone microarchitecture observed in T1D may reflect changes in the bone that occurred before or at the time of peak bone mass achievement. There is a lack of high-quality prospective studies to determine whether adults with T1D continue to lose BMD or deteriorate bone quality compared with controls. Moreover, while chronic hyperglycemia is a risk factor for fracture in T1D, it is unknown if better glycemic control affects bone outcomes. This prospective multicenter cohort study aims: (1) To compare the changes in the following outcomes over 4 years in adults with T1D and controls without diabetes of similar age, sex and body-mass index distribution: BMD by dual-energy X-ray absorptiometry (DXA) at the femoral neck, hip, spine, and radius, trabecular bone score (TBS) by DXA, and serum biochemical markers of bone turnover (BTMs); (2) To evaluate whether long-term glycemic control or the presence of a microvascular complication are independent predictors of the changes in BMD and TBS in people with T1D.