Clinical trials: Vitamin D Deficiency/Insufficiency
Chronic Kidney Diseases, Hypertension
Integrated Diagnosis and Treatment of CKD on Outcomes
Objective: To establish a study cohort and follow up of patients with CKD in our hospital, and evaluate the status of integrated CKD diagnosis and treatment according to guidelines in the real world, as well as the clinical…
- Conditions
- Chronic Kidney Diseases, Hypertension, Hyperglycemia, Hyperlipidemias
- Trial name
- NCT05242055
- Testing
- Integrated diagnosis and treatment for CKD
- Where
- China
- Volunteers
- 1,000 people
- Sponsor
- Capital Medical University
Vitamin D Deficiency
The Effect of Vitamin D on Bone Accretion and Turn-Over in Young Girls
Objectives To evaluate the effect of increased vitamin D intake on vitamin D status, bone mass and bone turnover in young girls aged 12-13.
- Trial name
- NCT00267540
- Testing
- cholecalciferol (D3) (vitamin)
- Where
- Denmark
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
Cardiovascular Disease, Chronic Kidney Disease
Vascular Risk After Kidney Transplantation
Hypothesis: Nontraditional risk factors, such as inflammation, vitamin D deficiency, elevated PTH, insulin resistance, homocysteine, or uric acid, contribute to cardiovascular disease progression after kidney transplant.
- Conditions
- Cardiovascular Disease, Chronic Kidney Disease, Diabetes, Vitamin D Deficiency
- Trial name
- NCT00374595
- Where
- United States
- Volunteers
- 338 people
- Sponsor
- University of Nebraska
Hyperphosphatemia
The Effect of Oral Niacinamide on Serum Phosphorus Levels in Hemodialysis Patients
Elevated phosphorus levels are a common problem in dialysis patients. However, it is associated with an increase in death and hospitalizations.
- Trial name
- NCT00316472
- Testing
- Niacinamide
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Washington University School of Medicine
Healthy
Defining Vitamin D Insufficiency in School Age Children: A Randomized Placebo Controlled Trial of Vitamin D3
The study objective is to characterize the threshold levels of serum 25-hydroxyvitamin D for the definition of vitamin D insufficiency in 8-14 year old African American and Caucasian children.
- Trial name
- Vitamin D RCT (NCT00732758)
- Testing
- Vitamin D3 1000 IU
- Where
- United States
- Volunteers
- 157 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Vitamin D Deficiency, Polytrauma
Vitamin D and Bone Homeostasis in Ortho Polytrauma Patients
Although vitamin D is known to play a major role in multiple organ functions in healthy adults, including bone homeostasis, its role in the unique population of orthopaedic polytrauma patients has not been well described.
- Conditions
- Vitamin D Deficiency, Polytrauma, Orthopedic Disorder
- Trial name
- NCT03066817
- Testing
- Ergocalciferol 8000 IU/ML Oral Liquid [DRISDOL], Propylene Glycol
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- New York City Health and Hospitals Corporation
Vitamin D Deficiency, Dental Implant Failure Nos
Vitamin D and Serum Calcium Level Insufficiency and Early Dental Implant Failure
In this study there is a trial to investigate whether there is a correlation between early implant failure and low serum levels of vitamin D.
- Trial name
- NCT04906161
- Testing
- Vitamin D and calcium levels
- Where
- 2 sites in Egypt
- Volunteers
- 30 people
- Sponsor
- Ain Shams University
Hypertensive Disorders of Pregnancy
Vitamin D and Hypertensive Disorders of Pregnancy
The purpose of this study is to further investigate the association between vitamin D deficiency/insufficiency and hypertensive disorders of pregnancy by studying the impact of screening for vitamin D deficiency and…
- Trial name
- NCT07017920
- Testing
- Vitamin D Levels measurement
- Volunteers
- 594 people
- Sponsor
- TriHealth Inc.
Vitamin D Deficiency
Effects of Vitamin D Insufficiency in Man
We would like to determine if vitamin D insufficiency exists in different ethnic groups, if it has an effect on bone mass and muscle function, if it has an impact on the function of the cells of the immune system, and if the…
- Trial name
- NCT01848236
- Testing
- Vitamin D2, Vitamin D3
- Where
- United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- University of California, Los Angeles
Kidney Failure, Chronic, Anemia
Cholecalciferol Supplementation for Anemia and Mineral and Bone Disorder in Hemodialysis Patients
The purpose of this study is to determine whether cholecalciferol supplementation decrease the blood concentrations of hepcidin-25 in hemodialysis patients.
- Conditions
- Kidney Failure, Chronic, Anemia, Vitamin D Deficiency, Bone Diseases, Metabolic
- Trial name
- CHAMBER (NCT02214563)
- Testing
- Cholecalciferol, Olive oil
- Where
- 7 sites in Japan
- Volunteers
- 90 people
- Sponsor
- Takayuki Hamano
Kidney Transplantation, Anemia
Correcting Anemia and Native Vitamin D Supplementation in Kidney Transplant Recipients
The purpose of this study is to evaluate the effect of anemia correction and vitamin D supplementation in kidney transplant recipients.
- Conditions
- Kidney Transplantation, Anemia, Vitamin D Deficiency, Renal Insufficiency, Chronic
- Trial name
- CANDLE-KIT (NCT01817699)
- Testing
- High Hb target, cholecalciferol
- Where
- Japan
- Volunteers
- 161 people
- Sponsor
- CANDLE-KIT Trial Study Group
Vitamin D Deficiency, Chronic Renal Insufficiency
Vitamin D and Chronic Renal Insufficiency
Purpose of this study is to investigate the effect of treatment with vitamin D3 (cholecalciferol) compared with placebo in a trial including chronic kidney disease patients with vitamin D deficiency.
- Trial name
- NCT00968877
- Testing
- Cholecalciferol
- Volunteers
- 56 people
- Sponsor
- Odense University Hospital
Type 1 Diabetes, Vitamin D Deficiency/Insufficiency
The Effects of Vitamin D on Glycemic Control and Proinflammatory Markers in Adolescents With T1DM
The investigators are conducting a prospective cross-over study to evaluate the effects of vitamin D supplementation on diabetes control and the pro-inflammatory markers involved in microvascular complications in adolescents with…
- Trial name
- NCT01697228
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 26 people
- Sponsor
- Children's Hospital Los Angeles
Vitamin D Deficiency, Stem Cell Transplant Complications
A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT
Research has suggested that children with sufficient vitamin D levels undergoing hematopoietic stem cell transplant (HSCT) have improved outcomes, including lower incidences of infection and graft-versus-host disease (GVHD), as…
- Conditions
- Vitamin D Deficiency, Stem Cell Transplant Complications, Pediatric Cancer, Blood Disorder
- Trial name
- NCT03176849
- Testing
- Vitamin D3, Standard Vitamin D3 Supplementation
- Where
- United States
- Volunteers
- 49 people
- Sponsor
- Phoenix Children's Hospital
Chronic Kidney Disease Stage 5
Efficacy of Plant-protein Diets in Patients With Chronic Kidney Disease
The purpose of this study is to evaluate the efficacy of plant-protein diets for 12 weeks in patients with advanced chronic kidney disease.
- Trial name
- NCT05350098
- Testing
- Plant-protein Diets, Control Diets
- Where
- Japan
- Volunteers
- 40 people
- Sponsor
- Osaka University
Vitamin D Deficiency, Vitamin D Insufficiency
ALPCO 25(OH) Vitamin D CLIA Kit - Fresh Versus Frozen Serum and Plasma Stability Study
This study evaluates the stability of 25-hydroxyvitamin D [25(OH)D] measurements in human serum and plasma using the ALPCO 25(OH) Vitamin D CLIA Kit.
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers
- Trial name
- NCT07565064
- Testing
- ALPCO 25(OH) Vitamin D CLIA Kit
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- American Laboratory Products Company
Vitamin D Deficiency, Vitamin D Insufficiency
Solius UV Light Source in Improving Serum Levels of 25-hydroxyvitamin D
This is a feasibility interventional study seeking to determine the safety and efficacy of the Solius Photobiologic System in increasing the serum levels of 25(OH)D in a vitamin D deficient/insufficient adult population.
- Trial name
- NCT04865432
- Testing
- UVB treatment
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Boston University
Chronic Kidney Disease, Insulin Resistance
Study of Vitamin D3 Supplementation in Patients With Chronic Kidney Disease
The purpose of this study is to evaluate the impact of vitamin D3 supplementation on the insulin resistance in non-diabetic patients with chronic kidney disease (CKD) stages 3-4, vitamin D deficiency/insufficiency and elevated…
- Conditions
- Chronic Kidney Disease, Insulin Resistance, Vitamin D Deficiency
- Trial name
- VitaD-CKD1 (NCT00893451)
- Testing
- cholecalciferol (TillVal-D)
- Where
- Sweden
- Volunteers
- 24 people
- Sponsor
- Sahlgrenska University Hospital
Chronic Kidney Disease, Vitamin D Deficiency
Vitamin D, Chronic Kidney Disease (CKD) and the Microcirculation
Overall research aims: This study will examine the effect of vitamin D supplementation on the function of the endothelium and microcirculation of patients with chronic kidney disease and vitamin D deficiency.
- Trial name
- NCT00882401
- Testing
- Ergocalciferol (Vitamin D)
- Where
- United Kingdom
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Barts & The London NHS Trust
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Inadequacy in Rural Populations, Evaluation of Correction by Food Supplementation
The purpose of the research is to describe vitamin D levels and bone status in a rural Wisconsin population. It is probable that individuals of varying age and ethnicity require different amounts of D to achieve optimal status.
- Trial name
- NCT00690417
- Testing
- Cholecalciferol (vitamin D3)
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison