Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency, Hepatocellular Carcinoma
The Effect of Vitamin D Repletion in Patients With Hepatocellular Carcinoma on the Orthotopic Liver Transplant List
The purpose of this study is to investigate the effect of two different doses of vitamin D3 (2000 IU vs. 4000 IU) on serum 25-hydroxyvitamin D (25OHD) levels in patients with hepatocellular carcinoma on the liver transplant list.
- Trial name
- NCT01575717
- Testing
- Vitamin D3 4000 IU, Vitamin D3 2000 IU
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Andrea Branch
Obesity, Vitamin D Deficiency
Effect of Exercise on Vitamin d in Obese
The aim of the current study was to investigate the effect of exercise-induced lipolysis on vitamin D status in obese children. Two types of exercises that have different effects on lipolysis were used.
- Trial name
- NCT05066490
- Testing
- Endurance exercise, Resistance exersises.
- Where
- Saudi Arabia
- Volunteers
- 30 people
- Sponsor
- Taif University
Bronchial Asthma, Vitamin D Deficiency
Vitamin D Status and Asthma Control, Pulmonary Function, and Oxidative Stress in Adults With Bronchial Asthma
Asthma is a chronic inflammatory airway disease associated with variable airflow limitation and persistent respiratory symptoms.
- Conditions
- Bronchial Asthma, Vitamin D Deficiency, Pulmonary Function Impairment, Oxidative Stress
- Trial name
- VD-ASTHMA (NCT07733635)
- Volunteers
- 134 people
- Sponsor
- Sinai University
Crohn Disease, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease
Background: It remains uncertain whether vitD3 supplementation is beneficial for remission of Crohn's disease (CD). The influence of vitD3 supplementation on Infliximab (IFX) efficacy was retrospectively analyzed in Chinese CD…
- Conditions
- Crohn Disease, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04606017
- Testing
- Caltrate Pill
- Where
- China
- Volunteers
- 70 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Vitamin D Deficiency
Vitamin D Raising and Maintaining Blood Serum 25(OH)D3 Levels
Analyze the amount of change in blood serum Vitamin D levels in patients of 3 different dosing groups and how their levels change over a 3 month period of time.
- Trial name
- VitD (NCT03099759)
- Testing
- Vitamin D
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Vitamin D Deficiency, Covid19
Nutrition, Immunity, and Covid-19 in Obese People
The increased risk of transmission of COVID-19 infection causes the incidence of death in health workers to escalate. It requires further research on risk factors and intervention in health worker professionals, especially on…
- Conditions
- Vitamin D Deficiency, Covid19, Overweight and Obesity, Immune Deficiency
- Trial name
- NICO (NCT04979065)
- Testing
- Probiotics, Vitamin D
- Where
- 4 sites in Indonesia
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
Type 2 Diabetes
Vitamin D Inadequacy is Associated With Incidence of Type 2 Diabetes
Emerging evidence suggests that vitamin D [25-hydroxyvitamin D; 25(OH)D] may play a role in the etiology of type 2 diabetes. Vitamin D levels are lower in those with type 2 diabetes and impaired glucose tolerance (IGT) compared…
- Trial name
- NCT01508481
- Where
- South Korea
- Volunteers
- 1,500 people, healthy volunteers welcome
- Sponsor
- Seoul National University Bundang Hospital
Vitamin D Deficiency, Vitiligo
Synergistic Effect of Vitamin D Supplementation in Patients With Vitiligo and Vitamin D Deficiency
This prospective, randomized, controlled study was approved by the Institutional Review Board of Hallym University Kangnam Sacred Heart Hospital (IRB no. 2018-04-017).
- Trial name
- NCT05364567
- Testing
- cholecalciferol (vitamin D3), Phototherapy
- Where
- South Korea
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Hallym University Kangnam Sacred Heart Hospital
Hypophosphatasia
Safety and Efficacy Study of ENB-0040 in Juvenile Patients With Hypophosphatasia (HPP)
This Clinical Trial is being conducted to study Hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT00894075
- Testing
- ENB-0040
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Secondary Hyperparathyroidism
Characterization of Hyperparathyroidism and Vitamin D Deficiency in Obesity
Obese persons are known to have elevated levels of parathyroid hormone (PTH) and low levels of vitamin D. These hormones are important in regulation of the body's calcium stores and bone health.
- Conditions
- Vitamin D Deficiency, Secondary Hyperparathyroidism, Obesity
- Trial name
- NCT00288873
- Testing
- Ergocalciferol, Cholecalciferol
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Weill Medical College of Cornell University
Vitamin D Deficiency
Treatment Study of Vitamin D Deficiency in Adolescents
To compare the efficacy of two high dose vitamin D3 regimens (5,000 IU daily vs. 50,000 IU weekly) used clinically for the treatment of vitamin D deficiency versus a low dose of vitamin D3 used for supplementation (1,000 IU…
- Trial name
- NCT01784029
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 183 people, healthy volunteers welcome
- Sponsor
- Montefiore Medical Center
Vitamin D Deficiency
Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants
The purpose of this research study is to compare the effects of higher dose vitamin D with commonly recommended dose in pregnant women to see which is better in achieving and/or maintaining sufficient vitamin D blood levels…
- Trial name
- PA 03-103 (NCT00610688)
- Testing
- Prenatal Vitamin, Cholecalciferol (Vitamin D3)
- Where
- 2 sites in United States, United Arab Emirates
- Volunteers
- 192 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Vitamin D Deficiency Defined as Serum 25OHD < 75 Nmol/l or 30ng/ml, Preeclampsia
Vitamin D and Preeclampsia
Hypothesis : Vitamin D serum concentration is decreased in the first trimester in pregnant women who will develop preeclampsia in the second or third trimester compare to a control group Primary purpose : To determine the vitamin…
- Conditions
- Vitamin D Deficiency Defined as Serum 25OHD < 75 Nmol/l or 30ng/ml, Preeclampsia, Neonatal Hypercalcemia, Pregnancy
- Trial name
- FEPED (NCT01648842)
- Where
- France
- Volunteers
- 3,173 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Hypocalcemia, Rickets
Studies With 1,25-Dihydroxycholecalciferol
Vitamin D in the diet undergoes changes in the liver and kidneys to several forms. Patients suffering from disorders with Vitamin D resistance are unable to absorb calcium from food.
- Trial name
- NCT00001151
- Testing
- 1,25-Dihydroxycholecalciferol
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Colorectal Cancer, Vitamin D Deficiency
Vitamin D Supplementation Study
Patients with colorectal cancer will be recruited to undergo vitamin D supplementation in the peri-operative period. Vitamin D levels (25OHD) will be measured to assess response to supplementation.
- Trial name
- NCT05506696
- Testing
- Fultium
- Where
- United Kingdom
- Volunteers
- 122 people
- Sponsor
- University of Edinburgh
Vitamin D Deficiency, Cardiomyopathies
Can Vitamin D Reduce Heart Muscle Damage After Bypass Surgery?
Background and study aim: Heart diseases are among the most common causes of death worldwide. A large proportion of deaths are caused by heart attacks (myocardial infarction), where blood flow to the heart is reduced resulting in…
- Conditions
- Vitamin D Deficiency, Cardiomyopathies, Apoptosis, Inflammation
- Trial name
- NCT04323852
- Testing
- Vitamin D
- Where
- Iran
- Volunteers
- 70 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Vitamin d Deficiency, Central Retinal Vein Occlusion
Vitamin D Levels in Patients With Central Retinal Vein Occlusion- a Prospective Controlled Study
Retinal vein occlusion (RVO) is a common vascular disease of the eye. Studies have shown that the risk of venous thrombosis is higher in winter so even concerning RVO.
- Trial name
- NCT01793181
- Where
- Sweden
- Volunteers
- 216 people
- Sponsor
- St. Erik Eye Hospital
Epilepsy, Vitamin D Deficiency
Vitamin D Supplementation to Prevent Vitamin D Deficiency for Children With Epilepsy
To determine the maintenance dose of vitamin D supplementation required for children with epilepsy to maintain normal vitamin D level.
- Trial name
- NCT03536845
- Testing
- Vitamin D 3
- Where
- Saudi Arabia
- Volunteers
- 116 people
- Sponsor
- King Saud University
Vitamin D Deficiency, 25-Hydroxyvitamin D3 Deficiency, Selective
Effect of Vitamin D3 Supplementation in Children From 12 to 30 Months of Age.
Background Vitamin D (VD) is essential for calcium absorption, bone health and growth in children. In a national representative sample authors found mean serum concentration of 25-Hydroxi-Vitamin-D (25-OH-D) of 59 nmol/L, in…
- Trial name
- NCT03544671
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Instituto Nacional de Salud Publica, Mexico
Total Thyroidectomy, Hypocalcemia
Prevention of Postoperative Hypocalcemia of Oral Vitamin D Supplementation Before Total Thyroidectomy
The hypocalcemia after total thyroidectomy is one of common surgical complications. It may be asymptomatic, but patients can complain of dysfunction around the mouth or extremities, stiffness or convulsion in severe cases.
- Conditions
- Total Thyroidectomy, Hypocalcemia, Vitamin D Deficiency
- Trial name
- NCT05216419
- Testing
- Cholecalciferol
- Where
- 2 sites in South Korea
- Volunteers
- 108 people
- Sponsor
- Seoul National University Hospital
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