Clinical trials: Vitamin D Deficiency, completed
Secondary Hyperparathyroidism, Chronic Kidney Disease Mineral and Bone Disorder
Impact of Parathyroidectomy on Cardiovascular Calcification in Dialysis-dependent Patients
This is a prospective cohort study aimed to evaluate change of cardiovascular calcification after parathyroidectomy in patients with end-stage renal disease on dialysis compared with control group on conservative treatment.
- Conditions
- Secondary Hyperparathyroidism, Chronic Kidney Disease Mineral and Bone Disorder, Vascular Calcification, Dialysis
- Trial name
- NCT03937349
- Where
- Russia
- Volunteers
- 63 people
- Sponsor
- Saint Petersburg State University, Russia
Asthma, Vitamin D Deficiency
The Effect of Vitamin D Replacement on Airway Reactivity, Allergy and Inflammatory Mediators in Exhaled Breath Condensate in Vitamin D Deficient Asthmatic Children
Research Title: The effect of vitamin D replacement on airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in vitamin D deficient asthmatic children.
- Trial name
- NCT01287455
- Testing
- Vitamin D3 as "BABY D3"
- Where
- Israel
- Volunteers
- 83 people
- Sponsor
- Rambam Health Care Campus
Vitamin D Deficiency, Insulin Resistance
Vitamin D, Insulin Resistance, and Cardiovascular Disease
In recent years, vitamin D has been shown not only to be important for bone and calcium metabolism but also for homeostasis of critical tissues involved in vascular disease in patients with diabetes.
- Conditions
- Vitamin D Deficiency, Insulin Resistance, Type 2 Diabetes Mellitus, Cardiovascular Disease
- Trial name
- NCT00736632
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 125 people
- Sponsor
- Washington University School of Medicine
Aging, Vitamin Deficiency
Swiss Study on Vitamin D and Calcium in Nursing Homes
Residents of nursing homes are endangered by malnutrition and vitamin D deficiency. Our study checks compliance with Swiss federal recommendations on vitamin D and calcium supplementation among residents of a Swiss nursing home.
- Trial name
- NCT01653353
- Testing
- peer physician-applied recommendation to the physicians
- Where
- Switzerland
- Volunteers
- 71 people
- Sponsor
- University of Zurich
Osteomalacia
Serum FGF-23 and Vitamin D Deficiency
We aimed to determine the effect of vitamin D replacement therapy on serum FGF-23 concentrations in vitamin D deficient women and to compare the FGF-23 concentrations of vitamin D deficient patients with healthy subjects and…
- Trial name
- NCT01102751
- Where
- Turkey (Türkiye)
- Volunteers
- healthy volunteers welcome
- Sponsor
- Istanbul University
Anemia, Hemodialysis Complication
Cholecalciferol Supplementation in Hemodialysis Patients
This is prospective single-blind randomized study, in Ain Shams University hospital) in Egypt, to assess the impact of Cholecalciferol on Anemia status in regular hemodialysis outpatients
- Conditions
- Anemia, Hemodialysis Complication, Vitamin D Deficiency
- Trial name
- NCT05922696
- Testing
- Cholecalciferol
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Ain Shams University
Cystic Fibrosis
Comparison of Absorption of Vitamin D in Cystic Fibrosis
The investigators predict that a powder pill form of vitamin D will be more effectively absorbed than an oil form of vitamin D in people diagnosed with Cystic Fibrosis.
- Trial name
- NCT01880346
- Testing
- Vitamin D Powder, Vitamin D Oil
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Emory University
Stevens-Johnson Syndrome, Drug Reaction With Eosinophilia and Systemic Symptom
Vitamin D Levels in Non-immediate Drug Hypersensitivity Case-control Study
Serum vitamin D levels in drug-induced non-immediate reactions
- Conditions
- Stevens-Johnson Syndrome, Drug Reaction With Eosinophilia and Systemic Symptom, Maculopapular Exanthem, Vitamin D Deficiency
- Trial name
- NCT06263140
- Where
- Thailand
- Volunteers
- 120 people
- Sponsor
- Chulalongkorn University
Obesity and Overweight, Nutritional Deficiency
Nutritional Health and Satisfaction After Bariatric Surgery: a Five-Year Retrospective Study
A retrospective study analyzing long-term outcomes of metabolic bariatric surgery (MBS) with a focus on weight loss, nutritional deficiencies, and patient satisfaction over a five-year follow-up.
- Conditions
- Obesity and Overweight, Nutritional Deficiency, Bariatric Surgery
- Trial name
- NCT06664580
- Testing
- Metabolic Bariatric Surgery Procedures
- Volunteers
- 249 people
- Sponsor
- San Raffaele Telematic University
Vitamin D Deficiency
Vitamin Deficiency in Immigrants, a Treatment Study
The purpose of this study is to determine the efficacy of different doses of vitamin D in persons, immigrated to Sweden from Middle East or Africa, with decreased S vitamin D.
- Trial name
- VIDI2 (NCT01419119)
- Testing
- Cholecalciferol high dose at Vitamin D deficiency, Cholecalciferol median dose at Vitamin D insufficiency, Cholecalciferol low dose at Vitamin D deficiency
- Where
- Sweden
- Volunteers
- 160 people
- Sponsor
- Umeå University
Nutritional Rickets
Role of Calcium And Vitamin D In Nutritional Rickets And It's Management
Rickets, a common nutritional disorder, is usually considered to be due to vitamin D deficiency. However, in the last few decades many studies have shown that in tropical countries, with abundance of sunshine, calcium deficiency…
- Trial name
- ROCAVINR (NCT01578434)
- Testing
- Vitamin D, Calcium Carbonate, Vitamin D and Calcium
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Lady Hardinge Medical College
Nutritional Deficiency
The Use of the 25 (OH) D Saliva Test as a Substitute for the 25 (OH) D Serum Test in Healthy People
Routine examination of vitamin D levels is carried out by checking serum 25 (OH)D levels, which indicate circulating vitamin D levels.
- Trial name
- NCT04655664
- Testing
- not currently consumed vitamin D supplements regularly, consumed vitamin D supplements regularly
- Where
- Indonesia
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Universitas Sumatera Utara
Renal Osteodystrophy
Low Magnitude Mechanical Stimuli Effects on Bone Structure in ESRD
The proposed 6 month pilot and feasibility randomized trial will evaluate LMMS as an anabolic stimulus to bone in 30 adults on maintenance hemodialysis.
- Trial name
- NCT00364234
- Testing
- Low magnitude mechanical stimuli
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Vitamin D Deficiency, Cystic Fibrosis
Vitamin D and Microbiota in Cystic Fibrosis
The objective of this study is to assess the effects of a high-dose vitamin D3 on the composition of gut and lung microbiota in adolescents and adults with cystic fibrosis who are vitamin D deficient.
- Trial name
- NCT02589444
- Testing
- High-Dose Vitamin D3, Stool Sample, Sputum Sample
- Where
- United States
- Volunteers
- 41 people
- Sponsor
- Emory University
Vitamin D Deficiency, Obesity
D-tecting Disease - From Exposure to Vitamin D During Critical Periods of Life
Vitamin D deficiency is common among otherwise healthy pregnant women and may have consequences for them as well as the early development and long-term health of their children.
- Conditions
- Vitamin D Deficiency, Obesity, Diabetes Mellitus, Pre-Eclampsia
- Trial name
- D-tect (NCT03330301)
- Testing
- D-tect
- Where
- Denmark
- Volunteers
- 222,776 people
- Sponsor
- Bispebjerg Hospital
Disorder of Bone Density and Structure, Unspecified, Vitamin D Deficiency
Nutritional Deficiencies Preventive Treatment Prior to Laparoscopic Sleeve Gastrectomy
This study will examine the effect of providing a structured program of daily nutritional supplements for a 8 weeks of intervention prior to Sleeve Gastrectomy bariatric surgery on bone mass density status and formation of…
- Trial name
- LSG (NCT02483026)
- Testing
- Multi vitamin, vitamin D
- Where
- Israel
- Volunteers
- 62 people
- Sponsor
- Hadassah Medical Organization
Vitamin D Deficiency
Comparison of Maternal and Neonatal Vitamin D Levels in Term Neonates With and Without Early Onset Sepsis
Neonatal sepsis is a clinical syndrome characterized by signs and symptoms of infection with or without accompanying bacteremia in the first month of life which is still an important cause of morbidity and mortality.
- Trial name
- NCT02019836
- Testing
- Determining maternal and neonatal vitamin D levels
- Where
- Turkey (Türkiye)
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Kanuni Sultan Suleyman Training and Research Hospital
Nutritional Rickets
Vitamin D and Genetics in Nutritional Rickets
The purpose of this study is: 1. To compare the response of rickets to calcium with and without vitamin D. 2. To assess whether vitamin D increases calcium absorption in calcium deficiency rickets. 3.
- Trial name
- NCT00949832
- Testing
- Vitamin D + Calcium, Calcium, Vitamin D2
- Where
- Nigeria
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Epilepsy
Effect of Three Different Doses of Oral Cholecalciferol on 25-Hydroxyvitamin D Changes Among Epilepsy Patients With Hypovitaminosis D
To characterize the effect of three different doses of vitamin D3 supplementation on serum 25-hydroxyvitamin D (25(OH)D) changes in epilepsy patients receiving enzyme-inducing antiepileptic drugs (EIAEDs) versus patients…
- Trial name
- NCT02890823
- Testing
- Cholecalciferol
- Volunteers
- 210 people
- Sponsor
- Chulalongkorn University
Sickle Cell Disease, Vitamin D Deficiency
High Dose Vitamin D Supplementation in Children With Sickle Cell Disease
Suboptimal vitamin D status is well reported in sickle cell disease (SCD) patients and associated with a negative impact on health-related quality of life (HRQL).
- Conditions
- Sickle Cell Disease, Vitamin D Deficiency, Health Related Quality of Life, Hand Grip Strength
- Trial name
- NCT06274203
- Testing
- Vitamin D3
- Where
- Egypt
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Zagazig University