Clinical trials: Vitamin D Deficiency, completed
Infant, Very Low Birth Weight, Calcium Deficiency
Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2
This study is to determine the amount of vitamin D required for a very low birth weight infant to reach vitamin D sufficiency and achieve optimal calcium health and bone growth.
- Conditions
- Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
- Trial name
- NCT01363167
- Testing
- 400 IU Cholecalciferol- Vitamin D Daily
- Where
- 2 sites in United States
- Volunteers
- 68 people
- Sponsor
- Medical University of South Carolina
Morbid Obesity, Vitamin D Deficiency
Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery Patients
Bariatric surgery patients tend to have malabsorption of many micronutrients such as B12, Iron and vitamin D postoperative. So in this study, a monthly high dose of vitamin D3 is giving to patients with their routine supplements…
- Trial name
- NCT02477956
- Testing
- vitamin D3 (Replesta), vitamin D
- Where
- United States
- Volunteers
- 31 people
- Sponsor
- Texas Tech University
Secondary Hyperparathyroidism, Chronic Kidney Disease
Vitamin D Deficiency in Chronic Kidney Disease (CKD) Patients
This is an open label, single center, randomized, active comparator controlled study, comparing the effects of vitamin D replacement using oral ergocalciferol versus paricalcitol on parathyroid hormone (PTH) levels in patients…
- Trial name
- NCT00958451
- Testing
- Paricalcitol, Ergocalciferol
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- Salem Veterans Affairs Medical Center
Ckd-Mbd
Relationship Between Cardiopulmonary Exercise Testing and Ca-P in Chronic Kidney Disease (CKD)
Reductions in exercise capacity associated with exercise intolerance augment cardiovascular disease risk and predict mortality in chronic kidney disease.
- Trial name
- NCT04013139
- Testing
- CPET
- Where
- Iran
- Volunteers
- 200 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Vitamin D Deficiency, Depressive Symptoms
Supplementation and Depressive Symptomatology Incidence Among Saudi Arabian Adults
The goal of this randomized controlled trial is to explore the relationship between Vitamin D supplementation and depressive symptomatology in Saudi Arabian Population.
- Trial name
- NCT05916053
- Testing
- Vitamin D supplementation
- Where
- Saudi Arabia
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- Lebanese American University
Heart Failure, Vitamin D Deficiency
The Effect of Calcium and Vitamin D in Patients With Heart Failure
Previous studies have shown high proportions of vitamin D deficiency among elderly in Denmark. Vitamin D is important for muscular function.
- Trial name
- KarViDII (NCT00497900)
- Testing
- Vitamin D
- Where
- Denmark
- Volunteers
- 45 people
- Sponsor
- Hvidovre University Hospital
Vitamin D Deficiency, Preterm Infants
Vitamin D Supplementation for Extremely Preterm Infants
The study hypothesis states that giving early enteral Vitamin D supplementation to preterm infants will decrease respiratory morbidity in extremely preterm infants.
- Conditions
- Vitamin D Deficiency, Preterm Infants, Bronchopulmonary Dysplasia
- Trial name
- NCT01600430
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- University of Alabama at Birmingham
X-linked Hypophosphatemic Rickets/Osteomalacia
A Study of KRN23 in Subjects With X-linked Hypophosphatemic Rickets/Osteomalacia
The objective of this study is to assess the safety and tolerability of KRN23 after a single subcutaneous (SC) administration in subjects with X-linked hypophosphatemic rickets/osteomalacia (XLH) in Japan or Korea.
- Trial name
- NCT02181764
- Testing
- KRN23
- Where
- 2 sites in Japan, South Korea
- Volunteers
- 15 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Hidradenitis Suppurativa, Mediterranean Diet
Nutritional Status and Hidradenitis Suppurativa (Acne Inversa)
Hidradenitis suppurativa (HS) is a chronic inflammatory, debilitating skin disorder. The exacerbating factors of HS include nutrition and adiposity.
- Conditions
- Hidradenitis Suppurativa, Mediterranean Diet, Body Composition, Vitamin D Deficiency
- Trial name
- NutriHidra (NCT03683238)
- Testing
- Mediterranean Diet
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- Federico II University
Hypovitaminosis D
Vitamin D and Adipose Tissue: a Complex Relationship
The goal of this observational study is to verify the role of adipose tissue in determining the vitamin D serum level after monthly oral administration in subjects with vitamin D deficiency.
- Trial name
- ADIPOVITAD (NCT05957692)
- Where
- Italy
- Volunteers
- 58 people
- Sponsor
- Azienda Ospedaliera Universitaria Integrata Verona
Vitamin-D Insufficiency
Seasonal Variations in Serum 25-hydroxy Vitamin-D Levels in a Swedish Cohort
The purpose of this study was to study seasonal inter-individual and intra-individual variations in S-25(OH)D and to explore parameters associated with S-25-OHD in healthy Swedish adults.
- Trial name
- NCT02136407
- Where
- Sweden
- Volunteers
- 615 people, healthy volunteers welcome
- Sponsor
- Sahlgrenska University Hospital
Vitamin D Status
Hypovitaminosis D Prediction Score
Vitamin D has effects on many tissues, and hypovitaminosis D is frequent. In a French survey conducted among 1587 adults, vitamin D insufficiency (<30ng/ml) has been reported in 80% of subjects, including 43% with moderate…
- Trial name
- SCOPYD (NCT02822651)
- Testing
- Blood sampling, self-administered questionnaire
- Where
- France
- Volunteers
- 2,592 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
Insulin Sensitivity
Effect of Vitamin D Replacement on Insulin Sensitivity
Healthy subjects with low Vitamin D levels will be randomly assigned to either Vitamin D replacement or placebo for a period of 8 weeks.
- Trial name
- NCT01268111
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Texas Tech University Health Sciences Center
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
Autosomal Dominant Hypophosphatemic Rickets
Iron Therapy for Autosomal Dominant Hypophosphatemic Rickets: A Pilot Project.
The purpose of the study is to gain a better understanding of the effect of iron on fibroblast growth factor 23 (FGF23) in the inherited disorder, autosomal dominant hypophosphatemic rickets (ADHR).
- Trial name
- NCT02233322
- Testing
- Iron
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Indiana University
Vitamin D Deficiency, Injuries
Vitamin D Status Among Competitive Female Gymnast and Swimmers After Winter Time
As indoor athletes, competitive gymnasts and swimmers can face the problem of a potential vitamin D deficiency. In the last decades, indoor sports participants have been faced with the problem of an institutionalized lifestyle…
- Conditions
- Vitamin D Deficiency, Injuries, Cardiovascular Risk Factor, Nutritional Deficiency
- Trial name
- NCT03584256
- Where
- Slovenia
- Volunteers
- 31 people
- Sponsor
- University of Ljubljana
Stage 2-5 Chronic Kidney Disease, Predialysis
Vitamin D Insufficiency and Deficiency in Chronic Kidney Disease (CKD) Patients in Singapore
Vitamin D insufficiency and deficiency is common in chronic kidney disease (CKD) patients and is associated with elevated parathyroid hormone (PTH) concentration and mineral and bone disorder (MBD).
- Trial name
- NCT01102179
- Where
- Singapore
- Volunteers
- 196 people
- Sponsor
- National University of Singapore
Methicillin Resistant Staphylococcus Aureus, Vitamin D3 Deficiency
Efficacy Study of Vitamin D Supplementation to Meticillin Resistant Staphylococcus Aureus (MRSA) Carriers
The purpose of this study is to treat persistent MRSA carriers with vitamin D supplementation during a 12 month to see if the number of MRSA positive patients can be reduced.
- Trial name
- D-STAPH (NCT02178488)
- Testing
- Cholecalciferol
- Where
- 2 sites in Sweden
- Volunteers
- 60 people
- Sponsor
- Peter Bergman
Hypovitaminosis D, Obesity
Hypovitaminosis D and "Metabolic" Inflammatory Status in Patients With Obesity
Since obesity is related to systemic chronic inflammatory status and hypovitaminosis D, the study aimed to assess the incidence of hypovitaminosis D in obese patients and the correlations between vitamin D levels, inflammation…
- Trial name
- ViDO (NCT06115356)
- Testing
- Vitamin D Plasma Level, Bioelectrical Impedance Analysis (BIA) technique, Ferritin
- Where
- Italy
- Volunteers
- 208 people
- Sponsor
- University of Trieste
Infertility
Vitamin D Supplementation in Vitamin Deficient Women Undergoing IVF Cycles: Does it Affect the Fertility Outcome?
The aim of this study is to evaluate the effect of treatment of vitamin D deficiency (through vitamin D supplementation for 8 weeks before the start of In-vitro fertilization (IVF) on the success of IVF cycles.
- Trial name
- NCT03209856
- Testing
- Vitamin D
- Where
- Egypt
- Volunteers
- 200 people
- Sponsor
- Cairo University