Clinical trials: Deficiency, Vitamin D
Pre-Eclampsia
Association Between Vitamin D Deficiency and Preeclampsia: A Case Control Study
To find out if lower levels of vitamin D is more prevalent in preeclamptic women
- Trial name
- NCT02677233
- Volunteers
- 90 people
- Sponsor
- Ain Shams Maternity Hospital
Hypophosphatasia
Safety and Efficacy Study of Asfotase Alfa in Adolescents and Adults With Hypophosphatasia (HPP)
This clinical trial was 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
- NCT01163149
- Testing
- asfotase alfa
- Where
- 3 sites in United States, Canada
- Volunteers
- 19 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
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
Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland
The purpose of this study is to determine the prevalence of vitamin D deficiency among the population of pregnant women receiving prenatal care and giving birth at the investigators' clinic.
- Trial name
- PCVDDPWS (NCT02904720)
- Where
- Switzerland
- Volunteers
- 1,199 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypocalcemia, Vitamin D Deficiency
The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients.
Glucocorticoids are well known for their analgesic, anti-inflammatory, immunomodulatory and anti-emetic effects. Recovery time after thyroid surgery may depend on several factors, such as postoperative pain, nausea and vomiting…
- Conditions
- Hypocalcemia, Vitamin D Deficiency, Postoperative Complications, Postoperative Nausea
- Trial name
- Dexa (NCT04412694)
- Testing
- Dexamethasone oral tablet 8mg (Dexamethasone Krka tablets(8mg), Warsaw, Poland)., Preoparative blood laboratory tests, Postoperative laboratory blood tests at 6 hour
- Where
- Poland
- Volunteers
- 100 people
- Sponsor
- Medical University of Lodz
Primary Hyperparathyroidism, Vitamin D Deficiency
Vitamin D Repletion in Primary Hyperparathyroidism
This study will look at the effect of 2 treatment regimens that contain vitamin D in a six-month treatment trial of patients with PHPT who are vitamin D deficient.
- Trial name
- NCT01306656
- Testing
- 10,000 IU Vitamin D3, Vitamin D
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Columbia University
Vitamin D Deficiency, Renal Failure Chronic Requiring Hemodialysis
Sustainability of Vitamin D Levels After Repletion With Ergocalciferol In Chronic Kidney Disease Stage 5D
The prevalence of vitamin D deficiency increases as kidney function declines. As a result, many hemodialysis patients often have low levels of vitamin D.
- Trial name
- NCT01312441
- Testing
- Ergocalciferol
- Where
- 4 sites in United States
- Volunteers
- 20 people
- Sponsor
- Albany College of Pharmacy and Health Sciences
Vitamin D Deficiency
Assessment of Vitamin D Supplementation and Immune Function
Hypothesis: Volunteers with vitamin D insufficiency (serum 25(OH)D 25-50 nmol/L) given intermediate or high dose vitamin D supplements (2,000 or 5,000 IU per day) will have increased production of anti-bacterial peptides and…
- Trial name
- FL-82 (NCT01399151)
- Testing
- Vitamin D - Treatment 1, Vitamin D - Treatment 2, Vitamin D - Treatment 3
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- USDA, Western Human Nutrition Research Center
X Linked Hypophosphatemia
Burden of Disease and Functional Impairment in XLH
Observational study comprising prospective follow up as well as retrospective chart review in order to evaluate the longitudinal course of the disease in XLH patients with a specific focus on functional impairment, physical…
- Trial name
- IdeFIX (NCT04946409)
- Testing
- no intervention
- Where
- Germany
- Volunteers
- 60 people
- Sponsor
- Wuerzburg University Hospital
Oxidative Stress, Inflammation
Vitamin D, Oxidative Stress and Inflammation in Hemodialysis
Vitamin D deficiency is now considered a global problem in general population, but it seemed to be more prominent in chronic kidney disease (CKD) patients, especially those on regular hemodialysis.
- Conditions
- Oxidative Stress, Inflammation, Vitamin D Deficiency
- Trial name
- NCT05460338
- Testing
- Cholecalciferol
- Where
- Egypt
- Volunteers
- 25 people
- Sponsor
- Ain Shams University
Postmenopausal, Vitamin D Deficiency
Study to Observe the Capability to Absorb Calcium as an Measure of Adequate Levels of Vitamin D
The purpose of this study is to determine the capability to absorb calcium as a measure of the sufficient levels of Vitamin D. Calcium absorption will be measured at baseline and after vitamin D3, by dual calcium isotope…
- Trial name
- NCT01119378
- Testing
- Dual isotope technique
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Winthrop University Hospital
Vitamin D Deficiency
The Role of Vitamin D in Female Reproductive Tract Immunity
The purpose of this study is to assess the impact of approximately 8 weeks of Vitamin D (VitD) and calcium supplementation, using daily versus weekly supplementation regimens, on female reproductive tract immunity.
- Trial name
- NCT02186535
- Testing
- Vitamin D and Calcium
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- CONRAD
Vitamin D Deficiency, Pre Eclampsia
Evaluation of the Effectiveness of Vitamin D Supplementation to Pregnant Women and Their Infants in Pakistan.
Vitamin D deficiency is wide spread in South Asian population and is contributing to burden of disease in this region including Pakistan.
- Conditions
- Vitamin D Deficiency, Pre Eclampsia, Stillbirths, Low Birth Weight
- Trial name
- NCT01229189
- Testing
- Vitamin D
- Where
- Pakistan
- Volunteers
- 460 people
- Sponsor
- Aga Khan University
Asthma, Vitamin D Deficiency
Rapid vs Maintenance Vitamin D Supplementation in Deficient Children With Asthma to Prevent Exacerbations.
The role of vitamin D in respiratory health remains uncertain. Whether vitamin D reduces clinically important exacerbations of childhood asthma remains uncertain.
- Trial name
- NCT01395589
- Testing
- Vitamin D
- Where
- Qatar
- Volunteers
- 597 people, healthy volunteers welcome
- Sponsor
- Hamad Medical Corporation
Vitamin D Deficiency, Surgery
Effects of Stoss Therapy of Vitamin D3 on Peri-operative Outcomes in Patients Receiving General Surgery
To investigate whether preoperative supplement with high-dose vitamin D3 can reduce the perioperative risk and enhance recovery
- Trial name
- NCT05650268
- Testing
- Vitamin D3, 95% MCT
- Sponsor
- National Taiwan University Hospital
Type 2 Diabetes
Relationship Between Insulin Resistance and Vitamin D in Type 2 Diabetes Mellitus (DM)
The primary aim of the study is to evaluate the association between vitamin D levels and triglyceride-glucose index as a marker of insulin resistance in patients with type 2 DM.
- Trial name
- DM (NCT07467161)
- Volunteers
- 165 people
- Sponsor
- Assiut University
Renal Insufficiency,Chronic, Dietary Intake Patterns
Strategies for Proactive Health in People With Kidney Function Decline
This prospective cohort study aims to investigate how kidney function decline affects multiple body systems and how personalized nutrition can help maintain health and slow disease progression.
- Conditions
- Renal Insufficiency,Chronic, Dietary Intake Patterns, Malnutrition, Frailty
- Trial name
- NCT07245186
- Where
- China
- Volunteers
- 1,800 people
- Sponsor
- Huashan Hospital
Locally Advanced Cervical Cancer, Vitamin D Concentration
Vitamin D Status and Clinical Outcomes in Locally Advanced Cervical Cancer
Background. Definitive chemoradiotherapy represents the standard therapeutic approach for the management of locally advanced cervical cancer.
- Trial name
- CERVITAL (NCT07743918)
- Testing
- Pretreatment Vitamin D Assessment in Serum and Cervical Lavage Fluid
- Where
- Serbia
- Volunteers
- 100 people
- Sponsor
- University of Kragujevac
Cystic Fibrosis, Vitamin D Deficiency
Vitamin D3 for the Treatment of Low Vitamin D in Cystic Fibrosis
Vitamin D deficiency is common in cystic fibrosis. Vitamin D deficiency frequently persists despite aggressive treatment with ergocalciferol, a vitamin D preparation also known as vitamin D2.
- Trial name
- NCT00762918
- Testing
- cholecalciferol
- Sponsor
- Children's Hospital of Philadelphia
Vitamin D Deficiency
The Effect of Fat on Vitamin D Absorption
The purpose of this study is to evaluate the absorption of dietary supplement of vitamin D3 (cholecalciferol), through the variation of 25 (OH) D levels, as the fat content of the meal associated with the administration of the…
- Trial name
- VITD_100484 (NCT01519986)
- Testing
- Vitamin D3
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Federal University of Rio Grande do Sul
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