Clinical trials: Deficiency of Vitamin D3
Vitamin D Deficiency, Covid19
Baseline Vitamin D Deficiency and COVID-19 Disease Severity
It is known that vitamin D has been found to decrease incidence of viral respiratory infections, as well as have effects on multiple cytokines involved in immunomodulation and the bradykinin/renin-angiotensin system.
- Trial name
- NCT04628000
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Parkview Medical Center
Metabolic Bone Disease, Osteopenia
A Study to Assess Metabolic Bone Disease of Prematurity Using an Acoustic Method
The goal of this project is to develop a new noninvasive ultrasound based technique, called vibro-acoustic analysis (VAA), for evaluation of infant bone health with particular application in assessment of bone health in premature…
- Conditions
- Metabolic Bone Disease, Osteopenia, Neonatal Rickets
- Trial name
- NCT04752098
- Testing
- Vibro-acoustic analysis (VAA), based on ultrasound radiation force
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Mayo Clinic
Hypovitaminosis D, Deficiency of Micronutrients
Investigation of Vitamin D3 Enriched, Reduced-fat Yellow Cheese Efficacy to Prevent Vitamin D Deficiency
The primary aim of the current study was to investigate whether the consumption of vitamin D3 enriched, reduced-fat yellow cheese can counterbalance the expected decrease in serum 25-hydroxyvitamin D concentration during winter…
- Trial name
- NCT02543671
- Testing
- vitamin D3 enriched, reduced-fat yellow cheese, plain (non-fortified) reduced-fat yellow cheese
- Where
- Greece
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Harokopio University
Vitamin D Deficiency, Alveolar Bone Loss
Vit D and Post-extractive Bone Turnover
The aims of the study was to correlate the extent of the dimensional alveolar bone changes after tooth extraction and contextual guided bone regeneration with serum vit D levels in 14 patients.
- Conditions
- Vitamin D Deficiency, Alveolar Bone Loss, Alveolar Bone Resorption
- Trial name
- NCT06412705
- Testing
- Tooth extraction, guided bone regeneration and dental implant
- Where
- Italy
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Studio Odontoiatrico Associato Dr. P. Cicchese e L. Canullo
Hypophosphatemic Rickets, X-Linked Dominant
Effect of Cinacalcet on Parathyroid Hormone Secretion in Children and Adolescents With Hypophosphatemic Rickets
This study will measure the effect of cinacalcet (Sensipar) on parathyroid hormone (PTH) secretion in children and adolescents with hypophosphatemic rickets (XLH).
- Trial name
- NCT00195936
- Testing
- Cinacalcet
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Children's Mercy Hospital Kansas City
Age-related Macular Degeneration, Vitamin D Deficiency
Omega 3 and Vitamin D Dosage in a Population With Moderate to High Risk of AMD
Objectives: The investigators conducted a prospective study in Belgium with the objective to determine the proportion of subjects identified at moderate-to-high risk for AMD, based on the STARS® questionnaire, in need of…
- Trial name
- OVID-AMD (NCT04482465)
- Testing
- blood sample
- Where
- Belgium
- Volunteers
- 50 people
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Vitamin D Deficiency
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D Daily Supplements on Active Periodontal Therapy With Stage II Grade B Periodontitis Patients
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D daily Supplements on Active Periodontal Therapy with Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06654063
- Testing
- non-surgical periodontal therapy (SRP), non-surgical periodontal therapy (SRP)+ Omega-3, non-surgical periodontal therapy (SRP)+ Vitamin D
- Where
- Egypt
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Cairo University
Polycystic Ovary Syndrome, Insulin Resistance
Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome (PCOS) is a common endocrine disorder in reproductive age women, which causes disordered follicle growth and ovulation resulting in infertility.
- Conditions
- Polycystic Ovary Syndrome, Insulin Resistance, Vitamin D Deficiency, Obesity
- Trial name
- EMDPCOS (NCT03652987)
- Where
- United Kingdom
- Volunteers
- 300 people
- Sponsor
- St George's, University of London
Vitamin d Deficiency
Effects of Vitamin D on Cardiovascular Health in Black Women
The goal of this clinical trial is to understand the effects of oral vitamin D3 supplementation on various cardiovascular risk factors in generally healthy, young adult black women who are vitamin D deficient or insufficient at…
- Trial name
- NCT05656742
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Delaware
Serum 25-hydroxyvitamin D Concentrations (25OHD)
The BreaD Study - Bio-availability of D2 Vitamin Present in Bread
Vitamin D3 is synthesized in skin exposed to ultraviolet-B-irradiation of sunlight. However, in Northern Europe, including Finland, exposure to sunlight is limited or non-existent in winter.
- Trial name
- BreaD_ODIN (NCT02525003)
- Testing
- Vitamin D2, Vitamin D3, Vitamin D2 fortified bread
- Where
- Finland
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- University of Helsinki
Vitamin D Deficiency, Glucose Intolerance
Impact of Correction of Vitamin D Deficiency in Oxidative Stress in Patients With Prediabetes (VICOX)
The investigators aim to determine the effect of the correction of vitamin D in vitamin D deficient patients (<15ng/ml) in oxidative stress and insulin resistance in patients with impaired glucose tolerance.
- Conditions
- Vitamin D Deficiency, Glucose Intolerance, Oxidative Stress, Insulin Resistance
- Trial name
- VICOX (NCT03356873)
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 31 people
- Sponsor
- Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
Healthy Humans
Immune and Metabolic Effects of Vitamin D Supplementation in Healthy Humans
In this placebo controlled study the investigators aim to investigate the effect of a 3 month vitamin D supplementation on parameters of the immune, endocrine and metabolic system in healthy women and men. Vitamin D.
- Trial name
- NCT01248442
- Testing
- Cholecalciferol
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Hyperparathyroidism; Secondary, Renal
Efficacy and Safety of Cinacalcet in Ca, P and iPTH Levels in Patients With Mild, Moderate and Severe SHPT
1. To evaluate achievement ratio of iPTH,Calcium and phosphorus after taking Cinacalcet HCL in hemodialysis subjects with mild, moderate and severe SHPT; 2.
- Trial name
- ACTIVE (NCT03123406)
- Testing
- Cinacalcet HCl
- Where
- China
- Volunteers
- 750 people
- Sponsor
- Kyowa Kirin China Pharmaceutical Co., Ltd.
Child, Hospitalized, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Improvement of Pneumonic Children
In Egypt, according to UNICEF 2018, Acute Respiratory Tract Infection (ARTIs)was estimated to account for 11% and 19% of the under-five and post-neonatal mortalities respectively.
- Conditions
- Child, Hospitalized, Vitamin D Deficiency, Pneumonia
- Trial name
- NCT04244474
- Testing
- A single one ml injection
- Where
- Egypt
- Volunteers
- 191 people
- Sponsor
- Cairo University
Vitamin D Deficiency, HIV Infections
The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients
The purpose of this study is to determine the effect of normalization of vitamin D levels on bone density, immune and adipocyte function in HIV1-seropositive patients.
- Trial name
- NCT00306410
- Testing
- colecalciferol
- Where
- Netherlands
- Volunteers
- 85 people
- Sponsor
- Radboud University Medical Center
Vitamin D Deficiency
Clinical Comparative Evaluation of the Use of Photodynamic Therapy in Conjunction With the Use of Vitamin D in Management Stage II Grade B Periodontitis Patients
Clinical Comparative Evaluation of the use of Photodynamic Therapy in conjunction with the use of Vitamin D in management Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06700122
- Testing
- non-surgical periodontal therapy (SRP) and Photodynamic therapy (PDT) with systemic vitamin D
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cairo University
Obesity, Vitamin D Deficiency
Vitamin D Supplementation in Psychiatric Illnesses
Children and adolescents with psychiatric illnesses who are treated with medications called second generation antipsychotic agents (SGA) often gain excessive weight during their treatment with these medications.
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia
- Trial name
- VDSS (NCT01004354)
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- University of Massachusetts, Worcester
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
Diabetic Foot Ulcers, Vitamin D Deficiency
Vitamin D Treatment of Diabetic Patients With Foot Ulcers
The purpose of this study, is to determine whether daily supplements of vitamin D improves wound healing in diabetic patients with chronic foot ulcers.
- Trial name
- NCT03813927
- Testing
- Vitamin D
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Zealand University Hospital
Osteomalacia
Cinacalcet for Fibroblast Growth Factor 23 (FGF23)-Mediated Hypophosphatemia (Hypophosphatemic Rickets)
Background: Hypophosphatemia is a condition where a person has low levels of phosphorus in the blood. Low blood phosphorus can cause muscle and bone weakness (such as rickets) and teeth problems.
- Trial name
- NCT01748812
- Testing
- Osteomalacia
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)