Clinical trials: Hypovitaminosis A
Obesity &Amp; Overweight, Bariatric Surgery
Validation of a Score for Supplementation Needs of Vitamins, Micronutrients and Proteins After Bariatric Surgery
ABSTRACT Obesity is, nowadays, a pandemic. The treatment of patients affected by obesity is very complex and requires the synergy of a multidisciplinary team that addresses the problem in its different spheres.
- Conditions
- Obesity &Amp; Overweight, Bariatric Surgery, Bariatric Surgery Complication
- Trial name
- BARSCORE (NCT07268209)
- Where
- Spain
- Volunteers
- 4,514 people
- Sponsor
- Hospital Universitari de Bellvitge
Vitamin D Deficiency, 25-Hydroxyvitamin D Concentration
Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena?
Several studies have demonstrated that D2 treatment is associated with a decrease in 25(OH)D3 level and therefore have proposed that D3 would be preferable in term of raising total 25(OH)D level.
- Trial name
- NCT03035084
- Testing
- Vitamin D3, Vitamin D2
- Where
- Saudi Arabia
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
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
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
Endometriosis, Vitamin D Deficiency/Insufficiency
Analysis of Vitamin D and VDR Expression in Endometriosis: A Case-Control Study
The goal of this cross-sectional prospective matching study is to evaluate whether serum vitamin D levels and vitamin D receptor (VDR) expression are associated with the presence and severity of endometriosis in women of…
- Conditions
- Endometriosis, Vitamin D Deficiency/Insufficiency, Vitamin D Status
- Trial name
- NCT06289257
- Testing
- Vitamin D level, Vitamin D receptor
- Where
- Thailand
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Khon Kaen University
X-linked Hypophosphatemia
A First-in-human Study of KK8123 in Adults With X-linked Hypophosphatemia
A first-in-human study of KK8123 in adults with X-linked hypophosphatemia.
- Trial name
- NCT06525636
- Testing
- KK8123
- Where
- 10 sites in United States, Canada and 3 more
- Volunteers
- 39 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Iron Deficiency, Vitamin A Deficiency
Nutritional Status and Bouillon Use in Northern Ghana
This pilot aims to generate data that are critical for informing the design of a planned, more detailed study to evaluate the effect of multiple micronutrient (MN)-fortified bouillon cube on biomarkers of nutrient status of women…
- Conditions
- Iron Deficiency, Vitamin A Deficiency, Vitamin B 12 Deficiency, Folate Deficiency
- Trial name
- NCT04632771
- Testing
- N/A (observational study)
- Where
- Ghana
- Volunteers
- 995 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
HIV Infections, Vitamin A Deficiency
Vitamin A to Reduce HIV in Vaginal Secretions and Prevent Viral Transmission
HIV infected individuals with vitamin A deficiency may be more likely to transmit the virus to others than HIV infected individuals who have normal levels of vitamin A.
- Conditions
- HIV Infections, Vitamin A Deficiency, HIV Seronegativity
- Trial name
- NCT00053612
- Testing
- Vitamin A
- Volunteers
- 400 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Vitamin D Deficiency
A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency
A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in adults with Vitamin D Deficiency
- Trial name
- NCT03233295
- Testing
- Vitamin D3 B.O.N. Injection
- Volunteers
- 108 people
- Sponsor
- Kwang Dong Pharmaceutical co., ltd.
Undernutrition
Nutributter Programming to Prevent Undernutrition: an Evaluation
This randomized, controlled effectiveness study examines Nutributter programming within an integrated package of maternal and child health services offered by Haiti's Ministry of Health (MSPP) to prevent undernutrition among…
- Trial name
- NPPU (NCT01552512)
- Testing
- Nutributter Program, Integrated Package
- Where
- Haiti
- Volunteers
- 1,228 people
- Sponsor
- Washington University School of Medicine
Hypovitaminosis, Vitamin A Deficiency
Impact of Maternal Supplementation With Dual Megadose of Vitamin A
The purpose of this study is to evaluate the effect of maternal supplementation with 400,000 IU of oral retinol palmitate in the post-partum, the nutritional situation of the binomial mother-child, on growth and morbidity of…
- Trial name
- NCT00742937
- Testing
- vitamin A
- Where
- Brazil
- Volunteers
- 239 people, healthy volunteers welcome
- Sponsor
- Instituto Materno Infantil Prof. Fernando Figueira
Healthy
Assessment of the Efficacy of Vitamin D-fortified Bread in Healthy Adults
The aim of this study is to evaluate the efficacy of daily intake of fortified bread with vitamin D on serum 25-hydroxyvitamin D level, glycemic and lipidemic status in healthy subjects compared to vitamin D supplement.
- Trial name
- NCT02516254
- Testing
- fortified bread, supplement
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Vitamin D Deficiency, Non-ST Elevation Myocardial Infarction (nSTEMI)
Vitamin D Deficiency Treatment Outcomes After Non-ST-Segment Elevation Myocardial Infarction
The leading cause of death in the world is due to cardiovascular events, which originate from coronary artery stenosis therefore it affects myocardial blood flow and finally may cause infarction.
- Conditions
- Vitamin D Deficiency, Non-ST Elevation Myocardial Infarction (nSTEMI), Inflammation, Coronary Artery Disease With Myocardial Infarction
- Trial name
- NAVID (NCT03405207)
- Testing
- Vitamin D3 50000 UNT Oral Capsule
- Where
- Iran
- Volunteers
- 70 people
- Sponsor
- Isfahan University of Medical Sciences
Hyperemesis Gravidarum, Nausea Gravidarum
Chewing Gum Containing Vitamin-c to Treat Emesis Gravidarum
Nausea and vomiting is a common complication of pregnancy and occurs in 70-80% of all pregnancies. The symptoms usually start 2-4 weeks after fertilization and peak between the 9th and 16th week of gestation.
- Conditions
- Hyperemesis Gravidarum, Nausea Gravidarum, Vitamin C Deficiency
- Trial name
- NCT04284696
- Testing
- Pregnan-C-Gum(R) chewing gum
- Where
- Austria
- Volunteers
- 126 people
- Sponsor
- Medical University of Vienna
Vitamin D Deficiency, Cardiometabolic Risk Factors
Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels
This study aimed to compare the effects between sunlight exposure and oral vitamin D supplementation on serum 25-hydroxyvitamin D concentration and metabolic markers in Korean young adults.
- Trial name
- NCT03310242
- Testing
- Sunlight Exposure, Vitamin D Supplementation
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
COVID, Vitamin D Deficiency
Vitamin D Levels in SARS-CoV-2: Do Current Adequacy Thresholds Reflect Clinical Risk? Insights From a Large Turkish Cohort
Blood vitamin D levels may be associated with severity of viral infections. To find out If there is a statistically significant relation between blood 25-hydroxy vitamin D (25(OH)D) levels and disease severity, patients with…
- Trial name
- NCT04394390
- Testing
- vitamin d
- Where
- Turkey (Türkiye)
- Volunteers
- 1,100 people
- Sponsor
- Bursa City Hospital
Vitamin D Deficiency
Vitamin D Status and Its Influencing Factors in Zhejiang Province: A Multicenter Cross-Sectional Study
Vitamin D deficiency is a global public health problem, with an estimated 1 billion people affected worldwide, and large-scale systematic data for Zhejiang Province remain scarce.
- Trial name
- NCT07866391
- Where
- 2 sites in China
- Volunteers
- 10,000 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital of Zhejiang University
Vitamin D Deficiency
Vitamin D in Systemic Sclerosis Patients With Periodontitis
Vitamin D has been considered to possess anti-inflammatory and antimicrobial activity which may be a link for the known interaction of Systemic Sclerosis (SSc) and coronary heart disease (CHD).
- Trial name
- NCT04066842
- Testing
- Observation
- Where
- Italy
- Volunteers
- 168 people, healthy volunteers welcome
- Sponsor
- University of Messina
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