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83 studies found for:    Open Studies | "Vitamin A"
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Rank Status Study
1 Recruiting Vitamin A Replacement in Patients Undergoing HSCT and Its Role on MBI-LCBI Rates
Condition: Hematopoietic Stem Cell Transplant
Intervention: Dietary Supplement: Vitamin A
2 Recruiting Novel Isotope Dilution Technique to Assess Vitamin A Status and Hypervitaminosis A
Conditions: Inflammation;   High Vitamin A Store;   Adequate Vitamin A Store
Intervention: Device: Stable isotope labelled vitamin A
3 Not yet recruiting Efficacy of Vitamin A Fortified Rice in Lactating Thai Women
Condition: Vitamin A Status
Interventions: Other: Vitamin A fortified rice;   Other: Normal rice
4 Recruiting Assessing Model Parameters for Applying the Retinol Isotope Dilution (RID) Method
Conditions: Vitamin A Deficiency;   Malaria;   Inflammation
Intervention: Other: Retinol Isotope Dilution (RID)
5 Recruiting Retinol on Human Skin Aging in East Asian Descent
Condition: Intrinsic Aging of Skin
Interventions: Drug: Retinol;   Drug: Placebo
6 Recruiting Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status
Condition: Vitamin A Deficiency
Interventions: Dietary Supplement: Conventional white maize;   Dietary Supplement: Provitamin A carotenoid biofortified maize;   Dietary Supplement: Preformed vitamin A fortified maize
7 Recruiting Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children
Condition: Healthy Participants
Interventions: Biological: Influenza virus vaccine;   Dietary Supplement: Vitamins A and D;   Other: Placebo
8 Recruiting Effects of EED on Zn Absorption and Retention in Children From a Standard Dose
Conditions: Environmental Enteric Dysfunction;   Zinc Deficiency;   Vitamin A Deficiency
Interventions: Drug: 3 mg zinc sulfate supplement;   Drug: 0.5 mg of 13C10-retinyl-acetate
9 Recruiting Vitamin A Status and Risk of Excessive Vitamin A Intake Among Urban Filipino Children
Condition: Vitamin A Status
Interventions: Other: High VA intake, recent VAS;   Other: High VA intake;   Other: Low/adequate VA intake
10 Recruiting Effect of Lipidic Nutrients on Memory and Well Being in Healthy Aging Adults
Condition: Healthy
Interventions: Dietary Supplement: Vitamin A +Long chain PUFA;   Other: Placebo
11 Recruiting Vitamin A in Brown Fat Activity
Condition: Brown Adipose Tissue
Intervention: Other: Cold exposure
12 Not yet recruiting The Role of Antioxidant Supplementation in Keratoconus Patients
Condition: Keratoconus
Interventions: Other: Antioxidants (Vitamins A,C,E) plus GSH;   Other: Placebo;   Dietary Supplement: Centrum;   Other: Dietary Sources
13 Recruiting Retinol-induced Dermatitis in Aged Skin
Conditions: Aged Skin;   Photoaged Skin
Intervention:
14 Not yet recruiting Immunogenicity and Safety Study of GSK Biologicals' Candidate Malaria Vaccine Given at 6, 7.5 and 9 Months of Age in Co-administration With Measles, Rubella and Yellow Fever (YF) Vaccines Followed by a Booster of the Malaria Vaccine.
Condition: Malaria Vaccines
Interventions: Dietary Supplement: Vitamin A;   Biological: Candidate Plasmodium falciparum malaria vaccine;   Biological: MR-Vac;   Biological: Stamaril
15 Recruiting Comparison of Two Nutrition Interventions in Young Children in El Salvador
Condition: Micronutrient Deficiency
Interventions: Dietary Supplement: 21 micronutrient-fortified supplement;   Dietary Supplement: Cereal Fortificado (Fortified Cereal);   Dietary Supplement: Ferrous sulphate;   Dietary Supplement: Vitamin A
16 Recruiting Pharmacogenomics Study on Treatment of Psoriasis Vulgaris by Acitretin Capsules
Condition: Psoriasis Vulgaris
Intervention: Drug: Acitretin Capsules
17 Recruiting Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration Using a 22 vs 25-Gauge Needle
Conditions: Malignant Neoplasm of Respiratory and Intrathoracic Organ Carcinoma;   Lung Cancer
Interventions: Device: 25-Gauge Needle;   Device: 22-Gauge Needle;   Procedure: Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration (EBUS-TBNA)
18 Recruiting Phase 2 Tolerability and Effects of ALK-001 on Stargardt Disease
Conditions: Stargardt Disease;   Stargardt Macular Degeneration;   Stargardt Macular Dystrophy;   Autosomal Recessive Stargardt Disease 1 (ABCA4-related)
Interventions: Drug: ALK-001;   Drug: Placebo
19 Recruiting Interventional Testing of Gene-environment Interactions Via the Verifomics Mobile Application
Conditions: Obesity;   Rhinitis;   Rhinitis, Allergic;   Respiratory Sounds;   Dyspnea;   Headache;   Migraine Disorders;   Arthritis;   Arthralgia;   Anxiety;   Sleep Initiation and Maintenance Disorders;   Sleep Deprivation
Interventions: Dietary Supplement: Vitamin A;   Dietary Supplement: Vitamin B6;   Dietary Supplement: Vitamin C;   Dietary Supplement: Nicotinamide;   Dietary Supplement: Vitamin D3;   Dietary Supplement: Vitamin E;   Other: Broccoli;   Other: Spinach;   Dietary Supplement: Caffeine;   Other: Coffee;   Device: Axon Eyewear;   Other: Chocolate
20 Not yet recruiting Intercostal Liposomal Bupivacaine for the Management of Blunt Chest Wall Trauma
Conditions: Blunt Chest Wall Trauma;   Rib Fracture;   Sternal Fracture
Interventions: Drug: Liposomal bupivacaine;   Drug: 0.9% sodium chloride

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Study has passed its completion date and status has not been verified in more than two years.