Clinical trials: Calcium Deficiency
Infection, Human Immunodeficiency Virus
Relative Bioavailability Study of a Fixed-dose Combination Dolutegravir/Abacavir/Lamivudine Dispersible Tablet
This is an open-label, randomized, crossover study in healthy adult subjects with 5 treatment groups over 5 dosing periods. This study will evaluate pharmacokinetic parameters and relative bioavailability of a dispersible…
- Trial name
- NCT02893488
- Testing
- DTG/ABC/3TC FDC DISPERSIBLE TABLET, EPZICOM (ABC/3TC), TIVICAY (DTG)
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- ViiV Healthcare
Nutritional Rickets
Vitamin D and Genetics in Nutritional Rickets
The purpose of this study is: 1. To compare the response of rickets to calcium with and without vitamin D. 2. To assess whether vitamin D increases calcium absorption in calcium deficiency rickets. 3.
- Trial name
- NCT00949832
- Testing
- Vitamin D + Calcium, Calcium, Vitamin D2
- Where
- Nigeria
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Calcium Deficiency
Effect of Calcium-fortified Cereal Bars on Dietary Calcium Intake in Women
The purpose of this study is to determine whether eating Kellogg's Nutri-Grain cereal bars will increase calcium intake in healthy adult women.
- Trial name
- NCT01508689
- Testing
- Receive Kellogg's Nutri-Grain® cereal bars first, Receive Kellogg's Nutri-Grain® cereal bars second
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Texas Woman's University
Phosphate Diabetes, X-linked Hypophosphatemia
Phosphorus-31 Spectroscopy in Phosphate Diabetes
Phosphate diabetes is defined by urinary phosphate wasting due to impaired tubular reabsorption. It can be classified based on either a genetic or acquired origin.
- Trial name
- Phos-ATP (NCT06921720)
- Testing
- intra-muscular ATP values in phosphate diabetes, intra-muscular phosphate values in phosphate diabetes
- Where
- 2 sites in France
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
Vitamin D Deficiency, Osteoporosis
Vitamin D Deficiency in Elderly African American Women in Central Texas
In order to make bone health a reality for older adults, we need to consider the prevalence of Vitamin D deficiency in relation to environment latitude as well as vitamin D supplementation.
- Conditions
- Vitamin D Deficiency, Osteoporosis, Osteopenia
- Trial name
- NCT01971411
- Testing
- Calcium 500mg with 200 IU Vitamin D - 2 tablets daily, Blood levels of Vitamin D, Serum CTX, Mg, Ca++ and iPTH, Usual sun exposure documentation
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- McLennan County Medical Education and Research Foundation
Osteomalacia
Serum FGF-23 and Vitamin D Deficiency
We aimed to determine the effect of vitamin D replacement therapy on serum FGF-23 concentrations in vitamin D deficient women and to compare the FGF-23 concentrations of vitamin D deficient patients with healthy subjects and…
- Trial name
- NCT01102751
- Where
- Turkey (Türkiye)
- Volunteers
- healthy volunteers welcome
- Sponsor
- Istanbul University
Chronic Kidney Disease Mineral and Bone Disorder
Calcium Balance Studies in Children With CKD and on Dialysis
This is a novel, non-invasive method of assessing Ca balance by natural Ca isotope fractionation.
- Trial name
- Cal-Bal (NCT03285854)
- Testing
- Collection of blood, urine and stool samples
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Great Ormond Street Hospital for Children NHS Foundation Trust
Vitamin D Deficiency
Vitamin D Deficiency and Placental Calcification in Low-risk Obstetric Population - Are They Related?
Maternal vitamin D deficiency has been suggested to influence fetal and neonatal health. The role of placenta in vitamin D regulation is known but alteration of Vitamin D levels at placental pathologies is unknown.
- Trial name
- NCT02190396
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Zekai Tahir Burak Women's Health Research and Education Hospital
Spinal Cord Injury
Vitamin D and Calcium Study
Vitamin D aids in the body's ability to absorb calcium, it is a vital component in bone formation and break down. Reduced levels of vitamin D can indicate a vitamin deficiency and may depress serum calcium levels.
- Trial name
- NCT00857831
- Testing
- Vitamin D and Calcium
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Osteoarthritis, Osteoporosis
Development of a Non-invasive Assessment of Human Bone Quality Using Spatially Offset Raman Spectroscopy
In this study spatially offset Raman spectroscopy (SORS), which allows the collection of Raman spectra through turbid media, is being applied to collect Raman spectra of bone.
- Conditions
- Osteoarthritis, Osteoporosis, Osteogenesis Imperfecta, Rickets / Osteomalacia
- Trial name
- NCT02814591
- Testing
- spatially offset Raman spectrometer (SORS)
- Volunteers
- 245 people, healthy volunteers welcome
- Sponsor
- University College, London
Hypophosphatemia, Familial, Rickets
Hypophosphatemic Rickets in Norway
The purpose of the study is to do a follow-up survey of all individuals with hereditary hypophosphatemia in Norway, focusing on manifestations in childhood and adolescence.
- Conditions
- Hypophosphatemia, Familial, Rickets, Hyperphosphatemia
- Trial name
- NCT01057186
- Testing
- Alfacalcidol; phosphate., Sevelamer
- Where
- Norway
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Haukeland University Hospital
Ridge Deficiency
Evaluation of Silica-calcium Phosphate Composite in Socket Augmentation
Ideal bone graft should possess osteogenic, osteoinductive, and osteoconductive properties. Unfortunately, all of these are solely found within the autogenous graft that is available only in limited quantities, and it is…
- Trial name
- NCT03897010
- Testing
- Socket Graft
- Where
- Egypt
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Accidental Falls
The FREEDOM Study: a Randomised Controlled Trial of Sunlight and Calcium in Older People
The proposed study will determine the effect of a public health strategy (ie. increased sun light exposure and increased calcium intake) to reduce falls in older people in residential care using a randomised trial.
- Trial name
- NCT00322166
- Testing
- Sunlight, Sunlight and calcium, control
- Where
- Australia
- Volunteers
- 600 people, healthy volunteers welcome
- Sponsor
- University of Sydney
Early Childhood Caries, Vitamin D Deficiency
Vitamin D Status With Early Childhood Caries
Studies that give people vitamin D supplements to prevent caries have found that vitamin D is effective at preventing the development of caries.
- Trial name
- NCT03521492
- Testing
- serum vitamin D , calcium , parathyroid hormone and albumin level
- Where
- Saudi Arabia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ministry of Health, Saudi Arabia
Vitamin D Deficiency
Effects of Vitamin D and Calcium Supplementation on Health and Well-being of Vitamin D Deficient UAE Citizens
The trial plan to determine whether a daily capsule containing vitamin D(3) (2000 IU), calcium (600 mg), both, or a placebo for 6 months in UAE citizens with evidence of vitamin D deficiency will lead to a clinical benefit.
- Trial name
- NCT02662491
- Testing
- Vitamin D and calcium, Vitamin D, Calcium
- Where
- United Arab Emirates
- Volunteers
- 545 people, healthy volunteers welcome
- Sponsor
- United Arab Emirates University
Vitamin D Deficiency
Treatment of Vitamin D Insufficiency
The purpose of this study is to answer the following questions: Does vitamin D increase calcium absorption, bone mass and muscle mass and function in women past menopause who have mildly low vitamin D levels? Do these benefits…
- Trial name
- NCT00933244
- Testing
- High Dose Vitamin D3, Low Dose Vitamin D3
- Where
- United States
- Volunteers
- 230 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Pregnancy Complications
Vitamin D Treatment and Hypocalcemic Pregnant Women
Pregnant women in 24-26 gestational week will be recruited.Serum calcium and 25(OH)D will be evaluated and women with mild hypocalcemia (serum calcium 8-8.6 mg/dl) and 25(OH)D less than 30ng/ml will be entered to study. .
- Trial name
- NCT02021864
- Testing
- vitamin D3 50,000 unit, prenatal multivitamin
- Where
- Iran
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Dr. Sima Hashemipour
Ergocalciferol
Pilot Study: The Effect of Ergocalciferol on Plasma Mucin-1 Levels
To determine if a one-time oral administration of ergocalciferol results in a decline in plasma mucin-1 levels in healthy individuals and individuals with ADTKD-MUC1.
- Trial name
- NCT03747523
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Spinal Muscular Atrophy, Fragile X Syndrome
Early Check: Expanded Screening in Newborns
Early Check provides voluntary screening of newborns for a selected panel of conditions. The study has three main objectives: 1) develop and implement an approach to identify affected infants, 2) address the impact on infants and…
- Conditions
- Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy
- Trial name
- NCT03655223
- Testing
- Confirmatory Testing
- Where
- United States
- Volunteers
- 30,000 people, healthy volunteers welcome
- Sponsor
- RTI International
Vitamin D Deficiency
Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals
This is a cross-sectional study designed to compare plasma/serum and urine vitamin D metabolite profiles of vitamin D sufficient and insufficient individuals. There are two phases of this study.
- Trial name
- VITD-2013 (NCT02422784)
- Testing
- Rooibos Iced-Tea (Control), Rooibos Tea - Vitamin D3, Rooibos Tea- Vitamin D3 & Calcium
- Where
- Canada
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Manitoba