Clinical trials: Dietary Calcium Deficiency
Osteoporosis, Osteopenia
Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
The purpose is to perform a one-year study designed to assess whether treatment of hypovitaminosis D increases intestinal absorption of calcium, subsequent retention of calcium within bone, decreases bone turnover, and favorably…
- Conditions
- Osteoporosis, Osteopenia, Vitamin D Deficiency, Hypoparathyroidism
- Trial name
- NCT00581828
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
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
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
Hemodyalysis, Kidney Tansplant
Assessment of Mineral and Bone Disorders in Kidney Transplant Recipients
This study aims to integrate bone measurements (including bone turnover markers (BTM), bone mineral density (BMD) measurement, vertebral fracture assessment (VFA), trabecular bone score (TBS) ) commonly used in the general…
- Conditions
- Hemodyalysis, Kidney Tansplant, Osteoporosis, CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder
- Trial name
- NCT07141043
- Where
- Romania
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Grigore T. Popa University of Medicine and Pharmacy
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
Vitamin D Deficiency, Secondary Hyperparathyroidism
Vitamin D Status in Males in Jerusalem Area and Its Correlation to Parathyroid Hormone (PTH) Level and Bone Mineral Density
Because of its high sun exposure, Israel was traditionally supposed to be protected from vitamin D deficiency, and the country food products hardly contain vitamin D supplements.
- Conditions
- Vitamin D Deficiency, Secondary Hyperparathyroidism, Osteomalacia
- Trial name
- NCT01025128
- Testing
- 25 OH vitamin D
- Where
- Israel
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Clalit Health Services
Bone Diseases, Osteomalacia
Study of the Diagnostic Value of Stable Calcium Isotope Profiling in Bone and Calcium Disorders
The purpose of this study is to determine whether mass spectrometry analysis of stable (non-radioactive) calcium isotopes in plasma or urine samples can help in the diagnosis of bone and calcium disorders.
- Conditions
- Bone Diseases, Osteomalacia, Osteoporosis
- Trial name
- eCaSIS (NCT02252679)
- Where
- 2 sites in Belgium, Germany
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Chronic Kidney Disease (Stage 3-4), Chronic Kidney Disease Mineral and Bone Disorder
Phosphate Assessment in Chronic Kidney Disease Patients Study
The proposed pilot feeding study aims to explore novel pathways in phosphate metabolism and identify new biomarkers, as well as to develop a compound index for assessing phosphate overload with high validity and reliability.
- Trial name
- PACK (NCT07368946)
- Testing
- Dietary Phosphorus Intake
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Vitamin D Deficiency, Hypocalcemia
Effect of Vitamin D Supplement on Disease Activity in SLE
To study the effect of vitamin D supplementation on disease activity of SLE ( SLEDAI-2K ) and IL-6 level
- Conditions
- Vitamin D Deficiency, Hypocalcemia, Hyperparathyroidism, Systemic Lupus Erythematosus (Disorder)
- Trial name
- NCT05260255
- Testing
- vitamin D2 ( calciferol )
- Where
- Thailand
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Department of Medical Services Ministry of Public Health of Thailand
Chronic Renal Insufficiency, Renal Osteodystrophy
Clinical Observation on Bone Metabolism Induced by Chronic Renal Insufficiency
Patients with chronic renal insufficiency usually develop secondary osteoporosis or bone loss, which is called renal osteodystrophy.
- Trial name
- NCT02147782
- Where
- 4 sites in China
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Shanghai University of Traditional Chinese Medicine