Increased Calcium Absorption From Synthetic Stable Amorphous Calcium Carbonate: Double-Blind Randomized Crossover Clinical Trial in Postmenopausal Women
| Autor: | Galit Shaltiel, Michal Daniely, Nachum Vaisman, Eva Niv, Amir Sagi, Assaf Shechter, Oren E. Meiron, Yami Shapira, Steven A. Abrams |
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| Rok vydání: | 2014 |
| Předmět: |
Calcium metabolism
medicine.medical_specialty business.industry Endocrinology Diabetes and Metabolism Elemental calcium chemistry.chemical_element Clinical nutrition Calcium medicine.disease Gastroenterology vitamin D deficiency Amorphous calcium carbonate Metabolic Bone Disorder Bioavailability chemistry.chemical_compound Endocrinology chemistry Internal medicine medicine Orthopedics and Sports Medicine business |
| Zdroj: | Journal of Bone and Mineral Research. 29:2203-2209 |
| ISSN: | 0884-0431 |
| DOI: | 10.1002/jbmr.2255 |
| Popis: | Calcium supplementation is a widely recognized strategy for achieving adequate calcium intake. We designed this blinded, randomized, crossover interventional trial to compare the bioavailability of a new stable synthetic amorphous calcium carbonate (ACC) with that of crystalline calcium carbonate (CCC) using the dual stable isotope technique. The study was conducted in the Unit of Clinical Nutrition, Tel Aviv Sourasky Medical Center, Israel. The study population included 15 early postmenopausal women aged 54.9 ± 2.8 (mean ± SD) years with no history of major medical illness or metabolic bone disorder, excess calcium intake, or vitamin D deficiency. Standardized breakfast was followed by randomly provided CCC or ACC capsules containing 192 mg elemental calcium labeled with 44Ca at intervals of at least 3 weeks. After swallowing the capsules, intravenous CaCl2 labeled with 42Ca on was administered on each occasion. Fractional calcium absorption (FCA) of ACC and CCC was calculated from the 24-hour urine collection following calcium administration. The results indicated that FCA of ACC was doubled (± 0.96 SD) on average compared to that of CCC (p |
| Databáze: | OpenAIRE |
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