Increased Calcium Absorption From Synthetic Stable Amorphous Calcium Carbonate: Double‐Blind Randomized Crossover Clinical Trial in Postmenopausal Women. (October 2014)

• Record Type: Journal Article
• Authors: Vaisman, Nachum; Shaltiel, Galit; Daniely, Michal; Meiron, Oren E; Shechter, Assaf; Abrams, Steven A; Niv, Eva; Shapira, Yami; Sagi, Amir
• Is Part Of: Journal of bone and mineral research. Volume 29:Number 10(2014:Oct.)
• Page Start: 2203
• Page End: 2209
• Publication Date: 2014-10
• Subjects: Bones -- Metabolism -- Periodicals; Mineral metabolism -- Periodicals; 612.392
• DOI: 10.1002/jbmr.2255
• Languages: English
• ISSNs: 0884-0431

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>ABSTRACT</title> <sec id="jbmr2255-sec-0001" sec-type="section"> <p>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 <sup>44</sup>Ca at intervals of at least 3 weeks. After swallowing the capsules, intravenous CaCl<sub>2</sub> labeled with <sup>42</sup>Ca 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 (<italic>p</italic> < 0.02). The higher absorption of the synthetic stable ACC may serve as a more efficacious way of calcium supplementation. © 2014 American Society for Bone and Mineral Research.</p> </sec> </abstract>