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Type: Journal article
Title: Vitamin D actions to regulate calcium and skeletal homeostasis
Author: Anderson, P.
Turner, A.
Morris, H.
Citation: Clinical Biochemistry, 2012; 45(12):880-886
Publisher: Pergamon-Elsevier Science Ltd
Issue Date: 2012
ISSN: 0009-9120
Statement of
Paul H. Anderson, Andrew G. Turner, Howard A. Morris
Abstract: The endocrine action of plasma 1,25-dihydroxyvitamin D plays a key role in the regulation of plasma calcium and phosphate homeostasis with activities on the intestine, kidney and bone. A current, controversial question is whether vitamin D exerts direct actions on bone cells to regulate bone mineral homeostasis. Results from clinical, rodent model and in vitro studies on human bone cells provide an impressive body of data to support this proposal particularly at the level of serum 25-hydroxyvitamin D status. Each of the major bone cell types is capable of metabolising vitamin D to the active metabolite, 1,25-dihydroxyvitamin D. Thus under conditions when bone tissue synthesis of 1,25-dihydroxyvitamin D is optimal, vitamin D activity enhances bone mineral status. Dietary calcium and phosphate intakes are the critical environmental cues together with vitamin D status to determine whether 1,25-dihydroxyvitamin D exerts an anabolic or catabolic action on bone mineral status.
Keywords: Vitamin D; Vitamin D metabolism; 25-hydroxyvitamin D critical serum levels; Dietary calcium; Metabolic bone disease; Osteoporosis; Osteomalacia/rickets; Calcium homeostasis
Rights: Copyright © 2012 The Canadian Society of Clinical Chemists
RMID: 0020121155
DOI: 10.1016/j.clinbiochem.2012.02.020
Appears in Collections:Biochemistry publications

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