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Chronic Iron Deficiency as an Emerging Risk Factor for Osteoporosis: A Hypothesis
Abstract
Iron is essential in oxygen transport and participates in many enzymatic systems in the body, with important roles in collagen synthesis and vitamin D metabolism. The relationship between iron and bone health comes from clinical observations in iron overload patients who suffered bone loss. The opposite scenario—whether iron deficiency, with or without anemia, affects bone metabolism—has not been fully addressed. This is of great interest, as this nutrient deficiency is a worldwide public health problem and at the same time osteoporosis and bone alterations are highly prevalent. This review presents current knowledge on nutritional iron deficiency and bone remodeling, the biomarkers to evaluate iron status and bone formation and resorption, and the link between iron and bone metabolism. Finally, it is hypothesized that chronic iron deficiency induces bone resorption and risk of osteoporosis, thus complete recovery from anemia and its prevention should be promoted in order to improve quality of life including bone health. Several mechanisms are suggested; hence, further investigation on the possible impact of chronic iron deficiency on the development of osteoporosis is needed.
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“conversion of cholecalciferol to the biologically active form, calcitriol (1,25-dihydroxyvitamin D3) requires two steps of hydroxylation—the first in the liver and the second in the kidney—which depend on enzymes containing heme, i.e., cytochromes P450 (CYP2R1 and CYP27B1 respectively) [38,39].”
From The Association between Iron and Vitamin D Status in Female Elite Athletes (2018) · cites this paper as [38]
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“Iron, as a component of the cytochrome P450 monooxygenase superfamily, participates in synthesis of the active form of vitamin D3, not only in the last stage of its bioactivation from 25(OH)D to 1,25-dihydroxyvitamin D3 (25-hydroxyvitamin D 1-α-hydroxylase—CYP27B1), but also in the earlier stage in which cholecalciferol is converted to 25(OH)D (25-hydroxylase—CYP2R1) [38,53].”
From The Association between Iron and Vitamin D Status in Female Elite Athletes (2018) · cites this paper as [38]
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Cites
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Metadata
- Authors
- Toxqui, L., & Vaquero, M.
- Affiliations
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), C/José Antonio Novais 10, Madrid 28040, Spain
- Venue
- Nutrients
- Publisher
- MDPI AG
- Published
- 2015-04-02
- Volume
- 7
- Issue
- 4
- Pages
- 2324-2344
- ISSN
- 2072-6643
- Cited by
- 154
- References
- 8
- Language
- en
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