Abstract
1,25-Dihydroxyvitamin D3 (1,25D) is the endocrine metabolite of vitamin D that signals through binding to the vitamin D receptor (VDR). The ligand-receptor complex transcriptionally regulates genes that encode factors promoting intestinal calcium and phosphate absorption plus bone remodeling, maintaining a skeleton with reduced risk of age-related osteoporotic fractures. 1,25D/VDR signaling further exerts feedback control of mineral ions via regulation of FGF23, klotho, and CYP24A1 to prevent age-related, ectopic calcification, and associated pathologies. Vitamin D also elicits xenobiotic detoxification, oxidative stress reduction, antimicrobial defense, immunoregulation, anti-inflammatory/anticancer actions, and cardiovascular benefits. 1,25D exerts neuroprotective actions against excitotoxicity, and induces serotonin mood elevator to support cognitive function and prosocial behavior. Nutrient, low-affinity VDR ligands including curcumin, polyunsaturated fatty acids, and delphinidin/anthocyanidins initiate VDR signaling, whereas longevity agents such as resveratrol and SIRT1 potentiate VDR signaling. Therefore, liganded VDR modulates the expression of a network of genes that facilitates health span by delaying the chronic diseases of aging.
Original language | English (US) |
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Title of host publication | Molecular Basis of Nutrition and Aging |
Subtitle of host publication | A Volume in the Molecular Nutrition Series |
Publisher | Elsevier Inc. |
Pages | 449-471 |
Number of pages | 23 |
ISBN (Electronic) | 9780128018279 |
ISBN (Print) | 9780128018163 |
DOIs | |
State | Published - Apr 28 2016 |
Keywords
- 1,25-Dihydroxyvitamin D
- Anti-inflammatory
- Anticancer nutrient
- Ectopic calcification
- FGF23
- Klotho
- Neuroprotection
- Osteoporosis
- Vitamin D receptor
ASJC Scopus subject areas
- Medicine(all)