Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Vitamin_D> ?p ?o }
- Vitamin_D abstract "Vitamin D refers to a group of fat-soluble secosteroids responsible for enhancing intestinal absorption of calcium, iron, magnesium, phosphate, and zinc. In humans, the most important compounds in this group are vitamin D3 (also known as cholecalciferol) and vitamin D2 (ergocalciferol). Cholecalciferol and ergocalciferol can be ingested from the diet and from supplements. Very few foods contain vitamin D; synthesis of vitamin D (specifically cholecalciferol) in the skin is the major natural source of the vitamin. Dermal synthesis of vitamin D from cholesterol is dependent on sun exposure (specifically UVB radiation).Vitamin D from the diet or dermal synthesis from sunlight is biologically inactive; activation requires enzymatic conversion (hydroxylation) in the liver and kidney. Evidence indicates the synthesis of vitamin D from sun exposure is regulated by a negative feedback loop that prevents toxicity, but because of uncertainty about the cancer risk from sunlight, no recommendations are issued by the Institute of Medicine (US), for the amount of sun exposure required to meet vitamin D requirements. Accordingly, the Dietary Reference Intake for vitamin D assumes no synthesis occurs and all of a person's vitamin D is from food intake, although that will rarely occur in practice. As vitamin D is synthesized in adequate amounts by most mammals exposed to sunlight, it is not strictly a vitamin, and may be considered a hormone as its synthesis and activity occur in different locations. Vitamin D has a significant role in calcium homeostasis and metabolism. Its discovery was due to effort to find the dietary substance lacking in rickets (the childhood form of osteomalacia).Beyond its use to prevent osteomalacia or rickets, the evidence for other health effects of vitamin D supplementation in the general population is inconsistent. The effect of vitamin D supplementation on mortality is not clear, with one meta-analysis finding a decrease in mortality in elderly people, and another concluding no clear justification exists for recommending vitamin D.In the liver, cholecalciferol (vitamin D3) is converted to calcidiol, which is also known as calcifediol (INN), 25-hydroxycholecalciferol (aka 25-hydroxyvitamin D3 — abbreviated 25(OH)D3). Ergocalciferol (vitamin D2) is converted in the liver to 25-hydroxyergocalciferol (aka 25-hydroxyvitamin D2 — abbreviated 25(OH)D2). These two specific vitamin D metabolites are measured in serum to determine a person's vitamin D status. Part of the calcidiol is converted by the kidneys to calcitriol, the biologically active form of vitamin D. Calcitriol circulates as a hormone in the blood, regulating the concentration of calcium and phosphate in the bloodstream and promoting the healthy growth and remodeling of bone. Calcitriol also affects neuromuscular and immune function.".
- Vitamin_D thumbnail Cholecalciferol-3d.png?width=300.
- Vitamin_D wikiPageExternalLink VitaminD-HealthProfessional.
- Vitamin_D wikiPageExternalLink 475023a.pdf.
- Vitamin_D wikiPageExternalLink vitamin-d-children.
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- Vitamin_D wikiPageRevisionID "706795449".
- Vitamin_D wikiPageWikiLink 22-Dihydroergocalciferol.
- Vitamin_D wikiPageWikiLink 25-Hydroxyvitamin_D3_1-alpha-hydroxylase.
- Vitamin_D wikiPageWikiLink 25-hydroxyergocalciferol.
- Vitamin_D wikiPageWikiLink 7-Dehydrocholesterol.
- Vitamin_D wikiPageWikiLink 7-Dehydrositosterol.
- Vitamin_D wikiPageWikiLink Adaptive_immune_system.
- Vitamin_D wikiPageWikiLink Adolf_Windaus.
- Vitamin_D wikiPageWikiLink Adrenal_gland.
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- Vitamin_D wikiPageWikiLink Agaricus_bisporus.
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- Vitamin_D wikiPageWikiLink Anatomical_terms_of_location.
- Vitamin_D wikiPageWikiLink Anorexia_(symptom).
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- Vitamin_D wikiPageWikiLink Azotemia.
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- Vitamin_D wikiPageWikiLink Calbindin.
- Vitamin_D wikiPageWikiLink Calcifediol.
- Vitamin_D wikiPageWikiLink Calcitonin.
- Vitamin_D wikiPageWikiLink Calcitriol.
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- Vitamin_D wikiPageWikiLink Calcium.
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- Vitamin_D wikiPageWikiLink Cancer.
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- Vitamin_D wikiPageWikiLink Category:Biomolecules.
- Vitamin_D wikiPageWikiLink Category:Secosteroids.
- Vitamin_D wikiPageWikiLink Category:Sun_tanning.
- Vitamin_D wikiPageWikiLink Category:Vitamin_D.
- Vitamin_D wikiPageWikiLink Category:Vitamins.
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- Vitamin_D wikiPageWikiLink Chemical_structure.
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- Vitamin_D wikiPageWikiLink Epidermis.
- Vitamin_D wikiPageWikiLink Ergocalciferol.
- Vitamin_D wikiPageWikiLink Ergosterol.
- Vitamin_D wikiPageWikiLink European_Food_Safety_Authority.
- Vitamin_D wikiPageWikiLink Falling_(accident).
- Vitamin_D wikiPageWikiLink Food_and_Drug_Administration.
- Vitamin_D wikiPageWikiLink Food_fortification.
- Vitamin_D wikiPageWikiLink Francis_Glisson.
- Vitamin_D wikiPageWikiLink Gene_expression.
- Vitamin_D wikiPageWikiLink Gestational_diabetes.
- Vitamin_D wikiPageWikiLink Glutathione.
- Vitamin_D wikiPageWikiLink Gonad.
- Vitamin_D wikiPageWikiLink HIV.
- Vitamin_D wikiPageWikiLink Harry_Steenbock.
- Vitamin_D wikiPageWikiLink Health_Canada.