calciferol

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Related to ergocalciferol: vitamin D3

calciferol:

see vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
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calciferol

[kal′sif·ə‚rōl]
(biochemistry)
A synthetic form of vitamin D that is prepared by ultraviolet irradiation of ergosterol, a vitamin D precursor found in plants.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

calciferol

a fat-soluble steroid, found esp in fish-liver oils, produced by the action of ultraviolet radiation on ergosterol. It increases the absorption of calcium from the intestine and is used in the treatment of rickets. Formula: C28H43OH
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Vitamin D3 (cholecalciferol) was used as an oral vitamin D supplement in most of the studies (12/16), two used vitamin D3 via injection, two used vitamin D fortified yoghurt, and there were no studies that used vitamin D2 (ergocalciferol) or a simple lifestyle intervention such as dietary resources or sun exposure.
Lechtzin, "Failure of high-dose ergocalciferol to correct vitamin D deficiency in adults with cystic fibrosis," American Journal of Respiratory and Critical Care Medicine, vol.
Pepe et al., "Long-term bioavailability after a single oral or intramuscular administration of 600,000 IU of ergocalciferol or cholecalciferol: implications for treatment and prophylaxis," Journal of Clinical Endocrinology and Metabolism, vol.
These results suggested that 5-GMP-Na could upregulate PCPS-induced proinflammatory action; however, ergocalciferol would downregulate that.
The increase in [D.sub.2] levels at three and six months reflects the type of supplement administered (ergocalciferol).
He reported robust dairy intake every day, but he had persistent vitamin D deficiency (25[OH]D level 26ng/mL) despite being compliant with ergocalciferol 50,000 IU twice weekly.
Vitamin D from the diet, vitamin D2 (ergocalciferol) or animal vitamin [D.sub.3] (cholecalciferol), is identical to the skin-synthesized vitamin [D.sub.3].
The patient was initially started on 2000 IU of ergocalciferol daily for two weeks followed by 800 IU per day as maintenance therapy.
Formulations of vitamin D included cholecalciferol ([D.sub.3]) 400 to 2000 IU/d for 4 months to 5 years or 100,000 to 500,000 IU every 3 to 12 months for 1 to 5 years; calcifediol (25(OH) [D.sub.3]) 600 IU/d for 4 years; and ergocalciferol ([D.sub.2]) 400 IU/d for 2 years or 3000 to 300,000 IU every 3 to 12 months for 10 months to 3 years.
Meanwhile, its Vitamin D product portfolio has been extended through the launch of capsules in both branded and generic versions, as well as Ergocalciferol 50,000 IU (international unit) capsules.
In this group the most important compounds in humans are ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3) [1] The biologically active vitamin D is formed in the kidneys by the conversion of a part of calcidiol into calcitriol [2], that is released into the circulation.
A sufficient supply of native vitamin D (25(OH) D) in the form of ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3) is required for its synthesis in the kidney's proximal convoluted tubule (1-3).