calciferol


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Related to calciferol: ergocalciferol

calciferol

 [kal-sif´er-ol]
1. see vitamin D.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

er·go·cal·cif·er·ol

(er'gō-kal-sif'ĕr-ol),
Activated ergosterol, the vitamin D of plant origin; it arises from ultraviolet irradiation of ergosterol, which is cleaved at the 9,10 bond and develops a double bond between C-10 and C-19; used in prophylaxis and treatment of vitamin D deficiency.
Farlex Partner Medical Dictionary © Farlex 2012

calciferol

(kăl-sĭf′ə-rôl′, -rōl′)
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

calciferol

A vitamin D derived from steroids by breaking the B ring’s 9-10 bond (e.g., cholecalciferol and ergocalciferol), which is produced by the body when exposed to UV light. Supplemental vitamin D3 reduces all-cause mortality, especially in elderly women, an effect not seen with vitamin D2, alfacalcidol or calcitriol (intrinsic vitamin D). However, too much or too little vitamin D is associated with increased mortality in a U-shaped risk curve.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

calciferol

Vitamin D. A fat-soluble vitamin necessary for the absorption of calcium from the intestine. Deficiency causes RICKETS in infants and OSTEOMALACIA in adults.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

calciferol

or

vitamin D2

a compound that has vitamin D properties and is obtained by ultraviolet irradiation of ergosterol.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

er·go·cal·cif·er·ol

(ĕr'gō-kal-sif'ĕr-ol)
Activated ergosterol, the vitamin D of plant origin; used in prophylaxis and treatment of vitamin D deficiency.
Synonym(s): calciferol, vitamin D2.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The involution of tissues and organs in elderly people may also reduce the synthesis of active calciferol metabolites (16)(17)(18).
Does calciferol have a liquifying action on caseum?
* Vitamin [D.sub.2] is usually labeled vitamin D or calciferol. Vitamin [D.sub.2] is only 30% as effective as vitamin [D.sub.3] (doses should be adjusted accordingly).
Vitamin D (Calciferol) comprises a group of fat-soluble sterols.
All-trans retinoic acid antagonizes the action of calciferol and its active metabolite, 1,25-dihydroxycholecaliferol, in rats.
(5.) Vasavada NB: studies on proteins and amino acid in food stuffs and calciferol in edible oils of Gujarat.
It was shown that calciferols have immunomodulatory effects that directly affect immune cell maturation and cytokine synthesis.
Parathyroid hormone, calcitonin and the calciferols. In: William RH editors.
It occurs in chemical forms called calciferols. The natural, active form is D3, which has many "hormonal actions" in the body.