calciferol


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Related to calciferol: ergocalciferol

calciferol

 [kal-sif´er-ol]
1. see vitamin D.

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.

calciferol

/cal·cif·er·ol/ (kal-sif´er-ol)
1. a compound having vitamin D activity, e.g., cholecalciferol or ergocalciferol.

calciferol

(kăl-sĭf′ə-rôl′, -rōl′)

calciferol

[kalsif′ərôl]
Etymology: L, calx, lime, ferre, to bear
a fat-soluble, crystalline unsaturated alcohol produced by ultraviolet irradiation of ergosterol in plants. It is used as a dietary supplement in the prophylaxis and treatment of rickets, osteomalacia, and other hypocalcemic disorders. Also called ergocalciferol, oleovitamin D2, vitamin D2. See also rickets, viosterol.

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.

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.

calciferol

or

vitamin D2

a compound that has vitamin D properties and is obtained by ultraviolet irradiation of ergosterol.

calciferol

vitamin D synthesized within skin under influence of sunlight; see ergocalciferol

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.

calciferol

vitamin d2; ergocalciferol.

calciferol-25-hydroxylase
a hepatic microsomal enzyme which controls the conversion of cholecalciferol to 25-hydroxycholecalciferol.
References in periodicals archive ?
13), who studied an elderly population carefully selected to exclude any influence other than age on calciferol metabolism, deny that there are variations in levels of this hormone which can be correlated with age.
Does calciferol have a liquifying action on caseum?
Tenders are invited for Calciferol Grannules 60000 Iu Sachet/ Tab Or Cap.
Vasavada NB: studies on proteins and amino acid in food stuffs and calciferol in edible oils of Gujarat.
Parathyroid hormone, calcitonin, and the calciferols.