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Doxercalciferol (or 1-hydroxyergocalciferol, trade name Hectorol) is drug for secondary hyperparathyroidism and metabolic bone disease. [1] It is a synthetic analog of ergocalciferol (vitamin D 2). It suppresses parathyroid synthesis and secretion. [2] Doxercalciferol is the vitamin D 2 analogue of alfacalcidol. [3]
The natural, active form of vitamin D is calcitriol (1,25-dihydroxycholecalciferol). This molecule and other naturally occurring forms of vitamin D, including its precursors and metabolites, have been modified to synthesize pharmaceuticals with potentially greater, or selective, therapeutic actions. [1] [2] [3] [4]
Calcitriol was identified as the active form of vitamin D in 1971 and the drug was approved for medical use in the United States in 1978. [7] It is available as a generic medication . [ 12 ] In 2022, it was the 254th most commonly prescribed medication in the United States, with more than 1 million prescriptions.
The active vitamin D metabolite, calcitriol, exerts its biological effects by binding to the vitamin D receptor (VDR), which is primarily located in the nuclei of target cells. [ 1 ] [ 13 ] When calcitriol binds to the VDR, it enables the receptor to act as a transcription factor , modulating the gene expression of transport proteins involved ...
Alfacalcidol (or 1-hydroxycholecalciferol) is an analogue of vitamin D used for supplementation in humans and as a poultry feed additive.. Alfacalcidol has a weaker impact on calcium metabolism [3] and parathyroid hormone levels [4] than calcitriol; but significant effects on the immune system, including regulatory T cells. [5]
Image credits: demimoore In addition, the usage of Ozempic has dominated so much of Hollywood that “celebrity and high profile clients” are hosting GLP-1 “parties” of sorts where nurse ...
Paricalcitol (chemically it is 19-nor-1,25-(OH) 2-vitamin D 2.Marketed by Abbott Laboratories under the trade name Zemplar) is a drug used for the prevention and treatment of secondary hyperparathyroidism (excessive secretion of parathyroid hormone) associated with chronic kidney failure.
A calcimimetic is a pharmaceutical drug that mimics the action of calcium on tissues, by allosteric activation of the calcium-sensing receptor that is expressed in various human organ tissues. Calcimimetics are used to treat secondary hyperparathyroidism (SHPT). [1] [2]