Alfacalcidol cas 41294-56-8

Alfacalcidol is an active metabolite of Vitamin D, which performs important functions in regulation of the calcium balance and the bone metabolism. Alfacalcidol is Vitamin D-hormone analog which is activated by the enzyme 25-hydroxylase in the liver for systemic and in osteoblasts for local D-hormone actions. It possesses a unique pattern of pleiotropic effects on, e.g. gut, bone, pararthyroids, muscle and brain. Alfacalcidol is superior to plain vitamin D (cholecalciferol) because the final kidney activation of the latter is regulated by a negative feedback mechanism.

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Falecalcitriol; Lexacalcitol; Tisocalcitate; Seocalcitol; Eldecalcitol; Paricalcitol; Calcifediol monohydrate; Calcitriol; Maxacalcitol; Calcipotriol; Doxercalciferol; Inecalcitol

[1]. Shiraishi et al (2000) Alfacalcidol inhibits bone resorption and stmulates formation in an ovariectomized rat model of osteoporosis: Distinct actions from estrogen. Journal of Bone and Mineral Research. 15 770.

[2]. Ringe JD, Schacht E. et al. Prevention and therapy of osteoporosis: the roles of plain vitamin D and alfacalcidol. Rheumatol Int. 2004 Jul;24(4):189-97.