![]() ![]() Vitamin D 3 or D 2 is first hydroxylated at position 25 of the molecule by hepatic 25-hydroxylase to hydroxycholecalciferol (25OHD), also called calcifediol or calcidiol. ![]() ![]() The main source of the vitamin in humans is synthesis in the skin, followed by food1. The main biochemical forms are vitamin D 3 (cholecalciferol) and vitamin D 2 (ergocalciferol). In recent years there has been a growing interest in vitamin D, not only because of its role in mineral and bone metabolism, but also because of its extraskeletal effects and the high prevalence of hypovitaminosis D. ![]()
0 Comments
Leave a Reply. |