46 Nucleic Acids Nucleic acids are high molar mass polymers that play an essential role in protein synthesis. 1.â¯Deoxyribonucleic acid (DNA) 2.â¯Ribonucleic acid (RNA) DNA molecule has 2 helical strands. Each strand is made up of nucleotides.
Calcitriol is used to treat hyperparathyroidism (overactive parathyroid glands) and metabolic bone disease in people who have chronic kidney failure and are not receiving dialysis. Calcitriol is also used to treat calcium deficiency (hypocalcemia) and metabolic bone disease in people who are receiving dialysis. Calcitriol is also used to treat calcium deficiency in people with hypoparathyroidism (underactive parathyroid glands) caused by surgery, disease, or other conditions. Calcitriol may also be used for purposes not listed in this medication guide.
Nomenclature [edit]. Calcitriol usually refers specifically to 1,25-dihydroxycholecalciferol, but may also sometimes include 24,25-dihydroxycholecalciferol (when specified), the deactivated form of vitamin D.Because cholecalciferol already has one hydroxyl group, only two are further specified in the nomenclature.any of the effects of calcitriol are mediated by its interaction with the calcitriol receptor, also called the vitamin D receptor or VDR. For instance, the unbound inactive form of the calcitriol receptor in intestinal epithelial cells resides in the cytoplasm.