NUTR 3210 Study Guide - Osteomalacia, Megavitamin Therapy, Parafollicular Cell

• School: University of Guelph
• Department: Nutrition
• Course: NUTR 3210
• Professor: Genevieve Newton

Document Summary

Summary micronutrients 1: vitamin a, vitamin d and iodide. When vitamins aren"t present in diet or aren"t absorbed or utilized properly, a deficiency disease will result. Vitamins can"t be made, you need to get them from the diet. Type ii shr (steroid hormone receptors: present in the nucleus of the cell, bind to both steroid hormones and non-steroid hormone ligands, ligand/receptor complex forms a transcription factor that can up- or down-regulate the expression of genes. Most of the time it will up-regulate: ones of interest to us: thyroid hormone (iodine), retinoic acid (vitamin a), calcitriol (vitamin. It acts as an antioxidant in the plant, but not so much in animals: animal forms are retinyl esters (mainly retinyl palmitate; storage form in animals). Then it can either undergo cleavage to retinol (see above) or nothing happens to it and it gets incorporated into the chylomicrons: retinyl esters get digested to retinol via pancreatic retinyl esterase and then retinol enters the.