Vitamin A deficiency
Loading...
Date
2018-04-14
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
faculty of Basic Medical Science - Libyan International Medical University
Abstract
In this report I will take about vitamin A deficiency in the children and pregnancy women is
called rerinol or anti-blindness vitamin active form is three active forms of vitamin A in the
body are retinol, retinal, and retinoic acid. Sources ; in the egg yolk and milk and other
vegetables , absorption and transport of vitamin A by the liver and, release from the liver
function of vitamin A in the visual cycle ,growth , maintenance of healthy epithelial cells ,
reproduction , antioxidant activity , the uses to treatment tretinoin , isotrerinoin when have
deficiency of vitamin A that will leads to same sings and symptom in eyes and skin
Description
Vitamin A ,called retinel or anti-blindness vitamin active form of vitamin A in body are
retinol,retinal and retinoic acid and several provitamin A carotenoids (most notably betacarotene).have
many function , in visual cycle ; component of the visual pigments of rod and
cone cells, retina ,consists of 11-cis retinal specifically bound to the protein opsin then called
rhodopsin is exposed to light, a occur photochemical isomerization the process tirggers a
nerve impulse that is transmitted by the optic nerve to the brain ,which release of all –trans
retinal and opsin,
Keywords
Citation
Collections
Endorsement
Review
Supplemented By
Referenced By
Creative Commons license
Except where otherwised noted, this item's license is described as Attribution 3.0 United States