Ads
related to: niacin deficiency and anxiety disorderswalmart.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
Hartnup disease (also known as "pellagra-like dermatosis" [1] and "Hartnup disorder" [2]) is an autosomal recessive [3] metabolic disorder affecting the absorption of nonpolar amino acids (particularly tryptophan that can be, in turn, converted into serotonin, melatonin, and niacin).
Also known as kynureninase deficiency, this extremely rare inherited disorder is caused by the defective enzyme kynureninase which leads to a block in the pathway from tryptophan to niacin (nicotinic acid). As a result, tryptophan is no longer a source of niacin, hence leading to pellagra (niacin deficiency).
A man with pellagra, which is caused by a chronic lack of vitamin B 3 in the diet. Severe deficiency of niacin in the diet causes the disease pellagra, characterized by diarrhea, sun-sensitive dermatitis involving hyperpigmentation and thickening of the skin (see image), inflammation of the mouth and tongue, delirium, dementia, and if left untreated, death. [7]
About 1 in 4 Americans have too much niacin in their body from eating meats and nuts, ... But even though niacin deficiency is a rarity in the U.S., some people do take it as a dietary supplement ...
Vitamin B 3, also known as niacin, includes both nicotinamide as well as nicotinic acid, both of which function in many biological oxidization and reduction reactions within the body. Niacin is involved in the synthesis of fatty acids and cholesterol, known mediators of brain biochemistry, and in effect, of cognitive function. [21]
The body also converts niacin and the amino acid tryptophan into NAD, says Martens — these are both found in some foods and available as supplements, but may not be as effective.
Ads
related to: niacin deficiency and anxiety disorderswalmart.com has been visited by 1M+ users in the past month