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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).
Carcinoid syndrome thus may produce niacin deficiency and clinical manifestations of pellagra. Anti-tuberculosis medication tends to bind to vitamin B 6 and reduce niacin synthesis, since B 6 (pyridoxine) is a required cofactor in the tryptophan-to-niacin reaction. Several therapeutic drugs can provoke pellagra.
Niacin: Niacin deficiency, along with a deficiency of tryptophan, causes pellagra. Symptoms include aggression, dermatitis, insomnia, weakness, mental confusion, and diarrhea. In advanced cases, pellagra may lead to dementia and death (the 3(+1) D's: dermatitis, diarrhea, dementia, and death). Vitamin B 5: Pantothenic acid
Zeism is any condition attributed to excessive use of maize (corn) in the diet, such as pellagra.Maize is low in zinc, niacin, and tryptophan, and the limited niacin found in maize is not absorbed in the digestive tract unless it has been treated with alkalis, as in the preparation of tortillas.
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Niacin deficiency is a consequence of a diet low in both niacin and the amino acid tryptophan, a precursor for the vitamin. Low plasma tryptophan is a non-specific indicator, meaning it can have other causes. The signs and symptoms of niacin deficiency start to revert within days of oral supplementation with large amounts of the vitamin. [23] [24]
In a Facebook post this week, the Ohio Division of Wildlife reports that black-bellied whistling-ducks have been spotted with ducklings at a wildlife area in Wayne County, northwest of Tuscarawas ...
Nicotinamide (INN, BAN UK [2]) or niacinamide (USAN US) is a form of vitamin B 3 found in food and used as a dietary supplement and medication. [3] [4] [5] As a supplement, it is used orally (swallowed by mouth) to prevent and treat pellagra (niacin deficiency). [4]