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单词 niacin
释义

niacin


ni·a·cin

N0093100 (nī′ə-sĭn)n. A white crystalline acid, C6H5NO2, of the vitamin B complex that is found in meat, fish, legumes, and whole-grain foods and is used to treat and prevent pellagra. Also called nicotinic acid.
[ni(cotinic) ac(id) + -in.]

niacin

(ˈnaɪəsɪn) n (Biochemistry) another name for nicotinic acid[C20: from ni(cotinic) ac(id) + -in]

nic′otin′ic ac′id



n. a crystalline acid, C6H5NO2, that is a component of the vitamin B complex, occurring in animal products, yeast, etc. Also called niacin, vitamin B3. [1885–90]

ni·a·cin

(nī′ə-sĭn) A vitamin belonging to the vitamin B complex that is important in carbohydrate metabolism. It is found in liver, fish, and whole-grain foods.
Thesaurus
Noun1.niacin - a B vitamin essential for the normal function of the nervous system and the gastrointestinal tractnicotinic acidB complex, B vitamin, B-complex vitamin, vitamin B, vitamin B complex, B - originally thought to be a single vitamin but now separated into several B vitamins
Translations

niacin


niacin:

see coenzymecoenzyme
, any one of a group of relatively small organic molecules required for the catalytic function of certain enzymes. A coenzyme may either be attached by covalent bonds to a particular enzyme or exist freely in solution, but in either case it participates intimately in
..... Click the link for more information. ; vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
..... Click the link for more information. .

niacin

[′nī·ə·sən] (biochemistry) nicotinic acid

niacin


niacin

 [ni´ah-sin] a water-soluble vitamin of the B complex (see vitamin), found in various animal and plant tissues, especially liver, yeast, bran, peanuts, lean meats, fish, and poultry. A well balanced diet usually supplies more than the daily requirement. It is required by the body for the synthesis of the coenzymes NAD and NADP, which are required for many oxidation-reduction reactions. Deficiency of niacin produces pellagra, and administration of niacin is used to prevent and treat that condition. It is also used to treat hyperlipidemia. Called also nicotinic acid" >nicotinic acid.

nic·o·tin·ic ac·id

(nik'ō-tin'ik as'id), Part of the vitamin B complex; used in the prevention and treatment of pellagra, as a vasodilator, and in hyperlipidemia, in which it lowers cholesterol and acts an agent to elevate levels of high-density lipoprotein. Synonym(s): anti-black-tongue factor, antipellagra factor, niacin, pellagra-preventing factor, vitamin PP

niacin

(nī′ə-sĭn)n. A white crystalline acid, C6H5NO2, of the vitamin B complex that is found in meat, fish, legumes, and whole-grain foods and is used to treat and prevent pellagra. Also called nicotinic acid.

niacin

A water-soluble “B-complex” vitamin integrated in the coenzyme nicotinamide adenine dinucleotide (NAD), an H+ acceptor for dehydrogenases which is formed in the body from tryptophan; it has been used in management of alcoholism, migraines, and to improve lipid profiles.
 
Deficiency
Anorexia, glossitis, headaches, insomnia, rash, depression, pseudodementia.
 
Toxicity
Skin flushing, arrhythmias, defects in glucose and urea metabolism, diarrhoea, nausea, gastric bleeding, headaches, itching, hepatic toxicity, psychotic reactions.
Normal
> 2.5 mg/24 hour in urine.
Sources
High-protein foods—e.g., fish, poultry, meats, liver, yeast, enriched bread, cereals.
Niacin decreased the risks of CAD by improving the lipid profile: decreased LDL-C by 15%, decreased TGs by 30%, decreased Apo B by 16%, decreased Lp(1) by 25%, and increased HDL-C by 20%; it is believed by some alternative health advocates to be useful for anxiety, arthritis, autism, depression, DM, hypoglycemia, and schizophrenia.

nic·o·tin·ic ac·id

(nik'ō-tin'ik as'id) A part of the vitamin B3 complex; used in the prevention and treatment of pellagra, as a vasodilator, and as an HDL-raising agent; taken by some people in erroneous idea it will hide drug use in urine tests; such use can elicit GI complaints, dizziness, and loss of consciousness.
Synonym(s): niacin.

niacin

Nicotinamide, one of the B group of vitamins. Nicotinic acid. Niacin is present in liver, meat, grains and legumes. It is a constituent of coenzymes involved in oxidation-reduction reactions. Deficiency causes PELLAGRA. Niacin is being used in the treatment of high blood cholesterol levels. The drug is on the WHO official list.

niacin

see NICOTINIC ACID.

nic·o·tin·ic ac·id

(nik'ō-tin'ik as'id) A part of the vitamin B3 complex; used in the prevention and treatment of pellagra, as a vasodilator, and as an agent to increase levels of high-density lipoproteins.
Synonym(s): niacin.

niacin


Related to niacin: pantothenic acid, niacin deficiency
  • noun

Synonyms for niacin

noun a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract

Synonyms

  • nicotinic acid

Related Words

  • B complex
  • B vitamin
  • B-complex vitamin
  • vitamin B
  • vitamin B complex
  • B
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更新时间：2024/12/23 18:35:12