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nicotinic acid

nicotinic acid (niacin) (nik-ŏ-tin-ik) n. a B vitamin. Nicotinic acid is required in the diet but can also be formed in small amounts in the body from the essential amino acid tryptophan. A deficiency of the vitamin leads to pellagra. Good sources of nicotinic acid are meat, yeast extracts, and pulses. A preparation of nicotinic acid (Niaspan) is used as a lipid-lowering drug when statins alone do not provide adequate control of blood lipid levels.

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"nicotinic acid." A Dictionary of Nursing. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

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nicotinic acid

nicotinic acid (niacin) A vitamin of the vitamin B complex. It can be manufactured by plants and animals from the amino acid tryptophan. The amide derivative, nicotinamide, is a component of the coenzymes NAD and NADP. These take part in many metabolic reactions as hydrogen acceptors. Deficiency of nicotinic acid causes the disease pellagra in humans. Apart from tryptophan-rich protein, good sources are liver and groundnut and sunflower meals.

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"nicotinic acid." A Dictionary of Biology. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

"nicotinic acid." A Dictionary of Biology. . Encyclopedia.com. (June 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid-0

"nicotinic acid." A Dictionary of Biology. . Retrieved June 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid-0

nicotinic acid

nic·o·tin·ic ac·id / ˌnikəˈtinik; -ˈtēnik/ • n. Biochem. a vitamin of the B complex, (C5H4N)COOH, that is widely distributed in foods such as milk, wheat germ, and meat, and can be synthesized in the body from tryptophan. Its deficiency causes pellagra. DERIVATIVES: nic·o·tin·ate / -ˈtēˌnāt/ n.

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"nicotinic acid." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

"nicotinic acid." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (June 24, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid

"nicotinic acid." The Oxford Pocket Dictionary of Current English. . Retrieved June 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid

nicotinic acid

nicotinic acid (niacin) One of the B vitamins. It is unique among this group in that it is synthesized by animal tissues, from tryptophan. A deficiency of this vitamin results in the disease pellagra.

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"nicotinic acid." A Dictionary of Zoology. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

"nicotinic acid." A Dictionary of Zoology. . Encyclopedia.com. (June 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid

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nicotinic acid

nicotinic acid: see coenzyme; vitamin.

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"nicotinic acid." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

"nicotinic acid." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (June 24, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/nicotinic-acid

"nicotinic acid." The Columbia Encyclopedia, 6th ed.. . Retrieved June 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/nicotinic-acid

nicotinic acid

nicotinic acid One of the vitamers of niacin.

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"nicotinic acid." A Dictionary of Food and Nutrition. . Encyclopedia.com. 24 Jun. 2017 <http://www.encyclopedia.com>.

"nicotinic acid." A Dictionary of Food and Nutrition. . Encyclopedia.com. (June 24, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid

"nicotinic acid." A Dictionary of Food and Nutrition. . Retrieved June 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/nicotinic-acid