retinol

ret·i·nol

R0193800 (rĕt′n-ôl′, -ōl′, -ŏl′)n. See vitamin A₁.

retinol

(ˈrɛtɪˌnɒl) n1. (Elements & Compounds) another name for vitamin A22. (Elements & Compounds) another name for rosin oil[C19: from Greek rhētinē resin + -ol¹]

vitamin A

n. a yellow, fat-soluble terpene alcohol, C₂₀H₃₀O, obtained from carotene and occurring in green and yellow vegetables, egg yolk, etc.: essential to the protection of epithelial tissue and the prevention of night blindness. Also called vitamin A₁, retinol. [1920–25]

vitamin A2

n. a yellow oil, C₂₀H₂₈O, similar to vitamin A, obtained from fish liver.

ret·i·nol

(rĕt′n-ôl′) See vitamin A.

Thesaurus

Noun

retinol - an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotenevitamin A1antiophthalmic factor, axerophthol, vitamin A, A - any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

Translations

retinol

retinol:

see Vitamin A under 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.
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Retinol

(also called axerophthol or vitamin A), an isoprenoid whose chemical formula is C₂₀H₃₀O. Retinol is soluble in nonpolar organic solvents, insoluble in water, and has a melting point of 63°–64°C. In animals and man, it is converted from the carotene in food and stored mainly in the liver; it is particularly abundant in the liver of whales and fish and in fish oil.

The most important biological function of retinol is its participation in the form of retinal in the visual process. A retinol deficiency results in impairment of twilight vision (night blindness, or nyctalopia) and in injury to epithelial tissue, as in xe-rophthalmia. An excess of retinol causes a variety of metabolic disturbances, an accumulation of retinol in the hydrophobic fraction of cell membranes, and destruction of these membranes. Retinol is commercially synthesized from β-ionone. Retinol is sometimes called vitamin A₁; its dehydro derivative C₂₀H₂₈O is called vitamin A₂. Retinal₁ and retinal₂ are distinguished accordingly.

retinol

[′ret·ən‚ȯl] (biochemistry) vitamin A

retinol

[ret´ĭ-nol] vitamin A₁; the form of vitamin A found in mammals, which is reversibly dehydrogenated by enzymatic action into its aldehyde, retinal. See vitamin.

ret·i·nol

(ret'i-nol), A half-carotene; an intermediate in the vision cycle, it also plays a role in growth and differentiation. Synonym(s): vitamin A1 alcohol, vitamin A1

retinol

(rĕt′n-ôl′, -ōl′, -ŏl′)n. See vitamin A.

ret·i·nol

(ret'i-nol) An intermediate in the vision cycle, it also plays a role in growth and differentiation; a vitamin A₁ alcohol.

retinol

The common form of vitamin A found in animal and fish livers and other foods of animal origin. It is easily converted in the body into RETINAL. The drug is on the WHO official list.

retinol

see VITAMIN A.

Retinol

Another name for vitamin A.Mentioned in: Vitamin Toxicity

vitamin A deficiency

A deficiency of vitamin A (also called retinol) leads to interference with growth, atrophy of epithelial tissues resulting in keratomalacia, corneal ulcerations, xerophthalmia with Bitot's spots, reduced resistance to infection of mucous membranes, and abnormal production and regeneration of rhodopsin resulting in night blindness. Management includes a balanced diet and may require large vitamin A supplement with a topical antibiotic to prevent secondary infections. See carotene; hemeralopia.

Patient discussion about retinol

Q. Can a food rich in vitamin B12 will help for his depression or vitamin B12 pills are always required? Hi all…..having one question related to my friends depression and its relation to vitamin B12, as a medicine given to him by his Doctor. Can a food rich in vitamin B12 will help for his depression or vitamin B12 pills are always required?A. Yes low level of vitamin B12 is associated with depression. You can complete its deficiency by having good diet which will cover the B12 requirements. What happens that depressed people tend to eat less of healthy food and which reduces the B12. So, it again reduces the capacity to fight against the depression.

Q. Can someone give me some information on over intake of Vitamin A and its complications in future? I am having short sightedness. I am wearing specks for the past 3 years. Last week my eye sight had doubled. I never thought to control my eye sight by having a good diet, which is rich in vitamin A. Now I am willing to have vitamin A in tablets and I doubt the adverse effects if taken in excess. Can someone give me some information on over intake of Vitamin A and its complications in future?A. Having tablets will fortify you with vitamin A but long term intake will lead to show the side effects of over intake. You can have these vitamin tablets as per your doctor’s prescription. But you must have them as a diet intake which will keep your vitamin intake balanced and will not lead to any complications. But the over intake of vitamins can lead to vitamin A toxicity. This can show symptoms as fatigue, muscle pain, depression, Fever and liver anemia.
http://www.youtube.com/watch?v=EOVwmGvQI5k&eurl=http://www.imedix.com/health_community/vEOVwmGvQI5k_eye?q=short%20eye%20sight&feature=player_embedded

Q. What is a normal Vitamin D level in an 84 year old woman? How would one correct a level of 50 in a Vitamin D level test?A.

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Patient discussion about retinol

retinol

Synonyms for retinol

noun an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene

Synonyms

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