Results 291 to 300 of about 5,236,188 (359)
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Nature, 1963
ASCORBIC acid is found in all green plants, although its concentration may vary greatly. Probably the largest concentration recorded is in the endocarp of the walnut, Juglans regia, which contains between 2 and 3 per cent of the fresh weight. The smallest concentration recorded is possibly that in the vegetable marrow, Cucurbita ovifera, 0.002 per cent
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ASCORBIC acid is found in all green plants, although its concentration may vary greatly. Probably the largest concentration recorded is in the endocarp of the walnut, Juglans regia, which contains between 2 and 3 per cent of the fresh weight. The smallest concentration recorded is possibly that in the vegetable marrow, Cucurbita ovifera, 0.002 per cent
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Ascorbic Acid in Steroidogenesis
Nature, 1967THE adrenal glands contain the highest concentration of ascorbic acid of any tissue in the body. Changes in the concentrations of ascorbic acid and cholesterol are related to steroid secretion in the adrenal1. Although it has been suggested that ascorbic acid might play a primary part in Steroidogenesis2, its physiological role in the adrenal has not ...
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1996
Ascorbic acid is a low—molecular weight substance present in all aqueous compartments (cytosol, plasma, extracellular fluid) in animals and plants (Sies et al., 1992). Many invertebrates are not able to synthesize ascorbate, whereas the majority of vertebrates (amphibians, reptiles, birds, and mammals) synthesize ascorbate from glucose (Dabrowski, 1990)
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Ascorbic acid is a low—molecular weight substance present in all aqueous compartments (cytosol, plasma, extracellular fluid) in animals and plants (Sies et al., 1992). Many invertebrates are not able to synthesize ascorbate, whereas the majority of vertebrates (amphibians, reptiles, birds, and mammals) synthesize ascorbate from glucose (Dabrowski, 1990)
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1996
The relationship of ascorbic acid to cancer has, unfortunately, been one of some confusion. While there have been clinical reports suggesting that high doses of ascorbic acid (vitamin C) can exert an inhibitory effect on the development of cancer, these reports have not been adequately corroborated.
Joel L. Schwartz, Gerald Shklar
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The relationship of ascorbic acid to cancer has, unfortunately, been one of some confusion. While there have been clinical reports suggesting that high doses of ascorbic acid (vitamin C) can exert an inhibitory effect on the development of cancer, these reports have not been adequately corroborated.
Joel L. Schwartz, Gerald Shklar
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Ascorbic acid and melanogenesis
British Journal of Dermatology, 1977The ascorbic acid contents of skin, plasma and urine were estimated in 12 vitiligo cases, one albino and 10 normal subjects. All the estimations were repeated after saturation with ascorbic acid. There was no difference between the two groups with regard to the ascorbic acid contents of their plasma or urine.
B V Satyanarayana, Sastry Pb, A V Ratnam
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Annals of Internal Medicine, 1976
Excerpt To the editor: I read with interest the recent paper by Stein, Hasan, and Fox, "Ascorbic Acid-Induced Uricosuria" (Ann InternMed 84:385-388, 1976).
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Excerpt To the editor: I read with interest the recent paper by Stein, Hasan, and Fox, "Ascorbic Acid-Induced Uricosuria" (Ann InternMed 84:385-388, 1976).
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JAMA: The Journal of the American Medical Association, 1973
To the Editor.— Since Sigell and Fless (214:2035, 1970) mentioned the possible role of ascorbic acid in anticoagulant therapy, letters by Rosenthal (215:1671, 1971), Hume et al (219:1479, 1972), and Smith et al (221:1166, 1972) have related observations on the interaction of ascorbic acid in patients, as well as in dogs and rabbits.
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To the Editor.— Since Sigell and Fless (214:2035, 1970) mentioned the possible role of ascorbic acid in anticoagulant therapy, letters by Rosenthal (215:1671, 1971), Hume et al (219:1479, 1972), and Smith et al (221:1166, 1972) have related observations on the interaction of ascorbic acid in patients, as well as in dogs and rabbits.
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Brain Research Reviews, 1993
Ascorbic acid is highly concentrated in the central nervous system. Measurement of the extracellular concentration of ascorbate in animals, mainly by the technique of voltammetry in vivo, has demonstrated fluctuation in release from neuropil, both spontaneously and in response to physical stimulation of the animal and to certain drugs.
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Ascorbic acid is highly concentrated in the central nervous system. Measurement of the extracellular concentration of ascorbate in animals, mainly by the technique of voltammetry in vivo, has demonstrated fluctuation in release from neuropil, both spontaneously and in response to physical stimulation of the animal and to certain drugs.
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Ascorbic acid oxidase and ascorbic acid oxygenase of Myrothecium verrucaria
Archives of Biochemistry and Biophysics, 1965Abstract Ascorbic acid (AA) is oxidized by two soluble enzyme systems in spores and mycelium of the fungus, Myrothecium verrucaria. One system, for which the name AA Oxygenase is suggested, catalyzes the reaction: AA + O2 → oxalic acid + threonic acid. Such a system has not been reported before. The enzyme appears to be specific for AA. Ferrous ions,
G.A. White, R.M. Krupka
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The American Journal of Clinical Nutrition, 1991
In this report literature on transport and function of ascorbic acid in ocular tissues is reviewed. The role of ascorbic acid in various regions of the eye is not well understood. It appears one important function of this compound is protection against oxidative damage, particularly photoinduced damage.
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In this report literature on transport and function of ascorbic acid in ocular tissues is reviewed. The role of ascorbic acid in various regions of the eye is not well understood. It appears one important function of this compound is protection against oxidative damage, particularly photoinduced damage.
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