Factors Affecting Absorption, Transport, and Storage of Vitamin A

Ames, Stanley R.

doi:10.1093/ajcn/22.7.934

Cited by 48 publications

(13 citation statements)

References 3 publications

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“…This finding agrees with that reported in our earlier study (Basu et al, 1976 (Ames, 1969;Bauernfeind et al, 1974) and there was no correlation between the serum concentrations of vitamins A and E in our patients.…”

supporting

confidence: 94%

Vitamin A, zinc and lung cancer

Atukorala¹,

Basu²,

Dickerson³

et al. 1979

Br J Cancer

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Summary.-Serum vitamin A concentrations were measured in 26 newly diagnosed lung -cancer patients and found to be significantlv lower than those of patients of similar age with either non-malignant lung or non-lung diseases. The levels of vitamin A in the lung-cancer patients, but not in the controls, were significantly correlated with serum concentrations of retinol-binding protein (RBP) and zinc. It is suggested that low levels of zinc might reduce the synthesis of RBP and thus reduce the mobilization of vitamin A from the liver.

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supporting

confidence: 94%

Vitamin A, zinc and lung cancer

Atukorala¹,

Basu²,

Dickerson³

et al. 1979

Br J Cancer

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“…Emulsification has been suggested to be effective in improving absorption of lipophilic components (24,25). Our results suggest that carotenoids are more easily incorporated into an O/W emulsion of mayonnaise because of its amphiphilic property.…”

Section: Discussionmentioning

confidence: 63%

Effects of Mayonnaise on Postprandial Serum Lutein/Zeaxanthin and β-Carotene Concentrations in Humans

Takeda

Masuda

Usuda

et al. 2009

J Nutr Sci Vitaminol

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Summary To clarify the effects of different physical forms of oil on postprandial serum lutein/zeaxanthin and ␤ -carotene concentrations, we performed a vegetable meal loading test. Eighteen healthy subjects participated in the test, which consisted of broccoli as a control (CON) meal, broccoli with oil (OIL), and broccoli with mayonnaise (MS), consumed in random order. After collection of fasting blood samples, subjects consumed one of the three test meals. Fasting and postprandial changes in serum carotenoids were assessed 2, 4, and 6 h after ingestion of each test meal. Serum lutein/zeaxanthin and ␤ -carotene concentrations were measured. Although no significant change was noted after the CON meal, the serum lutein/zeaxanthin concentration was higher at 4 h after consumption of the OIL meal, and at 2, 4 and 6 h after consumption of the MS meal, as compared with the fasting state. Serum ␤ -carotene concentrations did not change after ingestion of either the CON or the OIL meal but were elevated 2, 4, and 6 h after MS ingestion as compared with the fasting state. The incremental areas under the curves (IAUCs) of serum lutein/zeaxanthin and ␤ -carotene concentrations were higher after the MS meal than after the CON meal. IAUCs after the OIL meal exhibited no statistically significant differences from the CON and MS meals. We suggest that mayonnaise contributes to increase serum lutein/zeaxanthin and ␤ -carotene concentrations when consumed with vegetables rich in these carotenoids.

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“…et al 1974). Its antioxidative properties enhance the utilization of vitamin A up to 6 times (Ames 1969).The aim of the present work was to investigate the levels of vitamins A. E and carotene in the plasma and livers of bovine foetuses and their mothers with possible practical use of the findings in diagnosing and prevention of hypovitaminoses in the newborn and young calves. …”

mentioning

confidence: 99%

“…et al 1974). Its antioxidative properties enhance the utilization of vitamin A up to 6 times (Ames 1969).…”

mentioning

confidence: 99%

Plasma Levels of Vitamins A, E and Carotene in Cows in Late Pregnancy and in Their Foetuses

Jagos¹,

Bouda²,

Geryk³

1979

Acta Vet. Brno

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Jagoi P .• J. Bouda. J. Geryk: The Plasma LefJeZs of Vitamin A. E and Carotene in Cows in Late Pregnancy and in Their Foetuses. Acta vet. Brno. 48.1979: 19-23. Experiments involving 20 cows in late pregnancy and their foteuses aged 8-9 months were conducted to study the blood plasma content of the vitamins A. E and carotene and the liver vitamin A content of these individuals.The vitamin A content of the foetal plasma wss more than two times lower than that of the dams. and the foetal liver content of vitamin A was approximately ten times lower than the values found in the dams.Similarly. much lower plasma content of vitamin E and carotene were determined in the foetuses than in their mothers. These differences were statistically significant.The results of the study indicated that the bovine foetus and newborn calf have only minimum stores of the above-mentioned vitamins and they depend on early and abundant feeding of colostrum to meet their requirements. Blood plasma. liver. mother. foetus. vitamins A. E.An important part in the frequent calf diseases occurring predominantly in winter and spring is ascribed to the noninfectious factors including hypovitaminosis A. Decreased resistance of the organism and frequent diseases of the newborn animals have been known to result from the hypovitaminosis A (Moore 1957;Dvorak 1959Dvorak . 1960 Pi'ibyl 1963; Spratling et a1. 1965; Seawright 1966;Rosenberger 1970; Radominski et a1. 1970; Eaton et a1. 1972). Calves are born with low plasma levels and stores of vitamin A and carotene which indicates a low transfer of these substances through the placenta (Moore 1957). Low vitamin A content was also found in the livers of bovine and equine foetuses (Harms 1951). The livers of bovine foetuses contained 1.5 % of the amount of vitamin A found in the livers of adult cattle. Somewhat higher percentage -4 % -was found in equine foetuses.A certain amount of vitamin A is necessary for the normal development of the foetus and its reserve of this vitamin during the first hours of postnatal life is important for survival and health of the newborn calf in the early postnatal period (Brantstetter et a1. 1973). This follows from the observation of deaths in calves fed no colostrum which had extremely low vitamin A reserves (Moore 1957). In livers of 6 newborn calves an average of 7.3 pg of vitamin A per 1 g liver tissue was found while in their mothers 37 times higher content was detected (Brantstetter et al. 1973). Similar vitamin A amounts were also found in bovine foetuses aged 110-240 days (Baetze and Hubert 1974). Nevertheless. in the blood serum of these foetuses 19.9 pg per 100 ml of vitamin A were found; this value is in good agreement with findings of Baker et a1. (1953) and Spielman et a1. (1946).Good performance of young calves requires also vitamin E supporting mainly the muscular function (Kursa et a1. 1969;Jenkins. Hidiroglou 1972;Vrzgula et al. 1972;Lannek 1973; Koval! et al. 1974). Its antioxidative properties enhance the utilization of vitamin A up to 6 time...

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Factors Affecting Absorption, Transport, and Storage of Vitamin A

Cited by 48 publications

References 3 publications

Vitamin A, zinc and lung cancer

Vitamin A, zinc and lung cancer

Effects of Mayonnaise on Postprandial Serum Lutein/Zeaxanthin and β-Carotene Concentrations in Humans

Plasma Levels of Vitamins A, E and Carotene in Cows in Late Pregnancy and in Their Foetuses

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