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Daily consumption of Indian spinach (Basella alba) or sweet potatoes has a positive effect on total-body vitamin A stores in Bangladeshi men.
Daily consumption of cooked, puréed green leafy vegetables or sweet potatoes has a positive effect on vitamin A stores in populations at risk of vitamin A deficiency, as assessed in Bangladeshi men. Expand
The challenge to reach nutritional adequacy for vitamin A: β-carotene bioavailability and conversion--evidence in humans.
  • M. Haskell
  • Biology, Medicine
  • The American journal of clinical nutrition
  • 1 November 2012
The provision of vegetable and fruit sources of β-carotene has significantly increased vitamin A status in women and children in community settings in developing countries; these results support the inclusion of dietary interventions with plant sources ofβ- carotene as a strategy for increasing vitamin A Status in populations at risk of deficiency. Expand
Biomarkers of Nutrition for Development (BOND)—Vitamin A Review1234
The clinical and functional indicators related to eye health and biochemical biomarkers of vitamin A status (i.e., serum retinol, RBP, breast-milk retinols, dose-response tests, isotope dilution methodology, and serum retinyl esters) are described. Expand
Estimating the potential for vitamin A toxicity in women and young children.
The new recommendations for high dose vitamin A supplements for infants and children are unlikely to result in toxic levels even if high dose supplements are inadvertently given monthly, and it is illustrated that a constant supply of vitamin A from breast milk is vital for preventing depletion of liver vitamin A stores between high doses. Expand
Plasma retinol-binding protein predicts plasma retinol concentration in both infected and uninfected Cameroonian women and children.
The RBP:ROH relationship should be considered in surveys using RBP to assess VA status, and use of population-specific RBP cutoffs may be advisable. Expand
Recovery from impaired dark adaptation in nightblind pregnant Nepali women who receive small daily doses of vitamin A as amaranth leaves, carrots, goat liver, vitamin A-fortified rice, or retinyl
Improvement in dark adaptation did not differ significantly between women who received vitamin A as liver, amaranth leaves, carrots, or retinyl palmitate, and in a comparison group of nonnightblind pregnant women. Expand
Plasma kinetics of an oral dose of [2H4]retinyl acetate in human subjects with estimated low or high total body stores of vitamin A.
The size of hepatic vitamin A reserves does not appear to affect equilibration time within the range of values observed, and the fraction of dose in plasma was plotted against time, and biexponential equations were fit to the kinetic data by using the time points from 24 h through day 90. Expand
Assessment of vitamin A status by the deuterated-retinol-dilution technique and comparison with hepatic vitamin A concentration in Bangladeshi surgical patients.
The results indicate that the deuterated-retinol-dilution (DRD) technique provided a very good estimate of hepatic vitamin A reserves for this population of Bangladeshi surgical patients, however, a wide prediction interval was observed for estimates of liver biopsy reserves for individual subjects. Expand
Handbook on Vitamin A Tracer Dilution Methods to Assess Status and Evaluate Intervention Programs.
HarvestPlus Technical Monographs are designed to provide a forum for HarvestPlus research outputs. Technical Monographs can be of two kinds: • state-of-the-art reviews that help to establish andExpand
Supplementation with iron and riboflavin enhances dark adaptation response to vitamin A-fortified rice in iron-deficient, pregnant, nightblind Nepali women.
Iron deficiency may limit the efficacy of vitamin A to normalize dark adaptation in pregnant Nepali women, and further studies are needed to assess the effect of simultaneous delivery of iron and vitamin A for the treatment of nightblindness. Expand