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No enhancing effect of vitamin A on iron absorption in humans
Vitamin A retinyl palmitate iron absorption
2016/12/27
Vitamin A and β-carotene were recently reported to enhance iron absorption by counteracting the inhibitory effect of phytic acid in cereal-based meals and of polyphenol-containing beverages on nonheme...
Several studies have reported that even a moderate daily dose of supplementary vitamin C (200 mg) induces the formation of genotoxins from lipid hydroperoxides, thereby resulting in DNA damage and ini...
Spread supplemented with moderate doses of vitamin E and carotenoids reduces lipid peroxidation in healthy, nonsmoking adults
Antioxidant capacity oxidation resistance malondialdehyde
2017/1/4
High doses of vitamin E have been shown to decrease lipid peroxidation in persons under oxidative stress. At present, the data are insufficient to predict whether lower doses offer the same benefit in...
Long-latency deficiency disease: insights from calcium and vitamin D
index disease calcium vitamin D
2017/1/4
Nutrient intake recommendations and national nutritional policies have focused primarily on prevention of short-latency deficiency diseases. Most nutrient intake recommendations today are based on pre...
B vitamin status and concentrations of homocysteine and methylmalonic acid in elderly German women
women dietary intake vitamins
2017/1/4
Prior investigations found that elderly persons are at higher risk than are younger persons for B vitamin deficiency, which leads to elevated plasma total homocysteine (tHcy) concentrations that are a...
Effect of orange juice intake on vitamin C concentrations and biomarkers of antioxidant status in humans
Orange juice vitamin C bioavailability
2017/1/4
The objectives were to assess the bioavailability of vitamin C from orange juice and its influence on plasma vitamin C and 8-epi-prostaglandin F2α (8-epi-PGF2α) concentrations in a healthy human popul...
Vitamin B-12 status, particularly holotranscobalamin II and methylmalonic acid concentrations, and hyperhomocysteinemia in vegetarians
Vitamin B-12 homocysteine holotranscobalamin
2017/1/3
The study cohort included 66 lactovegetarians or lactoovovegetarians (LV-LOV group), 29 vegans, and 79 omnivores. Total vitamin B-12, methylmalonic acid, holotranscobalamin II, and total homocysteine ...
Fortification of orange juice with vitamin D: a novel approach for enhancing vitamin D nutritional health
Vitamin D deficiency milk orange juice
2017/1/3
Fortification of milk with vitamin D may not be adequate for satisfying the vitamin D requirement because of variability in vitamin D content after fortification and because many persons have milk all...
Low vitamin B-12 concentrations in patients without anemia: the effect of folic acid fortification of grain
Pernicious anemia vitamin B-12 cobalamin
2017/1/3
In some patients with vitamin B-12 deficiency mistakenly treated with folic acid, anemia resolved but neurologic complications became worse (masking). Fortification of enriched cereal grains with foli...
Riboflavin is unique among the water-soluble vitamins in that milk and dairy products make the greatest contribution to its intake in Western diets. Meat and fish are also good sources of riboflavin, ...
Vitamin D supplementation and bone mineral density in early postmenopausal women
Menopause vitamin D bone density
2017/1/3
One hundred eighty-seven women who were ≥ 1 y postmenopausal were randomly assigned to take either 1000 mg Ca/d after the evening meal or 1000 mg Ca/d plus 10 000 U vitamin D2/wk in a double-blind, pl...
Screening for vitamin B-12 and folate deficiency in older persons
Screening folate vitamin B-12
2017/1/3
Vitamin B-12 deficiency is usually accompanied by elevated concentrations of serum total homocysteine (tHcy) and methylmalonic acid (MMA). Folate deficiency also results in elevated tHcy. Measurement ...
Potential host-defense role of a human milk vitamin B-12–binding protein, haptocorrin, in the gastrointestinal tract of breastfed infants, as assessed with porcine haptocorrin in vitro
breast milk breastfed infants breastfeeding
2017/1/3
Limited information exists on the biological role of a vitamin B-12–binding protein, haptocorrin, in human milk. The expression of haptocorrin by human mammary epithelial cells and its presence in hum...
Assessment of vitamin A status with the relative-dose-response test in Peruvian children recovering from pneumonia
Vitamin A retinol acute phase response pneumonia C-reactive protein CRP relative-dose-response test RDR test children Peru
2016/12/20
Background: The relative-dose-response (RDR) test is used to identify subjects with marginal liver vitamin A stores, but its use has not been evaluated during episodes of infection.Objective:...
Preconception homocysteine and B vitamin status and birth outcomes in Chinese women
Homocysteine vitamin B-12 vitamin B-6 preterm birth low birth weight pregnancy pregnancy outcome China
2016/12/20
Background: The associations between homocysteine, B vitamin status, and pregnancy outcomes have not been examined prospectively.Objective: We assessed the associations of preconception homo...