2 implemented worldwide , and in Zambia all children In this review I endeavour to draw a picture of under 5 years are supposed to receive a mega-dose vitamin A biology which may be relevant to the way oral supplement every 6 months. There have been we use it in adults and children with HIV/AIDS. I many studies which show an association between will attempt to cover some basic science in this f...

The objective of this paper was to review the strategies for lung cancer chemoprevention. A retrospective assessment of the major findings from the most informative lung cancer chemoprevention clinical trials [alpha-tocopherol (vitamin E), beta-carotene trial and beta-carotene and retinol efficacy trial] was employed. Both trials and many others showed no benefit from what was once the prime ca...

According to the European Food Safety Authority, currently, there are no reliable data or robust guidelines available in relation to the micronutrient composition of infant foods. This study evaluated the intake of vitamins A and E of infants from 'ready-to-feed' foods and formulas. Normal phase high performance liquid chromatography was employed for simultaneous quantification of retinyl aceta...

BACKGROUND In many developing countries, children are at high risk of goiter, vitamin A deficiency, and iron deficiency anemia. OBJECTIVE We aimed to develop a stable, efficacious salt fortified with iodine, iron, and vitamin A. DESIGN A novel spray-cooling technique was used with hydrogenated palm oil to package potassium iodate, micronized ferric pyrophosphate, and retinyl palmitate into ...

Biofortification of cassava with the provitamin A carotenoid b-carotene is a potential mechanism for alleviating vitamin A deficiency. Cassava is a staple food in the African diet, but data regarding the human bioavailability of b-carotene from this food are scarce. The objective of the present study was to evaluate provitamin A-enhanced cassava as a source of b-carotene and vitamin A for healt...

Agricultural pesticides often have been cited as a factor affecting indigenous amphibian populations, but possible effects of pesticides and other factors associated with agricultural practices are understood poorly. Adult bullfrogs (Rana catesbeiana) were collected within the Yamaska River basin (Quebec, Canada) in subwatersheds representing low, medium, and high agricultural activities and 53...

PURPOSE Besides being widely used in cosmetics, retinoids are potent therapeutic agents used topically and systemically as anti-acne agents. The aim of this study was to predict with the use of MetaSite the skin metabolism of selected retinoids employed in treatment of skin disorders and found in cosmeceuticals. The following compounds were studied: retinol, retinaldehyde, retinoic acid, retiny...

AIM To evaluate the effect of a high dose vitamin A and E supplementation on corneal re-epithelialisation time, visual acuity and haze following photorefractive keratectomy (PRK). METHODS Two groups of 20 patients who underwent myopic PRK were supplemented with either 25 000 IU retinol palmitate and 230 mg alpha tocopheryl nicotinate or a placebo. Clinical outcomes were evaluated up to 360 da...