Vitamin E (α-tocopherol) is a natural antioxidant very useful for preventing the harmful effects of UV sun rays as skin aging and cancers. In this study, different MLV formulations were made using egg lecithin and varying molar ratios of α-tocopherol and/or cholesterol, and their encapsulation efficiencies were determined. The best liposomal product was incorporated into a carbomer 980 gel. The...

noise induced hearing loss (nihl) is one of the most important occupational disease worldwide. nihl has been found potentiate by simultaneous carbon monoxide (co) exposure. free radicals have been implicated in cochlear damage resulted from the exposure to noise and due to the co hypoxia. this study examined whether α-tocopherol administration, as a free radical scavenger, causes the attenuatio...

background: previous study by the authors showed that a-tocopherol prevents oxidative stress but would not improve depressed excretory variables in post-obstructed kidney (pok) after release of 24-h unilateral ureteral obstruction (uuo). this study is a supplementary investigation on the effects of a-tocopherol combined with an antagonist of angiotensin-ii type-1 (at1) receptor on renal dysfunc...

one of the simplest methods for short-term handling and storage of fish is the refrigeration in combination with dip treatments. this study was conducted to determine the effect of pre-storage α-tocopherol acetate dipping treatments on lipid stability of refrigerated rainbow trout fillets. trout fillets were dipped in α-tocopherol acetate solutions (200 and 500 mg kg-1 flesh) and subsequently s...

Serum alpha-tocopherol of98(62 male and 36 female) cancer patients and 30 (13 male and 17 female) control healthy subjects was investigated. The cancer patients showed a significantly low level of alpha-tocopherol as compared to control healthy subjects. Also, significantly higher levels of serum alpha-tocopherol were found in complete remission patients as compared to the partial response...

Abstract Background Direct measurement of the bioavailable α-tocopherol content presents a significant analytical challenge and requires chiral separation stereoisomers. Objective The objective study was to validate an method for analysis stereoisomers in infant formulas dairy products. Method Samples were saponified at elevated temperature lipophilic components extracted into organic solvent, ...

Methods: Alpha tocopherol, gamma tocopherol, and retinol are assayed using fluorescence detection. Excitation/emission wavelengths are 295 nm/330 nm and 325 nm/470 nm for the analysis of both tocopherols and retinol, respectively. Retinol acetate is employed as the internal standard. The reversed phase method incorporates gradient elution with a mobile phase consisting of methanol and acetonitr...

Two experiments evaluated the relationship of vitamin E (source and level) and vitamin A (level) on the apparent absorption and retention of both vitamins in weaned pigs. Both experiments used a combined total of 460 crossbred pigs ([Yorkshire x Landrace] x Duroc), housed in elevated 1.2- x 1.2-m crates containing five pigs per pen. Experiment 1 was a 2 x 2 x 2 factorial arrangement of treatmen...

background: reviewing the literature reveals that pentoxifylline (ptx) plus tocopherol (vitamin e) are used mainly to promote sperm quality. however trials focusing on the effects of these drugs in female partner are limited. combination of pentoxifylline and vitamin e appeared to improve the pregnancy rate in patients with a thin endometrium by increasing the endometrial thickness and improvin...

The effect of dietary RRR-g-tocopherol supplementation on serum and tissue aand g-tocopherol concentrations was studied in vitamin-E-deficient rats fed diets containing adequate levels of RRR-a-tocopherol and graded levels of RRR-g-tocopherol over a 60 day period. Feeding rats with a RRR-a-tocopherol-supplemented diet induced in forebrain, sciatic endoneurium, skeletal muscle, heart and liver a...