The influence of dietary iron and tocopherols on oxidative stress and ras-p21 levels in the colon.

The purpose of this investigation was to determine how dietary levels of alpha-tocopherol, gamma-tocopherol and iron influence oxidative stress and ras-p21 levels in the colon. Rats were fed diets deficient in tocopherols (-E) or supplemented with either 0.156 mmol of alpha-tocopherol (AE)/kg diet or 0.