[Glutathione peroxidase and glutathione reductase activity in rat liver following administration of vitamin E and methionine].

A single introduction of vitamin E and D,L-methionine to rats kept on the vivarium ration or their addition to protein-free diet separately does not affect the glutathionperoxidase and glutathionreductase activities in the liver. A simultaneus introdyction of the vitamin and methionine causes an increase in the glutathionperoxidase activity, without changing the glutathionreductase activity. Vitamin E prevents from increasing the glutathionperoxidase and glutathionreductase activities due to selenium. Propyl gallate produces no such effect.