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Eur Neurol. 1983;22(6):442-6.

Blood cells glutathione peroxidase activity and selenium in multiple sclerosis.


In the present study, the plasma and erythrocyte Se concentration and the erythrocyte and leukocyte glutathione peroxidase (GSH-Px) activity in 20 patients affected by multiple sclerosis (MS) were compared with those of a group of healthy controls. The Se concentration in the food was also studied and found to be less than the minimum values suggested by the US Food and Nutrition Board. The erythrocyte Se levels were found to be similar in both MS patients and in controls, while the plasma Se values were higher in the MS patients. The Se-dependent GSH-Px activity in the erythrocytes was found to be lower in the MS patients while no difference was found in the two groups as far as the leukocytes were concerned. Our data confirm that of other authors and indicate that the modified GSH-Px activity found in erythrocytes of MS patients is independent from the Se concentration and probably due to genetic factors.

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