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  • Title: Erythrocytic glutathione peroxidase: its relationship to plasma selenium in man.
    Author: Perona G, Cellerino R, Guidi GC, Moschini G, Stievano BM, Tregnaghi C.
    Journal: Scand J Haematol; 1977 Jul; 19(1):116-20. PubMed ID: 882836.
    Abstract:
    Erythrocytic glutathione-peroxidase (GSH-Px) activity and plasma selenium concentrations were measured in 14 patients: 7 with iron deficiency and 7 with raised serum iron levels. The decreased enzymatic activity in iron deficiency was confirmed. Plasma selenium was significantly lower in patients with lower serum iron; furthermore there is a significant correlation between serum iron and plasma selenium concentrations. Another correlation even more significant was found between plasma selenium and enzyme activity in all the cases we studied. These data suggests that the importance of iron for GSH-Px activity may be merely due to its relationship with selenium and that plasma selenium concentration may be of critical importance for enzyme activity.
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