Erythrocyte superoxide dismutase, catalase and glutathione peroxidase in glucose-6-phosphate dehydrogenase deficiency

• Published in: Scandinavian journal of haematology Vol. 29; no. 2; p. 135
• Main Authors: Gerli, G C, Beretta, L, Bianchi, M, Agostoni, A, Gualandri, V, Orsini, G B
• Format: Journal Article
• Language: English
• Published: Denmark 01-08-1982
• Subjects: Adolescent; Adult; Catalase - blood; Child; Erythrocytes - drug effects; Erythrocytes - enzymology; European Continental Ancestry Group; Female; Glucosephosphate Dehydrogenase Deficiency - blood; Glucosephosphate Dehydrogenase Deficiency - complications; Glucosephosphate Dehydrogenase Deficiency - genetics; Glutathione Peroxidase - blood; Humans; Male; Phenylhydrazines - pharmacology; Superoxide Dismutase - blood; Thalassemia - complications; Thalassemia - genetics
• ISSN: 0036-553X
• DOI: 10.1111/j.1600-0609.1982.tb00574.x

Glucose-6-phosphate dehydrogenase (G-6-PD) deficient erythrocytes are particularly sensitive to oxidant stress. In order to evaluate if these cells are protected against oxidant damage, we assayed the antioxidant enzymes superoxide dismutase (SOD), catalase and glutathione peroxidase (GSH-Px) in erythrocytes of G-6-PD deficient (hemizygous and heterozygous) subjects. Normal levels of antioxidant enzymes were found in all subjects examined both with positive and negative histories of haemolytic crisis after fava bean or drug ingestion. In contrast, high levels of catalase and GSH-Px were found in a small group of G-6-PD deficient subjects (hemizygous and heterozygous) with beta-thalassaemia trait, probably by reason of the chronically enhanced oxidant stress which is present in beta-thalassaemia.