Effect of·OH Scavengers on Radiation Damage to the Erythrocyte Membrane

Abstract
Thiourea, an ·OH scavenger, reduced the gamma-radiation-induced changes in the rigidity of erythrocyte membrane lipids, the state of membrane proteins, and lipid peroxidation. Several ·OH scavengers, but not superoxide dismutase, also inhibited the radiation-induced acceleration of the transport of a hydrophilic non-electrolyte spin label TEMPOL across the erythrocyte membrane. The effects of scavengers were usually biphasic with a maximum of the protective effect. Higher concentrations of the scavengers were less effective, as in the case of radioprotection of erythrocytes to haemolysis studied previously.

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