[The status of redox system in patients with Graves' disease]

The aim of our investigation was studying the redox processes, the establishment of state of blood oxidative and antioxidant systems in patients with Graves' Disease (GD). 19 with diffuse-toxic goiter have been investigated. Control group included 10 practically healthy subjects. The parameters of blood redox-system were investigated by electron-paramagnetic resonance method (EPR). In GD group hypothyroidism was diagnosed in 7 patients (36,8%), euthyroidism - in 7 patients (36,8%) and hypothyroidism - in 5 (26,3%). The value of ceruloplasmin in main group was significantly higher than in the control (18,6+/-1,3 mm/mg vs. 16,0+/-1,1 mm/mg, p<0,001); EPR-signal of Fe(3+)-transferrin in main group was also significantly higher (19,2+/-1,2 mm/mg vs. 22,0+/-0,9 mm/mg, p<0,001); values of nitric oxide in both groups were almost identical. EPR-signals of Mn(2+) ions significantly correlated with thyroid volume (r=0,5461, p=0,016), NO - with antibodies to thyroglobulin (r=0,5750, p=0,010). These changes demonstrate possible relationship between autoimmune diseases and redox-system.