Figure 1

Lipid peroxidation, measured as MDA + 4-HDA level, in porcine thyroid homogenates. Homogenates were incubated in the presence of KI alone [500; 250; 100; 50; 25; 10; 5.0; 2.5; 1.0; 0.5; 0.25; 0.1; 0.05; 0.025; 0.01; 0.005; 0.0025; 0.001; 0.0005; 0.00025; 0.0001; 0.00005 mM]. Data are expressed as nmol/mg protein. Data are from four independent experiments. Values are expressed as mean ± SE (error bars). ^ap < 0.05 vs. control (in the absence of KI); ^bp < 0.05 vs. KI concentrations ≤100 mM; ^cp < 0.05 vs. any other KI concentration.