Attenuation of hyperglycemia-mediated oxidative stress by indole-3-carbinol and its metabolite 3, 3'- diindolylmethane in C57BL/6J mice.

In this study, we have investigated the effect of the nutritive phytochemicals, indole-3-carbinol (I3C) and its metabolite, 3, 3'- diindolylmethane (DIM) on oxidative stress developed in type 2 diabetes mellitus (T2DM). This work was carried out in the genetically modified mouse (C57BL/6J mice) that closely simulated the metabolic abnormalities of the human disease after the administration of high fat diet (HFD). Glucose, insulin, hemoglobin (Hb), glycated hemoglobin (HbA1c), thiobarbituric acid reactive substances (TBARS), lipid hydroperoxides (LOOH), conjugated dienes (CD), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), vitamin C, vitamin E, and reduced glutathione (GSH) levels were monitored in all the groups. Treatments positively modulate the glucose, insulin, and Hb and HbA1c levels in HFD mice. TBARS, LOOH, and CD were decreased in treatment groups when compared to the HFD group. Treatments increase SOD, CAT, GPx levels (erythrocyte, liver, kidney, and heart) and vitamin C, vitamin E, and GSH levels (plasma, liver, kidney, and heart) in diabetic mice. From the study, it was clear that the antioxidant-scavenging action were accelerated in mice treated with DIM than the I3C treatment group which was comparable with the standard drug metformin.