It is consistent with previous reports where the TBARS levels were similar between the GDM and NPW placentas [19], and protein carbonyl formation was lower in the placentas of overweight patients compared to lean individuals [20], and more importantly, catalase and glutathione reductase (GSR) mRNA expression was higher in women with GDM compared with NPW [7]. The gene discussed is CAT; the disease is gestational diabetes.