Figure 1: Effect of 6-week treatment with α-lipoic acid or standard diet (SD) on superoxide anion production (A) and NADPH oxidase activity (B) in aorta of 12 weeks Zucker diabetic fatty (ZDF) rats and age matched Zucker lean (ZL) rats. *P<0.05 vs ZL rats; #P<0.05 and ##P<0.01 vs ZDF rats.