Effect of ALA on cardiac RAGE expression in OLETF rats. (A) Western blot showing the level of cardiac RAGE in each group. (B) Quantification of cardiac RAGE by Western blot analysis. Densitometry values of RAGE protein were normalized to that of α-tubulin and are presented as arbitrary units (A.U.) relative to LETO expression levels. Data are presented as the mean ± SEM. *p < 0.05 vs. LETO rats; †p < 0.05 vs. OLETF rats.