Figure 1: Effects of (a) LB extract (0.1. 0.5 and 0.75 mg/ml) and (b) taurine (0.001, 0.1 and 1 mM) on protein expression of RAGE in high glucose-treated ARPE-19 cells. The relative levels of protein for RAGE was assessed by the immunoblotting method, and normalised to α-tubulin. Levels in control were arbitrarily assigned a value of 1.0. Values are means ± SEM (n=4). #P<0.001 versus Control, *P<0.05, **P<0.01 versus high glucose (HG). RG (10 μM) and PG (1 μM) were used as a positive controls. Mannitol (M) served as osmotic control.