Fig 6.
Effects of various concentrations of MLA, DHBE and MEC against protective effects of NIC on Fe-induced toxicity in SH-SY5Y cells. Cells were treated with various concentrations of the antagonists 1 h prior to NIC (1 uM), which was applied 1 h prior to Fe (20 uM) and cell viability was determined by MTT 24 h later. Values are mean ± SEM. **p<0.01 compared to control. ††p<0.01 compared to Fe alone.$p<0.05,$ $p<0.01 compared to NIC+Fe. N=5 per treatment.