Fig. 4

Tan IIA relieved the effect of Aβ on cell viability and apoptosis in SH-SY5Y cells. SH-SY5Y cells were pretreated with Tan IIA (5 or 10 μM) for 1 h prior to exposure to Aβ (25 μM) for 48 h. a MTT assay was performed to determine cell viability. b, c Flow cytometry analysis was conducted to assess apoptotic rates. *p < 0.05, **p < 0.01 vs. respective control