Figure 3.

The effect of glutathione depletion on the induction of caspase activation in ethanol-treated WIF-B cells. WIF-B cultures were treated in the presence or absence of ethanol (25 mmol/L) for 48 h after pretreatment with (C pyr and E pyr) or without (C and E) pyrazole. Glutathione was depleted by the inclusion of BSO in the culture media when indicated (+ BSO). A: The amount of reduced glutathione (GSH) was detected as described in “Material and Methods”; B: Measure of apoptosis in WIF-B cells following glutathione depletion. Cell lysates were assayed for caspase-3 activity and the release of fluorescent product was detected and expressed for five independent experiments; C: Phase contrast images of the treated WIF-B cultures. ^aP < 0.05 vs control; ^cP < 0.05 vs ethanol-treated.