Figure 2.
Naspm inhibition of EPSCs indicates that in vivo cocaine exposure increases GluA2-lacking AMPARs in Epac+/+ slices but not in Epac−/− slices. A, The selective GluA2-lacking AMPAR blocker Naspm induced greater depression of EPSCs in slices from Epac+/+ mice that received a single cocaine injection compared with those received a single saline injection (***p < 0.001; n = 8 for each group). B, Epac knock-out abrogated the effect of in vivo cocaine injection on Naspm inhibition of EPSCs (p = 0.432; n = 8–9). C, Summarized data showed the effects of NASPM on EPSCs in these four groups (**p = 0.001, n = 8–8; ***p < 0.001, n = 8–8).