Nicotine-induced changes in pCREB are mediated by β2, but not
α7, nAChRs. A, increase in pCREB after acute nicotine treatment in the
VTA and NAc is observed in WT mice. This increase is not observed in β2
nAChR KO mice. B, increase in pCREB after acute nicotine treatment in the VTA
and NAc is observed in WT and α7 nAChR KO mice. The y-axis
represents the ratio of pCREB/α-tubulin. Each point represents the mean
± S.E.M. of six to eight mice. *, p < 0.05 from
corresponding saline group. Amy, amygdala; Hippo, hippocampus; nic, nicotine;
sal, saline; α-tub, α-tubulin.