(A) In FCTX, NPY-LI was significantly reduced at 24-hr WD, whereas it was increased at 2-wk WD, compared to control rats. CET, 24-hr and 2-wk WD had no effect on NPY-LI in the PCTX (B) and HPC (C) of adult rats. (D) In AMYG, NPY-LI was significantly increased at 2-wk WD, compared to control rats. CET and 24-hr WD had no effect on NPY-LI in AMYG. * indicates P < 0.05 for significant difference from control rats. NPY-LI levels are expressed as pmol/g. Error bars= S.E.M.