Table 3.

In Experiment 4, the density of orexin 2 receptor (OX₂R) and enkephalin (ENK) single-labeled as well as double-labeled neurons was increased in the parvocellular region of the posterior paraventricular nucleus after high-fat diet intake.

Peptide(s)	Chow (cells/μm2 × 10−4)	High-Fat Diet (cells/μm2 × 10−4)
OX2R	1.85 ± 0.10	2.15 ± 0.06*
ENK	2.20 ± 0.16	3.33 ± 0.20*
OX2R+ENK	0.10 ± 0.01	0.33 ± 0.03*

Data are mean±S.E.M.

^*p<0.05 vs. chow.