Figure 3.
Neonatal overfeeding effects on neonatal hypothalamic circuitry. (A,B) neuropeptide Y (NPY) labeling in the arcuate nucleus of the hypothalamus (ARC) and (C,D) paraventricular nucleus of the hypothalamus (PVN) of control (CL) and small litter (SL) rats at postnatal day (P) 12. (E,F) Agouti-related peptide (AgRP) labeling in the ARC and (G,H) PVN. (I,J) Proopiomelanocortin (POMC) positive cells in the ARC. (K,L) POMC labeling in the PVN. Representative photomicrographs showing NPY labeling in the (B) ARC and (D) PVN, AgRP labeling in the (F) ARC, and (H) PVN, POMC labeling in the (J) ARC and (L) PVN. Scale bars = 100 µm. Data are mean ± SEM. n = 5–6 per group.