Concentration of neuropeptide Y, galanin, &bgr;-endorphin, vasoactive intestinal peptide and gonadotropin releasing hormone in the hypothalamus of gilts during the estrous cycle.
: Numerous reports indicate that peptides isolated from the brain such as beta-endorphin (beta-END), neuropeptide Y (NPY), galanin (GAL) or vasoactive intestinal peptide (VIP), modulate secretion of gonadotropins and prolactin. The objective of the present experiment was to determine concentrations of NPY, GAL, beta-END, VIP and GnRH in.....