AGRP and Anorexia: To further characterize molecular traits of daytime-restricted anorexia, we analyzed plasma levels of appetite regulating hormones and the gene expression pattern of the known central appetite regulators in the hypothalamus, the anorectic proopiomelanocortin (POMC), and the orexigenic agouti-related peptide (AgRP) (Gao & Horvath, 2008).