This decapeptide is a hypothalamic hormone that controls the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in the pituitary gland and promotes mating behavior. It stimulates the secretion of gonadotropins after its interaction with specific G-protein-coupled receptors that are present in plasma membranes of pituitary gonadotrophs. In addition to hypophysiotropic effect, it also plays a autocrine/paracrine role in peripheral organs such as prostate, breast and ovary. Luteinizing hormone-releasing hormone is not only a neurohormone but may also function as a neurotransmitter or neuromodulator.