Ghrelin stimulates, whereas des-octanoyl ghrelin inhibits, glucose output by primary hepatocytes - Gauna, C; Delhanty, P J; Hofland, L J; Janssen, J A; Broglio, F; Ross, R J; Ghigo, E; van der Lely, A J (J Clin Endocrinol Metab, 2005)