The obestatin receptor (GPR39) is expressed in human adipose tissue and is down-regulated in obesity-associated type 2 diabetes mellitus. - Catalán, V.; Gómez-Ambrosi, J.; Rotellar, F.; Silva, C.; Gil, M. J.; Rodríguez, A.; Cienfuegos, J. A.; Salvador, J.; Frühbeck, G. (Clinical Endocrinology, 2007)