Insulin modulates leptin-induced STAT3 activation in rat hypothalamus - Carvalheira, José B C; Siloto, Rodrigo M P; Ignacchitti, Inara; Brenelli, Sigisfredo L; Carvalho, Carla Roberta de Oliveira; Leite, Adilson; Gontijo, José A R; Saad, Mario J A (FEBS Letters, 2001)