Plasma levels of insulin (K; n = 12 animals/group), leptin (L; n = 11 Veh; 12 AβOs), cholesterol (M; n = 8 Veh; 6 AβOs), triglycerides (N; n = 8 Veh; 6 AβOs) or noradrenaline (O; n = 7 Veh; 8 AβOs) measured 7 days after i.c.v. injection of vehicle (Veh) or 10 pmol AβOs. In (O), *P = 0.0361, Student's t-test. 