A clear, colorless, sterile solution for SC injection manufactured by Amylin Pharmaceuticals, Inc. Placebo solution is the same, sterile preserved formulation, except the active ingredient, pramlintide, is omitted.

Pramlintide acetate (AC137) injection is a clear, colorless, sterile solution for SC injection manufactured by Amylin Pharmaceuticals, Inc. It consists of pramlintide (AC137) 0.6 mg/mL in sodium acetate buffer, pH 4.0, containing 43 mg/mL mannitol as an iso-osmolality modifier and 2.25 mg/mL metacresol as a preservative.

Pramlintide injection will be supplied in 5-mL multidose glass vials with rubber stoppers.

To assess the acute effect of pramlintide administered subcutaneously (SC) on satiety in normal-weight and obese non-diabetic subjects and in insulin-treated subjects with type 1 and type 2 diabetes. To be measured by Total caloric intake, macronutrient intake (carbohydrate, fat, protein, and other), duration of buffet meal, aand satiety data measured via a satiety assessment at Period 1 (Visit 2) and Period 2 (Visit 3).

To assess the acute effect of pramlintide administered SC on food intake in normal-weight and obese non-diabetic subjects and in insulin-treated subjects with type 1 and type 2 diabetes. To be measured by Total caloric intake, macronutrient intake (carbohydrate, fat, protein, and other), duration of buffet meal, aand satiety data measured via a satiety assessment at Period 1 (Visit 2) and Period 2 (Visit 3).

To assess the acute effect of pramlintide administered SC on postprandial metabolic and hormonal responses [glucose, triglycerides, total cholesterol, insulin, cholecystokinin (CCK), and glucagon-like peptide (GLP-1)] in normal-weight and obese non-diabetic subjects and in insulin-treated subjects with type 1 and type 2 diabetes. To be measured by the calculation of both absolute and incremental plasma analyte concentration profiles.