PDC potentiates the cardiovascular response to BMI. Maximal changes in heart rate (HR; beats/min;top) and mean arterial pressure (MAP; mmHg; bottom) in conscious, chronically instrumented rats after bilateral, intra-amygdalar injection ofl-trans-pyrrolidine-2,4-dicarboxylic acid (PDC; 1 nmol) and saline (Sal; 250 nl), saline and BMI (30 pmol), or PDC and BMI. Single asterisks denote significant differences from PDC/saline.Double asterisks denote significant differences from saline/BMI. Each group, n = 4. HR:F(2,9) = 42.88; MAP:F(2,9) = 33.71.