to test further the hypothesis that the renal nerves ( afferents ) contribute to the maintenance of hypertension in this model by modulating sympathetic nervous system activity , plasma norepinephrine and epinephrine changes in response to stress were compared in hypertensive sham-operated ( n = 6 ) , renal denervated ( n = 6 ) and control ( n = 7 ) animals .
C0028351
norepinephrine
C0014563
epinephrine