these results suggest that in shr the increased norepinephrine overflow from sympathetic nerve endings may be partly caused by the facilitatory effect of epinephrine ( through presynaptic beta-adrenoceptors ) and impaired dopamine-mediated inhibition on the nerve terminals , which might contribute to the enhanced adrenergic activity in hypertension .
C0028351
norepinephrine
C0014563
epinephrine