in order to investigate a role of sympathetic nervous system in the mechanism of blood-pressure elevation in essential hypertension , urinary catecholamines , serum dopamine-beta-hydroxylase ( dbh ) activity and a pressor response to infused noradrenaline ( noradrenaline response ) were measured , in the patients with essential hypertension , before and 2 weeks-rest after hospitalization or following salt restriction .
C0007412
catecholamines
C0028351
noradrenaline