the acute responsiveness of plasma catecholamine , renin ( pra ) , and aldosterone levels to exogenous norepinephrine was studied under placebo conditions and following renin ( pra ) , and aldosterone levels to exogenous norepinephrine was studied under placebo conditions and following renin-angiotensin activation by diuretic pretreatment in 25 normal subjects and 34 patients with borderline-to-moderate essential hypertension .
C0007412
catecholamine
C0028351
norepinephrine