the time courses of mean blood pressure ( mbp ) , plasma renin activity ( pra ) , plasma aldosterone ( pa ) , serum prostaglandin e ( pge ) , serum angiotensin i converting enzyme ( ace ) , and blood levels of angiotensin i converting enzyme inhibitor ( sq 14,225 ) ( captopril ) were studied in 6 patients with essential hypertension ( 5 men and 1 woman , aged 44 +/- 5.6 ( mean +/- s.e . ) years ) before and 30 , 60 , 120 and 180 min after administration of 25 mg captopril .
C0032105
plasma
C0229671
serum