to evaluate the renin-angiotensin-aldosterone system in relation to circulatory catecholamines , we determined renin activity , angiotensin ii , aldosterone , adrenaline , and noradrenaline in plasma before and during a submaximal bicycle exercise test in 23 type 1 ( insulin-dependent ) diabetic patients ( aged 19-57 years , mean 37 ; duration of diabetes 2-32 years , mean 16 ) , 17 with signs of cardiac autonomic neuropathy , and in 18 healthy non-diabetic subjects ( aged 24-41 years , mean 29 ) .
C0007412
catecholamines
C0028351
noradrenaline