compared to the 25-year olds , the 50-year old men had more than three times higher basal plasma vasopressin ( 7.8 +/- 1.4 vs. 2.5 +/- 0.6 ng/l , p less than 0.01 ) , only one-third the plasma renin concentration ( 0.36 +/- 0.05 vs. 1.10 +/- 0.33 g.u . x 10 ( -4 ) /ml , p less than 0.01 ) and a significantly higher plasma noradrenaline ( 267 +/- 21 vs. 199 +/- 19 ng/l , p less than 0.05 ) while plasma adrenaline remained essentially unchanged .
C0028351
noradrenaline
C0014563
adrenaline