post-ganglionic blockade with bretylium ( 20 mg.kg-1 , i.v . ) reduced ne release from sympathetic nerve endings and triggered a compensatory increase in epinephrine ( e ) release from the adrenal medulla , as reflected by plasma ne and e concentrations at rest and exercise ( e/ne ratio = 2.92 +/- 0.53 and 2.48 +/- 0.51 vs 0.62 +/- 0.15 and 1.48 +/- 0.18 in control rats ; mean +/- se ) .
C0014563
epinephrine
C0028351
ne