RT Journal Article SR Electronic T1 Increased Synthesis of Norepinephrine in the Rat Heart on Electrical Stimulation of the Stellate Ganglia JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 610 OP 613 VO 2 IS 6 A1 ROBERT GORDON A1 JOHN V. O. REID A1 ALBERT SJOERDSMA A1 SIDNEY UDENFRIEND YR 1966 UL http://molpharm.aspetjournals.org/content/2/6/610.abstract AB Electrical stimulation of the stellate ganglia results in increased formation of radioactive norepinephrine (NE) in the rat heart from L-tyrosine-14C but not from L-dopa-3H. These findings represent additional evidence that the activity of tyrosine hydroxylase, the rate-limiting step in NE synthesis, is increased by sympathetic nerve activity.