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Science 3 September 1971:
Vol. 173. no. 4000, pp. 931 - 934
DOI: 10.1126/science.173.4000.931

Articles

Serum Dopamine-beta-Hydroxylase: Decrease after Chemical Sympathectomy

Richard Weinshilboum 1 and Julius Axelrod 2

1 Pharmacology-Toxicology Program, National Institute of General Medical Sciences, Bethesda, Maryland 20014
2 Laboratory of Clinical Science, National Institute of Mental Health, Bethesda, Maryland 20014

Dopamine-beta- hydroxylase is an enzyme that is localized to catecholamine-containing vesicles in sympathetic nerves and the adrenal medulla, and is also found in the serum. Treatment of rats with 6-hydroxydopamine, a drug which destroys sympathetic nerve terminals, leads to a decrease in serum dopamine-beta-hydroxylase activity. The decrease is not due to an effect on the adrenal medulla or to an increase in circulating inhibitor or inhibitors of enzyme. These data represent evidence that at least a portion of the circulating dopamine-beta-hydroxylase activity arises from sympathetic nerve terminals.


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