[Studies on the release of dopamine-beta-hydroxylase by nicotine (author's transl)]

Comparative studies were made on the release of DBH by adrenal medullary slices after colinomimetic stimulation with acetylcholine, DMPP or nicotine. The in vivo effects of nicotine on the circulating plasma dopamine-beta-hydroxylase were tested in habitual and non habitual smokers after five cigarettes (12.5 mg of nicotine). The rise of plasma enzyme activity may reflect the increased catecholamine release from adrenal and peripheral adrenergic nerves.