Title: Beta-adrenergic stimulation of prolactin release from superfused pituitary cell aggregates
Authors: Denef, Carl ×
Baes, Myriam #
Issue Date: Aug-1982
Series Title: Endocrinology. vol:111 issue:1 pages:356-8
Abstract: l-Isoproterenol (l-ISO), a specific agonist of beta-adrenergic receptors, evoked a prompt rise of prolactin (PRL) release from superfused anterior pituitary cell aggregates established in culture for 5 days. The effect was concentration-dependent between 1 and 100 nM. d-Isoproterenol was more than 2 orders of magnitude weaker than the l-isomer. When dopamine receptors were blocked with domperidone, PRL secretion was also stimulated by l-epinephrine (E) and l-norepinephrine (NE), the rank order of potency being l-ISO greater than E much greater than NE. Under the latter conditions dopamine and the alpha-adrenergic agonists, clonidine and phenylephrine, had no stimulatory effect at 1 microM. Stimulation of PRL release by l-ISO and E was blocked by the beta-receptor antagonist, propranolol, but not by the alpha-receptor blocker, prazosin.
ISSN: 0013-7227
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Pharmacology Section (-)
Cell Metabolism
Physiology Section (-)
× corresponding author
# (joint) last author

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