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beta-Adrenergic, CRF-ergic and dopaminergic mechanisms controlling alpha-MSH secretion in rat pars intermedia cells in primary culture



beta-Adrenergic, CRF-ergic and dopaminergic mechanisms controlling alpha-MSH secretion in rat pars intermedia cells in primary culture



Progress in Neuro-Psychopharmacology and Biological Psychiatry 6(4-6): 411-415



1. A pure population of pars intermedia cells in primary culture was used to study changes in alpha-MSH secretion and cyclic AMP accumulation. 2. Beta-adrenergic agonists and CRF (corticotropin-releasing factor) stimulate alpha-MSH secretion and cyclic AMP accumulation. 3. Dopaminergic agonists inhibit basal as well as (-)isoproterenol- and CRF-induced alpha-MSH secretion and cyclic AMP accumulation. 4. Beta-adrenergic, dopaminergic and CRF receptors regulate pars intermedia cell activity probably through the adenylate cyclase system.

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Accession: 044997507

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PMID: 6298887


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