Govoni S, Goss I, Di Giovine S, Battaini F, Trabucchi M. Calcium antagonists inhibit met-enkephalin immunoreactive material release: in vitro and ex vivo experiments.
J Neural Transm (Vienna) 1990;
80:1-8. [PMID:
1689585 DOI:
10.1007/bf01245019]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Depolarizing stimuli increase the release of neurotransmitter met-enkephalin from rat striatal slices. Bay K8644, a calcium agonist, significantly enhances the submaximal release of this peptide. Several organic calcium antagonists, including nimodipine, nifedipine, nicardipine, gallopamil and flunarizine, are able to inhibit the potassium-evoked met-enkephalin release both in vitro and ex vivo. The data suggest that the release of this neuropeptide is modulated by calcium antagonist-sensitive calcium channels.
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