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Different modes of Ca channel gating behaviour favoured by dihydropyridine Ca agonists and antagonists

Different modes of Ca channel gating behaviour favoured by dihydropyridine Ca agonists and... Single cardiac transmembranous Ca channels have three modes of gating behaviour in the absence of drugs, expressed as current records with brief openings (mode 1), with no openings because of channel unavailability (mode 0 or null mode) and with long-lasting openings and very brief closings that appear only rarely (mode 2). The dihydropyridine Ca agonist Bay K 8644 enhances Ca channel current by promoting mode 2, while the Ca antagonists nitrendipine and nimodipine inhibit the current by favouring mode 0. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

Different modes of Ca channel gating behaviour favoured by dihydropyridine Ca agonists and antagonists

Nature , Volume 311 (5986) – Oct 11, 1984

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References (21)

Publisher
Springer Journals
Copyright
Copyright © 1984 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/311538a0
Publisher site
See Article on Publisher Site

Abstract

Single cardiac transmembranous Ca channels have three modes of gating behaviour in the absence of drugs, expressed as current records with brief openings (mode 1), with no openings because of channel unavailability (mode 0 or null mode) and with long-lasting openings and very brief closings that appear only rarely (mode 2). The dihydropyridine Ca agonist Bay K 8644 enhances Ca channel current by promoting mode 2, while the Ca antagonists nitrendipine and nimodipine inhibit the current by favouring mode 0.

Journal

NatureSpringer Journals

Published: Oct 11, 1984

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