Activation of canonical transient receptor potential channels preserves Ca2+ entry and endothelium-derived hyperpolarizing factor-mediated function in vitro in porcine coronary endothelial cells and coronary arteries under conditions of hyperkalemia
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AbstractObjectives: Althoughmembrane depolarization by hyperkalemia is known to reduceCa2 influx in endothelial cells, the mechanism by which endothelial Ca2 channel is affected by hyperkalemia remains poorly studied. We studied the effect of hyperkalemia on canonical transient receptor potential channels, in particular canonical transient receptor potential channel 3, in modulation of endothelial intracellular Ca2+ concentration. Endothelium-derived hyperpolarizing factor-mediated function is C2+ dependent, and hyperkalemic cardioplegia/organ preservation solutions impair endothelium-derived hyperpolarizing factor-mediated function. We explored the role of canonical transient receptor potential channel 3 in endothelium-derived hyperpolarizing factor-mediated function and investigated whether modulation of these channels preserves endothelial Ca2+ influx and endothelium-derived hyperpolarizing factor-mediated function under the condition of hyperkalemic/cardioplegic exposure.
All Author(s) ListYang Q., Huang J.-H., Yao X.-Q., Underwood M.J., Yu C.-M.
Journal nameJournal of Thoracic and Cardiovascular Surgery
Year2014
Month1
Day1
Volume Number148
Issue Number4
PublisherMosby Inc.
Place of PublicationUnited States
Pages1665 - 1673.e1
ISSN0022-5223
eISSN1097-685X
LanguagesEnglish-United Kingdom

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